./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.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_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/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_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/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_61db3a14-b4ac-475e-90a1-687ac754e133/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 965a8d1f86759d0c7cab56eb22958b9f714cfb2b ................................................................................................................................................................................................................................................................................................................................ 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_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/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_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/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_61db3a14-b4ac-475e-90a1-687ac754e133/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 965a8d1f86759d0c7cab56eb22958b9f714cfb2b ........................................................................................................................................................................................................................................................................................................................................................................................................................ 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 19:37:50,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:37:50,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:37:50,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:37:50,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:37:50,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:37:50,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:37:50,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:37:50,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:37:50,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:37:50,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:37:50,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:37:50,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:37:50,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:37:50,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:37:50,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:37:50,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:37:50,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:37:50,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:37:50,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:37:50,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:37:50,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:37:50,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:37:50,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:37:50,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:37:50,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:37:50,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:37:50,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:37:50,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:37:50,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:37:50,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:37:50,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:37:50,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:37:50,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:37:50,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:37:50,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:37:50,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:37:50,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:37:50,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:37:50,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:37:50,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:37:50,976 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:37:51,012 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:37:51,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:37:51,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:37:51,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:37:51,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:37:51,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:37:51,018 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:37:51,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:37:51,019 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:37:51,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:37:51,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:37:51,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:37:51,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:37:51,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:37:51,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:37:51,020 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:37:51,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:37:51,020 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:37:51,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:37:51,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:37:51,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:37:51,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:37:51,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:37:51,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:37:51,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:37:51,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:37:51,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:37:51,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:37:51,022 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:37:51,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:37:51,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:37:51,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:37:51,022 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_61db3a14-b4ac-475e-90a1-687ac754e133/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2021-10-15 19:37:51,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:37:51,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:37:51,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:37:51,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:37:51,283 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:37:51,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2021-10-15 19:37:51,362 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/data/eee6ef4cd/04067ed4e9584dfd841f7a31fb21dd62/FLAG0bddacfd6 [2021-10-15 19:37:51,897 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:37:51,902 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2021-10-15 19:37:51,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/data/eee6ef4cd/04067ed4e9584dfd841f7a31fb21dd62/FLAG0bddacfd6 [2021-10-15 19:37:52,255 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/data/eee6ef4cd/04067ed4e9584dfd841f7a31fb21dd62 [2021-10-15 19:37:52,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:37:52,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:37:52,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:37:52,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:37:52,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:37:52,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:37:52" (1/1) ... [2021-10-15 19:37:52,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f17bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:52, skipping insertion in model container [2021-10-15 19:37:52,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:37:52" (1/1) ... [2021-10-15 19:37:52,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:37:52,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:37:52,551 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_61db3a14-b4ac-475e-90a1-687ac754e133/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c[2254,2267] [2021-10-15 19:37:52,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:37:52,564 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:37:52,601 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_61db3a14-b4ac-475e-90a1-687ac754e133/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c[2254,2267] [2021-10-15 19:37:52,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:37:52,621 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:37:52,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:52 WrapperNode [2021-10-15 19:37:52,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:37:52,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:37:52,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:37:52,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:37:52,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:52" (1/1) ... [2021-10-15 19:37:52,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:52" (1/1) ... [2021-10-15 19:37:52,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:37:52,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:37:52,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:37:52,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:37:52,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:52" (1/1) ... [2021-10-15 19:37:52,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:52" (1/1) ... [2021-10-15 19:37:52,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:52" (1/1) ... [2021-10-15 19:37:52,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:52" (1/1) ... [2021-10-15 19:37:52,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:52" (1/1) ... [2021-10-15 19:37:52,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:52" (1/1) ... [2021-10-15 19:37:52,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:52" (1/1) ... [2021-10-15 19:37:52,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:37:52,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:37:52,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:37:52,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:37:52,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:52" (1/1) ... [2021-10-15 19:37:52,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:37:52,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:37:52,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:37:52,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:37:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:37:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:37:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-15 19:37:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:37:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-15 19:37:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:37:52,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:37:52,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:37:52,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:37:53,277 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:37:53,277 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-15 19:37:53,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:37:53 BoogieIcfgContainer [2021-10-15 19:37:53,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:37:53,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:37:53,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:37:53,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:37:53,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:37:52" (1/3) ... [2021-10-15 19:37:53,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d68b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:37:53, skipping insertion in model container [2021-10-15 19:37:53,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:52" (2/3) ... [2021-10-15 19:37:53,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d68b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:37:53, skipping insertion in model container [2021-10-15 19:37:53,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:37:53" (3/3) ... [2021-10-15 19:37:53,291 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2021-10-15 19:37:53,298 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:37:53,298 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:37:53,369 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:37:53,390 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 19:37:53,391 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:37:53,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 41 transitions, 82 flow [2021-10-15 19:37:53,433 INFO L129 PetriNetUnfolder]: 15/41 cut-off events. [2021-10-15 19:37:53,434 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:37:53,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 41 events. 15/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-10-15 19:37:53,436 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 41 transitions, 82 flow [2021-10-15 19:37:53,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 37 transitions, 74 flow [2021-10-15 19:37:53,450 INFO L129 PetriNetUnfolder]: 14/36 cut-off events. [2021-10-15 19:37:53,451 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:37:53,451 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:37:53,452 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:37:53,452 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:37:53,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:37:53,459 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2021-10-15 19:37:53,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:37:53,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302685328] [2021-10-15 19:37:53,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:37:53,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:37:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:37:53,646 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 19:37:53,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:37:53,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302685328] [2021-10-15 19:37:53,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302685328] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:37:53,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:37:53,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:37:53,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352374274] [2021-10-15 19:37:53,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:37:53,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:37:53,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:37:53,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:37:53,699 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 41 [2021-10-15 19:37:53,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 37 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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 19:37:53,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:37:53,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 41 [2021-10-15 19:37:53,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:37:53,718 INFO L129 PetriNetUnfolder]: 4/27 cut-off events. [2021-10-15 19:37:53,718 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:37:53,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 29 event pairs, 0 based on Foata normal form. 10/33 useless extension candidates. Maximal degree in co-relation 27. Up to 4 conditions per place. [2021-10-15 19:37:53,721 INFO L132 encePairwiseOnDemand]: 31/41 looper letters, 0 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2021-10-15 19:37:53,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 54 flow [2021-10-15 19:37:53,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:37:53,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:37:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 70 transitions. [2021-10-15 19:37:53,734 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8536585365853658 [2021-10-15 19:37:53,735 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 70 transitions. [2021-10-15 19:37:53,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 70 transitions. [2021-10-15 19:37:53,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:37:53,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 70 transitions. [2021-10-15 19:37:53,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 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 19:37:53,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 19:37:53,746 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 19:37:53,749 INFO L186 Difference]: Start difference. First operand has 24 places, 37 transitions, 74 flow. Second operand 2 states and 70 transitions. [2021-10-15 19:37:53,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 54 flow [2021-10-15 19:37:53,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 54 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:37:53,754 INFO L242 Difference]: Finished difference. Result has 25 places, 27 transitions, 54 flow [2021-10-15 19:37:53,757 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=25, PETRI_TRANSITIONS=27} [2021-10-15 19:37:53,758 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2021-10-15 19:37:53,758 INFO L470 AbstractCegarLoop]: Abstraction has has 25 places, 27 transitions, 54 flow [2021-10-15 19:37:53,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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 19:37:53,758 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:37:53,759 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:37:53,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:37:53,759 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:37:53,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:37:53,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2021-10-15 19:37:53,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:37:53,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891970419] [2021-10-15 19:37:53,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:37:53,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:37:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:37:53,916 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:37:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:37:54,089 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:37:54,089 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:37:54,092 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:37:54,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:37:54,103 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:37:54,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:37:54 BoogieIcfgContainer [2021-10-15 19:37:54,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:37:54,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:37:54,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:37:54,164 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:37:54,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:37:53" (3/4) ... [2021-10-15 19:37:54,171 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:37:54,171 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:37:54,174 INFO L168 Benchmark]: Toolchain (without parser) took 1912.50 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 59.2 MB in the beginning and 94.1 MB in the end (delta: -34.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:37:54,175 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory was 46.6 MB in the beginning and 46.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:37:54,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.09 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 59.0 MB in the beginning and 96.1 MB in the end (delta: -37.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:37:54,181 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.56 ms. Allocated memory is still 121.6 MB. Free memory was 96.1 MB in the beginning and 94.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:37:54,187 INFO L168 Benchmark]: Boogie Preprocessor took 77.50 ms. Allocated memory is still 121.6 MB. Free memory was 94.2 MB in the beginning and 92.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:37:54,188 INFO L168 Benchmark]: RCFGBuilder took 514.11 ms. Allocated memory is still 121.6 MB. Free memory was 92.6 MB in the beginning and 79.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:37:54,189 INFO L168 Benchmark]: TraceAbstraction took 876.54 ms. Allocated memory is still 121.6 MB. Free memory was 79.0 MB in the beginning and 94.8 MB in the end (delta: -15.8 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:37:54,190 INFO L168 Benchmark]: Witness Printer took 7.72 ms. Allocated memory is still 121.6 MB. Free memory was 94.8 MB in the beginning and 94.1 MB in the end (delta: 688.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:37:54,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory was 46.6 MB in the beginning and 46.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 361.09 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 59.0 MB in the beginning and 96.1 MB in the end (delta: -37.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.56 ms. Allocated memory is still 121.6 MB. Free memory was 96.1 MB in the beginning and 94.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.50 ms. Allocated memory is still 121.6 MB. Free memory was 94.2 MB in the beginning and 92.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 514.11 ms. Allocated memory is still 121.6 MB. Free memory was 92.6 MB in the beginning and 79.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 876.54 ms. Allocated memory is still 121.6 MB. Free memory was 79.0 MB in the beginning and 94.8 MB in the end (delta: -15.8 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. * Witness Printer took 7.72 ms. Allocated memory is still 121.6 MB. Free memory was 94.8 MB in the beginning and 94.1 MB in the end (delta: 688.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 91]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = -1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L91] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 742.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 77.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 51.5ms, 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=74occurred 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: 17.2ms SsaConstructionTime, 172.5ms SatisfiabilityAnalysisTime, 59.2ms InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 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 19:37:54,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/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 19:37:57,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:37:57,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:37:57,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:37:57,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:37:57,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:37:57,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:37:57,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:37:57,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:37:57,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:37:57,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:37:57,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:37:57,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:37:57,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:37:57,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:37:57,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:37:57,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:37:57,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:37:57,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:37:57,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:37:57,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:37:57,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:37:57,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:37:57,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:37:57,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:37:57,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:37:57,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:37:57,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:37:57,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:37:57,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:37:57,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:37:57,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:37:57,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:37:57,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:37:57,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:37:57,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:37:57,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:37:57,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:37:57,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:37:57,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:37:57,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:37:57,205 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 19:37:57,252 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:37:57,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:37:57,253 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:37:57,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:37:57,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:37:57,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:37:57,256 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:37:57,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:37:57,257 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:37:57,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:37:57,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:37:57,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:37:57,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:37:57,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:37:57,260 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:37:57,260 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:37:57,260 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:37:57,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:37:57,261 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:37:57,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:37:57,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:37:57,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:37:57,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:37:57,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:37:57,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:37:57,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:37:57,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:37:57,263 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:37:57,263 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:37:57,263 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:37:57,264 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:37:57,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:37:57,264 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:37:57,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:37:57,265 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_61db3a14-b4ac-475e-90a1-687ac754e133/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2021-10-15 19:37:57,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:37:57,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:37:57,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:37:57,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:37:57,682 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:37:57,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2021-10-15 19:37:57,780 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/data/bde9c5b83/6a687ec12ffa443fb77152b5bbe517fe/FLAG6ba4109a2 [2021-10-15 19:37:58,388 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:37:58,389 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2021-10-15 19:37:58,398 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/data/bde9c5b83/6a687ec12ffa443fb77152b5bbe517fe/FLAG6ba4109a2 [2021-10-15 19:37:58,716 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/data/bde9c5b83/6a687ec12ffa443fb77152b5bbe517fe [2021-10-15 19:37:58,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:37:58,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:37:58,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:37:58,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:37:58,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:37:58,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:37:58" (1/1) ... [2021-10-15 19:37:58,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1186690b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:58, skipping insertion in model container [2021-10-15 19:37:58,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:37:58" (1/1) ... [2021-10-15 19:37:58,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:37:58,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:37:59,002 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_61db3a14-b4ac-475e-90a1-687ac754e133/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c[2254,2267] [2021-10-15 19:37:59,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:37:59,027 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:37:59,062 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_61db3a14-b4ac-475e-90a1-687ac754e133/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c[2254,2267] [2021-10-15 19:37:59,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:37:59,104 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:37:59,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:59 WrapperNode [2021-10-15 19:37:59,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:37:59,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:37:59,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:37:59,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:37:59,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:59" (1/1) ... [2021-10-15 19:37:59,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:59" (1/1) ... [2021-10-15 19:37:59,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:37:59,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:37:59,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:37:59,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:37:59,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:59" (1/1) ... [2021-10-15 19:37:59,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:59" (1/1) ... [2021-10-15 19:37:59,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:59" (1/1) ... [2021-10-15 19:37:59,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:59" (1/1) ... [2021-10-15 19:37:59,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:59" (1/1) ... [2021-10-15 19:37:59,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:59" (1/1) ... [2021-10-15 19:37:59,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:59" (1/1) ... [2021-10-15 19:37:59,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:37:59,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:37:59,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:37:59,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:37:59,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:59" (1/1) ... [2021-10-15 19:37:59,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:37:59,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:37:59,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:37:59,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:37:59,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-15 19:37:59,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-15 19:37:59,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:37:59,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:37:59,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 19:37:59,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:37:59,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:37:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 19:37:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:37:59,798 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:37:59,799 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-15 19:37:59,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:37:59 BoogieIcfgContainer [2021-10-15 19:37:59,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:37:59,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:37:59,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:37:59,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:37:59,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:37:58" (1/3) ... [2021-10-15 19:37:59,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45697841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:37:59, skipping insertion in model container [2021-10-15 19:37:59,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:37:59" (2/3) ... [2021-10-15 19:37:59,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45697841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:37:59, skipping insertion in model container [2021-10-15 19:37:59,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:37:59" (3/3) ... [2021-10-15 19:37:59,826 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2021-10-15 19:37:59,832 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:37:59,832 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:37:59,900 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:37:59,907 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 19:37:59,907 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:37:59,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 41 transitions, 82 flow [2021-10-15 19:37:59,961 INFO L129 PetriNetUnfolder]: 15/41 cut-off events. [2021-10-15 19:37:59,962 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:37:59,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 41 events. 15/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-10-15 19:37:59,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 41 transitions, 82 flow [2021-10-15 19:37:59,980 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 37 transitions, 74 flow [2021-10-15 19:37:59,993 INFO L129 PetriNetUnfolder]: 14/36 cut-off events. [2021-10-15 19:37:59,993 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:37:59,994 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:37:59,994 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:37:59,995 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:00,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:00,004 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2021-10-15 19:38:00,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:38:00,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153775145] [2021-10-15 19:38:00,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:00,020 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:38:00,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:38:00,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:38:00,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:38:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:00,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 19:38:00,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:38:00,361 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 19:38:00,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:38:00,432 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 19:38:00,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:38:00,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153775145] [2021-10-15 19:38:00,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153775145] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:00,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:00,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 19:38:00,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915250851] [2021-10-15 19:38:00,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:38:00,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:38:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:38:00,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:38:00,465 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 41 [2021-10-15 19:38:00,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 37 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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 19:38:00,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:00,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 41 [2021-10-15 19:38:00,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:38:00,482 INFO L129 PetriNetUnfolder]: 4/27 cut-off events. [2021-10-15 19:38:00,482 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:38:00,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 29 event pairs, 0 based on Foata normal form. 10/33 useless extension candidates. Maximal degree in co-relation 27. Up to 4 conditions per place. [2021-10-15 19:38:00,484 INFO L132 encePairwiseOnDemand]: 31/41 looper letters, 0 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2021-10-15 19:38:00,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 54 flow [2021-10-15 19:38:00,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:38:00,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:38:00,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 70 transitions. [2021-10-15 19:38:00,497 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8536585365853658 [2021-10-15 19:38:00,498 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 70 transitions. [2021-10-15 19:38:00,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 70 transitions. [2021-10-15 19:38:00,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:38:00,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 70 transitions. [2021-10-15 19:38:00,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 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 19:38:00,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 19:38:00,511 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 19:38:00,513 INFO L186 Difference]: Start difference. First operand has 24 places, 37 transitions, 74 flow. Second operand 2 states and 70 transitions. [2021-10-15 19:38:00,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 54 flow [2021-10-15 19:38:00,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 54 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:38:00,519 INFO L242 Difference]: Finished difference. Result has 25 places, 27 transitions, 54 flow [2021-10-15 19:38:00,521 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=25, PETRI_TRANSITIONS=27} [2021-10-15 19:38:00,522 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2021-10-15 19:38:00,522 INFO L470 AbstractCegarLoop]: Abstraction has has 25 places, 27 transitions, 54 flow [2021-10-15 19:38:00,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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 19:38:00,523 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:00,523 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:38:00,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:38:00,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:38:00,742 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:00,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:00,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2021-10-15 19:38:00,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:38:00,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375828876] [2021-10-15 19:38:00,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:00,748 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:38:00,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:38:00,750 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:38:00,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:38:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:00,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-15 19:38:00,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:38:01,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2021-10-15 19:38:01,618 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 19:38:01,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:38:01,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 89 [2021-10-15 19:38:06,761 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 19:38:06,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:38:06,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375828876] [2021-10-15 19:38:06,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375828876] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:06,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:06,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-15 19:38:06,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186341314] [2021-10-15 19:38:06,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-15 19:38:06,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:38:06,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-15 19:38:06,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-10-15 19:38:06,770 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2021-10-15 19:38:06,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 27 transitions, 54 flow. Second operand has 15 states, 15 states have (on average 17.2) internal successors, (258), 15 states have internal predecessors, (258), 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 19:38:06,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:06,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2021-10-15 19:38:06,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:38:08,054 INFO L129 PetriNetUnfolder]: 3/33 cut-off events. [2021-10-15 19:38:08,055 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:38:08,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 33 events. 3/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 0 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 51. Up to 10 conditions per place. [2021-10-15 19:38:08,055 INFO L132 encePairwiseOnDemand]: 29/41 looper letters, 7 selfloop transitions, 5 changer transitions 8/32 dead transitions. [2021-10-15 19:38:08,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 100 flow [2021-10-15 19:38:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:38:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 19:38:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2021-10-15 19:38:08,060 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.44173441734417346 [2021-10-15 19:38:08,060 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 163 transitions. [2021-10-15 19:38:08,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 163 transitions. [2021-10-15 19:38:08,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:38:08,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 163 transitions. [2021-10-15 19:38:08,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 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 19:38:08,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 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 19:38:08,067 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 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 19:38:08,067 INFO L186 Difference]: Start difference. First operand has 25 places, 27 transitions, 54 flow. Second operand 9 states and 163 transitions. [2021-10-15 19:38:08,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 100 flow [2021-10-15 19:38:08,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 100 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:38:08,071 INFO L242 Difference]: Finished difference. Result has 39 places, 24 transitions, 74 flow [2021-10-15 19:38:08,072 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=74, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2021-10-15 19:38:08,088 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 15 predicate places. [2021-10-15 19:38:08,088 INFO L470 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 74 flow [2021-10-15 19:38:08,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.2) internal successors, (258), 15 states have internal predecessors, (258), 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 19:38:08,090 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:08,090 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:38:08,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:38:08,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:38:08,299 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:08,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:08,305 INFO L82 PathProgramCache]: Analyzing trace with hash 2135587910, now seen corresponding path program 1 times [2021-10-15 19:38:08,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:38:08,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61977184] [2021-10-15 19:38:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:08,306 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:38:08,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:38:08,308 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:38:08,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:38:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:08,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 19:38:08,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:38:08,785 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 19:38:08,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:38:09,024 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 19:38:09,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:38:09,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61977184] [2021-10-15 19:38:09,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61977184] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:09,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:09,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-15 19:38:09,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821589110] [2021-10-15 19:38:09,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:38:09,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:38:09,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:38:09,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:38:09,028 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2021-10-15 19:38:09,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 24 transitions, 74 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 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 19:38:09,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:09,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2021-10-15 19:38:09,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:38:09,184 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-10-15 19:38:09,184 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:38:09,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 6 events. 0/6 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/7 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:38:09,185 INFO L132 encePairwiseOnDemand]: 36/41 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2021-10-15 19:38:09,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 6 transitions, 25 flow [2021-10-15 19:38:09,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:38:09,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:38:09,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2021-10-15 19:38:09,194 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3951219512195122 [2021-10-15 19:38:09,194 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 81 transitions. [2021-10-15 19:38:09,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 81 transitions. [2021-10-15 19:38:09,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:38:09,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 81 transitions. [2021-10-15 19:38:09,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 19:38:09,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 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 19:38:09,197 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 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 19:38:09,198 INFO L186 Difference]: Start difference. First operand has 39 places, 24 transitions, 74 flow. Second operand 5 states and 81 transitions. [2021-10-15 19:38:09,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 6 transitions, 25 flow [2021-10-15 19:38:09,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 6 transitions, 21 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:38:09,200 INFO L242 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2021-10-15 19:38:09,200 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2021-10-15 19:38:09,200 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, -6 predicate places. [2021-10-15 19:38:09,200 INFO L470 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2021-10-15 19:38:09,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 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 19:38:09,203 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:38:09,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:38:09,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:38:09,425 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:38:09,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:38:09 BoogieIcfgContainer [2021-10-15 19:38:09,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:38:09,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:38:09,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:38:09,431 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:38:09,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:37:59" (3/4) ... [2021-10-15 19:38:09,437 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:38:09,450 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-15 19:38:09,451 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-15 19:38:09,451 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 19:38:09,452 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:38:09,518 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:38:09,518 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:38:09,521 INFO L168 Benchmark]: Toolchain (without parser) took 10791.25 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 51.5 MB in the beginning and 46.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2021-10-15 19:38:09,521 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 54.5 MB. Free memory is still 35.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:38:09,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.82 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 55.5 MB in the end (delta: -4.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:38:09,523 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.52 ms. Allocated memory is still 71.3 MB. Free memory was 55.3 MB in the beginning and 53.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:38:09,524 INFO L168 Benchmark]: Boogie Preprocessor took 74.85 ms. Allocated memory is still 71.3 MB. Free memory was 53.5 MB in the beginning and 51.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:38:09,524 INFO L168 Benchmark]: RCFGBuilder took 510.85 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 38.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:38:09,525 INFO L168 Benchmark]: TraceAbstraction took 9627.12 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 38.0 MB in the beginning and 49.1 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:38:09,526 INFO L168 Benchmark]: Witness Printer took 87.59 ms. Allocated memory is still 90.2 MB. Free memory was 49.1 MB in the beginning and 46.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:38:09,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 54.5 MB. Free memory is still 35.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 397.82 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 55.5 MB in the end (delta: -4.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.52 ms. Allocated memory is still 71.3 MB. Free memory was 55.3 MB in the beginning and 53.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.85 ms. Allocated memory is still 71.3 MB. Free memory was 53.5 MB in the beginning and 51.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 510.85 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 38.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9627.12 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 38.0 MB in the beginning and 49.1 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * Witness Printer took 87.59 ms. Allocated memory is still 90.2 MB. Free memory was 49.1 MB in the beginning and 46.3 MB in the end (delta: 2.8 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: 91]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9527.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1548.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 73.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 31 SDslu, 59 SDs, 0 SdLazy, 77 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 904.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4042.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, InterpolantAutomatonStates: 16, 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: 54.2ms SsaConstructionTime, 336.8ms SatisfiabilityAnalysisTime, 6554.9ms InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 84 ConstructedInterpolants, 17 QuantifiedInterpolants, 1026 SizeOfPredicates, 21 NumberOfNonLiveVariables, 166 ConjunctsInSsa, 25 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 19:38:09,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61db3a14-b4ac-475e-90a1-687ac754e133/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...