./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.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_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3 --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 ad220425e59782d2842875bc5488a6e9ea4ef5ae ............................................................................................................................................................................................................................................... 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_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3 --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 ad220425e59782d2842875bc5488a6e9ea4ef5ae ........................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:23:45,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:23:45,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:23:46,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:23:46,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:23:46,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:23:46,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:23:46,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:23:46,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:23:46,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:23:46,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:23:46,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:23:46,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:23:46,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:23:46,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:23:46,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:23:46,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:23:46,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:23:46,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:23:46,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:23:46,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:23:46,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:23:46,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:23:46,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:23:46,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:23:46,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:23:46,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:23:46,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:23:46,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:23:46,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:23:46,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:23:46,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:23:46,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:23:46,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:23:46,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:23:46,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:23:46,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:23:46,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:23:46,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:23:46,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:23:46,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:23:46,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:23:46,206 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:23:46,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:23:46,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:23:46,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:23:46,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:23:46,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:23:46,222 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:23:46,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:23:46,222 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:23:46,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:23:46,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:23:46,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:23:46,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:23:46,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:23:46,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:23:46,226 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:23:46,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:23:46,226 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:23:46,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:23:46,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:23:46,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:23:46,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:23:46,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:23:46,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:23:46,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:23:46,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:23:46,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:23:46,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:23:46,230 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:23:46,233 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:23:46,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:23:46,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:23:46,234 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_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad220425e59782d2842875bc5488a6e9ea4ef5ae [2021-10-15 20:23:46,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:23:46,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:23:46,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:23:46,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:23:46,588 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:23:46,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c [2021-10-15 20:23:46,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/data/ec6eef724/cdf8c26a18eb42a0af21d627adc86870/FLAG8d1a1f9a8 [2021-10-15 20:23:47,210 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:23:47,211 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c [2021-10-15 20:23:47,238 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/data/ec6eef724/cdf8c26a18eb42a0af21d627adc86870/FLAG8d1a1f9a8 [2021-10-15 20:23:47,582 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/data/ec6eef724/cdf8c26a18eb42a0af21d627adc86870 [2021-10-15 20:23:47,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:23:47,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:23:47,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:23:47,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:23:47,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:23:47,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:23:47" (1/1) ... [2021-10-15 20:23:47,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b37811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:47, skipping insertion in model container [2021-10-15 20:23:47,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:23:47" (1/1) ... [2021-10-15 20:23:47,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:23:47,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:23:47,843 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_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c[440,453] [2021-10-15 20:23:47,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:23:47,859 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:23:47,879 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_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c[440,453] [2021-10-15 20:23:47,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:23:47,895 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:23:47,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:47 WrapperNode [2021-10-15 20:23:47,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:23:47,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:23:47,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:23:47,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:23:47,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:47" (1/1) ... [2021-10-15 20:23:47,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:47" (1/1) ... [2021-10-15 20:23:47,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:23:47,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:23:47,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:23:47,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:23:47,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:47" (1/1) ... [2021-10-15 20:23:47,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:47" (1/1) ... [2021-10-15 20:23:47,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:47" (1/1) ... [2021-10-15 20:23:47,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:47" (1/1) ... [2021-10-15 20:23:47,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:47" (1/1) ... [2021-10-15 20:23:47,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:47" (1/1) ... [2021-10-15 20:23:47,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:47" (1/1) ... [2021-10-15 20:23:47,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:23:47,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:23:47,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:23:47,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:23:47,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:47" (1/1) ... [2021-10-15 20:23:47,966 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:23:47,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:47,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:23:48,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:23:48,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:23:48,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:23:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:23:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:23:48,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:23:48,222 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-15 20:23:48,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:23:48 BoogieIcfgContainer [2021-10-15 20:23:48,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:23:48,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:23:48,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:23:48,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:23:48,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:23:47" (1/3) ... [2021-10-15 20:23:48,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771f439a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:23:48, skipping insertion in model container [2021-10-15 20:23:48,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:47" (2/3) ... [2021-10-15 20:23:48,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771f439a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:23:48, skipping insertion in model container [2021-10-15 20:23:48,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:23:48" (3/3) ... [2021-10-15 20:23:48,234 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp7.c [2021-10-15 20:23:48,241 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:23:48,241 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:23:48,301 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:23:48,310 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=PETRI_NET, 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 [2021-10-15 20:23:48,310 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:23:48,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 20:23:48,345 INFO L129 PetriNetUnfolder]: 1/9 cut-off events. [2021-10-15 20:23:48,346 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:23:48,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10 conditions, 9 events. 1/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 20:23:48,348 INFO L82 GeneralOperation]: Start removeDead. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 20:23:48,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 5 places, 4 transitions, 8 flow [2021-10-15 20:23:48,355 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-10-15 20:23:48,355 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:23:48,355 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:48,356 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-10-15 20:23:48,357 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:48,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:48,364 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-15 20:23:48,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:23:48,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296200513] [2021-10-15 20:23:48,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:48,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:23:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:23:48,530 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:23:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:23:48,623 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:23:48,627 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:23:48,628 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:23:48,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:23:48,641 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:23:48,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:23:48 BoogieIcfgContainer [2021-10-15 20:23:48,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:23:48,667 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:23:48,668 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:23:48,668 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:23:48,669 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:23:48" (3/4) ... [2021-10-15 20:23:48,673 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 20:23:48,674 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:23:48,678 INFO L168 Benchmark]: Toolchain (without parser) took 1089.01 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 64.4 MB in the beginning and 78.1 MB in the end (delta: -13.7 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:48,679 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 62.0 MB in the beginning and 62.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:23:48,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.71 ms. Allocated memory is still 86.0 MB. Free memory was 64.4 MB in the beginning and 61.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:48,683 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.28 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 59.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:23:48,685 INFO L168 Benchmark]: Boogie Preprocessor took 22.75 ms. Allocated memory is still 86.0 MB. Free memory was 59.9 MB in the beginning and 58.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:48,687 INFO L168 Benchmark]: RCFGBuilder took 268.11 ms. Allocated memory is still 86.0 MB. Free memory was 58.9 MB in the beginning and 50.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:48,697 INFO L168 Benchmark]: TraceAbstraction took 440.43 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 49.9 MB in the beginning and 78.1 MB in the end (delta: -28.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:23:48,697 INFO L168 Benchmark]: Witness Printer took 6.56 ms. Allocated memory is still 104.9 MB. Free memory is still 78.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:23:48,706 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 62.0 MB in the beginning and 62.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.71 ms. Allocated memory is still 86.0 MB. Free memory was 64.4 MB in the beginning and 61.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.28 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 59.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.75 ms. Allocated memory is still 86.0 MB. Free memory was 59.9 MB in the beginning and 58.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 268.11 ms. Allocated memory is still 86.0 MB. Free memory was 58.9 MB in the beginning and 50.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 440.43 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 49.9 MB in the beginning and 78.1 MB in the end (delta: -28.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.56 ms. Allocated memory is still 104.9 MB. Free memory is still 78.1 MB. 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: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryArithmeticFLOAToperation at line 10, overapproximation of someUnaryFLOAToperation at line 7. Possible FailurePath: [L6] float f = 0x1.9e0c22p-101f; [L7] float g = -0x1.3c9014p-50f; [L8] float target = -0x1p-149f; [L10] float result = f * g; [L12] COND TRUE !(result == target) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 342.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 42.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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: 7.8ms SsaConstructionTime, 75.3ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 [2021-10-15 20:23:48,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/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 [2021-10-15 20:23:51,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:23:51,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:23:51,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:23:51,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:23:51,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:23:51,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:23:51,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:23:51,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:23:51,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:23:51,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:23:51,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:23:51,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:23:51,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:23:51,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:23:51,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:23:51,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:23:51,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:23:51,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:23:51,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:23:51,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:23:51,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:23:51,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:23:51,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:23:51,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:23:51,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:23:51,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:23:51,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:23:51,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:23:51,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:23:51,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:23:51,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:23:51,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:23:51,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:23:51,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:23:51,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:23:51,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:23:51,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:23:51,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:23:51,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:23:51,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:23:51,677 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 20:23:51,711 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:23:51,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:23:51,715 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:23:51,715 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:23:51,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:23:51,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:23:51,719 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:23:51,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:23:51,720 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:23:51,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:23:51,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:23:51,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:23:51,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:23:51,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:23:51,723 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 20:23:51,724 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 20:23:51,724 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:23:51,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:23:51,725 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:23:51,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:23:51,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:23:51,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:23:51,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:23:51,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:23:51,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:23:51,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:23:51,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:23:51,728 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 20:23:51,729 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 20:23:51,729 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:23:51,729 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:23:51,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:23:51,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:23:51,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 20:23:51,731 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_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad220425e59782d2842875bc5488a6e9ea4ef5ae [2021-10-15 20:23:52,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:23:52,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:23:52,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:23:52,289 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:23:52,292 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:23:52,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c [2021-10-15 20:23:52,384 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/data/fa64c7091/f45fc46c42224541beb37477106c8ebf/FLAG32df7cc2c [2021-10-15 20:23:53,054 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:23:53,055 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c [2021-10-15 20:23:53,063 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/data/fa64c7091/f45fc46c42224541beb37477106c8ebf/FLAG32df7cc2c [2021-10-15 20:23:53,413 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/data/fa64c7091/f45fc46c42224541beb37477106c8ebf [2021-10-15 20:23:53,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:23:53,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:23:53,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:23:53,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:23:53,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:23:53,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:23:53" (1/1) ... [2021-10-15 20:23:53,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c64bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:53, skipping insertion in model container [2021-10-15 20:23:53,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:23:53" (1/1) ... [2021-10-15 20:23:53,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:23:53,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:23:53,648 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_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c[440,453] [2021-10-15 20:23:53,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:23:53,670 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:23:53,691 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_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c[440,453] [2021-10-15 20:23:53,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:23:53,723 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:23:53,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:53 WrapperNode [2021-10-15 20:23:53,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:23:53,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:23:53,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:23:53,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:23:53,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:53" (1/1) ... [2021-10-15 20:23:53,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:53" (1/1) ... [2021-10-15 20:23:53,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:23:53,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:23:53,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:23:53,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:23:53,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:53" (1/1) ... [2021-10-15 20:23:53,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:53" (1/1) ... [2021-10-15 20:23:53,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:53" (1/1) ... [2021-10-15 20:23:53,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:53" (1/1) ... [2021-10-15 20:23:53,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:53" (1/1) ... [2021-10-15 20:23:53,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:53" (1/1) ... [2021-10-15 20:23:53,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:53" (1/1) ... [2021-10-15 20:23:53,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:23:53,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:23:53,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:23:53,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:23:53,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:53" (1/1) ... [2021-10-15 20:23:53,856 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:23:53,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:23:53,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:23:53,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:23:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:23:53,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:23:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 20:23:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:23:54,286 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:23:54,287 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-15 20:23:54,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:23:54 BoogieIcfgContainer [2021-10-15 20:23:54,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:23:54,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:23:54,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:23:54,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:23:54,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:23:53" (1/3) ... [2021-10-15 20:23:54,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130aa38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:23:54, skipping insertion in model container [2021-10-15 20:23:54,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:23:53" (2/3) ... [2021-10-15 20:23:54,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130aa38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:23:54, skipping insertion in model container [2021-10-15 20:23:54,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:23:54" (3/3) ... [2021-10-15 20:23:54,298 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp7.c [2021-10-15 20:23:54,304 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:23:54,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:23:54,362 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:23:54,370 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=PETRI_NET, 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 [2021-10-15 20:23:54,370 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:23:54,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 20:23:54,404 INFO L129 PetriNetUnfolder]: 1/9 cut-off events. [2021-10-15 20:23:54,404 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:23:54,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10 conditions, 9 events. 1/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 20:23:54,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 20:23:54,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 5 places, 4 transitions, 8 flow [2021-10-15 20:23:54,413 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-10-15 20:23:54,413 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:23:54,413 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:23:54,414 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-10-15 20:23:54,414 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:23:54,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:23:54,421 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-15 20:23:54,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:23:54,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127584371] [2021-10-15 20:23:54,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:23:54,436 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:23:54,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:23:54,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:23:54,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 20:23:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:23:54,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 20:23:54,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:23:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:54,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:23:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:23:54,964 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:23:54,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127584371] [2021-10-15 20:23:54,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127584371] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:23:54,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:23:54,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-15 20:23:54,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629853100] [2021-10-15 20:23:54,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:23:54,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:23:54,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:23:54,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:23:54,997 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 9 [2021-10-15 20:23:55,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 4 transitions, 8 flow. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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) [2021-10-15 20:23:55,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:23:55,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 9 [2021-10-15 20:23:55,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:23:55,220 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-10-15 20:23:55,220 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:23:55,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6 conditions, 2 events. 0/2 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/3 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-10-15 20:23:55,222 INFO L132 encePairwiseOnDemand]: 6/9 looper letters, 0 selfloop transitions, 0 changer transitions 2/2 dead transitions. [2021-10-15 20:23:55,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 6 places, 2 transitions, 8 flow [2021-10-15 20:23:55,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:23:55,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:23:55,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-10-15 20:23:55,236 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2021-10-15 20:23:55,236 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 19 transitions. [2021-10-15 20:23:55,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 19 transitions. [2021-10-15 20:23:55,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:23:55,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 19 transitions. [2021-10-15 20:23:55,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-10-15 20:23:55,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2021-10-15 20:23:55,248 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2021-10-15 20:23:55,250 INFO L186 Difference]: Start difference. First operand has 5 places, 4 transitions, 8 flow. Second operand 4 states and 19 transitions. [2021-10-15 20:23:55,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 6 places, 2 transitions, 8 flow [2021-10-15 20:23:55,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 6 places, 2 transitions, 8 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:23:55,255 INFO L242 Difference]: Finished difference. Result has 6 places, 0 transitions, 0 flow [2021-10-15 20:23:55,258 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=9, PETRI_DIFFERENCE_MINUEND_FLOW=4, PETRI_DIFFERENCE_MINUEND_PLACES=3, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=6, PETRI_TRANSITIONS=0} [2021-10-15 20:23:55,259 INFO L334 CegarLoopForPetriNet]: 5 programPoint places, 1 predicate places. [2021-10-15 20:23:55,259 INFO L470 AbstractCegarLoop]: Abstraction has has 6 places, 0 transitions, 0 flow [2021-10-15 20:23:55,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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) [2021-10-15 20:23:55,262 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:23:55,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:23:55,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:23:55,482 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:23:55,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:23:55 BoogieIcfgContainer [2021-10-15 20:23:55,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:23:55,488 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:23:55,488 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:23:55,489 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:23:55,490 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:23:54" (3/4) ... [2021-10-15 20:23:55,492 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 20:23:55,515 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-15 20:23:55,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-15 20:23:55,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 20:23:55,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:23:55,566 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:23:55,567 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:23:55,569 INFO L168 Benchmark]: Toolchain (without parser) took 2147.13 ms. Allocated memory is still 81.8 MB. Free memory was 47.1 MB in the beginning and 61.9 MB in the end (delta: -14.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:23:55,570 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory was 63.3 MB in the beginning and 63.3 MB in the end (delta: 82.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:23:55,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.68 ms. Allocated memory is still 81.8 MB. Free memory was 46.9 MB in the beginning and 66.4 MB in the end (delta: -19.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:55,571 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.03 ms. Allocated memory is still 81.8 MB. Free memory was 66.4 MB in the beginning and 64.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:55,572 INFO L168 Benchmark]: Boogie Preprocessor took 58.47 ms. Allocated memory is still 81.8 MB. Free memory was 64.8 MB in the beginning and 63.8 MB in the end (delta: 992.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:23:55,572 INFO L168 Benchmark]: RCFGBuilder took 448.98 ms. Allocated memory is still 81.8 MB. Free memory was 63.8 MB in the beginning and 54.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:55,573 INFO L168 Benchmark]: TraceAbstraction took 1196.21 ms. Allocated memory is still 81.8 MB. Free memory was 53.8 MB in the beginning and 64.0 MB in the end (delta: -10.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:55,574 INFO L168 Benchmark]: Witness Printer took 78.81 ms. Allocated memory is still 81.8 MB. Free memory was 64.0 MB in the beginning and 61.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:23:55,577 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory was 63.3 MB in the beginning and 63.3 MB in the end (delta: 82.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.68 ms. Allocated memory is still 81.8 MB. Free memory was 46.9 MB in the beginning and 66.4 MB in the end (delta: -19.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.03 ms. Allocated memory is still 81.8 MB. Free memory was 66.4 MB in the beginning and 64.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.47 ms. Allocated memory is still 81.8 MB. Free memory was 64.8 MB in the beginning and 63.8 MB in the end (delta: 992.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 448.98 ms. Allocated memory is still 81.8 MB. Free memory was 63.8 MB in the beginning and 54.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1196.21 ms. Allocated memory is still 81.8 MB. Free memory was 53.8 MB in the beginning and 64.0 MB in the end (delta: -10.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. * Witness Printer took 78.81 ms. Allocated memory is still 81.8 MB. Free memory was 64.0 MB in the beginning and 61.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1125.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 268.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 40.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 1 SDslu, 2 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 174.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 128.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 4, 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: 30.1ms SsaConstructionTime, 149.1ms SatisfiabilityAnalysisTime, 267.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 SizeOfPredicates, 5 NumberOfNonLiveVariables, 34 ConjunctsInSsa, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 20:23:55,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bc2675-01ed-4c54-ba24-bcdf8013e4f9/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...