./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_loose.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI --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 Taipan --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_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_loose.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI --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 Taipan --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 0.2.0-7b2dab5 [2021-10-11 02:23:00,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:00,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:00,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:00,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:00,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:00,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:00,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:00,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:00,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:00,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:00,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:00,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:00,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:00,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:00,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:00,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:00,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:00,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:00,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:00,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:00,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:00,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:00,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:00,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:00,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:00,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:00,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:00,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:00,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:00,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:00,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:00,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:00,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:00,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:00,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:00,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:00,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:00,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:00,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:00,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:00,198 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:00,246 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:00,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:00,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:00,249 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:00,249 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:00,250 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:00,250 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:00,250 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:00,257 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:00,257 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:00,258 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:00,259 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:00,259 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:00,259 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:00,260 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:00,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:00,261 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:00,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:00,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:00,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:00,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:00,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:00,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:00,263 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:00,263 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:00,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:00,263 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:00,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:00,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:00,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:00,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:00,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:00,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:00,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:00,268 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:00,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:00,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:00,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:00,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:00,269 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 [2021-10-11 02:23:00,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:00,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:00,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:00,634 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:00,635 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:00,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-11 02:23:00,714 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/data/b04780423/6dc4a9ffac124c4e8561a2308f90259d/FLAG2f0455caa [2021-10-11 02:23:01,336 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:01,336 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-11 02:23:01,351 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/data/b04780423/6dc4a9ffac124c4e8561a2308f90259d/FLAG2f0455caa [2021-10-11 02:23:01,696 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/data/b04780423/6dc4a9ffac124c4e8561a2308f90259d [2021-10-11 02:23:01,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:01,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:01,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:01,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:01,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:01,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:01" (1/1) ... [2021-10-11 02:23:01,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6900c17f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:01, skipping insertion in model container [2021-10-11 02:23:01,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:01" (1/1) ... [2021-10-11 02:23:01,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:01,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:01,924 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-11 02:23:01,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:01,954 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:01,968 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-11 02:23:01,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:01,993 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:01,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:01 WrapperNode [2021-10-11 02:23:01,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:01,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:01,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:01,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:02,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:01" (1/1) ... [2021-10-11 02:23:02,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:01" (1/1) ... [2021-10-11 02:23:02,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:02,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:02,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:02,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:02,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:01" (1/1) ... [2021-10-11 02:23:02,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:01" (1/1) ... [2021-10-11 02:23:02,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:01" (1/1) ... [2021-10-11 02:23:02,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:01" (1/1) ... [2021-10-11 02:23:02,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:01" (1/1) ... [2021-10-11 02:23:02,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:01" (1/1) ... [2021-10-11 02:23:02,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:01" (1/1) ... [2021-10-11 02:23:02,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:02,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:02,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:02,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:02,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:01" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:23:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-11 02:23:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:23:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:02,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:23:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:23:02,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:02,798 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:23:02,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:02 BoogieIcfgContainer [2021-10-11 02:23:02,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:02,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:02,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:02,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:02,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:01" (1/3) ... [2021-10-11 02:23:02,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfb7edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:02, skipping insertion in model container [2021-10-11 02:23:02,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:01" (2/3) ... [2021-10-11 02:23:02,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfb7edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:02, skipping insertion in model container [2021-10-11 02:23:02,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:02" (3/3) ... [2021-10-11 02:23:02,831 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2021-10-11 02:23:02,846 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:02,850 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:02,866 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:23:02,918 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:02,918 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:02,918 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:02,918 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:02,918 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:02,919 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:02,919 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:02,919 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:02,934 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2021-10-11 02:23:02,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:23:02,940 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:02,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:23:02,941 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:02,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:02,949 INFO L82 PathProgramCache]: Analyzing trace with hash 60993, now seen corresponding path program 1 times [2021-10-11 02:23:02,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:02,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448911205] [2021-10-11 02:23:02,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:23:03,175 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:23:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:23:03,253 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:23:03,290 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:23:03,291 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:23:03,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:03,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:03 BoogieIcfgContainer [2021-10-11 02:23:03,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:03,325 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:03,325 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:03,326 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:03,327 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:02" (3/4) ... [2021-10-11 02:23:03,340 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:23:03,343 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:03,348 INFO L168 Benchmark]: Toolchain (without parser) took 1641.59 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 70.9 MB in the beginning and 87.7 MB in the end (delta: -16.8 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:03,350 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 102.8 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:03,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.40 ms. Allocated memory is still 102.8 MB. Free memory was 70.9 MB in the beginning and 77.3 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:03,354 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.79 ms. Allocated memory is still 102.8 MB. Free memory was 77.3 MB in the beginning and 75.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:03,356 INFO L168 Benchmark]: Boogie Preprocessor took 26.46 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 74.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:03,356 INFO L168 Benchmark]: RCFGBuilder took 738.84 ms. Allocated memory is still 102.8 MB. Free memory was 74.5 MB in the beginning and 50.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:03,358 INFO L168 Benchmark]: TraceAbstraction took 519.25 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 50.1 MB in the beginning and 87.9 MB in the end (delta: -37.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:03,359 INFO L168 Benchmark]: Witness Printer took 19.00 ms. Allocated memory is still 123.7 MB. Free memory was 87.9 MB in the beginning and 87.7 MB in the end (delta: 208.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:03,368 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 102.8 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.40 ms. Allocated memory is still 102.8 MB. Free memory was 70.9 MB in the beginning and 77.3 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.79 ms. Allocated memory is still 102.8 MB. Free memory was 77.3 MB in the beginning and 75.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.46 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 74.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 738.84 ms. Allocated memory is still 102.8 MB. Free memory was 74.5 MB in the beginning and 50.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 519.25 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 50.1 MB in the beginning and 87.9 MB in the end (delta: -37.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 19.00 ms. Allocated memory is still 123.7 MB. Free memory was 87.9 MB in the beginning and 87.7 MB in the end (delta: 208.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 39, 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) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 0.2.0-7b2dab5 [2021-10-11 02:23:06,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:06,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:06,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:06,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:06,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:06,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:06,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:06,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:06,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:06,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:06,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:06,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:06,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:06,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:06,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:06,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:06,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:06,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:06,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:06,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:06,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:06,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:06,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:06,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:06,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:06,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:06,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:06,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:06,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:06,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:06,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:06,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:06,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:06,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:06,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:06,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:06,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:06,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:06,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:06,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:06,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:23:06,239 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:06,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:06,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:06,243 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:06,244 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:06,244 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:06,244 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:06,244 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:06,245 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:06,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:06,247 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:06,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:06,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:06,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:06,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:06,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:06,249 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:06,249 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:23:06,250 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:23:06,250 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:06,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:06,250 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:06,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:06,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:06,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:23:06,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:06,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:06,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:06,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:06,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:06,253 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:23:06,253 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:23:06,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:06,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:06,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:06,254 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 [2021-10-11 02:23:06,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:06,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:06,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:06,701 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:06,702 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:06,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-11 02:23:06,795 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/data/1e7191d1c/af3471c78bfd4476a926792ed8b99ee1/FLAGa559bdb3a [2021-10-11 02:23:07,329 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:07,330 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-11 02:23:07,340 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/data/1e7191d1c/af3471c78bfd4476a926792ed8b99ee1/FLAGa559bdb3a [2021-10-11 02:23:07,689 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/data/1e7191d1c/af3471c78bfd4476a926792ed8b99ee1 [2021-10-11 02:23:07,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:07,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:07,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:07,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:07,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:07,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:07" (1/1) ... [2021-10-11 02:23:07,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4866c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:07, skipping insertion in model container [2021-10-11 02:23:07,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:07" (1/1) ... [2021-10-11 02:23:07,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:07,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:07,899 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-11 02:23:07,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:07,936 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:07,953 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-11 02:23:07,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:08,064 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:08,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:08 WrapperNode [2021-10-11 02:23:08,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:08,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:08,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:08,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:08,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:08" (1/1) ... [2021-10-11 02:23:08,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:08" (1/1) ... [2021-10-11 02:23:08,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:08,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:08,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:08,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:08,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:08" (1/1) ... [2021-10-11 02:23:08,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:08" (1/1) ... [2021-10-11 02:23:08,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:08" (1/1) ... [2021-10-11 02:23:08,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:08" (1/1) ... [2021-10-11 02:23:08,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:08" (1/1) ... [2021-10-11 02:23:08,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:08" (1/1) ... [2021-10-11 02:23:08,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:08" (1/1) ... [2021-10-11 02:23:08,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:08,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:08,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:08,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:08,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:08" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:08,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-11 02:23:08,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:23:08,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:08,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:23:08,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:08,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:08,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:23:08,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-11 02:23:09,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:09,024 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:23:09,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:09 BoogieIcfgContainer [2021-10-11 02:23:09,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:09,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:09,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:09,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:09,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:07" (1/3) ... [2021-10-11 02:23:09,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16922b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:09, skipping insertion in model container [2021-10-11 02:23:09,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:08" (2/3) ... [2021-10-11 02:23:09,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16922b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:09, skipping insertion in model container [2021-10-11 02:23:09,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:09" (3/3) ... [2021-10-11 02:23:09,050 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2021-10-11 02:23:09,081 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:09,094 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:09,110 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:23:09,163 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:09,163 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:09,164 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:09,164 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:09,164 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:09,164 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:09,164 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:09,164 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:09,177 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-10-11 02:23:09,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:23:09,182 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:09,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:09,183 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:09,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:09,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2021-10-11 02:23:09,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:09,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801501439] [2021-10-11 02:23:09,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:09,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:23:09,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:09,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:09,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:09,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801501439] [2021-10-11 02:23:09,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:09,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:09,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092181128] [2021-10-11 02:23:09,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:23:09,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:09,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:23:09,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:23:09,482 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2021-10-11 02:23:09,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:09,494 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-10-11 02:23:09,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:23:09,495 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-10-11 02:23:09,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:09,504 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:23:09,504 INFO L226 Difference]: Without dead ends: 8 [2021-10-11 02:23:09,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:23:09,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-11 02:23:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 02:23:09,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 02:23:09,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-10-11 02:23:09,538 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-10-11 02:23:09,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:09,539 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-10-11 02:23:09,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:23:09,539 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-10-11 02:23:09,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:23:09,539 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:09,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:09,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:23:09,747 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:09,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:09,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2021-10-11 02:23:09,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:09,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582274346] [2021-10-11 02:23:09,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:23:09,983 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:23:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:23:10,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:23:10,172 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:23:10,173 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:23:10,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:23:10,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:10 BoogieIcfgContainer [2021-10-11 02:23:10,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:10,398 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:10,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:10,398 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:10,399 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:09" (3/4) ... [2021-10-11 02:23:10,401 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:23:10,439 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4875e4-8d8c-4de1-8e90-b50a56b21ae1/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:23:10,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:10,443 INFO L168 Benchmark]: Toolchain (without parser) took 2749.25 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 35.8 MB in the beginning and 45.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:10,444 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 56.6 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:10,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.87 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 35.6 MB in the beginning and 57.2 MB in the end (delta: -21.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:10,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.65 ms. Allocated memory is still 73.4 MB. Free memory was 57.0 MB in the beginning and 55.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:10,446 INFO L168 Benchmark]: Boogie Preprocessor took 49.69 ms. Allocated memory is still 73.4 MB. Free memory was 55.4 MB in the beginning and 54.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:10,447 INFO L168 Benchmark]: RCFGBuilder took 839.11 ms. Allocated memory is still 73.4 MB. Free memory was 54.1 MB in the beginning and 40.3 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:10,448 INFO L168 Benchmark]: TraceAbstraction took 1370.65 ms. Allocated memory is still 73.4 MB. Free memory was 39.9 MB in the beginning and 47.1 MB in the end (delta: -7.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:10,448 INFO L168 Benchmark]: Witness Printer took 43.25 ms. Allocated memory is still 73.4 MB. Free memory was 47.1 MB in the beginning and 45.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:10,452 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 56.6 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.87 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 35.6 MB in the beginning and 57.2 MB in the end (delta: -21.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.65 ms. Allocated memory is still 73.4 MB. Free memory was 57.0 MB in the beginning and 55.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.69 ms. Allocated memory is still 73.4 MB. Free memory was 55.4 MB in the beginning and 54.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 839.11 ms. Allocated memory is still 73.4 MB. Free memory was 54.1 MB in the beginning and 40.3 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1370.65 ms. Allocated memory is still 73.4 MB. Free memory was 39.9 MB in the beginning and 47.1 MB in the end (delta: -7.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 43.25 ms. Allocated memory is still 73.4 MB. Free memory was 47.1 MB in the beginning and 45.4 MB in the end (delta: 1.7 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: 13]: a call to reach_error is reachable a call to reach_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) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 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, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 1 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 proved your program to be incorrect! Received shutdown request...