./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_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_loose.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 ............................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/cast_union_loose.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 ....................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:28:19,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:28:19,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:28:19,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:28:19,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:28:19,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:28:19,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:28:19,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:28:19,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:28:19,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:28:19,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:28:19,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:28:19,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:28:19,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:28:19,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:28:19,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:28:19,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:28:19,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:28:19,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:28:19,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:28:19,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:28:19,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:28:19,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:28:19,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:28:19,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:28:19,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:28:19,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:28:19,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:28:19,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:28:19,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:28:19,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:28:19,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:28:19,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:28:19,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:28:19,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:28:19,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:28:19,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:28:19,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:28:19,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:28:19,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:28:19,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:28:19,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:28:19,186 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:28:19,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:28:19,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:28:19,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:28:19,188 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:28:19,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:28:19,189 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:28:19,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:28:19,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:28:19,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:28:19,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:28:19,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:28:19,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:28:19,196 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:28:19,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:28:19,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:28:19,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:28:19,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:28:19,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:28:19,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:28:19,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:28:19,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:28:19,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:28:19,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:28:19,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:28:19,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:28:19,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:28:19,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:28:19,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 [2021-10-11 00:28:19,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:28:19,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:28:19,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:28:19,569 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:28:19,570 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:28:19,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-11 00:28:19,653 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/data/e51355792/2ca4776b9db44c5dbb3ecb2f393a6d38/FLAG506232be4 [2021-10-11 00:28:20,225 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:28:20,226 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-11 00:28:20,233 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/data/e51355792/2ca4776b9db44c5dbb3ecb2f393a6d38/FLAG506232be4 [2021-10-11 00:28:20,583 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/data/e51355792/2ca4776b9db44c5dbb3ecb2f393a6d38 [2021-10-11 00:28:20,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:28:20,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:28:20,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:28:20,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:28:20,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:28:20,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:28:20" (1/1) ... [2021-10-11 00:28:20,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be56399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:20, skipping insertion in model container [2021-10-11 00:28:20,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:28:20" (1/1) ... [2021-10-11 00:28:20,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:28:20,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:28:20,829 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_d551eb69-9066-4468-8c41-6d67109f42ad/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-11 00:28:20,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:28:20,864 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:28:20,880 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_d551eb69-9066-4468-8c41-6d67109f42ad/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-11 00:28:20,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:28:20,912 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:28:20,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:20 WrapperNode [2021-10-11 00:28:20,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:28:20,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:28:20,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:28:20,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:28:20,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:20" (1/1) ... [2021-10-11 00:28:20,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:20" (1/1) ... [2021-10-11 00:28:20,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:28:20,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:28:20,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:28:20,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:28:20,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:20" (1/1) ... [2021-10-11 00:28:20,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:20" (1/1) ... [2021-10-11 00:28:20,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:20" (1/1) ... [2021-10-11 00:28:21,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:20" (1/1) ... [2021-10-11 00:28:21,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:20" (1/1) ... [2021-10-11 00:28:21,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:20" (1/1) ... [2021-10-11 00:28:21,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:20" (1/1) ... [2021-10-11 00:28:21,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:28:21,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:28:21,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:28:21,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:28:21,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:20" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/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 00:28:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:28:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:28:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-11 00:28:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:28:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:28:21,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:28:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:28:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:28:21,431 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:28:21,432 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 00:28:21,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:21 BoogieIcfgContainer [2021-10-11 00:28:21,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:28:21,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:28:21,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:28:21,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:28:21,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:28:20" (1/3) ... [2021-10-11 00:28:21,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1a26f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:28:21, skipping insertion in model container [2021-10-11 00:28:21,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:20" (2/3) ... [2021-10-11 00:28:21,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1a26f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:28:21, skipping insertion in model container [2021-10-11 00:28:21,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:21" (3/3) ... [2021-10-11 00:28:21,445 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2021-10-11 00:28:21,463 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:28:21,467 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:28:21,496 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:28:21,553 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:28:21,553 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:28:21,554 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:28:21,554 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:28:21,554 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:28:21,554 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:28:21,554 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:28:21,554 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:28:21,584 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-10-11 00:28:21,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:28:21,590 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:21,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:21,591 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:28:21,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:21,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2021-10-11 00:28:21,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:21,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790404390] [2021-10-11 00:28:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:21,813 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 00:28:21,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790404390] [2021-10-11 00:28:21,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:21,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:28:21,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070853635] [2021-10-11 00:28:21,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:28:21,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:21,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:28:21,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:28:21,839 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2021-10-11 00:28:21,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:21,855 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-10-11 00:28:21,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:28:21,857 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-10-11 00:28:21,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:21,867 INFO L225 Difference]: With dead ends: 21 [2021-10-11 00:28:21,867 INFO L226 Difference]: Without dead ends: 8 [2021-10-11 00:28:21,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:28:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-11 00:28:21,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 00:28:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 00:28:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-10-11 00:28:21,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-10-11 00:28:21,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:21,918 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-10-11 00:28:21,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:28:21,919 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-10-11 00:28:21,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:28:21,919 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:21,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:21,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:28:21,920 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:28:21,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:21,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2021-10-11 00:28:21,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:21,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567012325] [2021-10-11 00:28:21,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:21,994 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:22,040 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:22,068 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:22,068 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:28:22,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:28:22,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:28:22 BoogieIcfgContainer [2021-10-11 00:28:22,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:28:22,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:28:22,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:28:22,100 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:28:22,100 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:21" (3/4) ... [2021-10-11 00:28:22,105 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 00:28:22,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:28:22,108 INFO L168 Benchmark]: Toolchain (without parser) took 1516.34 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 69.7 MB in the beginning and 57.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:22,109 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:28:22,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.83 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 69.4 MB in the beginning and 99.0 MB in the end (delta: -29.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:22,111 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.02 ms. Allocated memory is still 123.7 MB. Free memory was 99.0 MB in the beginning and 97.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:22,112 INFO L168 Benchmark]: Boogie Preprocessor took 63.41 ms. Allocated memory is still 123.7 MB. Free memory was 97.7 MB in the beginning and 96.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:22,113 INFO L168 Benchmark]: RCFGBuilder took 397.38 ms. Allocated memory is still 123.7 MB. Free memory was 96.3 MB in the beginning and 82.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:22,114 INFO L168 Benchmark]: TraceAbstraction took 662.13 ms. Allocated memory is still 123.7 MB. Free memory was 81.6 MB in the beginning and 58.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:22,115 INFO L168 Benchmark]: Witness Printer took 5.89 ms. Allocated memory is still 123.7 MB. Free memory was 58.5 MB in the beginning and 57.8 MB in the end (delta: 671.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:28:22,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.83 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 69.4 MB in the beginning and 99.0 MB in the end (delta: -29.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.02 ms. Allocated memory is still 123.7 MB. Free memory was 99.0 MB in the beginning and 97.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.41 ms. Allocated memory is still 123.7 MB. Free memory was 97.7 MB in the beginning and 96.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 397.38 ms. Allocated memory is still 123.7 MB. Free memory was 96.3 MB in the beginning and 82.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 662.13 ms. Allocated memory is still 123.7 MB. Free memory was 81.6 MB in the beginning and 58.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.89 ms. Allocated memory is still 123.7 MB. Free memory was 58.5 MB in the beginning and 57.8 MB in the end (delta: 671.7 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 someBinaryDOUBLEComparisonOperation at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 27, overapproximation of bitwiseXor at line 26. Possible FailurePath: [L32] int a; [L33] double r; [L35] a = __VERIFIER_nondet_int() [L11] COND FALSE !(!cond) [L22] union u x, y; [L23] x.i[0] = 0x43300000 [L24] EXPR x.i[0] [L24] y.i[0] = x.i[0] [L25] x.i[1] = 0x80000000 [L26] EXPR x.i[1] [L26] y.i[1] = i ^ x.i[1] [L27] EXPR y.d [L27] EXPR x.d [L27] return y.d - x.d; [L27] return y.d - x.d; [L27] return y.d - x.d; [L38] r = cast(a) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:28:25,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:28:25,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:28:25,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-11 00:28:25,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:28:25,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:28:25,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:28:25,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:28:25,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:28:25,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:28:25,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:28:25,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:28:25,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:28:25,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:28:25,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:28:25,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:28:25,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-11 00:28:25,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:28:25,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:28:25,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:28:25,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:28:25,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:28:25,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:28:25,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:28:25,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:28:25,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:28:25,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:28:25,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:28:25,375 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-11 00:28:25,428 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:28:25,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:28:25,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:28:25,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:28:25,432 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:28:25,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:28:25,433 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:28:25,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:28:25,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:28:25,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:28:25,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:28:25,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:28:25,435 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 00:28:25,435 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 00:28:25,435 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:28:25,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:28:25,436 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:28:25,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:28:25,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:28:25,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:28:25,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:28:25,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:28:25,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:28:25,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:28:25,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:28:25,438 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-11 00:28:25,438 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 00:28:25,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:28:25,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:28:25,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 00:28:25,440 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_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 [2021-10-11 00:28:25,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:28:25,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:28:25,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:28:25,940 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:28:25,941 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:28:25,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-11 00:28:26,028 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/data/19c06762e/b45e24e1810a4e7bb81aa154d36d36b2/FLAG3d3c7a8ff [2021-10-11 00:28:26,679 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:28:26,680 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/sv-benchmarks/c/float-benchs/cast_union_loose.c [2021-10-11 00:28:26,688 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/data/19c06762e/b45e24e1810a4e7bb81aa154d36d36b2/FLAG3d3c7a8ff [2021-10-11 00:28:27,011 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/data/19c06762e/b45e24e1810a4e7bb81aa154d36d36b2 [2021-10-11 00:28:27,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:28:27,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:28:27,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:28:27,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:28:27,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:28:27,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:28:27" (1/1) ... [2021-10-11 00:28:27,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323addb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:27, skipping insertion in model container [2021-10-11 00:28:27,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:28:27" (1/1) ... [2021-10-11 00:28:27,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:28:27,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:28:27,295 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_d551eb69-9066-4468-8c41-6d67109f42ad/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-11 00:28:27,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:28:27,334 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:28:27,350 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_d551eb69-9066-4468-8c41-6d67109f42ad/sv-benchmarks/c/float-benchs/cast_union_loose.c[582,595] [2021-10-11 00:28:27,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:28:27,388 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:28:27,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:27 WrapperNode [2021-10-11 00:28:27,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:28:27,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:28:27,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:28:27,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:28:27,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:27" (1/1) ... [2021-10-11 00:28:27,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:27" (1/1) ... [2021-10-11 00:28:27,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:28:27,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:28:27,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:28:27,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:28:27,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:27" (1/1) ... [2021-10-11 00:28:27,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:27" (1/1) ... [2021-10-11 00:28:27,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:27" (1/1) ... [2021-10-11 00:28:27,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:27" (1/1) ... [2021-10-11 00:28:27,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:27" (1/1) ... [2021-10-11 00:28:27,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:27" (1/1) ... [2021-10-11 00:28:27,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:27" (1/1) ... [2021-10-11 00:28:27,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:28:27,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:28:27,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:28:27,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:28:27,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:27" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/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 00:28:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-11 00:28:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 00:28:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:28:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 00:28:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:28:27,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:28:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:28:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-11 00:28:28,690 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:28:28,691 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 00:28:28,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:28 BoogieIcfgContainer [2021-10-11 00:28:28,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:28:28,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:28:28,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:28:28,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:28:28,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:28:27" (1/3) ... [2021-10-11 00:28:28,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334119be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:28:28, skipping insertion in model container [2021-10-11 00:28:28,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:27" (2/3) ... [2021-10-11 00:28:28,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334119be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:28:28, skipping insertion in model container [2021-10-11 00:28:28,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:28" (3/3) ... [2021-10-11 00:28:28,703 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2021-10-11 00:28:28,736 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:28:28,745 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:28:28,778 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:28:28,823 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:28:28,823 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:28:28,823 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:28:28,823 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:28:28,824 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:28:28,824 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:28:28,824 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:28:28,824 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:28:28,839 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-10-11 00:28:28,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:28:28,845 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:28,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:28,846 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:28:28,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:28,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2021-10-11 00:28:28,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:28:28,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135784688] [2021-10-11 00:28:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/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 00:28:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:29,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 00:28:29,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:29,234 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 00:28:29,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:28:29,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135784688] [2021-10-11 00:28:29,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:29,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:28:29,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490719089] [2021-10-11 00:28:29,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:28:29,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:28:29,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:28:29,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:28:29,268 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2021-10-11 00:28:29,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:29,295 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-10-11 00:28:29,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:28:29,297 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-10-11 00:28:29,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:29,315 INFO L225 Difference]: With dead ends: 21 [2021-10-11 00:28:29,316 INFO L226 Difference]: Without dead ends: 8 [2021-10-11 00:28:29,322 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 00:28:29,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-11 00:28:29,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 00:28:29,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 00:28:29,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-10-11 00:28:29,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-10-11 00:28:29,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:29,365 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-10-11 00:28:29,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:28:29,365 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-10-11 00:28:29,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:28:29,365 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:29,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:29,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 00:28:29,590 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:28:29,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:29,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2021-10-11 00:28:29,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:28:29,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49114999] [2021-10-11 00:28:29,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/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 00:28:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:29,842 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:30,018 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:30,062 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-11 00:28:30,062 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:28:30,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 00:28:30,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:28:30 BoogieIcfgContainer [2021-10-11 00:28:30,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:28:30,298 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:28:30,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:28:30,299 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:28:30,299 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:28" (3/4) ... [2021-10-11 00:28:30,301 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:28:30,348 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d551eb69-9066-4468-8c41-6d67109f42ad/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:28:30,348 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:28:30,351 INFO L168 Benchmark]: Toolchain (without parser) took 3331.34 ms. Allocated memory is still 73.4 MB. Free memory was 51.8 MB in the beginning and 52.8 MB in the end (delta: -1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:28:30,351 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 54.5 MB. Free memory is still 35.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:28:30,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.87 ms. Allocated memory is still 73.4 MB. Free memory was 51.5 MB in the beginning and 40.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:30,353 INFO L168 Benchmark]: Boogie Procedure Inliner took 139.39 ms. Allocated memory is still 73.4 MB. Free memory was 40.7 MB in the beginning and 57.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:30,353 INFO L168 Benchmark]: Boogie Preprocessor took 64.52 ms. Allocated memory is still 73.4 MB. Free memory was 57.0 MB in the beginning and 55.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:28:30,354 INFO L168 Benchmark]: RCFGBuilder took 1094.82 ms. Allocated memory is still 73.4 MB. Free memory was 55.5 MB in the beginning and 41.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:30,355 INFO L168 Benchmark]: TraceAbstraction took 1603.07 ms. Allocated memory is still 73.4 MB. Free memory was 41.5 MB in the beginning and 54.7 MB in the end (delta: -13.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:30,356 INFO L168 Benchmark]: Witness Printer took 50.13 ms. Allocated memory is still 73.4 MB. Free memory was 54.7 MB in the beginning and 52.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:30,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 54.5 MB. Free memory is still 35.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.87 ms. Allocated memory is still 73.4 MB. Free memory was 51.5 MB in the beginning and 40.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 139.39 ms. Allocated memory is still 73.4 MB. Free memory was 40.7 MB in the beginning and 57.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.52 ms. Allocated memory is still 73.4 MB. Free memory was 57.0 MB in the beginning and 55.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1094.82 ms. Allocated memory is still 73.4 MB. Free memory was 55.5 MB in the beginning and 41.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1603.07 ms. Allocated memory is still 73.4 MB. Free memory was 41.5 MB in the beginning and 54.7 MB in the end (delta: -13.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. * Witness Printer took 50.13 ms. Allocated memory is still 73.4 MB. Free memory was 54.7 MB in the beginning and 52.8 MB in the end (delta: 1.9 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: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 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, 0.3s 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...