./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL --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 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:55:02,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:55:02,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:55:03,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:55:03,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:55:03,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:55:03,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:55:03,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:55:03,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:55:03,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:55:03,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:55:03,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:55:03,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:55:03,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:55:03,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:55:03,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:55:03,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:55:03,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:55:03,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:55:03,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:55:03,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:55:03,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:55:03,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:55:03,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:55:03,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:55:03,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:55:03,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:55:03,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:55:03,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:55:03,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:55:03,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:55:03,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:55:03,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:55:03,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:55:03,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:55:03,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:55:03,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:55:03,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:55:03,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:55:03,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:55:03,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:55:03,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:55:03,167 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:55:03,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:55:03,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:55:03,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:55:03,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:55:03,170 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:55:03,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:55:03,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:55:03,171 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:55:03,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:55:03,174 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:55:03,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:55:03,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:55:03,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:55:03,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:55:03,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:55:03,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:55:03,176 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:55:03,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:55:03,176 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:55:03,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:55:03,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:55:03,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:55:03,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:55:03,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:55:03,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:55:03,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:55:03,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:55:03,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:55:03,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:55:03,181 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:55:03,182 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:55:03,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:55:03,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:55:03,183 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_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec [2021-11-19 04:55:03,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:55:03,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:55:03,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:55:03,581 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:55:03,582 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:55:03,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-11-19 04:55:03,668 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/data/c592bf233/acc5d87eeb4e489eb058a30db2ceca3f/FLAGf9d630300 [2021-11-19 04:55:04,344 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:55:04,345 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-11-19 04:55:04,364 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/data/c592bf233/acc5d87eeb4e489eb058a30db2ceca3f/FLAGf9d630300 [2021-11-19 04:55:04,602 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/data/c592bf233/acc5d87eeb4e489eb058a30db2ceca3f [2021-11-19 04:55:04,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:55:04,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:55:04,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:55:04,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:55:04,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:55:04,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:04" (1/1) ... [2021-11-19 04:55:04,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76404922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:04, skipping insertion in model container [2021-11-19 04:55:04,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:04" (1/1) ... [2021-11-19 04:55:04,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:55:04,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:55:04,828 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_173333bd-6401-494a-9b4f-c93426aac3e9/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-11-19 04:55:04,834 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_173333bd-6401-494a-9b4f-c93426aac3e9/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-11-19 04:55:04,882 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:55:04,892 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:55:04,910 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_173333bd-6401-494a-9b4f-c93426aac3e9/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-11-19 04:55:04,912 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_173333bd-6401-494a-9b4f-c93426aac3e9/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-11-19 04:55:04,955 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:55:04,972 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:55:04,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:04 WrapperNode [2021-11-19 04:55:04,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:55:04,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:55:04,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:55:04,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:55:04,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:04" (1/1) ... [2021-11-19 04:55:04,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:04" (1/1) ... [2021-11-19 04:55:05,030 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-11-19 04:55:05,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:55:05,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:55:05,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:55:05,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:55:05,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:04" (1/1) ... [2021-11-19 04:55:05,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:04" (1/1) ... [2021-11-19 04:55:05,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:04" (1/1) ... [2021-11-19 04:55:05,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:04" (1/1) ... [2021-11-19 04:55:05,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:04" (1/1) ... [2021-11-19 04:55:05,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:04" (1/1) ... [2021-11-19 04:55:05,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:04" (1/1) ... [2021-11-19 04:55:05,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:55:05,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:55:05,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:55:05,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:55:05,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:04" (1/1) ... [2021-11-19 04:55:05,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:55:05,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:55:05,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:55:05,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:55:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:55:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-19 04:55:05,186 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-19 04:55:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-11-19 04:55:05,189 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-11-19 04:55:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:55:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:55:05,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:55:05,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 04:55:05,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 04:55:05,297 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:55:05,298 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:55:05,589 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:55:05,600 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:55:05,600 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 04:55:05,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:05 BoogieIcfgContainer [2021-11-19 04:55:05,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:55:05,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:55:05,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:55:05,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:55:05,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:55:04" (1/3) ... [2021-11-19 04:55:05,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c1f3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:55:05, skipping insertion in model container [2021-11-19 04:55:05,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:04" (2/3) ... [2021-11-19 04:55:05,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c1f3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:55:05, skipping insertion in model container [2021-11-19 04:55:05,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:05" (3/3) ... [2021-11-19 04:55:05,616 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_4-2a.c.cil.c [2021-11-19 04:55:05,623 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:55:05,624 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 04:55:05,703 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:55:05,712 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 [2021-11-19 04:55:05,712 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 04:55:05,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 04:55:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:55:05,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:05,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:05,777 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:55:05,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:05,784 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-19 04:55:05,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:55:05,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654879907] [2021-11-19 04:55:05,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:05,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:55:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:05,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:05,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:55:05,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654879907] [2021-11-19 04:55:05,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654879907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:55:05,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:55:05,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:55:05,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888181035] [2021-11-19 04:55:05,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:55:05,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:55:05,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:55:06,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:55:06,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:55:06,027 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:55:06,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:55:06,070 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-11-19 04:55:06,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:55:06,073 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-19 04:55:06,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:55:06,084 INFO L225 Difference]: With dead ends: 121 [2021-11-19 04:55:06,085 INFO L226 Difference]: Without dead ends: 56 [2021-11-19 04:55:06,090 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 [2021-11-19 04:55:06,095 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:55:06,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:55:06,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-19 04:55:06,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-19 04:55:06,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-19 04:55:06,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-11-19 04:55:06,155 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-11-19 04:55:06,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:55:06,156 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-11-19 04:55:06,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:55:06,156 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-11-19 04:55:06,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:55:06,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:06,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:06,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:55:06,160 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:55:06,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:06,166 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-19 04:55:06,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:55:06,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524130463] [2021-11-19 04:55:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:06,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:55:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:55:06,202 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:55:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:55:06,252 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:55:06,252 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 04:55:06,255 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-19 04:55:06,257 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-19 04:55:06,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:55:06,269 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 04:55:06,272 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 04:55:06,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:55:06 BoogieIcfgContainer [2021-11-19 04:55:06,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 04:55:06,316 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:55:06,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:55:06,317 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:55:06,318 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:05" (3/4) ... [2021-11-19 04:55:06,322 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 04:55:06,323 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:55:06,326 INFO L158 Benchmark]: Toolchain (without parser) took 1717.41ms. Allocated memory was 90.2MB in the beginning and 136.3MB in the end (delta: 46.1MB). Free memory was 62.9MB in the beginning and 88.4MB in the end (delta: -25.4MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2021-11-19 04:55:06,327 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 90.2MB. Free memory is still 60.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:55:06,331 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.41ms. Allocated memory is still 90.2MB. Free memory was 62.7MB in the beginning and 49.7MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 04:55:06,333 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.29ms. Allocated memory is still 90.2MB. Free memory was 49.5MB in the beginning and 47.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:55:06,337 INFO L158 Benchmark]: Boogie Preprocessor took 38.77ms. Allocated memory is still 90.2MB. Free memory was 47.9MB in the beginning and 46.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:55:06,338 INFO L158 Benchmark]: RCFGBuilder took 532.24ms. Allocated memory was 90.2MB in the beginning and 136.3MB in the end (delta: 46.1MB). Free memory was 46.4MB in the beginning and 113.2MB in the end (delta: -66.8MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2021-11-19 04:55:06,339 INFO L158 Benchmark]: TraceAbstraction took 708.68ms. Allocated memory is still 136.3MB. Free memory was 112.4MB in the beginning and 89.2MB in the end (delta: 23.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-19 04:55:06,339 INFO L158 Benchmark]: Witness Printer took 6.56ms. Allocated memory is still 136.3MB. Free memory was 89.2MB in the beginning and 88.4MB in the end (delta: 817.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:55:06,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 90.2MB. Free memory is still 60.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.41ms. Allocated memory is still 90.2MB. Free memory was 62.7MB in the beginning and 49.7MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.29ms. Allocated memory is still 90.2MB. Free memory was 49.5MB in the beginning and 47.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.77ms. Allocated memory is still 90.2MB. Free memory was 47.9MB in the beginning and 46.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 532.24ms. Allocated memory was 90.2MB in the beginning and 136.3MB in the end (delta: 46.1MB). Free memory was 46.4MB in the beginning and 113.2MB in the end (delta: -66.8MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * TraceAbstraction took 708.68ms. Allocated memory is still 136.3MB. Free memory was 112.4MB in the beginning and 89.2MB in the end (delta: 23.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 6.56ms. Allocated memory is still 136.3MB. Free memory was 89.2MB in the beginning and 88.4MB in the end (delta: 817.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 2 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: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 81 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, 81 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=63occurred 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, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-19 04:55:06,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/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_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL --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 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:55:09,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:55:09,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:55:09,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:55:09,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:55:09,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:55:09,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:55:09,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:55:09,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:55:09,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:55:09,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:55:09,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:55:09,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:55:09,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:55:09,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:55:09,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:55:09,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:55:09,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:55:09,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:55:09,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:55:09,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:55:09,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:55:09,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:55:09,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:55:09,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:55:09,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:55:09,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:55:09,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:55:09,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:55:09,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:55:09,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:55:09,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:55:09,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:55:09,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:55:09,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:55:09,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:55:09,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:55:09,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:55:09,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:55:09,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:55:09,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:55:09,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-19 04:55:09,488 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:55:09,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:55:09,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:55:09,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:55:09,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:55:09,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:55:09,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:55:09,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:55:09,493 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:55:09,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:55:09,494 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:55:09,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:55:09,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:55:09,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:55:09,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:55:09,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:55:09,496 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 04:55:09,496 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 04:55:09,497 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:55:09,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:55:09,498 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:55:09,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:55:09,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:55:09,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:55:09,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:55:09,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:55:09,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:55:09,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:55:09,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:55:09,501 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 04:55:09,502 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 04:55:09,502 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:55:09,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:55:09,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:55:09,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:55:09,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 04:55:09,504 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_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec [2021-11-19 04:55:09,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:55:10,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:55:10,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:55:10,027 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:55:10,028 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:55:10,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-11-19 04:55:10,129 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/data/13b590b83/f5afd853716140cdb442a51f364a90dd/FLAG31d56b612 [2021-11-19 04:55:10,843 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:55:10,844 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-11-19 04:55:10,861 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/data/13b590b83/f5afd853716140cdb442a51f364a90dd/FLAG31d56b612 [2021-11-19 04:55:11,093 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/data/13b590b83/f5afd853716140cdb442a51f364a90dd [2021-11-19 04:55:11,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:55:11,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:55:11,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:55:11,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:55:11,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:55:11,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:11" (1/1) ... [2021-11-19 04:55:11,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9588f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:11, skipping insertion in model container [2021-11-19 04:55:11,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:11" (1/1) ... [2021-11-19 04:55:11,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:55:11,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:55:11,390 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_173333bd-6401-494a-9b4f-c93426aac3e9/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-11-19 04:55:11,400 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_173333bd-6401-494a-9b4f-c93426aac3e9/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-11-19 04:55:11,517 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:55:11,531 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:55:11,562 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_173333bd-6401-494a-9b4f-c93426aac3e9/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-11-19 04:55:11,569 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_173333bd-6401-494a-9b4f-c93426aac3e9/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-11-19 04:55:11,622 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:55:11,647 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:55:11,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:11 WrapperNode [2021-11-19 04:55:11,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:55:11,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:55:11,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:55:11,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:55:11,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:11" (1/1) ... [2021-11-19 04:55:11,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:11" (1/1) ... [2021-11-19 04:55:11,738 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2021-11-19 04:55:11,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:55:11,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:55:11,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:55:11,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:55:11,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:11" (1/1) ... [2021-11-19 04:55:11,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:11" (1/1) ... [2021-11-19 04:55:11,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:11" (1/1) ... [2021-11-19 04:55:11,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:11" (1/1) ... [2021-11-19 04:55:11,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:11" (1/1) ... [2021-11-19 04:55:11,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:11" (1/1) ... [2021-11-19 04:55:11,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:11" (1/1) ... [2021-11-19 04:55:11,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:55:11,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:55:11,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:55:11,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:55:11,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:11" (1/1) ... [2021-11-19 04:55:11,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:55:11,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:55:11,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:55:11,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:55:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:55:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 04:55:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-19 04:55:11,926 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-19 04:55:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-11-19 04:55:11,926 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-11-19 04:55:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:55:11,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:55:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 04:55:11,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 04:55:12,027 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:55:12,029 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:55:14,688 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:55:14,698 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:55:14,699 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 04:55:14,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:14 BoogieIcfgContainer [2021-11-19 04:55:14,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:55:14,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:55:14,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:55:14,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:55:14,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:55:11" (1/3) ... [2021-11-19 04:55:14,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a57ff37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:55:14, skipping insertion in model container [2021-11-19 04:55:14,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:11" (2/3) ... [2021-11-19 04:55:14,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a57ff37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:55:14, skipping insertion in model container [2021-11-19 04:55:14,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:14" (3/3) ... [2021-11-19 04:55:14,713 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_4-2a.c.cil.c [2021-11-19 04:55:14,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:55:14,721 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 04:55:14,786 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:55:14,795 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 [2021-11-19 04:55:14,795 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 04:55:14,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 04:55:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:55:14,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:14,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:14,827 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:55:14,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:14,842 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-19 04:55:14,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:55:14,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375462456] [2021-11-19 04:55:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:14,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:55:14,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:55:14,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:55:14,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 04:55:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:15,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 04:55:15,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:55:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:15,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:55:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:15,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:55:15,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375462456] [2021-11-19 04:55:15,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375462456] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:55:15,618 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:55:15,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:55:15,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884296434] [2021-11-19 04:55:15,621 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:55:15,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:55:15,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:55:15,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:55:15,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:55:15,664 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:55:15,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:55:15,705 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-11-19 04:55:15,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:55:15,713 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-19 04:55:15,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:55:15,725 INFO L225 Difference]: With dead ends: 121 [2021-11-19 04:55:15,725 INFO L226 Difference]: Without dead ends: 56 [2021-11-19 04:55:15,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:55:15,744 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:55:15,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:55:15,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-19 04:55:15,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-19 04:55:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-19 04:55:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-11-19 04:55:15,810 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-11-19 04:55:15,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:55:15,811 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-11-19 04:55:15,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:55:15,811 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-11-19 04:55:15,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:55:15,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:15,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:15,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:55:16,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:55:16,022 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:55:16,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:16,024 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-19 04:55:16,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:55:16,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008400152] [2021-11-19 04:55:16,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:16,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:55:16,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:55:16,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:55:16,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 04:57:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:57:13,763 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:57:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:57:58,358 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-19 04:57:58,358 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 04:57:58,360 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-19 04:57:58,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-19 04:57:58,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:57:58,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:57:58,567 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 04:57:58,570 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 04:57:58,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:57:58 BoogieIcfgContainer [2021-11-19 04:57:58,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 04:57:58,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:57:58,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:57:58,602 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:57:58,603 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:14" (3/4) ... [2021-11-19 04:57:58,605 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 04:57:58,651 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 04:57:58,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:57:58,652 INFO L158 Benchmark]: Toolchain (without parser) took 167551.10ms. Allocated memory was 71.3MB in the beginning and 102.8MB in the end (delta: 31.5MB). Free memory was 51.2MB in the beginning and 72.0MB in the end (delta: -20.8MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2021-11-19 04:57:58,653 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 71.3MB. Free memory is still 51.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:57:58,653 INFO L158 Benchmark]: CACSL2BoogieTranslator took 545.09ms. Allocated memory is still 71.3MB. Free memory was 51.0MB in the beginning and 48.5MB in the end (delta: 2.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 04:57:58,654 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.38ms. Allocated memory is still 71.3MB. Free memory was 48.4MB in the beginning and 46.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:57:58,654 INFO L158 Benchmark]: Boogie Preprocessor took 87.60ms. Allocated memory is still 71.3MB. Free memory was 46.7MB in the beginning and 45.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:57:58,655 INFO L158 Benchmark]: RCFGBuilder took 2873.10ms. Allocated memory is still 71.3MB. Free memory was 45.0MB in the beginning and 48.8MB in the end (delta: -3.8MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2021-11-19 04:57:58,655 INFO L158 Benchmark]: TraceAbstraction took 163897.37ms. Allocated memory was 71.3MB in the beginning and 102.8MB in the end (delta: 31.5MB). Free memory was 48.1MB in the beginning and 73.4MB in the end (delta: -25.2MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2021-11-19 04:57:58,656 INFO L158 Benchmark]: Witness Printer took 49.12ms. Allocated memory is still 102.8MB. Free memory was 73.4MB in the beginning and 72.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:57:58,658 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 71.3MB. Free memory is still 51.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 545.09ms. Allocated memory is still 71.3MB. Free memory was 51.0MB in the beginning and 48.5MB in the end (delta: 2.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.38ms. Allocated memory is still 71.3MB. Free memory was 48.4MB in the beginning and 46.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 87.60ms. Allocated memory is still 71.3MB. Free memory was 46.7MB in the beginning and 45.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2873.10ms. Allocated memory is still 71.3MB. Free memory was 45.0MB in the beginning and 48.8MB in the end (delta: -3.8MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * TraceAbstraction took 163897.37ms. Allocated memory was 71.3MB in the beginning and 102.8MB in the end (delta: 31.5MB). Free memory was 48.1MB in the beginning and 73.4MB in the end (delta: -25.2MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * Witness Printer took 49.12ms. Allocated memory is still 102.8MB. Free memory was 73.4MB in the beginning and 72.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.999992311000824, result=1.398435354232788, x=0.999992311000824] [L47] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=0.999992311000824, result=1.398435354232788, x=0.999992311000824] [L48] reach_error() VAL [IN=0.999992311000824, result=1.398435354232788, x=0.999992311000824] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 163.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 81 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, 81 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred 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, 118.3s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-19 04:57:58,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173333bd-6401-494a-9b4f-c93426aac3e9/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE