./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/cast_union_loose.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_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_loose.c -s /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/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 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 ........................................................................................................................................................................................................................................................................................... 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_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_loose.c -s /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/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 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 ....................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:20:19,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:20:19,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:20:19,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:20:19,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:20:19,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:20:19,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:20:19,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:20:19,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:20:19,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:20:19,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:20:19,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:20:19,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:20:19,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:20:19,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:20:19,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:20:19,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:20:19,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:20:19,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:20:19,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:20:19,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:20:19,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:20:19,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:20:19,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:20:19,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:20:19,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:20:19,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:20:19,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:20:19,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:20:19,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:20:19,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:20:19,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:20:19,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:20:19,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:20:19,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:20:19,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:20:19,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:20:19,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:20:19,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:20:19,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:20:19,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:20:19,610 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:20:19,650 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:20:19,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:20:19,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:20:19,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:20:19,657 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:20:19,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:20:19,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:20:19,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:20:19,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:20:19,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:20:19,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:20:19,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:20:19,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:20:19,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:20:19,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:20:19,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:20:19,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:20:19,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:20:19,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:20:19,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:20:19,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:20:19,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:20:19,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:20:19,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:20:19,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:20:19,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:20:19,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:20:19,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:20:19,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:20:19,662 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_39ee8437-9153-44ac-9a8f-19debc132029/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 [2020-11-28 03:20:19,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:20:19,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:20:19,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:20:19,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:20:19,967 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:20:19,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/../../sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-11-28 03:20:20,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/data/c22059f6a/75e286a74f8f464f938be1793db004e5/FLAG631070698 [2020-11-28 03:20:20,493 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:20:20,493 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-11-28 03:20:20,500 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/data/c22059f6a/75e286a74f8f464f938be1793db004e5/FLAG631070698 [2020-11-28 03:20:20,892 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/data/c22059f6a/75e286a74f8f464f938be1793db004e5 [2020-11-28 03:20:20,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:20:20,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:20:20,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:20,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:20:20,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:20:20,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:20" (1/1) ... [2020-11-28 03:20:20,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2789e0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:20, skipping insertion in model container [2020-11-28 03:20:20,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:20" (1/1) ... [2020-11-28 03:20:20,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:20:20,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:20:21,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:21,245 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:20:21,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:21,303 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:20:21,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:21 WrapperNode [2020-11-28 03:20:21,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:21,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:21,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:20:21,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:20:21,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:21" (1/1) ... [2020-11-28 03:20:21,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:21" (1/1) ... [2020-11-28 03:20:21,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:21,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:20:21,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:20:21,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:20:21,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:21" (1/1) ... [2020-11-28 03:20:21,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:21" (1/1) ... [2020-11-28 03:20:21,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:21" (1/1) ... [2020-11-28 03:20:21,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:21" (1/1) ... [2020-11-28 03:20:21,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:21" (1/1) ... [2020-11-28 03:20:21,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:21" (1/1) ... [2020-11-28 03:20:21,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:21" (1/1) ... [2020-11-28 03:20:21,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:20:21,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:20:21,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:20:21,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:20:21,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/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 [2020-11-28 03:20:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:20:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:20:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 03:20:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:20:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:20:21,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:20:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:20:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:20:21,797 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:20:21,797 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-28 03:20:21,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:21 BoogieIcfgContainer [2020-11-28 03:20:21,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:20:21,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:20:21,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:20:21,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:20:21,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:20:20" (1/3) ... [2020-11-28 03:20:21,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b48812e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:21, skipping insertion in model container [2020-11-28 03:20:21,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:21" (2/3) ... [2020-11-28 03:20:21,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b48812e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:21, skipping insertion in model container [2020-11-28 03:20:21,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:21" (3/3) ... [2020-11-28 03:20:21,826 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2020-11-28 03:20:21,837 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:20:21,844 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:20:21,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:20:21,897 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:20:21,897 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:20:21,898 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:20:21,898 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:20:21,898 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:20:21,898 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:20:21,898 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:20:21,898 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:20:21,914 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-28 03:20:21,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:20:21,919 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:21,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:21,921 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:21,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:21,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2020-11-28 03:20:21,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:21,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562263799] [2020-11-28 03:20:21,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:22,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562263799] [2020-11-28 03:20:22,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:22,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:20:22,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634257224] [2020-11-28 03:20:22,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:20:22,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:22,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:20:22,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:20:22,143 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-28 03:20:22,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:22,158 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-28 03:20:22,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:20:22,160 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-28 03:20:22,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:22,167 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:20:22,168 INFO L226 Difference]: Without dead ends: 8 [2020-11-28 03:20:22,170 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 [2020-11-28 03:20:22,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-28 03:20:22,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-28 03:20:22,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 03:20:22,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2020-11-28 03:20:22,202 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2020-11-28 03:20:22,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:22,202 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2020-11-28 03:20:22,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:20:22,203 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-11-28 03:20:22,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:20:22,203 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:22,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:22,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:20:22,204 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:22,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:22,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2020-11-28 03:20:22,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:22,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60745196] [2020-11-28 03:20:22,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:22,260 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:22,294 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:22,318 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:22,324 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:20:22,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:20:22,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:20:22 BoogieIcfgContainer [2020-11-28 03:20:22,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:20:22,355 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:20:22,355 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:20:22,356 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:20:22,356 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:21" (3/4) ... [2020-11-28 03:20:22,359 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:20:22,360 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:20:22,362 INFO L168 Benchmark]: Toolchain (without parser) took 1464.97 ms. Allocated memory is still 111.1 MB. Free memory was 83.6 MB in the beginning and 48.6 MB in the end (delta: 35.0 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:22,363 INFO L168 Benchmark]: CDTParser took 0.26 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. [2020-11-28 03:20:22,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.73 ms. Allocated memory is still 111.1 MB. Free memory was 83.3 MB in the beginning and 88.4 MB in the end (delta: -5.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:22,364 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.93 ms. Allocated memory is still 111.1 MB. Free memory was 88.4 MB in the beginning and 86.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:22,365 INFO L168 Benchmark]: Boogie Preprocessor took 38.30 ms. Allocated memory is still 111.1 MB. Free memory was 86.9 MB in the beginning and 86.0 MB in the end (delta: 923.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:22,366 INFO L168 Benchmark]: RCFGBuilder took 400.73 ms. Allocated memory is still 111.1 MB. Free memory was 85.4 MB in the beginning and 71.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:22,367 INFO L168 Benchmark]: TraceAbstraction took 551.94 ms. Allocated memory is still 111.1 MB. Free memory was 71.6 MB in the beginning and 49.2 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:22,367 INFO L168 Benchmark]: Witness Printer took 4.66 ms. Allocated memory is still 111.1 MB. Free memory was 49.2 MB in the beginning and 48.6 MB in the end (delta: 581.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:22,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 394.73 ms. Allocated memory is still 111.1 MB. Free memory was 83.3 MB in the beginning and 88.4 MB in the end (delta: -5.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.93 ms. Allocated memory is still 111.1 MB. Free memory was 88.4 MB in the beginning and 86.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.30 ms. Allocated memory is still 111.1 MB. Free memory was 86.9 MB in the beginning and 86.0 MB in the end (delta: 923.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 400.73 ms. Allocated memory is still 111.1 MB. Free memory was 85.4 MB in the beginning and 71.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 551.94 ms. Allocated memory is still 111.1 MB. Free memory was 71.6 MB in the beginning and 49.2 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.66 ms. Allocated memory is still 111.1 MB. Free memory was 49.2 MB in the beginning and 48.6 MB in the end (delta: 581.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 27, overapproximation of bitwiseXor at line 26. Possible FailurePath: [L32] int a; [L33] double r; [L35] a = __VERIFIER_nondet_int() [L11] COND FALSE !(!cond) [L22] union u x, y; [L23] x.i[0] = 0x43300000 [L24] EXPR x.i[0] [L24] y.i[0] = x.i[0] [L25] x.i[1] = 0x80000000 [L26] EXPR x.i[1] [L26] y.i[1] = i ^ x.i[1] [L27] EXPR y.d [L27] EXPR x.d [L27] return y.d - x.d; [L27] return y.d - x.d; [L27] return y.d - x.d; [L38] r = cast(a) [L13] COND TRUE !(cond) [L3] __assert_fail("0", "cast_union_loose.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 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=13occurred 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, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 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 [2020-11-28 03:20:25,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:20:25,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:20:25,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:20:25,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:20:25,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:20:25,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:20:25,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:20:25,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:20:25,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:20:25,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:20:25,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:20:25,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:20:25,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:20:25,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:20:25,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:20:25,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:20:25,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:20:25,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:20:25,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:20:25,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:20:25,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:20:25,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:20:25,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:20:25,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:20:25,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:20:25,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:20:25,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:20:25,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:20:25,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:20:25,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:20:25,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:20:25,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:20:25,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:20:25,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:20:25,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:20:25,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:20:25,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:20:25,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:20:25,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:20:25,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:20:25,269 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:20:25,315 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:20:25,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:20:25,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:20:25,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:20:25,319 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:20:25,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:20:25,320 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:20:25,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:20:25,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:20:25,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:20:25,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:20:25,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:20:25,323 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:20:25,323 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:20:25,323 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:20:25,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:20:25,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:20:25,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:20:25,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:20:25,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:20:25,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:20:25,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:20:25,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:20:25,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:20:25,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:20:25,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:20:25,327 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:20:25,327 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:20:25,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:20:25,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:20:25,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:20:25,328 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_39ee8437-9153-44ac-9a8f-19debc132029/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 [2020-11-28 03:20:25,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:20:25,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:20:25,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:20:25,803 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:20:25,803 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:20:25,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/../../sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-11-28 03:20:25,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/data/1ffa9d7a6/ac942ca5f9544307bdb86f4fe0e299f2/FLAGfbdab1756 [2020-11-28 03:20:26,440 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:20:26,440 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-11-28 03:20:26,448 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/data/1ffa9d7a6/ac942ca5f9544307bdb86f4fe0e299f2/FLAGfbdab1756 [2020-11-28 03:20:26,797 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/data/1ffa9d7a6/ac942ca5f9544307bdb86f4fe0e299f2 [2020-11-28 03:20:26,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:20:26,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:20:26,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:26,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:20:26,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:20:26,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:26" (1/1) ... [2020-11-28 03:20:26,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@766d833f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:26, skipping insertion in model container [2020-11-28 03:20:26,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:26" (1/1) ... [2020-11-28 03:20:26,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:20:26,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:20:26,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:27,007 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:20:27,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:27,067 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:20:27,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:27 WrapperNode [2020-11-28 03:20:27,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:27,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:27,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:20:27,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:20:27,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:27" (1/1) ... [2020-11-28 03:20:27,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:27" (1/1) ... [2020-11-28 03:20:27,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:27,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:20:27,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:20:27,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:20:27,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:27" (1/1) ... [2020-11-28 03:20:27,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:27" (1/1) ... [2020-11-28 03:20:27,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:27" (1/1) ... [2020-11-28 03:20:27,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:27" (1/1) ... [2020-11-28 03:20:27,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:27" (1/1) ... [2020-11-28 03:20:27,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:27" (1/1) ... [2020-11-28 03:20:27,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:27" (1/1) ... [2020-11-28 03:20:27,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:20:27,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:20:27,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:20:27,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:20:27,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/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 [2020-11-28 03:20:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 03:20:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:20:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:20:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:20:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:20:27,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:20:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:20:27,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:20:27,887 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:20:27,887 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-28 03:20:27,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:27 BoogieIcfgContainer [2020-11-28 03:20:27,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:20:27,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:20:27,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:20:27,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:20:27,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:20:26" (1/3) ... [2020-11-28 03:20:27,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a2cb71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:27, skipping insertion in model container [2020-11-28 03:20:27,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:27" (2/3) ... [2020-11-28 03:20:27,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a2cb71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:27, skipping insertion in model container [2020-11-28 03:20:27,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:27" (3/3) ... [2020-11-28 03:20:27,899 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2020-11-28 03:20:27,915 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:20:27,920 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:20:27,933 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:20:27,968 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:20:27,968 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:20:27,969 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:20:27,969 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:20:27,969 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:20:27,969 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:20:27,969 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:20:27,970 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:20:27,983 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-28 03:20:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:20:27,994 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:27,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:27,995 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:28,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:28,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2020-11-28 03:20:28,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:20:28,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131940527] [2020-11-28 03:20:28,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/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 [2020-11-28 03:20:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:28,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:20:28,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:28,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:20:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:28,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131940527] [2020-11-28 03:20:28,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:28,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:20:28,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564495115] [2020-11-28 03:20:28,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:20:28,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:20:28,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:20:28,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:20:28,282 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-28 03:20:28,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:28,298 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-28 03:20:28,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:20:28,299 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-28 03:20:28,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:28,307 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:20:28,308 INFO L226 Difference]: Without dead ends: 8 [2020-11-28 03:20:28,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:20:28,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-28 03:20:28,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-28 03:20:28,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 03:20:28,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2020-11-28 03:20:28,343 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2020-11-28 03:20:28,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:28,343 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2020-11-28 03:20:28,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:20:28,344 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-11-28 03:20:28,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:20:28,345 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:28,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:28,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:20:28,562 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:28,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:28,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2020-11-28 03:20:28,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:20:28,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10134745] [2020-11-28 03:20:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/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 [2020-11-28 03:20:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:28,770 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:28,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:29,004 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:20:29,004 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:20:29,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:20:29,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:20:29 BoogieIcfgContainer [2020-11-28 03:20:29,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:20:29,244 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:20:29,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:20:29,244 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:20:29,245 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:27" (3/4) ... [2020-11-28 03:20:29,247 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:20:29,291 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_39ee8437-9153-44ac-9a8f-19debc132029/bin/uautomizer/witness.graphml [2020-11-28 03:20:29,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:20:29,294 INFO L168 Benchmark]: Toolchain (without parser) took 2490.79 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 48.4 MB in the beginning and 63.0 MB in the end (delta: -14.7 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:29,294 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 65.0 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:29,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.62 ms. Allocated memory is still 65.0 MB. Free memory was 48.1 MB in the beginning and 37.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:29,296 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.14 ms. Allocated memory is still 65.0 MB. Free memory was 37.4 MB in the beginning and 48.9 MB in the end (delta: -11.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:29,296 INFO L168 Benchmark]: Boogie Preprocessor took 56.76 ms. Allocated memory is still 65.0 MB. Free memory was 48.9 MB in the beginning and 47.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:29,297 INFO L168 Benchmark]: RCFGBuilder took 666.41 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 34.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:29,298 INFO L168 Benchmark]: TraceAbstraction took 1351.53 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 33.8 MB in the beginning and 64.6 MB in the end (delta: -30.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:29,307 INFO L168 Benchmark]: Witness Printer took 47.77 ms. Allocated memory is still 83.9 MB. Free memory was 64.6 MB in the beginning and 63.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:29,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 65.0 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.62 ms. Allocated memory is still 65.0 MB. Free memory was 48.1 MB in the beginning and 37.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.14 ms. Allocated memory is still 65.0 MB. Free memory was 37.4 MB in the beginning and 48.9 MB in the end (delta: -11.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.76 ms. Allocated memory is still 65.0 MB. Free memory was 48.9 MB in the beginning and 47.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 666.41 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 34.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1351.53 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 33.8 MB in the beginning and 64.6 MB in the end (delta: -30.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * Witness Printer took 47.77 ms. Allocated memory is still 83.9 MB. Free memory was 64.6 MB in the beginning and 63.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L32] int a; [L33] double r; [L35] a = __VERIFIER_nondet_int() [L11] COND FALSE !(!cond) [L22] union u x, y; [L23] x.i[0] = 0x43300000 [L24] EXPR x.i[0] [L24] y.i[0] = x.i[0] [L25] x.i[1] = 0x80000000 [L26] EXPR x.i[1] [L26] y.i[1] = i ^ x.i[1] [L27] EXPR y.d [L27] EXPR x.d [L27] return y.d - x.d; [L27] return y.d - x.d; [L27] return y.d - x.d; [L38] r = cast(a) [L13] COND TRUE !(cond) [L3] __assert_fail("0", "cast_union_loose.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...