./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0740.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_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/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_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0740.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/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_533cda76-d589-432d-8f86-c0b689b41164/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 25f88ce65e61cc7e7d9ef61e43238296440b1f18 ....................................................................................................................................................................................................................................................................................................................... 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_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/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_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0740.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/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_533cda76-d589-432d-8f86-c0b689b41164/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 25f88ce65e61cc7e7d9ef61e43238296440b1f18 ...................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:16:22,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:16:22,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:16:22,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:16:22,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:16:22,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:16:22,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:16:22,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:16:22,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:16:22,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:16:22,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:16:22,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:16:22,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:16:22,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:16:22,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:16:22,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:16:22,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:16:22,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:16:22,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:16:22,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:16:22,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:16:22,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:16:22,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:16:22,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:16:22,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:16:22,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:16:22,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:16:22,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:16:22,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:16:22,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:16:22,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:16:22,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:16:22,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:16:22,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:16:22,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:16:22,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:16:22,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:16:22,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:16:22,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:16:22,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:16:22,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:16:22,783 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:16:22,812 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:16:22,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:16:22,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:16:22,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:16:22,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:16:22,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:16:22,815 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:16:22,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:16:22,815 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:16:22,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:16:22,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:16:22,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:16:22,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:16:22,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:16:22,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:16:22,817 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:16:22,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:16:22,818 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:16:22,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:16:22,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:16:22,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:16:22,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:16:22,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:16:22,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:16:22,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:16:22,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:16:22,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:16:22,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:16:22,821 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:16:22,821 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:16:22,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:16:22,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:16:22,822 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_533cda76-d589-432d-8f86-c0b689b41164/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25f88ce65e61cc7e7d9ef61e43238296440b1f18 [2021-10-15 20:16:23,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:16:23,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:16:23,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:16:23,160 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:16:23,161 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:16:23,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/float_req_bl_0740.c [2021-10-15 20:16:23,244 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/data/f0b867a99/c4754681b9a9410ebf21188ed275509e/FLAG87a8d6001 [2021-10-15 20:16:23,923 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:16:23,924 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/sv-benchmarks/c/float-newlib/float_req_bl_0740.c [2021-10-15 20:16:23,942 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/data/f0b867a99/c4754681b9a9410ebf21188ed275509e/FLAG87a8d6001 [2021-10-15 20:16:24,268 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/data/f0b867a99/c4754681b9a9410ebf21188ed275509e [2021-10-15 20:16:24,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:16:24,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:16:24,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:16:24,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:16:24,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:16:24,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:16:24" (1/1) ... [2021-10-15 20:16:24,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d4a973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:24, skipping insertion in model container [2021-10-15 20:16:24,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:16:24" (1/1) ... [2021-10-15 20:16:24,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:16:24,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:16:24,559 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_533cda76-d589-432d-8f86-c0b689b41164/sv-benchmarks/c/float-newlib/float_req_bl_0740.c[1930,1943] [2021-10-15 20:16:24,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:16:24,574 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:16:24,639 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_533cda76-d589-432d-8f86-c0b689b41164/sv-benchmarks/c/float-newlib/float_req_bl_0740.c[1930,1943] [2021-10-15 20:16:24,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:16:24,660 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:16:24,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:24 WrapperNode [2021-10-15 20:16:24,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:16:24,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:16:24,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:16:24,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:16:24,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:24" (1/1) ... [2021-10-15 20:16:24,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:24" (1/1) ... [2021-10-15 20:16:24,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:16:24,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:16:24,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:16:24,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:16:24,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:24" (1/1) ... [2021-10-15 20:16:24,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:24" (1/1) ... [2021-10-15 20:16:24,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:24" (1/1) ... [2021-10-15 20:16:24,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:24" (1/1) ... [2021-10-15 20:16:24,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:24" (1/1) ... [2021-10-15 20:16:24,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:24" (1/1) ... [2021-10-15 20:16:24,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:24" (1/1) ... [2021-10-15 20:16:24,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:16:24,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:16:24,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:16:24,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:16:24,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:24" (1/1) ... [2021-10-15 20:16:24,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:16:24,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:16:24,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:16:24,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:16:24,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:16:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:16:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-15 20:16:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 20:16:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-15 20:16:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:16:24,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:16:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 20:16:24,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 20:16:25,357 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:16:25,357 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-15 20:16:25,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:25 BoogieIcfgContainer [2021-10-15 20:16:25,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:16:25,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:16:25,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:16:25,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:16:25,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:16:24" (1/3) ... [2021-10-15 20:16:25,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac97077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:16:25, skipping insertion in model container [2021-10-15 20:16:25,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:24" (2/3) ... [2021-10-15 20:16:25,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac97077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:16:25, skipping insertion in model container [2021-10-15 20:16:25,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:25" (3/3) ... [2021-10-15 20:16:25,386 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0740.c [2021-10-15 20:16:25,392 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:16:25,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:16:25,499 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:16:25,512 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 20:16:25,512 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:16:25,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 50 transitions, 100 flow [2021-10-15 20:16:25,582 INFO L129 PetriNetUnfolder]: 18/50 cut-off events. [2021-10-15 20:16:25,583 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:25,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 50 events. 18/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-10-15 20:16:25,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 50 transitions, 100 flow [2021-10-15 20:16:25,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 46 transitions, 92 flow [2021-10-15 20:16:25,613 INFO L129 PetriNetUnfolder]: 5/19 cut-off events. [2021-10-15 20:16:25,615 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:25,615 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:25,617 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:25,617 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:25,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:25,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1903734416, now seen corresponding path program 1 times [2021-10-15 20:16:25,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:25,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769334310] [2021-10-15 20:16:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:25,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:25,854 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 20:16:25,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:25,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769334310] [2021-10-15 20:16:25,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769334310] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:25,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:25,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:16:25,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348803893] [2021-10-15 20:16:25,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:16:25,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:25,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:16:25,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:16:25,891 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 50 [2021-10-15 20:16:25,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 46 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 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 20:16:25,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:25,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 50 [2021-10-15 20:16:25,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:25,919 INFO L129 PetriNetUnfolder]: 11/40 cut-off events. [2021-10-15 20:16:25,919 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:25,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 40 events. 11/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 6/35 useless extension candidates. Maximal degree in co-relation 40. Up to 4 conditions per place. [2021-10-15 20:16:25,924 INFO L132 encePairwiseOnDemand]: 44/50 looper letters, 0 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2021-10-15 20:16:25,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 80 flow [2021-10-15 20:16:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:16:25,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 20:16:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2021-10-15 20:16:25,939 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.92 [2021-10-15 20:16:25,940 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 92 transitions. [2021-10-15 20:16:25,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 92 transitions. [2021-10-15 20:16:25,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:25,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 92 transitions. [2021-10-15 20:16:25,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 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 20:16:25,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 20:16:25,958 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 20:16:25,961 INFO L186 Difference]: Start difference. First operand has 30 places, 46 transitions, 92 flow. Second operand 2 states and 92 transitions. [2021-10-15 20:16:25,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 80 flow [2021-10-15 20:16:25,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 40 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:16:25,972 INFO L242 Difference]: Finished difference. Result has 31 places, 40 transitions, 80 flow [2021-10-15 20:16:25,975 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=31, PETRI_TRANSITIONS=40} [2021-10-15 20:16:25,976 INFO L334 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2021-10-15 20:16:25,976 INFO L470 AbstractCegarLoop]: Abstraction has has 31 places, 40 transitions, 80 flow [2021-10-15 20:16:25,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 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 20:16:25,978 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:25,978 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:25,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:16:25,980 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:25,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:25,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1484616397, now seen corresponding path program 1 times [2021-10-15 20:16:25,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:25,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359844752] [2021-10-15 20:16:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:25,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:16:26,065 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:16:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:16:26,184 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:16:26,185 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:16:26,188 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:16:26,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:16:26,198 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:16:26,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:16:26 BoogieIcfgContainer [2021-10-15 20:16:26,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:16:26,235 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:16:26,235 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:16:26,235 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:16:26,236 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:25" (3/4) ... [2021-10-15 20:16:26,239 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 20:16:26,239 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:16:26,242 INFO L168 Benchmark]: Toolchain (without parser) took 1967.10 ms. Allocated memory was 86.0 MB in the beginning and 123.7 MB in the end (delta: 37.7 MB). Free memory was 49.8 MB in the beginning and 54.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:26,242 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 65.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:16:26,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.21 ms. Allocated memory was 86.0 MB in the beginning and 123.7 MB in the end (delta: 37.7 MB). Free memory was 49.6 MB in the beginning and 98.3 MB in the end (delta: -48.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:26,249 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.10 ms. Allocated memory is still 123.7 MB. Free memory was 98.3 MB in the beginning and 96.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:26,250 INFO L168 Benchmark]: Boogie Preprocessor took 69.40 ms. Allocated memory is still 123.7 MB. Free memory was 96.1 MB in the beginning and 94.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:26,252 INFO L168 Benchmark]: RCFGBuilder took 551.77 ms. Allocated memory is still 123.7 MB. Free memory was 94.7 MB in the beginning and 82.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:26,254 INFO L168 Benchmark]: TraceAbstraction took 871.65 ms. Allocated memory is still 123.7 MB. Free memory was 82.1 MB in the beginning and 55.4 MB in the end (delta: 26.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:26,257 INFO L168 Benchmark]: Witness Printer took 4.70 ms. Allocated memory is still 123.7 MB. Free memory was 55.4 MB in the beginning and 54.8 MB in the end (delta: 545.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:26,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 65.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 387.21 ms. Allocated memory was 86.0 MB in the beginning and 123.7 MB in the end (delta: 37.7 MB). Free memory was 49.6 MB in the beginning and 98.3 MB in the end (delta: -48.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.10 ms. Allocated memory is still 123.7 MB. Free memory was 98.3 MB in the beginning and 96.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.40 ms. Allocated memory is still 123.7 MB. Free memory was 96.1 MB in the beginning and 94.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 551.77 ms. Allocated memory is still 123.7 MB. Free memory was 94.7 MB in the beginning and 82.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 871.65 ms. Allocated memory is still 123.7 MB. Free memory was 82.1 MB in the beginning and 55.4 MB in the end (delta: 26.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.70 ms. Allocated memory is still 123.7 MB. Free memory was 55.4 MB in the beginning and 54.8 MB in the end (delta: 545.3 kB). 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 - UnprovableResult [Line: 99]: 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 15, overapproximation of someBinaryArithmeticFLOAToperation at line 32, overapproximation of bitwiseAnd at line 29. Possible FailurePath: [L17] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L93] float x = -1.0f / 0.0f; [L20] float z; [L21] __uint32_t r, hx; [L22] __int32_t ix, s, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (ix) = gf_u.word [L29] hx = ix & 0x7fffffff VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L31] COND TRUE !((hx) < 0x7f800000L) [L32] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L95] float res = __ieee754_sqrtf(x); [L15] return x != x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L98] COND TRUE !isnan_float(res) [L99] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 701.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 94.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 96.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 0 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.3ms SsaConstructionTime, 100.4ms SatisfiabilityAnalysisTime, 77.2ms InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-15 20:16:26,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/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 20:16:29,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:16:29,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:16:29,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:16:29,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:16:29,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:16:29,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:16:29,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:16:29,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:16:29,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:16:29,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:16:29,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:16:29,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:16:29,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:16:29,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:16:29,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:16:29,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:16:29,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:16:29,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:16:29,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:16:29,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:16:29,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:16:29,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:16:29,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:16:29,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:16:29,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:16:29,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:16:29,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:16:29,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:16:29,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:16:29,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:16:29,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:16:29,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:16:29,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:16:29,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:16:29,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:16:29,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:16:29,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:16:29,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:16:29,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:16:29,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:16:29,180 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 20:16:29,229 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:16:29,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:16:29,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:16:29,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:16:29,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:16:29,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:16:29,233 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:16:29,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:16:29,233 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:16:29,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:16:29,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:16:29,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:16:29,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:16:29,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:16:29,236 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 20:16:29,237 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 20:16:29,237 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:16:29,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:16:29,237 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:16:29,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:16:29,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:16:29,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:16:29,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:16:29,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:16:29,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:16:29,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:16:29,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:16:29,240 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 20:16:29,240 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 20:16:29,241 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:16:29,241 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:16:29,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:16:29,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:16:29,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 20:16:29,242 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_533cda76-d589-432d-8f86-c0b689b41164/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25f88ce65e61cc7e7d9ef61e43238296440b1f18 [2021-10-15 20:16:29,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:16:29,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:16:29,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:16:29,755 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:16:29,756 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:16:29,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/float_req_bl_0740.c [2021-10-15 20:16:29,841 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/data/edd6d4e70/d2413d0f01504ca38f01006749428f80/FLAG66eb5db2f [2021-10-15 20:16:30,494 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:16:30,495 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/sv-benchmarks/c/float-newlib/float_req_bl_0740.c [2021-10-15 20:16:30,502 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/data/edd6d4e70/d2413d0f01504ca38f01006749428f80/FLAG66eb5db2f [2021-10-15 20:16:30,840 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/data/edd6d4e70/d2413d0f01504ca38f01006749428f80 [2021-10-15 20:16:30,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:16:30,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:16:30,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:16:30,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:16:30,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:16:30,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:16:30" (1/1) ... [2021-10-15 20:16:30,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4edc822d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:30, skipping insertion in model container [2021-10-15 20:16:30,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:16:30" (1/1) ... [2021-10-15 20:16:30,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:16:30,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:16:31,083 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_533cda76-d589-432d-8f86-c0b689b41164/sv-benchmarks/c/float-newlib/float_req_bl_0740.c[1930,1943] [2021-10-15 20:16:31,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:16:31,111 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:16:31,144 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_533cda76-d589-432d-8f86-c0b689b41164/sv-benchmarks/c/float-newlib/float_req_bl_0740.c[1930,1943] [2021-10-15 20:16:31,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:16:31,191 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:16:31,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:31 WrapperNode [2021-10-15 20:16:31,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:16:31,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:16:31,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:16:31,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:16:31,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:31" (1/1) ... [2021-10-15 20:16:31,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:31" (1/1) ... [2021-10-15 20:16:31,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:16:31,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:16:31,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:16:31,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:16:31,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:31" (1/1) ... [2021-10-15 20:16:31,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:31" (1/1) ... [2021-10-15 20:16:31,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:31" (1/1) ... [2021-10-15 20:16:31,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:31" (1/1) ... [2021-10-15 20:16:31,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:31" (1/1) ... [2021-10-15 20:16:31,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:31" (1/1) ... [2021-10-15 20:16:31,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:31" (1/1) ... [2021-10-15 20:16:31,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:16:31,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:16:31,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:16:31,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:16:31,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:31" (1/1) ... [2021-10-15 20:16:31,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:16:31,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:16:31,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:16:31,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:16:31,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 20:16:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:16:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-15 20:16:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 20:16:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:16:31,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:16:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-15 20:16:31,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 20:16:31,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 20:16:32,242 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:16:32,245 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-15 20:16:32,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:32 BoogieIcfgContainer [2021-10-15 20:16:32,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:16:32,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:16:32,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:16:32,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:16:32,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:16:30" (1/3) ... [2021-10-15 20:16:32,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30822623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:16:32, skipping insertion in model container [2021-10-15 20:16:32,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:31" (2/3) ... [2021-10-15 20:16:32,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30822623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:16:32, skipping insertion in model container [2021-10-15 20:16:32,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:32" (3/3) ... [2021-10-15 20:16:32,264 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0740.c [2021-10-15 20:16:32,271 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:16:32,272 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:16:32,358 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:16:32,371 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 20:16:32,372 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:16:32,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 50 transitions, 100 flow [2021-10-15 20:16:32,462 INFO L129 PetriNetUnfolder]: 18/50 cut-off events. [2021-10-15 20:16:32,464 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:32,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 50 events. 18/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-10-15 20:16:32,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 50 transitions, 100 flow [2021-10-15 20:16:32,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 46 transitions, 92 flow [2021-10-15 20:16:32,488 INFO L129 PetriNetUnfolder]: 5/19 cut-off events. [2021-10-15 20:16:32,491 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:32,491 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:32,492 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:32,493 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:32,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:32,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1903734416, now seen corresponding path program 1 times [2021-10-15 20:16:32,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:16:32,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365093318] [2021-10-15 20:16:32,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:32,518 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:16:32,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:16:32,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:16:32,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 20:16:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:32,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 20:16:32,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:16:32,880 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 20:16:32,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:16:32,937 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 20:16:32,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:16:32,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365093318] [2021-10-15 20:16:32,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365093318] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:32,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:32,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 20:16:32,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247158856] [2021-10-15 20:16:32,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:16:32,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:16:32,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:16:32,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:16:32,983 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 50 [2021-10-15 20:16:32,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 46 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 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 20:16:32,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:32,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 50 [2021-10-15 20:16:32,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:33,018 INFO L129 PetriNetUnfolder]: 11/40 cut-off events. [2021-10-15 20:16:33,018 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:33,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 40 events. 11/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 6/35 useless extension candidates. Maximal degree in co-relation 40. Up to 4 conditions per place. [2021-10-15 20:16:33,022 INFO L132 encePairwiseOnDemand]: 44/50 looper letters, 0 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2021-10-15 20:16:33,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 80 flow [2021-10-15 20:16:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:16:33,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 20:16:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2021-10-15 20:16:33,039 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.92 [2021-10-15 20:16:33,040 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 92 transitions. [2021-10-15 20:16:33,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 92 transitions. [2021-10-15 20:16:33,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:33,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 92 transitions. [2021-10-15 20:16:33,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 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 20:16:33,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 20:16:33,061 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 20:16:33,064 INFO L186 Difference]: Start difference. First operand has 30 places, 46 transitions, 92 flow. Second operand 2 states and 92 transitions. [2021-10-15 20:16:33,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 80 flow [2021-10-15 20:16:33,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 40 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:16:33,077 INFO L242 Difference]: Finished difference. Result has 31 places, 40 transitions, 80 flow [2021-10-15 20:16:33,080 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=31, PETRI_TRANSITIONS=40} [2021-10-15 20:16:33,081 INFO L334 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2021-10-15 20:16:33,081 INFO L470 AbstractCegarLoop]: Abstraction has has 31 places, 40 transitions, 80 flow [2021-10-15 20:16:33,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 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 20:16:33,083 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:33,083 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:33,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:16:33,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:16:33,310 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:33,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:33,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1484616397, now seen corresponding path program 1 times [2021-10-15 20:16:33,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:16:33,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39246480] [2021-10-15 20:16:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:33,312 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:16:33,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:16:33,317 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:16:33,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 20:16:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:33,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-15 20:16:33,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:16:33,987 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 20:16:33,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:16:53,173 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 20:16:53,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:16:53,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39246480] [2021-10-15 20:16:53,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39246480] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:53,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:53,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-15 20:16:53,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147339578] [2021-10-15 20:16:53,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 20:16:53,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:16:53,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 20:16:53,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=68, Unknown=1, NotChecked=0, Total=90 [2021-10-15 20:16:53,181 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 50 [2021-10-15 20:16:53,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 40 transitions, 80 flow. Second operand has 10 states, 10 states have (on average 31.4) internal successors, (314), 10 states have internal predecessors, (314), 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 20:16:53,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:53,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 50 [2021-10-15 20:16:53,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:54,660 INFO L129 PetriNetUnfolder]: 10/42 cut-off events. [2021-10-15 20:16:54,660 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:54,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 42 events. 10/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 1/37 useless extension candidates. Maximal degree in co-relation 56. Up to 9 conditions per place. [2021-10-15 20:16:54,661 INFO L132 encePairwiseOnDemand]: 43/50 looper letters, 8 selfloop transitions, 2 changer transitions 4/42 dead transitions. [2021-10-15 20:16:54,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 112 flow [2021-10-15 20:16:54,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 20:16:54,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 20:16:54,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2021-10-15 20:16:54,667 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2021-10-15 20:16:54,667 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 225 transitions. [2021-10-15 20:16:54,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 225 transitions. [2021-10-15 20:16:54,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:54,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 225 transitions. [2021-10-15 20:16:54,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.142857142857146) internal successors, (225), 7 states have internal predecessors, (225), 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 20:16:54,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 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 20:16:54,677 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 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 20:16:54,677 INFO L186 Difference]: Start difference. First operand has 31 places, 40 transitions, 80 flow. Second operand 7 states and 225 transitions. [2021-10-15 20:16:54,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 112 flow [2021-10-15 20:16:54,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 112 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:16:54,681 INFO L242 Difference]: Finished difference. Result has 40 places, 38 transitions, 86 flow [2021-10-15 20:16:54,682 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=86, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2021-10-15 20:16:54,683 INFO L334 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2021-10-15 20:16:54,683 INFO L470 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 86 flow [2021-10-15 20:16:54,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.4) internal successors, (314), 10 states have internal predecessors, (314), 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 20:16:54,684 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:54,684 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:54,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 20:16:54,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:16:54,903 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:16:54,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:54,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1245605874, now seen corresponding path program 1 times [2021-10-15 20:16:54,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:16:54,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515316568] [2021-10-15 20:16:54,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:54,906 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:16:54,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:16:54,911 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:16:54,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 20:16:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:55,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 20:16:55,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:16:55,454 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 20:16:55,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:16:55,709 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 20:16:55,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:16:55,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515316568] [2021-10-15 20:16:55,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515316568] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:55,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:55,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-15 20:16:55,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584587741] [2021-10-15 20:16:55,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 20:16:55,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:16:55,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 20:16:55,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-15 20:16:55,714 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2021-10-15 20:16:55,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 86 flow. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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 20:16:55,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:55,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2021-10-15 20:16:55,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:55,901 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-10-15 20:16:55,901 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:55,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 5 events. 0/5 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. 1/6 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-10-15 20:16:55,901 INFO L132 encePairwiseOnDemand]: 46/50 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2021-10-15 20:16:55,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 5 transitions, 20 flow [2021-10-15 20:16:55,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:16:55,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:16:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2021-10-15 20:16:55,904 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.416 [2021-10-15 20:16:55,904 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2021-10-15 20:16:55,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2021-10-15 20:16:55,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:55,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2021-10-15 20:16:55,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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 20:16:55,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 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 20:16:55,908 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 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 20:16:55,908 INFO L186 Difference]: Start difference. First operand has 40 places, 38 transitions, 86 flow. Second operand 5 states and 104 transitions. [2021-10-15 20:16:55,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 5 transitions, 20 flow [2021-10-15 20:16:55,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 5 transitions, 17 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:55,910 INFO L242 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2021-10-15 20:16:55,910 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=11, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2021-10-15 20:16:55,910 INFO L334 CegarLoopForPetriNet]: 30 programPoint places, -15 predicate places. [2021-10-15 20:16:55,911 INFO L470 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2021-10-15 20:16:55,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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 20:16:55,915 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:16:55,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-15 20:16:56,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:16:56,131 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:16:56,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:16:56 BoogieIcfgContainer [2021-10-15 20:16:56,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:16:56,137 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:16:56,138 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:16:56,138 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:16:56,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:32" (3/4) ... [2021-10-15 20:16:56,142 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 20:16:56,156 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-15 20:16:56,157 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-15 20:16:56,157 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:16:56,158 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:16:56,244 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:16:56,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:16:56,256 INFO L168 Benchmark]: Toolchain (without parser) took 25410.14 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 40.7 MB in the beginning and 55.5 MB in the end (delta: -14.8 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:56,257 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 60.8 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:16:56,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.33 ms. Allocated memory is still 60.8 MB. Free memory was 40.5 MB in the beginning and 44.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:56,259 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.71 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 42.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:56,259 INFO L168 Benchmark]: Boogie Preprocessor took 44.01 ms. Allocated memory is still 60.8 MB. Free memory was 42.3 MB in the beginning and 40.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:16:56,260 INFO L168 Benchmark]: RCFGBuilder took 940.57 ms. Allocated memory is still 60.8 MB. Free memory was 40.7 MB in the beginning and 28.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:56,261 INFO L168 Benchmark]: TraceAbstraction took 23883.77 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 27.4 MB in the beginning and 59.0 MB in the end (delta: -31.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:16:56,261 INFO L168 Benchmark]: Witness Printer took 116.71 ms. Allocated memory is still 83.9 MB. Free memory was 59.0 MB in the beginning and 55.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:16:56,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 60.8 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.33 ms. Allocated memory is still 60.8 MB. Free memory was 40.5 MB in the beginning and 44.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.71 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 42.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.01 ms. Allocated memory is still 60.8 MB. Free memory was 42.3 MB in the beginning and 40.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 940.57 ms. Allocated memory is still 60.8 MB. Free memory was 40.7 MB in the beginning and 28.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 23883.77 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 27.4 MB in the beginning and 59.0 MB in the end (delta: -31.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 116.71 ms. Allocated memory is still 83.9 MB. Free memory was 59.0 MB in the beginning and 55.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 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: 99]: 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, 33 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23783.8ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1814.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 97.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 21 SDslu, 13 SDs, 0 SdLazy, 62 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1232.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 14004.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=0, InterpolantAutomatonStates: 14, 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: 61.7ms SsaConstructionTime, 504.9ms SatisfiabilityAnalysisTime, 20331.6ms InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 54 ConstructedInterpolants, 5 QuantifiedInterpolants, 385 SizeOfPredicates, 17 NumberOfNonLiveVariables, 131 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 20:16:56,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_533cda76-d589-432d-8f86-c0b689b41164/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...