./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD --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 4c70b0c293d1f910083607d5ace0bd3396d2851476b1225436bb619abd3bfcaf .................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD --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 4c70b0c293d1f910083607d5ace0bd3396d2851476b1225436bb619abd3bfcaf ............................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 00:02:01,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 00:02:01,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 00:02:01,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 00:02:01,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 00:02:01,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 00:02:01,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 00:02:01,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 00:02:01,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 00:02:01,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 00:02:01,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 00:02:01,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 00:02:01,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 00:02:01,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 00:02:01,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 00:02:01,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 00:02:01,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 00:02:01,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 00:02:01,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 00:02:01,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 00:02:01,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 00:02:01,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 00:02:01,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 00:02:01,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 00:02:01,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 00:02:01,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 00:02:01,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 00:02:01,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 00:02:01,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 00:02:01,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 00:02:01,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 00:02:01,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 00:02:01,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 00:02:01,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 00:02:01,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 00:02:01,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 00:02:01,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 00:02:01,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 00:02:01,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 00:02:01,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 00:02:01,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 00:02:01,214 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-29 00:02:01,271 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 00:02:01,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 00:02:01,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-29 00:02:01,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-29 00:02:01,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 00:02:01,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 00:02:01,283 INFO L138 SettingsManager]: * Use SBE=true [2021-10-29 00:02:01,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 00:02:01,283 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 00:02:01,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 00:02:01,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 00:02:01,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 00:02:01,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 00:02:01,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 00:02:01,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 00:02:01,286 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 00:02:01,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 00:02:01,287 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 00:02:01,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 00:02:01,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 00:02:01,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 00:02:01,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 00:02:01,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:02:01,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 00:02:01,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 00:02:01,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 00:02:01,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-29 00:02:01,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 00:02:01,290 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-29 00:02:01,292 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-29 00:02:01,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 00:02:01,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 00:02:01,293 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_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c70b0c293d1f910083607d5ace0bd3396d2851476b1225436bb619abd3bfcaf [2021-10-29 00:02:01,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 00:02:01,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 00:02:01,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 00:02:01,676 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 00:02:01,677 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 00:02:01,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/floats-cdfpl/square_8.i [2021-10-29 00:02:01,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/data/ef9ba57b4/57c57dcc5efe4722955c8a5392c350c5/FLAGbe200869a [2021-10-29 00:02:02,295 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 00:02:02,296 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/sv-benchmarks/c/floats-cdfpl/square_8.i [2021-10-29 00:02:02,304 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/data/ef9ba57b4/57c57dcc5efe4722955c8a5392c350c5/FLAGbe200869a [2021-10-29 00:02:02,656 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/data/ef9ba57b4/57c57dcc5efe4722955c8a5392c350c5 [2021-10-29 00:02:02,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 00:02:02,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 00:02:02,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 00:02:02,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 00:02:02,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 00:02:02,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:02:02" (1/1) ... [2021-10-29 00:02:02,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b6f425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:02, skipping insertion in model container [2021-10-29 00:02:02,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:02:02" (1/1) ... [2021-10-29 00:02:02,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 00:02:02,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 00:02:02,925 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2021-10-29 00:02:02,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:02:02,941 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 00:02:02,960 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2021-10-29 00:02:02,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:02:02,977 INFO L208 MainTranslator]: Completed translation [2021-10-29 00:02:02,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:02 WrapperNode [2021-10-29 00:02:02,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 00:02:02,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 00:02:02,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 00:02:02,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 00:02:02,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:02" (1/1) ... [2021-10-29 00:02:03,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:02" (1/1) ... [2021-10-29 00:02:03,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 00:02:03,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 00:02:03,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 00:02:03,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 00:02:03,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:02" (1/1) ... [2021-10-29 00:02:03,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:02" (1/1) ... [2021-10-29 00:02:03,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:02" (1/1) ... [2021-10-29 00:02:03,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:02" (1/1) ... [2021-10-29 00:02:03,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:02" (1/1) ... [2021-10-29 00:02:03,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:02" (1/1) ... [2021-10-29 00:02:03,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:02" (1/1) ... [2021-10-29 00:02:03,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 00:02:03,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 00:02:03,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 00:02:03,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 00:02:03,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:02" (1/1) ... [2021-10-29 00:02:03,105 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:02:03,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:02:03,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 00:02:03,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 00:02:03,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 00:02:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 00:02:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 00:02:03,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 00:02:03,465 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 00:02:03,465 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-29 00:02:03,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:02:03 BoogieIcfgContainer [2021-10-29 00:02:03,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 00:02:03,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 00:02:03,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 00:02:03,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 00:02:03,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:02:02" (1/3) ... [2021-10-29 00:02:03,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5618b745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:02:03, skipping insertion in model container [2021-10-29 00:02:03,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:02" (2/3) ... [2021-10-29 00:02:03,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5618b745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:02:03, skipping insertion in model container [2021-10-29 00:02:03,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:02:03" (3/3) ... [2021-10-29 00:02:03,479 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8.i [2021-10-29 00:02:03,491 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 00:02:03,491 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 00:02:03,565 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 00:02:03,580 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 [2021-10-29 00:02:03,580 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 00:02:03,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-10-29 00:02:03,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 00:02:03,608 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:02:03,609 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 00:02:03,609 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:02:03,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:02:03,619 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-29 00:02:03,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:02:03,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211334408] [2021-10-29 00:02:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:02:03,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:02:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:02:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:02:03,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:02:03,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211334408] [2021-10-29 00:02:03,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211334408] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:02:03,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:02:03,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 00:02:03,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114459170] [2021-10-29 00:02:03,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 00:02:03,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:02:03,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 00:02:03,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 00:02:03,828 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-29 00:02:03,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:02:03,844 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-29 00:02:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 00:02:03,846 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-10-29 00:02:03,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:02:03,856 INFO L225 Difference]: With dead ends: 19 [2021-10-29 00:02:03,856 INFO L226 Difference]: Without dead ends: 7 [2021-10-29 00:02:03,860 INFO L786 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 [2021-10-29 00:02:03,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-29 00:02:03,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-29 00:02:03,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2021-10-29 00:02:03,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-29 00:02:03,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-29 00:02:03,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:02:03,896 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-29 00:02:03,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-29 00:02:03,897 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-29 00:02:03,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 00:02:03,898 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:02:03,898 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 00:02:03,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 00:02:03,899 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:02:03,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:02:03,900 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-29 00:02:03,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:02:03,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808035057] [2021-10-29 00:02:03,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:02:03,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:02:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:02:03,948 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:02:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:02:04,006 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:02:04,006 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 00:02:04,009 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:02:04,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 00:02:04,015 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 00:02:04,018 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 00:02:04,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:02:04 BoogieIcfgContainer [2021-10-29 00:02:04,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 00:02:04,040 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 00:02:04,040 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 00:02:04,041 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 00:02:04,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:02:03" (3/4) ... [2021-10-29 00:02:04,045 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 00:02:04,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 00:02:04,048 INFO L168 Benchmark]: Toolchain (without parser) took 1385.64 ms. Allocated memory is still 117.4 MB. Free memory was 76.9 MB in the beginning and 57.7 MB in the end (delta: 19.1 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2021-10-29 00:02:04,049 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 117.4 MB. Free memory is still 93.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:02:04,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.18 ms. Allocated memory is still 117.4 MB. Free memory was 76.7 MB in the beginning and 90.5 MB in the end (delta: -13.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 00:02:04,050 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.47 ms. Allocated memory is still 117.4 MB. Free memory was 90.5 MB in the beginning and 89.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:02:04,051 INFO L168 Benchmark]: Boogie Preprocessor took 54.00 ms. Allocated memory is still 117.4 MB. Free memory was 89.2 MB in the beginning and 88.4 MB in the end (delta: 757.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:02:04,052 INFO L168 Benchmark]: RCFGBuilder took 374.54 ms. Allocated memory is still 117.4 MB. Free memory was 88.4 MB in the beginning and 79.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 00:02:04,053 INFO L168 Benchmark]: TraceAbstraction took 570.32 ms. Allocated memory is still 117.4 MB. Free memory was 79.2 MB in the beginning and 58.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-29 00:02:04,054 INFO L168 Benchmark]: Witness Printer took 5.35 ms. Allocated memory is still 117.4 MB. Free memory was 58.2 MB in the beginning and 57.7 MB in the end (delta: 444.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:02:04,058 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 117.4 MB. Free memory is still 93.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.18 ms. Allocated memory is still 117.4 MB. Free memory was 76.7 MB in the beginning and 90.5 MB in the end (delta: -13.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.47 ms. Allocated memory is still 117.4 MB. Free memory was 90.5 MB in the beginning and 89.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.00 ms. Allocated memory is still 117.4 MB. Free memory was 89.2 MB in the beginning and 88.4 MB in the end (delta: 757.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 374.54 ms. Allocated memory is still 117.4 MB. Free memory was 88.4 MB in the beginning and 79.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 570.32 ms. Allocated memory is still 117.4 MB. Free memory was 79.2 MB in the beginning and 58.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.35 ms. Allocated memory is still 117.4 MB. Free memory was 58.2 MB in the beginning and 57.7 MB in the end (delta: 444.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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: 29]: 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 28, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.5f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, 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=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 [2021-10-29 00:02:04,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 00:02:07,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 00:02:07,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 00:02:07,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 00:02:07,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 00:02:07,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 00:02:07,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 00:02:07,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 00:02:07,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 00:02:07,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 00:02:07,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 00:02:07,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 00:02:07,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 00:02:07,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 00:02:07,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 00:02:07,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 00:02:07,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 00:02:07,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 00:02:07,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 00:02:07,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 00:02:07,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 00:02:07,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 00:02:07,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 00:02:07,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 00:02:07,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 00:02:07,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 00:02:07,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 00:02:07,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 00:02:07,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 00:02:07,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 00:02:07,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 00:02:07,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 00:02:07,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 00:02:07,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 00:02:07,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 00:02:07,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 00:02:07,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 00:02:07,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 00:02:07,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 00:02:07,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 00:02:07,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 00:02:07,155 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-29 00:02:07,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 00:02:07,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 00:02:07,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-29 00:02:07,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-29 00:02:07,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 00:02:07,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 00:02:07,193 INFO L138 SettingsManager]: * Use SBE=true [2021-10-29 00:02:07,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 00:02:07,193 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 00:02:07,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 00:02:07,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 00:02:07,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 00:02:07,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 00:02:07,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 00:02:07,195 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 00:02:07,195 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 00:02:07,195 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 00:02:07,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 00:02:07,196 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 00:02:07,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 00:02:07,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 00:02:07,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 00:02:07,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 00:02:07,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:02:07,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 00:02:07,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 00:02:07,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 00:02:07,198 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-29 00:02:07,198 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 00:02:07,198 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-29 00:02:07,199 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-29 00:02:07,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 00:02:07,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 00:02:07,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 00:02:07,200 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_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c70b0c293d1f910083607d5ace0bd3396d2851476b1225436bb619abd3bfcaf [2021-10-29 00:02:07,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 00:02:07,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 00:02:07,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 00:02:07,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 00:02:07,750 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 00:02:07,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/floats-cdfpl/square_8.i [2021-10-29 00:02:07,854 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/data/1b9abff55/595cfc0e0ba84556b880a29cf618418f/FLAGc72aaee4f [2021-10-29 00:02:08,443 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 00:02:08,446 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/sv-benchmarks/c/floats-cdfpl/square_8.i [2021-10-29 00:02:08,454 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/data/1b9abff55/595cfc0e0ba84556b880a29cf618418f/FLAGc72aaee4f [2021-10-29 00:02:08,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/data/1b9abff55/595cfc0e0ba84556b880a29cf618418f [2021-10-29 00:02:08,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 00:02:08,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 00:02:08,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 00:02:08,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 00:02:08,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 00:02:08,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:02:08" (1/1) ... [2021-10-29 00:02:08,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a9db913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:08, skipping insertion in model container [2021-10-29 00:02:08,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:02:08" (1/1) ... [2021-10-29 00:02:08,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 00:02:08,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 00:02:09,104 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2021-10-29 00:02:09,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:02:09,128 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 00:02:09,201 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2021-10-29 00:02:09,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:02:09,232 INFO L208 MainTranslator]: Completed translation [2021-10-29 00:02:09,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:09 WrapperNode [2021-10-29 00:02:09,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 00:02:09,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 00:02:09,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 00:02:09,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 00:02:09,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:09" (1/1) ... [2021-10-29 00:02:09,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:09" (1/1) ... [2021-10-29 00:02:09,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 00:02:09,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 00:02:09,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 00:02:09,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 00:02:09,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:09" (1/1) ... [2021-10-29 00:02:09,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:09" (1/1) ... [2021-10-29 00:02:09,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:09" (1/1) ... [2021-10-29 00:02:09,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:09" (1/1) ... [2021-10-29 00:02:09,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:09" (1/1) ... [2021-10-29 00:02:09,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:09" (1/1) ... [2021-10-29 00:02:09,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:09" (1/1) ... [2021-10-29 00:02:09,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 00:02:09,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 00:02:09,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 00:02:09,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 00:02:09,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:09" (1/1) ... [2021-10-29 00:02:09,383 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:02:09,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:02:09,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 00:02:09,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 00:02:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 00:02:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 00:02:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 00:02:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 00:02:11,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 00:02:11,784 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-29 00:02:11,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:02:11 BoogieIcfgContainer [2021-10-29 00:02:11,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 00:02:11,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 00:02:11,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 00:02:11,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 00:02:11,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:02:08" (1/3) ... [2021-10-29 00:02:11,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0cccf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:02:11, skipping insertion in model container [2021-10-29 00:02:11,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:02:09" (2/3) ... [2021-10-29 00:02:11,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0cccf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:02:11, skipping insertion in model container [2021-10-29 00:02:11,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:02:11" (3/3) ... [2021-10-29 00:02:11,796 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8.i [2021-10-29 00:02:11,803 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 00:02:11,803 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 00:02:11,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 00:02:11,874 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 [2021-10-29 00:02:11,875 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 00:02:11,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-10-29 00:02:11,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 00:02:11,897 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:02:11,898 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 00:02:11,899 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:02:11,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:02:11,906 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-29 00:02:11,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:02:11,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116043705] [2021-10-29 00:02:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:02:11,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:02:11,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:02:11,933 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:02:11,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 00:02:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:02:12,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 00:02:12,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:02:12,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:02:12,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:02:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:02:13,041 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:02:13,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116043705] [2021-10-29 00:02:13,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116043705] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:02:13,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:02:13,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 00:02:13,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074669609] [2021-10-29 00:02:13,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 00:02:13,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:02:13,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 00:02:13,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 00:02:13,070 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-29 00:02:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:02:13,085 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-29 00:02:13,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 00:02:13,087 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-10-29 00:02:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:02:13,096 INFO L225 Difference]: With dead ends: 19 [2021-10-29 00:02:13,097 INFO L226 Difference]: Without dead ends: 7 [2021-10-29 00:02:13,100 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 00:02:13,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-29 00:02:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-29 00:02:13,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2021-10-29 00:02:13,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-29 00:02:13,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-29 00:02:13,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:02:13,135 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-29 00:02:13,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-29 00:02:13,135 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-29 00:02:13,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 00:02:13,136 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:02:13,136 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 00:02:13,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 00:02:13,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:02:13,347 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:02:13,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:02:13,348 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-29 00:02:13,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:02:13,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985548295] [2021-10-29 00:02:13,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:02:13,350 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:02:13,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:02:13,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:02:13,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 00:03:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:17,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 00:03:17,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:32,859 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (fp.lt ULTIMATE.start_main_~IN~0 .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) c_ULTIMATE.start_main_~result~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 00:04:23,610 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)))) (or (not (fp.geq .cse0 (_ +zero 8 24))) (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))))) (fp.lt ULTIMATE.start_main_~IN~0 .cse1)))) is different from false [2021-10-29 00:04:25,662 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)))) (or (not (fp.geq .cse0 (_ +zero 8 24))) (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))))) (fp.lt ULTIMATE.start_main_~IN~0 .cse1)))) is different from true [2021-10-29 00:04:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:25,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:04:36,445 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse0 (_ +zero 8 24)))) is different from false [2021-10-29 00:04:38,532 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2021-10-29 00:04:53,551 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse0 (_ +zero 8 24)))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) is different from false [2021-10-29 00:04:55,647 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse0 (_ +zero 8 24)))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) is different from true [2021-10-29 00:05:40,669 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~IN~0_5 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~IN~0_5 .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)))) (and (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) (not (fp.geq v_ULTIMATE.start_main_~IN~0_5 (_ +zero 8 24)))))) is different from false [2021-10-29 00:05:42,751 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~IN~0_5 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~IN~0_5 .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)))) (and (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) (not (fp.geq v_ULTIMATE.start_main_~IN~0_5 (_ +zero 8 24)))))) is different from true [2021-10-29 00:05:42,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:42,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:42,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985548295] [2021-10-29 00:05:42,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985548295] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:42,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:42,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-29 00:05:42,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496141825] [2021-10-29 00:05:42,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-29 00:05:42,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:42,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 00:05:42,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=20, Unknown=9, NotChecked=60, Total=110 [2021-10-29 00:05:42,759 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-10-29 00:05:44,856 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~IN~0_5 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~IN~0_5 .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)))) (and (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) (not (fp.geq v_ULTIMATE.start_main_~IN~0_5 (_ +zero 8 24)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 00:05:46,945 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~IN~0_5 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~IN~0_5 .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)))) (and (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) (not (fp.geq v_ULTIMATE.start_main_~IN~0_5 (_ +zero 8 24)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-29 00:05:49,029 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (.cse2 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.geq c_ULTIMATE.start_main_~IN~0 (_ +zero 8 24))) (.cse1 (fp.lt c_ULTIMATE.start_main_~IN~0 .cse3))) (or (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse1) (and (or (not .cse0) (not .cse1)) .cse2))) (or (let ((.cse4 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse4 (_ +zero 8 24)))) .cse2) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-10-29 00:05:51,122 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (.cse2 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.geq c_ULTIMATE.start_main_~IN~0 (_ +zero 8 24))) (.cse1 (fp.lt c_ULTIMATE.start_main_~IN~0 .cse3))) (or (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse1) (and (or (not .cse0) (not .cse1)) .cse2))) (or (let ((.cse4 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse4 (_ +zero 8 24)))) .cse2) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-29 00:05:53,199 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.geq c_ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.lt c_ULTIMATE.start_main_~IN~0 .cse1) (fp.geq .cse0 (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2021-10-29 00:05:55,299 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.geq c_ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.lt c_ULTIMATE.start_main_~IN~0 .cse1) (fp.geq .cse0 (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-10-29 00:05:57,396 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (fp.lt ULTIMATE.start_main_~IN~0 .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) c_ULTIMATE.start_main_~result~0)))) (fp.lt c_ULTIMATE.start_main_~result~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq c_ULTIMATE.start_main_~result~0 (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 00:05:57,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:57,407 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-10-29 00:05:57,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 00:05:57,407 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 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 6 [2021-10-29 00:05:57,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:57,408 INFO L225 Difference]: With dead ends: 7 [2021-10-29 00:05:57,408 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 00:05:57,409 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.6s TimeCoverageRelationStatistics Valid=29, Invalid=21, Unknown=16, NotChecked=144, Total=210 [2021-10-29 00:05:57,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 00:05:57,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 00:05:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:57,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 00:05:57,410 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-10-29 00:05:57,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:57,411 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 00:05:57,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-10-29 00:05:57,411 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 00:05:57,412 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 00:05:57,415 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:05:57,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:57,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:57,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 00:05:57,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 00:05:57,660 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 00:05:57,661 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-29 00:05:57,662 INFO L860 garLoopResultBuilder]: At program point L31(lines 18 32) the Hoare annotation is: true [2021-10-29 00:05:57,662 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 00:05:57,663 INFO L857 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-29 00:05:57,663 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-29 00:05:57,664 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 29) no Hoare annotation was computed. [2021-10-29 00:05:57,664 INFO L857 garLoopResultBuilder]: For program point L28-2(lines 28 29) no Hoare annotation was computed. [2021-10-29 00:05:57,665 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2021-10-29 00:05:57,665 INFO L857 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2021-10-29 00:05:57,666 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-10-29 00:05:57,670 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 00:05:57,678 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 00:05:57,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:05:57 BoogieIcfgContainer [2021-10-29 00:05:57,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 00:05:57,688 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 00:05:57,688 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 00:05:57,689 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 00:05:57,689 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:02:11" (3/4) ... [2021-10-29 00:05:57,696 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 00:05:57,711 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-29 00:05:57,711 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 00:05:57,711 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 00:05:57,712 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 00:05:57,768 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-29 00:05:57,771 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 00:05:57,777 INFO L168 Benchmark]: Toolchain (without parser) took 228973.67 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 41.1 MB in the beginning and 44.9 MB in the end (delta: -3.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:57,782 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 60.8 MB. Free memory is still 42.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:05:57,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.35 ms. Allocated memory is still 60.8 MB. Free memory was 40.8 MB in the beginning and 43.6 MB in the end (delta: -2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:57,785 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.47 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 42.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:05:57,785 INFO L168 Benchmark]: Boogie Preprocessor took 65.28 ms. Allocated memory is still 60.8 MB. Free memory was 42.0 MB in the beginning and 40.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:05:57,786 INFO L168 Benchmark]: RCFGBuilder took 2423.57 ms. Allocated memory is still 60.8 MB. Free memory was 40.8 MB in the beginning and 32.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:57,787 INFO L168 Benchmark]: TraceAbstraction took 225897.20 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 31.5 MB in the beginning and 47.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:57,787 INFO L168 Benchmark]: Witness Printer took 83.56 ms. Allocated memory is still 86.0 MB. Free memory was 47.5 MB in the beginning and 44.9 MB in the end (delta: 2.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:05:57,794 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 60.8 MB. Free memory is still 42.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 432.35 ms. Allocated memory is still 60.8 MB. Free memory was 40.8 MB in the beginning and 43.6 MB in the end (delta: -2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.47 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 42.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.28 ms. Allocated memory is still 60.8 MB. Free memory was 42.0 MB in the beginning and 40.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2423.57 ms. Allocated memory is still 60.8 MB. Free memory was 40.8 MB in the beginning and 32.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 225897.20 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 31.5 MB in the beginning and 47.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Witness Printer took 83.56 ms. Allocated memory is still 86.0 MB. Free memory was 47.5 MB in the beginning and 44.9 MB in the end (delta: 2.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 225.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 64.9s SatisfiabilityAnalysisTime, 145.4s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 3 QuantifiedInterpolants, 616 SizeOfPredicates, 6 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-29 00:05:58,035 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-29 00:05:58,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb75068-a7aa-4bbc-933a-75ae204fabd8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...