./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_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_loose.c -s /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/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_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_loose.c -s /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/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 [2020-11-30 00:38:21,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:38:21,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:38:21,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:38:21,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:38:21,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:38:21,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:38:21,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:38:21,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:38:21,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:38:21,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:38:21,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:38:21,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:38:21,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:38:21,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:38:21,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:38:21,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:38:21,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:38:21,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:38:21,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:38:21,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:38:21,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:38:21,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:38:21,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:38:21,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:38:21,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:38:21,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:38:21,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:38:21,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:38:21,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:38:21,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:38:21,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:38:21,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:38:21,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:38:21,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:38:21,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:38:21,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:38:21,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:38:21,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:38:21,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:38:21,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:38:21,232 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:38:21,277 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:38:21,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:38:21,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:38:21,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:38:21,281 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:38:21,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:38:21,281 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:38:21,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:38:21,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:38:21,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:38:21,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:38:21,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:38:21,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:38:21,285 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:38:21,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:38:21,285 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:38:21,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:38:21,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:38:21,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:38:21,286 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:38:21,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:38:21,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:38:21,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:38:21,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:38:21,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:38:21,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:38:21,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:38:21,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:38:21,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:38:21,289 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_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 [2020-11-30 00:38:21,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:38:21,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:38:21,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:38:21,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:38:21,627 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:38:21,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/../../sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-11-30 00:38:21,724 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/data/9aad8b40d/898f1ec026cd46c988788824cf123eb9/FLAGaf4274c4c [2020-11-30 00:38:22,242 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:38:22,242 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-11-30 00:38:22,248 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/data/9aad8b40d/898f1ec026cd46c988788824cf123eb9/FLAGaf4274c4c [2020-11-30 00:38:22,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/data/9aad8b40d/898f1ec026cd46c988788824cf123eb9 [2020-11-30 00:38:22,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:38:22,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:38:22,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:38:22,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:38:22,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:38:22,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:38:22" (1/1) ... [2020-11-30 00:38:22,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7532f5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:22, skipping insertion in model container [2020-11-30 00:38:22,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:38:22" (1/1) ... [2020-11-30 00:38:22,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:38:22,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:38:22,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:38:22,857 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:38:22,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:38:22,943 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:38:22,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:22 WrapperNode [2020-11-30 00:38:22,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:38:22,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:38:22,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:38:22,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:38:22,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:22" (1/1) ... [2020-11-30 00:38:22,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:22" (1/1) ... [2020-11-30 00:38:22,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:38:22,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:38:22,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:38:22,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:38:22,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:22" (1/1) ... [2020-11-30 00:38:22,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:22" (1/1) ... [2020-11-30 00:38:22,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:22" (1/1) ... [2020-11-30 00:38:22,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:22" (1/1) ... [2020-11-30 00:38:23,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:22" (1/1) ... [2020-11-30 00:38:23,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:22" (1/1) ... [2020-11-30 00:38:23,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:22" (1/1) ... [2020-11-30 00:38:23,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:38:23,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:38:23,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:38:23,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:38:23,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/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 00:38:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:38:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:38:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 00:38:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:38:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:38:23,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:38:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:38:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:38:23,357 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:38:23,357 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 00:38:23,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:38:23 BoogieIcfgContainer [2020-11-30 00:38:23,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:38:23,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:38:23,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:38:23,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:38:23,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:38:22" (1/3) ... [2020-11-30 00:38:23,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdee226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:38:23, skipping insertion in model container [2020-11-30 00:38:23,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:22" (2/3) ... [2020-11-30 00:38:23,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdee226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:38:23, skipping insertion in model container [2020-11-30 00:38:23,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:38:23" (3/3) ... [2020-11-30 00:38:23,388 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2020-11-30 00:38:23,406 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:38:23,410 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:38:23,435 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:38:23,493 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:38:23,494 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:38:23,494 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:38:23,494 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:38:23,494 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:38:23,495 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:38:23,495 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:38:23,495 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:38:23,508 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-30 00:38:23,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:38:23,529 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:38:23,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:38:23,543 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:38:23,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:23,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2020-11-30 00:38:23,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:38:23,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861309077] [2020-11-30 00:38:23,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:38:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:23,768 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 00:38:23,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861309077] [2020-11-30 00:38:23,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:38:23,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:38:23,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095429192] [2020-11-30 00:38:23,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:38:23,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:38:23,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:38:23,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:38:23,806 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-30 00:38:23,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:38:23,818 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-30 00:38:23,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:38:23,820 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 00:38:23,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:38:23,827 INFO L225 Difference]: With dead ends: 22 [2020-11-30 00:38:23,828 INFO L226 Difference]: Without dead ends: 8 [2020-11-30 00:38:23,830 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 00:38:23,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-30 00:38:23,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-30 00:38:23,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 00:38:23,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2020-11-30 00:38:23,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2020-11-30 00:38:23,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:38:23,861 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2020-11-30 00:38:23,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:38:23,862 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-11-30 00:38:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:38:23,862 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:38:23,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:38:23,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:38:23,863 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:38:23,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:23,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2020-11-30 00:38:23,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:38:23,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447808748] [2020-11-30 00:38:23,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:38:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:23,917 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:23,953 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:23,975 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:38:23,975 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:38:23,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:38:24,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:38:24 BoogieIcfgContainer [2020-11-30 00:38:24,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:38:24,002 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:38:24,002 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:38:24,002 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:38:24,003 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:38:23" (3/4) ... [2020-11-30 00:38:24,006 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:38:24,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:38:24,008 INFO L168 Benchmark]: Toolchain (without parser) took 1403.51 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 58.1 MB in the beginning and 44.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:24,008 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:38:24,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.67 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 58.1 MB in the beginning and 84.4 MB in the end (delta: -26.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:24,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.12 ms. Allocated memory is still 107.0 MB. Free memory was 84.4 MB in the beginning and 83.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:38:24,011 INFO L168 Benchmark]: Boogie Preprocessor took 24.60 ms. Allocated memory is still 107.0 MB. Free memory was 83.0 MB in the beginning and 81.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:24,012 INFO L168 Benchmark]: RCFGBuilder took 354.65 ms. Allocated memory is still 107.0 MB. Free memory was 81.5 MB in the beginning and 67.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:24,012 INFO L168 Benchmark]: TraceAbstraction took 629.12 ms. Allocated memory is still 107.0 MB. Free memory was 67.7 MB in the beginning and 45.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:24,013 INFO L168 Benchmark]: Witness Printer took 4.30 ms. Allocated memory is still 107.0 MB. Free memory was 45.2 MB in the beginning and 44.6 MB in the end (delta: 586.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:38:24,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.67 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 58.1 MB in the beginning and 84.4 MB in the end (delta: -26.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.12 ms. Allocated memory is still 107.0 MB. Free memory was 84.4 MB in the beginning and 83.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.60 ms. Allocated memory is still 107.0 MB. Free memory was 83.0 MB in the beginning and 81.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 354.65 ms. Allocated memory is still 107.0 MB. Free memory was 81.5 MB in the beginning and 67.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 629.12 ms. Allocated memory is still 107.0 MB. Free memory was 67.7 MB in the beginning and 45.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.30 ms. Allocated memory is still 107.0 MB. Free memory was 45.2 MB in the beginning and 44.6 MB in the end (delta: 586.3 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: 0.5s, 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 [2020-11-30 00:38:26,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:38:26,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:38:26,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:38:26,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:38:26,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:38:26,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:38:26,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:38:26,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:38:26,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:38:26,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:38:26,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:38:26,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:38:26,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:38:26,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:38:26,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:38:26,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:38:26,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:38:26,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:38:26,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:38:26,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:38:26,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:38:26,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:38:26,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:38:26,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:38:26,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:38:26,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:38:26,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:38:26,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:38:26,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:38:26,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:38:26,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:38:26,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:38:26,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:38:26,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:38:26,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:38:26,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:38:26,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:38:26,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:38:26,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:38:26,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:38:26,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:38:26,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:38:26,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:38:26,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:38:26,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:38:26,718 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:38:26,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:38:26,719 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:38:26,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:38:26,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:38:26,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:38:26,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:38:26,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:38:26,722 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:38:26,722 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:38:26,722 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:38:26,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:38:26,723 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:38:26,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:38:26,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:38:26,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:38:26,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:38:26,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:38:26,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:38:26,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:38:26,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:38:26,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:38:26,726 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:38:26,726 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:38:26,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:38:26,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:38:26,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:38:26,727 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_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 [2020-11-30 00:38:27,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:38:27,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:38:27,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:38:27,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:38:27,186 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:38:27,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/../../sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-11-30 00:38:27,256 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/data/32854af9d/31a7243ed97549639449dc3639ff6597/FLAG086fe15fc [2020-11-30 00:38:27,761 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:38:27,762 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-11-30 00:38:27,769 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/data/32854af9d/31a7243ed97549639449dc3639ff6597/FLAG086fe15fc [2020-11-30 00:38:28,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/data/32854af9d/31a7243ed97549639449dc3639ff6597 [2020-11-30 00:38:28,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:38:28,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:38:28,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:38:28,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:38:28,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:38:28,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:38:28" (1/1) ... [2020-11-30 00:38:28,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@665a0ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:28, skipping insertion in model container [2020-11-30 00:38:28,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:38:28" (1/1) ... [2020-11-30 00:38:28,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:38:28,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:38:28,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:38:28,319 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:38:28,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:38:28,362 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:38:28,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:28 WrapperNode [2020-11-30 00:38:28,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:38:28,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:38:28,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:38:28,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:38:28,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:28" (1/1) ... [2020-11-30 00:38:28,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:28" (1/1) ... [2020-11-30 00:38:28,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:38:28,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:38:28,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:38:28,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:38:28,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:28" (1/1) ... [2020-11-30 00:38:28,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:28" (1/1) ... [2020-11-30 00:38:28,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:28" (1/1) ... [2020-11-30 00:38:28,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:28" (1/1) ... [2020-11-30 00:38:28,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:28" (1/1) ... [2020-11-30 00:38:28,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:28" (1/1) ... [2020-11-30 00:38:28,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:28" (1/1) ... [2020-11-30 00:38:28,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:38:28,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:38:28,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:38:28,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:38:28,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/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 00:38:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-30 00:38:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:38:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:38:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:38:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:38:28,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:38:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:38:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 00:38:29,117 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:38:29,117 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 00:38:29,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:38:29 BoogieIcfgContainer [2020-11-30 00:38:29,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:38:29,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:38:29,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:38:29,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:38:29,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:38:28" (1/3) ... [2020-11-30 00:38:29,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300a45a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:38:29, skipping insertion in model container [2020-11-30 00:38:29,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:28" (2/3) ... [2020-11-30 00:38:29,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300a45a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:38:29, skipping insertion in model container [2020-11-30 00:38:29,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:38:29" (3/3) ... [2020-11-30 00:38:29,127 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2020-11-30 00:38:29,139 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:38:29,146 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:38:29,157 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:38:29,197 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:38:29,197 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:38:29,197 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:38:29,197 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:38:29,197 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:38:29,197 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:38:29,197 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:38:29,198 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:38:29,211 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-30 00:38:29,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:38:29,242 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:38:29,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:38:29,261 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:38:29,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:29,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2020-11-30 00:38:29,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:38:29,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797667272] [2020-11-30 00:38:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/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 00:38:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:29,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:38:29,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:38:29,556 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 00:38:29,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:38:29,561 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 00:38:29,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797667272] [2020-11-30 00:38:29,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:38:29,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:38:29,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593554941] [2020-11-30 00:38:29,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:38:29,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:38:29,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:38:29,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:38:29,584 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-30 00:38:29,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:38:29,598 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-30 00:38:29,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:38:29,600 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 00:38:29,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:38:29,608 INFO L225 Difference]: With dead ends: 22 [2020-11-30 00:38:29,608 INFO L226 Difference]: Without dead ends: 8 [2020-11-30 00:38:29,610 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 [2020-11-30 00:38:29,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-30 00:38:29,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-30 00:38:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 00:38:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2020-11-30 00:38:29,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2020-11-30 00:38:29,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:38:29,647 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2020-11-30 00:38:29,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:38:29,648 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-11-30 00:38:29,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:38:29,648 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:38:29,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:38:29,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:38:29,873 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:38:29,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:29,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2020-11-30 00:38:29,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:38:29,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533606385] [2020-11-30 00:38:29,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/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 00:38:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:30,116 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:30,350 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:30,397 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:38:30,398 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:38:30,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:38:30,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:38:30 BoogieIcfgContainer [2020-11-30 00:38:30,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:38:30,628 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:38:30,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:38:30,628 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:38:30,629 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:38:29" (3/4) ... [2020-11-30 00:38:30,631 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:38:30,679 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_335779ab-b0c0-4106-9d4a-361ab0e7c4ba/bin/uautomizer/witness.graphml [2020-11-30 00:38:30,680 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:38:30,682 INFO L168 Benchmark]: Toolchain (without parser) took 2571.63 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 46.7 MB in the beginning and 64.3 MB in the end (delta: -17.6 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:30,683 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 65.0 MB. Free memory was 47.0 MB in the beginning and 46.9 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:38:30,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.46 ms. Allocated memory is still 65.0 MB. Free memory was 46.4 MB in the beginning and 35.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:30,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.94 ms. Allocated memory is still 65.0 MB. Free memory was 35.7 MB in the beginning and 48.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:30,685 INFO L168 Benchmark]: Boogie Preprocessor took 58.84 ms. Allocated memory is still 65.0 MB. Free memory was 48.8 MB in the beginning and 47.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:30,686 INFO L168 Benchmark]: RCFGBuilder took 646.29 ms. Allocated memory is still 65.0 MB. Free memory was 47.3 MB in the beginning and 33.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:30,686 INFO L168 Benchmark]: TraceAbstraction took 1506.50 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 33.5 MB in the beginning and 66.4 MB in the end (delta: -32.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:38:30,687 INFO L168 Benchmark]: Witness Printer took 51.81 ms. Allocated memory is still 88.1 MB. Free memory was 66.4 MB in the beginning and 64.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:30,692 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 65.0 MB. Free memory was 47.0 MB in the beginning and 46.9 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.46 ms. Allocated memory is still 65.0 MB. Free memory was 46.4 MB in the beginning and 35.7 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 48.94 ms. Allocated memory is still 65.0 MB. Free memory was 35.7 MB in the beginning and 48.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.84 ms. Allocated memory is still 65.0 MB. Free memory was 48.8 MB in the beginning and 47.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 646.29 ms. Allocated memory is still 65.0 MB. Free memory was 47.3 MB in the beginning and 33.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1506.50 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 33.5 MB in the beginning and 66.4 MB in the end (delta: -32.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 51.81 ms. Allocated memory is still 88.1 MB. Free memory was 66.4 MB in the beginning and 64.3 MB in the end (delta: 2.1 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: 1.4s, 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, 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, 0.3s 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...