./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 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_loose.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs --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_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_loose.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs --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 0.2.1-dev-5709675 [2021-10-16 01:54:32,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:54:32,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:54:32,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:54:32,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:54:32,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:54:32,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:54:32,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:54:32,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:54:32,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:54:32,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:54:32,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:54:32,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:54:32,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:54:32,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:54:32,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:54:32,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:54:32,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:54:32,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:54:32,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:54:32,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:54:32,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:54:32,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:54:32,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:54:32,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:54:32,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:54:32,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:54:32,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:54:32,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:54:32,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:54:32,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:54:32,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:54:32,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:54:32,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:54:32,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:54:32,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:54:32,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:54:32,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:54:32,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:54:32,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:54:32,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:54:32,191 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 01:54:32,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:54:32,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:54:32,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:54:32,246 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:54:32,247 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:54:32,247 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:54:32,247 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 01:54:32,247 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:54:32,248 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:54:32,248 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 01:54:32,249 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 01:54:32,249 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:54:32,250 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 01:54:32,250 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 01:54:32,250 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 01:54:32,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:54:32,251 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:54:32,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 01:54:32,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:54:32,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:54:32,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:54:32,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:54:32,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:54:32,253 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:54:32,253 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:54:32,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:54:32,253 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:54:32,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:54:32,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:54:32,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:54:32,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:32,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:54:32,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:54:32,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:54:32,257 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 01:54:32,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 01:54:32,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:54:32,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:54:32,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:54:32,258 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_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 [2021-10-16 01:54:32,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:54:32,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:54:32,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:54:32,581 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:54:32,582 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:54:32,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-16 01:54:32,676 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/data/e51da2e0c/a23e0f48a1b04e12b33d1c8c04a070bc/FLAG542471a4a [2021-10-16 01:54:33,170 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:54:33,174 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-16 01:54:33,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/data/e51da2e0c/a23e0f48a1b04e12b33d1c8c04a070bc/FLAG542471a4a [2021-10-16 01:54:33,530 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/data/e51da2e0c/a23e0f48a1b04e12b33d1c8c04a070bc [2021-10-16 01:54:33,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:54:33,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:54:33,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:33,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:54:33,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:54:33,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f7945ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33, skipping insertion in model container [2021-10-16 01:54:33,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:54:33,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:54:33,754 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-16 01:54:33,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:33,780 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:54:33,793 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-16 01:54:33,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:33,817 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:54:33,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33 WrapperNode [2021-10-16 01:54:33,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:33,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:33,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:54:33,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:54:33,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:33,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:54:33,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:54:33,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:54:33,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:54:33,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:54:33,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:54:33,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:54:33,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:33,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:54:33,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:54:33,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:54:33,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 01:54:33,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:54:33,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-16 01:54:33,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 01:54:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:54:33,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:54:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 01:54:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 01:54:34,340 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:54:34,341 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-16 01:54:34,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:34 BoogieIcfgContainer [2021-10-16 01:54:34,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:54:34,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:54:34,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:54:34,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:54:34,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:54:33" (1/3) ... [2021-10-16 01:54:34,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c7eec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:34, skipping insertion in model container [2021-10-16 01:54:34,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (2/3) ... [2021-10-16 01:54:34,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c7eec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:34, skipping insertion in model container [2021-10-16 01:54:34,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:34" (3/3) ... [2021-10-16 01:54:34,353 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2021-10-16 01:54:34,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:54:34,359 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 01:54:34,422 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:54:34,429 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 01:54:34,429 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 01:54:34,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:54:34,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 01:54:34,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:34,447 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 01:54:34,448 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:54:34,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:34,452 INFO L82 PathProgramCache]: Analyzing trace with hash 60993, now seen corresponding path program 1 times [2021-10-16 01:54:34,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:34,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335113925] [2021-10-16 01:54:34,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:34,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:54:34,592 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 01:54:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:54:34,653 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 01:54:34,655 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 01:54:34,656 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:54:34,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 01:54:34,665 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 01:54:34,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:54:34 BoogieIcfgContainer [2021-10-16 01:54:34,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 01:54:34,685 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 01:54:34,685 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 01:54:34,685 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 01:54:34,686 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:34" (3/4) ... [2021-10-16 01:54:34,689 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 01:54:34,689 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 01:54:34,692 INFO L168 Benchmark]: Toolchain (without parser) took 1156.04 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 65.4 MB in the beginning and 65.2 MB in the end (delta: 173.1 kB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:34,692 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:54:34,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.09 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 65.1 MB in the beginning and 102.0 MB in the end (delta: -36.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:34,694 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.46 ms. Allocated memory is still 127.9 MB. Free memory was 102.0 MB in the beginning and 100.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:54:34,695 INFO L168 Benchmark]: Boogie Preprocessor took 24.67 ms. Allocated memory is still 127.9 MB. Free memory was 100.6 MB in the beginning and 99.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:34,695 INFO L168 Benchmark]: RCFGBuilder took 460.73 ms. Allocated memory is still 127.9 MB. Free memory was 99.4 MB in the beginning and 82.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:34,696 INFO L168 Benchmark]: TraceAbstraction took 338.69 ms. Allocated memory is still 127.9 MB. Free memory was 81.8 MB in the beginning and 65.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:34,697 INFO L168 Benchmark]: Witness Printer took 4.57 ms. Allocated memory is still 127.9 MB. Free memory was 65.8 MB in the beginning and 65.2 MB in the end (delta: 589.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:54:34,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.09 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 65.1 MB in the beginning and 102.0 MB in the end (delta: -36.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.46 ms. Allocated memory is still 127.9 MB. Free memory was 102.0 MB in the beginning and 100.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.67 ms. Allocated memory is still 127.9 MB. Free memory was 100.6 MB in the beginning and 99.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 460.73 ms. Allocated memory is still 127.9 MB. Free memory was 99.4 MB in the beginning and 82.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 338.69 ms. Allocated memory is still 127.9 MB. Free memory was 81.8 MB in the beginning and 65.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.57 ms. Allocated memory is still 127.9 MB. Free memory was 65.8 MB in the beginning and 65.2 MB in the end (delta: 589.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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. OverallTime: 243.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 7.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.2ms SsaConstructionTime, 70.5ms SatisfiabilityAnalysisTime, 0.0ms 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 [2021-10-16 01:54:34,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:54:37,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:54:37,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:54:37,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:54:37,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:54:37,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:54:37,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:54:37,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:54:37,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:54:37,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:54:37,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:54:37,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:54:37,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:54:37,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:54:37,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:54:37,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:54:37,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:54:37,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:54:37,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:54:37,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:54:37,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:54:37,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:54:37,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:54:37,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:54:37,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:54:37,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:54:37,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:54:37,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:54:37,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:54:37,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:54:37,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:54:37,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:54:37,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:54:37,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:54:37,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:54:37,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:54:37,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:54:37,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:54:37,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:54:37,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:54:37,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:54:37,324 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 01:54:37,374 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:54:37,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:54:37,376 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:54:37,377 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:54:37,377 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:54:37,377 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:54:37,377 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:54:37,377 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:54:37,378 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:54:37,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:54:37,380 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:54:37,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:54:37,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:54:37,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:54:37,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:54:37,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:54:37,381 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:54:37,382 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 01:54:37,382 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 01:54:37,382 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:54:37,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:54:37,382 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:54:37,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:54:37,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:54:37,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 01:54:37,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:54:37,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:37,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:54:37,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:54:37,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:54:37,384 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 01:54:37,384 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 01:54:37,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:54:37,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:54:37,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:54:37,385 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_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 [2021-10-16 01:54:37,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:54:37,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:54:37,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:54:37,790 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:54:37,791 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:54:37,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-16 01:54:37,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/data/008d86501/f141496a96824699b93904b974a79c80/FLAG1faad06c1 [2021-10-16 01:54:38,469 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:54:38,470 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-16 01:54:38,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/data/008d86501/f141496a96824699b93904b974a79c80/FLAG1faad06c1 [2021-10-16 01:54:38,810 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/data/008d86501/f141496a96824699b93904b974a79c80 [2021-10-16 01:54:38,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:54:38,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:54:38,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:38,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:54:38,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:54:38,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:38" (1/1) ... [2021-10-16 01:54:38,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@517ff811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:38, skipping insertion in model container [2021-10-16 01:54:38,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:38" (1/1) ... [2021-10-16 01:54:38,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:54:38,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:54:38,992 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-16 01:54:39,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:39,019 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:54:39,032 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-16 01:54:39,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:39,076 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:54:39,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39 WrapperNode [2021-10-16 01:54:39,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:39,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:39,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:54:39,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:54:39,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:39,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:54:39,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:54:39,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:54:39,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:54:39,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:54:39,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:54:39,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:54:39,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:39,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:54:39,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:54:39,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:54:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-16 01:54:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 01:54:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:54:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 01:54:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:54:39,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:54:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 01:54:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 01:54:39,882 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:54:39,883 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-16 01:54:39,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:39 BoogieIcfgContainer [2021-10-16 01:54:39,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:54:39,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:54:39,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:54:39,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:54:39,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:54:38" (1/3) ... [2021-10-16 01:54:39,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513c8af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:39, skipping insertion in model container [2021-10-16 01:54:39,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (2/3) ... [2021-10-16 01:54:39,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513c8af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:39, skipping insertion in model container [2021-10-16 01:54:39,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:39" (3/3) ... [2021-10-16 01:54:39,895 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2021-10-16 01:54:39,901 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:54:39,901 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 01:54:39,964 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:54:39,973 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 01:54:39,974 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 01:54:39,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:54:39,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 01:54:40,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:40,000 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:40,001 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:54:40,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:40,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2021-10-16 01:54:40,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:40,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962482937] [2021-10-16 01:54:40,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:40,032 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:40,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:40,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:40,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 01:54:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:40,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 01:54:40,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:40,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:40,388 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:40,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962482937] [2021-10-16 01:54:40,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962482937] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:40,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:40,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 01:54:40,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110508801] [2021-10-16 01:54:40,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 01:54:40,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:40,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 01:54:40,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:54:40,415 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:54:40,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:40,428 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-10-16 01:54:40,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 01:54:40,430 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 01:54:40,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:40,438 INFO L225 Difference]: With dead ends: 21 [2021-10-16 01:54:40,438 INFO L226 Difference]: Without dead ends: 8 [2021-10-16 01:54:40,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:54:40,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-16 01:54:40,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-16 01:54:40,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:54:40,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-10-16 01:54:40,470 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-10-16 01:54:40,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:40,471 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-10-16 01:54:40,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:54:40,472 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-10-16 01:54:40,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 01:54:40,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:40,473 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:40,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:40,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:40,688 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:54:40,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:40,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2021-10-16 01:54:40,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:40,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218502652] [2021-10-16 01:54:40,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:40,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:40,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:40,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:40,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 01:54:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:54:40,919 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 01:54:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:54:41,115 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 01:54:41,115 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 01:54:41,118 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:54:41,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-16 01:54:41,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:41,329 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 01:54:41,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:54:41 BoogieIcfgContainer [2021-10-16 01:54:41,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 01:54:41,368 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 01:54:41,368 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 01:54:41,369 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 01:54:41,369 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:39" (3/4) ... [2021-10-16 01:54:41,371 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 01:54:41,441 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 01:54:41,443 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 01:54:41,445 INFO L168 Benchmark]: Toolchain (without parser) took 2630.50 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 43.2 MB in the beginning and 73.3 MB in the end (delta: -30.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:41,446 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 62.9 MB. Free memory is still 43.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:54:41,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.38 ms. Allocated memory is still 62.9 MB. Free memory was 43.1 MB in the beginning and 46.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:41,447 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.62 ms. Allocated memory is still 62.9 MB. Free memory was 46.5 MB in the beginning and 45.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:54:41,448 INFO L168 Benchmark]: Boogie Preprocessor took 53.83 ms. Allocated memory is still 62.9 MB. Free memory was 45.0 MB in the beginning and 43.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:41,453 INFO L168 Benchmark]: RCFGBuilder took 713.29 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 32.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:41,454 INFO L168 Benchmark]: TraceAbstraction took 1477.41 ms. Allocated memory is still 62.9 MB. Free memory was 32.3 MB in the beginning and 27.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:41,454 INFO L168 Benchmark]: Witness Printer took 75.67 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 27.0 MB in the beginning and 73.3 MB in the end (delta: -46.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:41,457 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 62.9 MB. Free memory is still 43.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.38 ms. Allocated memory is still 62.9 MB. Free memory was 43.1 MB in the beginning and 46.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.62 ms. Allocated memory is still 62.9 MB. Free memory was 46.5 MB in the beginning and 45.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.83 ms. Allocated memory is still 62.9 MB. Free memory was 45.0 MB in the beginning and 43.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 713.29 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 32.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1477.41 ms. Allocated memory is still 62.9 MB. Free memory was 32.3 MB in the beginning and 27.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * Witness Printer took 75.67 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 27.0 MB in the beginning and 73.3 MB in the end (delta: -46.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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. OverallTime: 1363.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 15.4ms, AutomataDifference: 43.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 50.0ms SsaConstructionTime, 300.3ms SatisfiabilityAnalysisTime, 99.2ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 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! [2021-10-16 01:54:41,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d37b374-ee71-4f0d-ab27-a19909bd6b9c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...