./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/addsub_double_exact.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_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/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_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_double_exact.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/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_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/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 1164a9832b4afc44dcf9dcf8d1d6de462821ea74 ................................................................................................................................................................................................................................................ 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_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/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_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_double_exact.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/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_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/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 1164a9832b4afc44dcf9dcf8d1d6de462821ea74 ........................................................................................................................................................................................................................................................................................... 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 20:11:25,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:11:25,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:11:25,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:11:25,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:11:25,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:11:25,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:11:25,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:11:25,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:11:25,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:11:25,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:11:25,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:11:25,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:11:25,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:11:25,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:11:25,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:11:25,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:11:25,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:11:25,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:11:25,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:11:25,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:11:25,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:11:25,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:11:25,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:11:25,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:11:25,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:11:25,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:11:25,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:11:25,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:11:25,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:11:25,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:11:25,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:11:25,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:11:25,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:11:25,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:11:25,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:11:25,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:11:25,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:11:25,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:11:25,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:11:25,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:11:25,724 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:11:25,755 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:11:25,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:11:25,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:11:25,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:11:25,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:11:25,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:11:25,758 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:11:25,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:11:25,758 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:11:25,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:11:25,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:11:25,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:11:25,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:11:25,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:11:25,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:11:25,760 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:11:25,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:11:25,760 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:11:25,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:11:25,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:11:25,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:11:25,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:11:25,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:11:25,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:11:25,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:11:25,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:11:25,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:11:25,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:11:25,770 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:11:25,770 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:11:25,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:11:25,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:11:25,771 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_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1164a9832b4afc44dcf9dcf8d1d6de462821ea74 [2021-10-15 20:11:26,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:11:26,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:11:26,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:11:26,070 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:11:26,070 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:11:26,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-benchs/addsub_double_exact.c [2021-10-15 20:11:26,160 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/data/d43a83deb/25acc110a40146f98c8ea9876b6fce82/FLAGdf68cb618 [2021-10-15 20:11:26,584 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:11:26,585 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/sv-benchmarks/c/float-benchs/addsub_double_exact.c [2021-10-15 20:11:26,591 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/data/d43a83deb/25acc110a40146f98c8ea9876b6fce82/FLAGdf68cb618 [2021-10-15 20:11:26,999 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/data/d43a83deb/25acc110a40146f98c8ea9876b6fce82 [2021-10-15 20:11:27,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:11:27,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:11:27,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:11:27,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:11:27,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:11:27,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:11:27" (1/1) ... [2021-10-15 20:11:27,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a44fab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:27, skipping insertion in model container [2021-10-15 20:11:27,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:11:27" (1/1) ... [2021-10-15 20:11:27,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:11:27,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:11:27,198 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_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/sv-benchmarks/c/float-benchs/addsub_double_exact.c[393,406] [2021-10-15 20:11:27,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:11:27,229 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:11:27,248 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_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/sv-benchmarks/c/float-benchs/addsub_double_exact.c[393,406] [2021-10-15 20:11:27,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:11:27,264 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:11:27,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:27 WrapperNode [2021-10-15 20:11:27,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:11:27,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:11:27,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:11:27,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:11:27,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:27" (1/1) ... [2021-10-15 20:11:27,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:27" (1/1) ... [2021-10-15 20:11:27,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:11:27,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:11:27,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:11:27,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:11:27,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:27" (1/1) ... [2021-10-15 20:11:27,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:27" (1/1) ... [2021-10-15 20:11:27,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:27" (1/1) ... [2021-10-15 20:11:27,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:27" (1/1) ... [2021-10-15 20:11:27,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:27" (1/1) ... [2021-10-15 20:11:27,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:27" (1/1) ... [2021-10-15 20:11:27,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:27" (1/1) ... [2021-10-15 20:11:27,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:11:27,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:11:27,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:11:27,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:11:27,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:27" (1/1) ... [2021-10-15 20:11:27,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:11:27,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:11:27,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:11:27,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:11:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:11:27,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:11:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:11:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:11:27,594 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:11:27,595 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-15 20:11:27,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:11:27 BoogieIcfgContainer [2021-10-15 20:11:27,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:11:27,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:11:27,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:11:27,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:11:27,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:11:27" (1/3) ... [2021-10-15 20:11:27,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116450ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:11:27, skipping insertion in model container [2021-10-15 20:11:27,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:27" (2/3) ... [2021-10-15 20:11:27,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116450ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:11:27, skipping insertion in model container [2021-10-15 20:11:27,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:11:27" (3/3) ... [2021-10-15 20:11:27,606 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_double_exact.c [2021-10-15 20:11:27,611 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:11:27,611 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:11:27,659 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:11:27,666 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 20:11:27,666 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:11:27,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 20:11:27,689 INFO L129 PetriNetUnfolder]: 1/9 cut-off events. [2021-10-15 20:11:27,690 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:11:27,691 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 5 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 20:11:27,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 20:11:27,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 5 places, 4 transitions, 8 flow [2021-10-15 20:11:27,696 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-10-15 20:11:27,696 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:11:27,696 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:11:27,697 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-10-15 20:11:27,697 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:11:27,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:11:27,702 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-15 20:11:27,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:11:27,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516306731] [2021-10-15 20:11:27,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:11:27,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:11:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:11:27,840 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:11:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:11:27,889 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:11:27,892 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:11:27,893 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:11:27,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:11:27,901 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:11:27,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:11:27 BoogieIcfgContainer [2021-10-15 20:11:27,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:11:27,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:11:27,920 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:11:27,920 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:11:27,920 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:11:27" (3/4) ... [2021-10-15 20:11:27,923 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 20:11:27,924 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:11:27,927 INFO L168 Benchmark]: Toolchain (without parser) took 921.36 ms. Allocated memory is still 104.9 MB. Free memory was 59.6 MB in the beginning and 54.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2021-10-15 20:11:27,928 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory is still 76.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:11:27,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.09 ms. Allocated memory is still 104.9 MB. Free memory was 59.4 MB in the beginning and 80.4 MB in the end (delta: -21.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:11:27,930 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.69 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 78.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:11:27,931 INFO L168 Benchmark]: Boogie Preprocessor took 29.66 ms. Allocated memory is still 104.9 MB. Free memory was 78.9 MB in the beginning and 78.1 MB in the end (delta: 830.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:11:27,932 INFO L168 Benchmark]: RCFGBuilder took 265.09 ms. Allocated memory is still 104.9 MB. Free memory was 78.1 MB in the beginning and 68.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:11:27,934 INFO L168 Benchmark]: TraceAbstraction took 319.64 ms. Allocated memory is still 104.9 MB. Free memory was 68.4 MB in the beginning and 55.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:11:27,940 INFO L168 Benchmark]: Witness Printer took 4.89 ms. Allocated memory is still 104.9 MB. Free memory was 55.0 MB in the beginning and 54.8 MB in the end (delta: 271.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:11:27,946 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory is still 76.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.09 ms. Allocated memory is still 104.9 MB. Free memory was 59.4 MB in the beginning and 80.4 MB in the end (delta: -21.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.69 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 78.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.66 ms. Allocated memory is still 104.9 MB. Free memory was 78.9 MB in the beginning and 78.1 MB in the end (delta: 830.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 265.09 ms. Allocated memory is still 104.9 MB. Free memory was 78.1 MB in the beginning and 68.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 319.64 ms. Allocated memory is still 104.9 MB. Free memory was 68.4 MB in the beginning and 55.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.89 ms. Allocated memory is still 104.9 MB. Free memory was 55.0 MB in the beginning and 54.8 MB in the end (delta: 271.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 6]: 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 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 13. Possible FailurePath: [L10] double x, y, z, r; [L12] x = 1e8 [L13] y = x + 1 [L14] z = x - 1 [L15] r = y - z [L6] COND TRUE !(cond) [L6] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 244.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 28.4ms, 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: 16.9ms SsaConstructionTime, 55.5ms 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 20:11:28,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/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 20:11:30,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:11:30,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:11:30,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:11:30,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:11:30,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:11:30,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:11:30,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:11:30,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:11:30,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:11:30,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:11:30,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:11:30,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:11:30,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:11:30,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:11:30,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:11:30,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:11:30,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:11:30,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:11:30,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:11:30,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:11:30,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:11:30,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:11:30,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:11:30,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:11:30,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:11:30,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:11:30,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:11:30,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:11:30,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:11:30,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:11:30,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:11:30,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:11:30,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:11:30,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:11:30,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:11:30,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:11:30,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:11:30,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:11:30,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:11:30,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:11:30,471 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 20:11:30,497 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:11:30,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:11:30,497 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:11:30,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:11:30,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:11:30,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:11:30,499 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:11:30,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:11:30,500 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:11:30,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:11:30,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:11:30,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:11:30,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:11:30,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:11:30,501 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 20:11:30,501 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 20:11:30,502 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:11:30,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:11:30,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:11:30,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:11:30,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:11:30,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:11:30,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:11:30,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:11:30,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:11:30,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:11:30,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:11:30,504 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 20:11:30,504 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 20:11:30,505 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:11:30,505 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:11:30,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:11:30,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:11:30,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 20:11:30,506 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_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1164a9832b4afc44dcf9dcf8d1d6de462821ea74 [2021-10-15 20:11:30,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:11:30,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:11:30,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:11:30,919 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:11:30,920 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:11:30,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-benchs/addsub_double_exact.c [2021-10-15 20:11:31,000 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/data/16f97c601/511a109a1e5044a9ad29ec9e377516c5/FLAG946311c9f [2021-10-15 20:11:31,490 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:11:31,491 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/sv-benchmarks/c/float-benchs/addsub_double_exact.c [2021-10-15 20:11:31,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/data/16f97c601/511a109a1e5044a9ad29ec9e377516c5/FLAG946311c9f [2021-10-15 20:11:31,877 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/data/16f97c601/511a109a1e5044a9ad29ec9e377516c5 [2021-10-15 20:11:31,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:11:31,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:11:31,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:11:31,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:11:31,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:11:31,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:11:31" (1/1) ... [2021-10-15 20:11:31,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a0630a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:31, skipping insertion in model container [2021-10-15 20:11:31,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:11:31" (1/1) ... [2021-10-15 20:11:31,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:11:31,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:11:32,043 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_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/sv-benchmarks/c/float-benchs/addsub_double_exact.c[393,406] [2021-10-15 20:11:32,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:11:32,065 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:11:32,077 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_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/sv-benchmarks/c/float-benchs/addsub_double_exact.c[393,406] [2021-10-15 20:11:32,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:11:32,122 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:11:32,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:32 WrapperNode [2021-10-15 20:11:32,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:11:32,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:11:32,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:11:32,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:11:32,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:32" (1/1) ... [2021-10-15 20:11:32,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:32" (1/1) ... [2021-10-15 20:11:32,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:11:32,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:11:32,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:11:32,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:11:32,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:32" (1/1) ... [2021-10-15 20:11:32,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:32" (1/1) ... [2021-10-15 20:11:32,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:32" (1/1) ... [2021-10-15 20:11:32,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:32" (1/1) ... [2021-10-15 20:11:32,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:32" (1/1) ... [2021-10-15 20:11:32,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:32" (1/1) ... [2021-10-15 20:11:32,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:32" (1/1) ... [2021-10-15 20:11:32,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:11:32,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:11:32,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:11:32,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:11:32,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:32" (1/1) ... [2021-10-15 20:11:32,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:11:32,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:11:32,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:11:32,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:11:32,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:11:32,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:11:32,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 20:11:32,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:11:33,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:11:33,160 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-15 20:11:33,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:11:33 BoogieIcfgContainer [2021-10-15 20:11:33,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:11:33,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:11:33,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:11:33,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:11:33,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:11:31" (1/3) ... [2021-10-15 20:11:33,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8d6f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:11:33, skipping insertion in model container [2021-10-15 20:11:33,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:11:32" (2/3) ... [2021-10-15 20:11:33,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8d6f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:11:33, skipping insertion in model container [2021-10-15 20:11:33,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:11:33" (3/3) ... [2021-10-15 20:11:33,171 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_double_exact.c [2021-10-15 20:11:33,176 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:11:33,176 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:11:33,224 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:11:33,231 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 20:11:33,231 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:11:33,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 20:11:33,257 INFO L129 PetriNetUnfolder]: 1/9 cut-off events. [2021-10-15 20:11:33,258 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:11:33,259 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 5 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 20:11:33,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 20:11:33,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 5 places, 4 transitions, 8 flow [2021-10-15 20:11:33,265 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-10-15 20:11:33,266 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:11:33,266 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:11:33,266 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-10-15 20:11:33,267 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:11:33,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:11:33,273 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-15 20:11:33,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:11:33,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618971910] [2021-10-15 20:11:33,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:11:33,286 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:11:33,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:11:33,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:11:33,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 20:11:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:11:33,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 20:11:33,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:11:33,763 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 20:11:33,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:11:33,830 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 20:11:33,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:11:33,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618971910] [2021-10-15 20:11:33,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618971910] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:11:33,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:11:33,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-15 20:11:33,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873765923] [2021-10-15 20:11:33,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:11:33,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:11:33,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:11:33,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:11:33,867 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 9 [2021-10-15 20:11:33,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 4 transitions, 8 flow. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 20:11:33,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:11:33,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 9 [2021-10-15 20:11:33,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:11:34,095 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-10-15 20:11:34,095 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:11:34,095 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 20:11:34,096 INFO L132 encePairwiseOnDemand]: 6/9 looper letters, 0 selfloop transitions, 0 changer transitions 2/2 dead transitions. [2021-10-15 20:11:34,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 6 places, 2 transitions, 8 flow [2021-10-15 20:11:34,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:11:34,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:11:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-10-15 20:11:34,104 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2021-10-15 20:11:34,105 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 19 transitions. [2021-10-15 20:11:34,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 19 transitions. [2021-10-15 20:11:34,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:11:34,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 19 transitions. [2021-10-15 20:11:34,110 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 20:11:34,114 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 20:11:34,114 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 20:11:34,116 INFO L186 Difference]: Start difference. First operand has 5 places, 4 transitions, 8 flow. Second operand 4 states and 19 transitions. [2021-10-15 20:11:34,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 6 places, 2 transitions, 8 flow [2021-10-15 20:11:34,118 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 20:11:34,119 INFO L242 Difference]: Finished difference. Result has 6 places, 0 transitions, 0 flow [2021-10-15 20:11:34,121 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 20:11:34,122 INFO L334 CegarLoopForPetriNet]: 5 programPoint places, 1 predicate places. [2021-10-15 20:11:34,122 INFO L470 AbstractCegarLoop]: Abstraction has has 6 places, 0 transitions, 0 flow [2021-10-15 20:11:34,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 20:11:34,125 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:11:34,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:11:34,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:11:34,345 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:11:34,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:11:34 BoogieIcfgContainer [2021-10-15 20:11:34,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:11:34,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:11:34,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:11:34,350 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:11:34,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:11:33" (3/4) ... [2021-10-15 20:11:34,356 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 20:11:34,369 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-15 20:11:34,369 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 20:11:34,370 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 20:11:34,370 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:11:34,400 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:11:34,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:11:34,401 INFO L168 Benchmark]: Toolchain (without parser) took 2519.48 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 62.7 MB in the beginning and 71.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-15 20:11:34,402 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:11:34,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.09 ms. Allocated memory is still 79.7 MB. Free memory was 62.5 MB in the beginning and 63.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:11:34,406 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.30 ms. Allocated memory is still 79.7 MB. Free memory was 63.4 MB in the beginning and 62.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:11:34,411 INFO L168 Benchmark]: Boogie Preprocessor took 41.89 ms. Allocated memory is still 79.7 MB. Free memory was 62.1 MB in the beginning and 61.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:11:34,412 INFO L168 Benchmark]: RCFGBuilder took 954.24 ms. Allocated memory is still 79.7 MB. Free memory was 60.8 MB in the beginning and 51.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:11:34,412 INFO L168 Benchmark]: TraceAbstraction took 1184.89 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 51.4 MB in the beginning and 73.8 MB in the end (delta: -22.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:11:34,413 INFO L168 Benchmark]: Witness Printer took 49.97 ms. Allocated memory is still 98.6 MB. Free memory was 73.8 MB in the beginning and 71.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:11:34,421 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 241.09 ms. Allocated memory is still 79.7 MB. Free memory was 62.5 MB in the beginning and 63.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.30 ms. Allocated memory is still 79.7 MB. Free memory was 63.4 MB in the beginning and 62.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.89 ms. Allocated memory is still 79.7 MB. Free memory was 62.1 MB in the beginning and 61.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 954.24 ms. Allocated memory is still 79.7 MB. Free memory was 60.8 MB in the beginning and 51.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1184.89 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 51.4 MB in the beginning and 73.8 MB in the end (delta: -22.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 49.97 ms. Allocated memory is still 98.6 MB. Free memory was 73.8 MB in the beginning and 71.6 MB in the end (delta: 2.2 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: 6]: 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: 1.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1125.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 259.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 1 SDslu, 2 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 190.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.5ms 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: 9.7ms SsaConstructionTime, 220.1ms SatisfiabilityAnalysisTime, 275.2ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 6 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 8 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 20:11:34,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23ab81e-1add-4917-b9fe-12d6e5aa4cc0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...