./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer --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 4353b03ed39dd917d13c7cd6163e83d6972334fc ............................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer --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 4353b03ed39dd917d13c7cd6163e83d6972334fc ...................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:43:45,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:43:45,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:43:45,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:43:45,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:43:45,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:43:45,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:43:45,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:43:45,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:43:45,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:43:45,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:43:45,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:43:45,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:43:45,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:43:45,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:43:45,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:43:45,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:43:45,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:43:45,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:43:45,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:43:45,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:43:45,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:43:45,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:43:45,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:43:45,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:43:45,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:43:45,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:43:45,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:43:45,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:43:45,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:43:45,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:43:45,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:43:45,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:43:45,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:43:45,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:43:45,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:43:45,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:43:45,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:43:45,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:43:45,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:43:45,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:43:45,323 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:43:45,377 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:43:45,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:43:45,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:43:45,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:43:45,385 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:43:45,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:43:45,386 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:43:45,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:43:45,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:43:45,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:43:45,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:43:45,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:43:45,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:43:45,389 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:43:45,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:43:45,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:43:45,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:43:45,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:43:45,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:43:45,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:43:45,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:43:45,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:43:45,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:43:45,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:43:45,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:43:45,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:43:45,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:43:45,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:43:45,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:43:45,393 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-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4353b03ed39dd917d13c7cd6163e83d6972334fc [2020-11-30 00:43:45,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:43:45,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:43:45,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:43:45,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:43:45,804 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:43:45,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-11-30 00:43:45,911 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/data/f612fbea0/b88767523fff4e7a87b6e4a0d2979df8/FLAG276a2339d [2020-11-30 00:43:46,612 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:43:46,612 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-11-30 00:43:46,627 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/data/f612fbea0/b88767523fff4e7a87b6e4a0d2979df8/FLAG276a2339d [2020-11-30 00:43:46,962 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/data/f612fbea0/b88767523fff4e7a87b6e4a0d2979df8 [2020-11-30 00:43:46,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:43:46,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:43:46,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:43:46,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:43:46,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:43:46,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:43:46" (1/1) ... [2020-11-30 00:43:46,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2304a3f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:46, skipping insertion in model container [2020-11-30 00:43:46,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:43:46" (1/1) ... [2020-11-30 00:43:46,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:43:47,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:43:47,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:43:47,212 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:43:47,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:43:47,281 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:43:47,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:47 WrapperNode [2020-11-30 00:43:47,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:43:47,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:43:47,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:43:47,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:43:47,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:47" (1/1) ... [2020-11-30 00:43:47,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:47" (1/1) ... [2020-11-30 00:43:47,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:43:47,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:43:47,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:43:47,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:43:47,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:47" (1/1) ... [2020-11-30 00:43:47,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:47" (1/1) ... [2020-11-30 00:43:47,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:47" (1/1) ... [2020-11-30 00:43:47,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:47" (1/1) ... [2020-11-30 00:43:47,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:47" (1/1) ... [2020-11-30 00:43:47,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:47" (1/1) ... [2020-11-30 00:43:47,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:47" (1/1) ... [2020-11-30 00:43:47,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:43:47,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:43:47,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:43:47,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:43:47,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:43:47,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:43:47,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:43:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:43:47,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:43:47,918 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:43:47,919 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 00:43:47,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:47 BoogieIcfgContainer [2020-11-30 00:43:47,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:43:47,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:43:47,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:43:47,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:43:47,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:43:46" (1/3) ... [2020-11-30 00:43:47,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e569a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:43:47, skipping insertion in model container [2020-11-30 00:43:47,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:47" (2/3) ... [2020-11-30 00:43:47,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e569a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:43:47, skipping insertion in model container [2020-11-30 00:43:47,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:47" (3/3) ... [2020-11-30 00:43:47,932 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2020-11-30 00:43:47,945 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:43:47,950 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:43:47,980 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:43:48,030 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:43:48,030 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:43:48,030 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:43:48,030 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:43:48,031 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:43:48,031 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:43:48,031 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:43:48,031 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:43:48,051 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-30 00:43:48,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 00:43:48,058 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:48,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:43:48,059 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:48,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:48,068 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2020-11-30 00:43:48,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:48,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154464355] [2020-11-30 00:43:48,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:48,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154464355] [2020-11-30 00:43:48,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:48,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:43:48,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134809301] [2020-11-30 00:43:48,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:43:48,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:48,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:43:48,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:43:48,319 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-11-30 00:43:48,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:48,335 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-11-30 00:43:48,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:43:48,336 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-30 00:43:48,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:48,348 INFO L225 Difference]: With dead ends: 18 [2020-11-30 00:43:48,348 INFO L226 Difference]: Without dead ends: 7 [2020-11-30 00:43:48,352 INFO L677 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 [2020-11-30 00:43:48,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-11-30 00:43:48,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-30 00:43:48,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 00:43:48,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-11-30 00:43:48,395 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-11-30 00:43:48,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:48,396 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-11-30 00:43:48,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:43:48,398 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-11-30 00:43:48,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 00:43:48,398 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:48,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:43:48,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:43:48,399 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:48,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:48,403 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2020-11-30 00:43:48,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:48,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132181518] [2020-11-30 00:43:48,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:43:48,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:43:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:43:48,494 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:43:48,532 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:43:48,533 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:43:48,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:43:48,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:43:48 BoogieIcfgContainer [2020-11-30 00:43:48,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:43:48,572 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:43:48,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:43:48,572 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:43:48,573 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:47" (3/4) ... [2020-11-30 00:43:48,580 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:43:48,581 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:43:48,584 INFO L168 Benchmark]: Toolchain (without parser) took 1613.81 ms. Allocated memory is still 111.1 MB. Free memory was 83.5 MB in the beginning and 57.0 MB in the end (delta: 26.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:48,585 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 83.9 MB. Free memory is still 41.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:43:48,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.36 ms. Allocated memory is still 111.1 MB. Free memory was 83.5 MB in the beginning and 89.0 MB in the end (delta: -5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:48,589 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.02 ms. Allocated memory is still 111.1 MB. Free memory was 89.0 MB in the beginning and 87.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:43:48,590 INFO L168 Benchmark]: Boogie Preprocessor took 24.11 ms. Allocated memory is still 111.1 MB. Free memory was 87.5 MB in the beginning and 86.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:48,591 INFO L168 Benchmark]: RCFGBuilder took 569.59 ms. Allocated memory is still 111.1 MB. Free memory was 86.3 MB in the beginning and 76.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:48,594 INFO L168 Benchmark]: TraceAbstraction took 648.66 ms. Allocated memory is still 111.1 MB. Free memory was 75.8 MB in the beginning and 57.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:48,594 INFO L168 Benchmark]: Witness Printer took 8.95 ms. Allocated memory is still 111.1 MB. Free memory is still 57.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:43:48,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 83.9 MB. Free memory is still 41.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.36 ms. Allocated memory is still 111.1 MB. Free memory was 83.5 MB in the beginning and 89.0 MB in the end (delta: -5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.02 ms. Allocated memory is still 111.1 MB. Free memory was 89.0 MB in the beginning and 87.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.11 ms. Allocated memory is still 111.1 MB. Free memory was 87.5 MB in the beginning and 86.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 569.59 ms. Allocated memory is still 111.1 MB. Free memory was 86.3 MB in the beginning and 76.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 648.66 ms. Allocated memory is still 111.1 MB. Free memory was 75.8 MB in the beginning and 57.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 8.95 ms. Allocated memory is still 111.1 MB. Free memory is still 57.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L10] COND FALSE !(!(a==1 || a==0.5 || a==2 || a==3 || a==0.1)) [L11] b=a [L12] a/=2 [L13] a*=2 [L14] COND TRUE !(a==b) [L4] __assert_fail("0", "float5.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 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, 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, 25 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:43:51,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:43:51,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:43:51,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:43:51,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:43:51,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:43:51,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:43:51,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:43:51,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:43:51,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:43:51,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:43:51,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:43:51,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:43:51,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:43:51,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:43:51,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:43:51,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:43:51,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:43:51,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:43:51,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:43:51,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:43:51,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:43:51,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:43:51,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:43:51,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:43:51,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:43:51,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:43:51,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:43:51,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:43:51,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:43:51,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:43:51,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:43:51,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:43:51,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:43:51,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:43:51,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:43:51,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:43:51,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:43:51,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:43:51,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:43:51,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:43:51,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:43:51,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:43:51,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:43:51,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:43:51,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:43:51,761 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:43:51,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:43:51,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:43:51,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:43:51,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:43:51,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:43:51,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:43:51,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:43:51,764 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:43:51,764 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:43:51,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:43:51,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:43:51,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:43:51,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:43:51,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:43:51,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:43:51,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:43:51,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:43:51,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:43:51,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:43:51,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:43:51,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:43:51,767 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:43:51,767 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:43:51,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:43:51,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:43:51,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:43:51,768 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-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4353b03ed39dd917d13c7cd6163e83d6972334fc [2020-11-30 00:43:52,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:43:52,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:43:52,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:43:52,337 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:43:52,339 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:43:52,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-11-30 00:43:52,439 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/data/614383662/8dd8a9e1728a4eca93c59785ad9e3e52/FLAGe056f75ee [2020-11-30 00:43:53,051 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:43:53,052 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-11-30 00:43:53,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/data/614383662/8dd8a9e1728a4eca93c59785ad9e3e52/FLAGe056f75ee [2020-11-30 00:43:53,424 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/data/614383662/8dd8a9e1728a4eca93c59785ad9e3e52 [2020-11-30 00:43:53,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:43:53,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:43:53,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:43:53,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:43:53,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:43:53,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:43:53" (1/1) ... [2020-11-30 00:43:53,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19052d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:53, skipping insertion in model container [2020-11-30 00:43:53,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:43:53" (1/1) ... [2020-11-30 00:43:53,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:43:53,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:43:53,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:43:53,708 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:43:53,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:43:53,763 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:43:53,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:53 WrapperNode [2020-11-30 00:43:53,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:43:53,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:43:53,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:43:53,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:43:53,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:53" (1/1) ... [2020-11-30 00:43:53,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:53" (1/1) ... [2020-11-30 00:43:53,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:43:53,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:43:53,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:43:53,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:43:53,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:53" (1/1) ... [2020-11-30 00:43:53,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:53" (1/1) ... [2020-11-30 00:43:53,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:53" (1/1) ... [2020-11-30 00:43:53,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:53" (1/1) ... [2020-11-30 00:43:53,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:53" (1/1) ... [2020-11-30 00:43:53,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:53" (1/1) ... [2020-11-30 00:43:53,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:53" (1/1) ... [2020-11-30 00:43:53,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:43:53,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:43:53,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:43:53,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:43:53,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:43:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:43:54,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:43:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:43:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:43:54,649 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:43:54,650 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 00:43:54,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:54 BoogieIcfgContainer [2020-11-30 00:43:54,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:43:54,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:43:54,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:43:54,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:43:54,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:43:53" (1/3) ... [2020-11-30 00:43:54,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd45fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:43:54, skipping insertion in model container [2020-11-30 00:43:54,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:53" (2/3) ... [2020-11-30 00:43:54,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd45fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:43:54, skipping insertion in model container [2020-11-30 00:43:54,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:54" (3/3) ... [2020-11-30 00:43:54,666 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2020-11-30 00:43:54,684 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:43:54,689 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:43:54,705 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:43:54,750 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:43:54,750 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:43:54,750 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:43:54,750 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:43:54,750 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:43:54,751 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:43:54,751 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:43:54,751 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:43:54,765 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-30 00:43:54,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 00:43:54,770 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:54,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:43:54,771 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:54,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:54,776 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2020-11-30 00:43:54,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:43:54,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026219741] [2020-11-30 00:43:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 00:43:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:55,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:43:55,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:43:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:55,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:43:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:55,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026219741] [2020-11-30 00:43:55,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:55,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:43:55,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192096846] [2020-11-30 00:43:55,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:43:55,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:43:55,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:43:55,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:43:55,064 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-11-30 00:43:55,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:55,079 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-11-30 00:43:55,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:43:55,081 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-30 00:43:55,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:55,091 INFO L225 Difference]: With dead ends: 18 [2020-11-30 00:43:55,092 INFO L226 Difference]: Without dead ends: 7 [2020-11-30 00:43:55,095 INFO L677 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 [2020-11-30 00:43:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-11-30 00:43:55,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-30 00:43:55,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 00:43:55,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-11-30 00:43:55,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-11-30 00:43:55,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:55,133 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-11-30 00:43:55,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:43:55,133 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-11-30 00:43:55,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 00:43:55,134 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:55,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:43:55,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:43:55,358 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:55,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:55,360 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2020-11-30 00:43:55,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:43:55,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981483587] [2020-11-30 00:43:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 00:43:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:55,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:43:55,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:43:57,012 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2020-11-30 00:44:03,165 WARN L193 SmtUtils]: Spent 4.38 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-30 00:44:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:44:03,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:44:10,606 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-11-30 00:44:10,612 INFO L603 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-11-30 00:44:14,193 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse0) .cse0)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))) (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse1) .cse1)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))) (fp.eq (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse2) .cse2)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq ULTIMATE.start_main_~a~0 .cse3)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse3) .cse3) ULTIMATE.start_main_~a~0)))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse4) .cse4)) ULTIMATE.start_main_~a~0)))) is different from true [2020-11-30 00:44:18,074 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse0) .cse0)) ULTIMATE.start_main_~a~0))) (forall ((v_prenex_1 (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_1 .cse1) .cse1)) v_prenex_1) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_1) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))))) (forall ((v_prenex_3 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq v_prenex_3 .cse2)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_3 .cse2) .cse2) v_prenex_3)))) (forall ((v_prenex_2 (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_2 .cse3) .cse3)) v_prenex_2) (not (fp.eq v_prenex_2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))))) (forall ((v_prenex_4 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_4) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_4 .cse4) .cse4)) v_prenex_4)))) is different from true [2020-11-30 00:44:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:44:18,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981483587] [2020-11-30 00:44:18,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:44:18,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2020-11-30 00:44:18,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747810354] [2020-11-30 00:44:18,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 00:44:18,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:44:18,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 00:44:18,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=29, Unknown=2, NotChecked=22, Total=72 [2020-11-30 00:44:18,081 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand 9 states. [2020-11-30 00:44:20,830 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse0) .cse0)) ULTIMATE.start_main_~a~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_prenex_1 (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_1 .cse1) .cse1)) v_prenex_1) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_1) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))))) (forall ((v_prenex_3 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq v_prenex_3 .cse2)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_3 .cse2) .cse2) v_prenex_3)))) (forall ((v_prenex_2 (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_2 .cse3) .cse3)) v_prenex_2) (not (fp.eq v_prenex_2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))))) (forall ((v_prenex_4 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_4) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_4 .cse4) .cse4)) v_prenex_4)))) is different from false [2020-11-30 00:44:22,905 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse0) .cse0)) ULTIMATE.start_main_~a~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_prenex_1 (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_1 .cse1) .cse1)) v_prenex_1) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_1) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))))) (forall ((v_prenex_3 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq v_prenex_3 .cse2)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_3 .cse2) .cse2) v_prenex_3)))) (forall ((v_prenex_2 (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_2 .cse3) .cse3)) v_prenex_2) (not (fp.eq v_prenex_2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))))) (forall ((v_prenex_4 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_4) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_4 .cse4) .cse4)) v_prenex_4)))) is different from true [2020-11-30 00:44:24,932 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse0) .cse0)) ULTIMATE.start_main_~a~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))) (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse1) .cse1)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))) (fp.eq (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse2) .cse2)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq ULTIMATE.start_main_~a~0 .cse3)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse3) .cse3) ULTIMATE.start_main_~a~0)))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse4) .cse4)) ULTIMATE.start_main_~a~0)))) is different from false [2020-11-30 00:44:27,020 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse0) .cse0)) ULTIMATE.start_main_~a~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))) (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse1) .cse1)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))) (fp.eq (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse2) .cse2)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq ULTIMATE.start_main_~a~0 .cse3)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse3) .cse3) ULTIMATE.start_main_~a~0)))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse4) .cse4)) ULTIMATE.start_main_~a~0)))) is different from true [2020-11-30 00:44:40,048 WARN L193 SmtUtils]: Spent 10.40 s on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2020-11-30 00:44:40,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:44:40,049 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-11-30 00:44:40,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:44:40,050 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 6 [2020-11-30 00:44:40,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:44:40,051 INFO L225 Difference]: With dead ends: 7 [2020-11-30 00:44:40,051 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:44:40,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 42.0s TimeCoverageRelationStatistics Valid=30, Invalid=36, Unknown=6, NotChecked=60, Total=132 [2020-11-30 00:44:40,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:44:40,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:44:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:44:40,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:44:40,054 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-11-30 00:44:40,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:44:40,054 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:44:40,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 00:44:40,054 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:44:40,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:44:40,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:44:40,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:44:40,268 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:44:40,269 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:44:40,269 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:44:40,269 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:44:40,269 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 00:44:40,269 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-11-30 00:44:40,269 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-11-30 00:44:40,270 INFO L274 CegarLoopResult]: For program point L10-2(line 10) no Hoare annotation was computed. [2020-11-30 00:44:40,270 INFO L274 CegarLoopResult]: For program point L6(lines 6 15) no Hoare annotation was computed. [2020-11-30 00:44:40,270 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-30 00:44:40,270 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-11-30 00:44:40,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:44:40 BoogieIcfgContainer [2020-11-30 00:44:40,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:44:40,277 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:44:40,277 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:44:40,278 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:44:40,278 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:54" (3/4) ... [2020-11-30 00:44:40,282 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:44:40,299 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 00:44:40,299 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:44:40,299 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 00:44:40,300 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:44:40,338 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_da0eb90c-703d-4d63-b4de-dd3faf087e1a/bin/uautomizer/witness.graphml [2020-11-30 00:44:40,340 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:44:40,342 INFO L168 Benchmark]: Toolchain (without parser) took 46910.91 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 37.1 MB in the beginning and 39.8 MB in the end (delta: -2.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:40,343 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 58.7 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:44:40,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.53 ms. Allocated memory is still 58.7 MB. Free memory was 37.0 MB in the beginning and 27.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:40,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.72 ms. Allocated memory is still 58.7 MB. Free memory was 27.2 MB in the beginning and 41.5 MB in the end (delta: -14.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:40,346 INFO L168 Benchmark]: Boogie Preprocessor took 62.55 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 40.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:44:40,348 INFO L168 Benchmark]: RCFGBuilder took 730.82 ms. Allocated memory is still 58.7 MB. Free memory was 40.4 MB in the beginning and 29.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:40,354 INFO L168 Benchmark]: TraceAbstraction took 45620.25 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 29.2 MB in the beginning and 42.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:40,355 INFO L168 Benchmark]: Witness Printer took 62.81 ms. Allocated memory is still 75.5 MB. Free memory was 42.3 MB in the beginning and 39.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:40,358 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 58.7 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 330.53 ms. Allocated memory is still 58.7 MB. Free memory was 37.0 MB in the beginning and 27.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.72 ms. Allocated memory is still 58.7 MB. Free memory was 27.2 MB in the beginning and 41.5 MB in the end (delta: -14.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.55 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 40.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 730.82 ms. Allocated memory is still 58.7 MB. Free memory was 40.4 MB in the beginning and 29.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 45620.25 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 29.2 MB in the beginning and 42.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Witness Printer took 62.81 ms. Allocated memory is still 75.5 MB. Free memory was 42.3 MB in the beginning and 39.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 45.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 22.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 42.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, 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, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 22.5s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 2 QuantifiedInterpolants, 1590 SizeOfPredicates, 4 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 6 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...