./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.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_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/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_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/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_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/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 25467fd5d8ff64196ac518ed6ec4f0faa02813a6 ................................................................................................................................................................................................................................................................................................................................................... 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_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/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_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/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_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/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 25467fd5d8ff64196ac518ed6ec4f0faa02813a6 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:07:03,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:07:03,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:07:03,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:07:03,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:07:03,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:07:03,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:07:03,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:07:03,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:07:03,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:07:03,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:07:03,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:07:03,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:07:03,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:07:03,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:07:03,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:07:03,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:07:03,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:07:03,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:07:03,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:07:03,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:07:03,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:07:03,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:07:03,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:07:03,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:07:03,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:07:03,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:07:03,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:07:03,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:07:03,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:07:03,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:07:03,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:07:03,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:07:03,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:07:03,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:07:03,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:07:03,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:07:03,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:07:03,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:07:03,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:07:03,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:07:03,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:07:03,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:07:03,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:07:03,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:07:03,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:07:03,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:07:03,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:07:03,971 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:07:03,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:07:03,972 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:07:03,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:07:03,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:07:03,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:07:03,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:07:03,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:07:03,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:07:03,974 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:07:03,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:07:03,975 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:07:03,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:07:03,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:07:03,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:07:03,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:07:03,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:07:03,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:07:03,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:07:03,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:07:03,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:07:03,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:07:03,978 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:07:03,979 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:07:03,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:07:03,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:07:03,980 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_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25467fd5d8ff64196ac518ed6ec4f0faa02813a6 [2021-10-15 19:07:04,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:07:04,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:07:04,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:07:04,268 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:07:04,269 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:07:04,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2021-10-15 19:07:04,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/data/c4af77c84/76f654cbf0d045bb8421fa13698f9c63/FLAGd1ffd16a0 [2021-10-15 19:07:04,857 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:07:04,860 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2021-10-15 19:07:04,877 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/data/c4af77c84/76f654cbf0d045bb8421fa13698f9c63/FLAGd1ffd16a0 [2021-10-15 19:07:05,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/data/c4af77c84/76f654cbf0d045bb8421fa13698f9c63 [2021-10-15 19:07:05,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:07:05,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:07:05,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:07:05,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:07:05,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:07:05,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:07:05" (1/1) ... [2021-10-15 19:07:05,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64437db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:05, skipping insertion in model container [2021-10-15 19:07:05,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:07:05" (1/1) ... [2021-10-15 19:07:05,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:07:05,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:07:05,536 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_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2021-10-15 19:07:05,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:07:05,556 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:07:05,626 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_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2021-10-15 19:07:05,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:07:05,642 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:07:05,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:05 WrapperNode [2021-10-15 19:07:05,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:07:05,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:07:05,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:07:05,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:07:05,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:05" (1/1) ... [2021-10-15 19:07:05,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:05" (1/1) ... [2021-10-15 19:07:05,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:07:05,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:07:05,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:07:05,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:07:05,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:05" (1/1) ... [2021-10-15 19:07:05,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:05" (1/1) ... [2021-10-15 19:07:05,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:05" (1/1) ... [2021-10-15 19:07:05,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:05" (1/1) ... [2021-10-15 19:07:05,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:05" (1/1) ... [2021-10-15 19:07:05,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:05" (1/1) ... [2021-10-15 19:07:05,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:05" (1/1) ... [2021-10-15 19:07:05,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:07:05,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:07:05,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:07:05,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:07:05,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:05" (1/1) ... [2021-10-15 19:07:05,762 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:07:05,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:07:05,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:07:05,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:07:05,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:07:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:07:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-15 19:07:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:07:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-15 19:07:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:07:05,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:07:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:07:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:07:06,534 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:07:06,535 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-10-15 19:07:06,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:07:06 BoogieIcfgContainer [2021-10-15 19:07:06,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:07:06,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:07:06,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:07:06,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:07:06,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:07:05" (1/3) ... [2021-10-15 19:07:06,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0d8a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:07:06, skipping insertion in model container [2021-10-15 19:07:06,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:05" (2/3) ... [2021-10-15 19:07:06,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0d8a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:07:06, skipping insertion in model container [2021-10-15 19:07:06,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:07:06" (3/3) ... [2021-10-15 19:07:06,553 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1271b.c [2021-10-15 19:07:06,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:07:06,559 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:07:06,610 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:07:06,616 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 19:07:06,617 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:07:06,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 110 places, 184 transitions, 368 flow [2021-10-15 19:07:06,676 INFO L129 PetriNetUnfolder]: 75/184 cut-off events. [2021-10-15 19:07:06,676 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:07:06,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 184 events. 75/184 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 359 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 19:07:06,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 184 transitions, 368 flow [2021-10-15 19:07:06,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 178 transitions, 356 flow [2021-10-15 19:07:06,694 INFO L129 PetriNetUnfolder]: 17/53 cut-off events. [2021-10-15 19:07:06,694 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:07:06,694 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:07:06,695 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:07:06,696 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:07:06,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:07:06,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1113208416, now seen corresponding path program 1 times [2021-10-15 19:07:06,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:07:06,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560486802] [2021-10-15 19:07:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:07:06,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:07:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:07:06,857 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 19:07:06,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:07:06,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560486802] [2021-10-15 19:07:06,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560486802] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:07:06,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:07:06,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:07:06,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233792040] [2021-10-15 19:07:06,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:07:06,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:07:06,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:07:06,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:07:06,889 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 184 [2021-10-15 19:07:06,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 178 transitions, 356 flow. Second operand has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 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 19:07:06,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:07:06,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 184 [2021-10-15 19:07:06,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:07:06,921 INFO L129 PetriNetUnfolder]: 33/138 cut-off events. [2021-10-15 19:07:06,921 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:07:06,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 138 events. 33/138 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 273 event pairs, 0 based on Foata normal form. 40/145 useless extension candidates. Maximal degree in co-relation 138. Up to 5 conditions per place. [2021-10-15 19:07:06,924 INFO L132 encePairwiseOnDemand]: 144/184 looper letters, 0 selfloop transitions, 0 changer transitions 0/138 dead transitions. [2021-10-15 19:07:06,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 138 transitions, 276 flow [2021-10-15 19:07:06,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:07:06,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:07:06,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 326 transitions. [2021-10-15 19:07:06,940 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8858695652173914 [2021-10-15 19:07:06,940 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 326 transitions. [2021-10-15 19:07:06,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 326 transitions. [2021-10-15 19:07:06,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:07:06,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 326 transitions. [2021-10-15 19:07:06,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 163.0) internal successors, (326), 2 states have internal predecessors, (326), 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 19:07:06,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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 19:07:06,958 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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 19:07:06,961 INFO L186 Difference]: Start difference. First operand has 106 places, 178 transitions, 356 flow. Second operand 2 states and 326 transitions. [2021-10-15 19:07:06,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 138 transitions, 276 flow [2021-10-15 19:07:06,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 138 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:07:06,971 INFO L242 Difference]: Finished difference. Result has 107 places, 138 transitions, 276 flow [2021-10-15 19:07:06,973 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=276, PETRI_PLACES=107, PETRI_TRANSITIONS=138} [2021-10-15 19:07:06,974 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, 1 predicate places. [2021-10-15 19:07:06,975 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 138 transitions, 276 flow [2021-10-15 19:07:06,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 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 19:07:06,975 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:07:06,976 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:07:06,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:07:06,976 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:07:06,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:07:06,977 INFO L82 PathProgramCache]: Analyzing trace with hash -339441203, now seen corresponding path program 1 times [2021-10-15 19:07:06,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:07:06,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234446172] [2021-10-15 19:07:06,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:07:06,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:07:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:07:07,138 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:07:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:07:07,285 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:07:07,286 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:07:07,288 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:07:07,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:07:07,298 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:07:07,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:07:07 BoogieIcfgContainer [2021-10-15 19:07:07,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:07:07,341 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:07:07,342 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:07:07,342 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:07:07,342 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:07:06" (3/4) ... [2021-10-15 19:07:07,346 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:07:07,346 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:07:07,348 INFO L168 Benchmark]: Toolchain (without parser) took 2155.11 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 87.5 MB in the beginning and 107.7 MB in the end (delta: -20.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:07:07,349 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 117.4 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:07:07,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.52 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 87.1 MB in the beginning and 113.9 MB in the end (delta: -26.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:07:07,350 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.67 ms. Allocated memory is still 142.6 MB. Free memory was 113.9 MB in the beginning and 111.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:07:07,351 INFO L168 Benchmark]: Boogie Preprocessor took 51.63 ms. Allocated memory is still 142.6 MB. Free memory was 111.2 MB in the beginning and 108.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:07:07,352 INFO L168 Benchmark]: RCFGBuilder took 784.42 ms. Allocated memory is still 142.6 MB. Free memory was 108.2 MB in the beginning and 84.5 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:07:07,353 INFO L168 Benchmark]: TraceAbstraction took 801.99 ms. Allocated memory is still 142.6 MB. Free memory was 83.9 MB in the beginning and 108.2 MB in the end (delta: -24.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:07:07,353 INFO L168 Benchmark]: Witness Printer took 4.65 ms. Allocated memory is still 142.6 MB. Free memory was 108.2 MB in the beginning and 107.7 MB in the end (delta: 455.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:07:07,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 117.4 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 447.52 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 87.1 MB in the beginning and 113.9 MB in the end (delta: -26.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.67 ms. Allocated memory is still 142.6 MB. Free memory was 113.9 MB in the beginning and 111.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.63 ms. Allocated memory is still 142.6 MB. Free memory was 111.2 MB in the beginning and 108.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 784.42 ms. Allocated memory is still 142.6 MB. Free memory was 108.2 MB in the beginning and 84.5 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 801.99 ms. Allocated memory is still 142.6 MB. Free memory was 83.9 MB in the beginning and 108.2 MB in the end (delta: -24.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.65 ms. Allocated memory is still 142.6 MB. Free memory was 108.2 MB in the beginning and 107.7 MB in the end (delta: 455.6 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: 241]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 213, overapproximation of someBinaryArithmeticFLOAToperation at line 120, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L234] float x = __VERIFIER_nondet_float(); [L235] float y = 0.0f / 0.0f; [L217] __int32_t ix; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L219] ieee_float_shape_type gf_u; [L220] gf_u.value = (x) [L221] EXPR gf_u.word [L221] (ix) = gf_u.word [L223] ix &= 0x7fffffff [L224] return (((ix) < 0x7f800000L)); VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L237] COND TRUE isfinite_float(x) [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L88] ieee_float_shape_type gf_u; [L89] gf_u.value = (x) [L90] EXPR gf_u.word [L90] (ha) = gf_u.word [L92] ha &= 0x7fffffffL VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L94] ieee_float_shape_type gf_u; [L95] gf_u.value = (y) [L96] EXPR gf_u.word [L96] (hb) = gf_u.word [L98] hb &= 0x7fffffffL VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L99] COND FALSE !(hb > ha) [L106] a = x [L107] b = y VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L110] ieee_float_shape_type sf_u; [L111] sf_u.word = (ha) [L112] EXPR sf_u.value [L112] (a) = sf_u.value [L115] ieee_float_shape_type sf_u; [L116] sf_u.word = (hb) [L117] EXPR sf_u.value [L117] (b) = sf_u.value [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L238] float res = __ieee754_hypotf(x, y); [L213] return x != x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L240] COND TRUE !isnan_float(res) [L241] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 110 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 690.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 92.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 70.0ms, 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=356occurred 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: 13.9ms SsaConstructionTime, 174.6ms SatisfiabilityAnalysisTime, 49.3ms InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 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 19:07:07,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/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 19:07:09,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:07:09,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:07:09,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:07:09,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:07:09,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:07:09,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:07:09,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:07:09,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:07:09,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:07:09,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:07:09,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:07:09,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:07:09,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:07:09,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:07:09,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:07:09,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:07:09,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:07:09,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:07:09,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:07:09,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:07:09,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:07:09,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:07:09,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:07:09,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:07:09,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:07:09,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:07:09,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:07:09,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:07:09,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:07:09,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:07:09,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:07:09,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:07:09,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:07:09,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:07:09,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:07:10,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:07:10,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:07:10,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:07:10,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:07:10,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:07:10,016 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 19:07:10,067 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:07:10,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:07:10,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:07:10,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:07:10,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:07:10,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:07:10,071 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:07:10,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:07:10,072 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:07:10,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:07:10,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:07:10,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:07:10,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:07:10,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:07:10,074 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:07:10,074 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:07:10,075 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:07:10,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:07:10,075 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:07:10,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:07:10,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:07:10,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:07:10,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:07:10,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:07:10,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:07:10,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:07:10,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:07:10,077 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:07:10,078 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:07:10,078 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:07:10,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:07:10,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:07:10,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:07:10,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:07:10,079 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_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25467fd5d8ff64196ac518ed6ec4f0faa02813a6 [2021-10-15 19:07:10,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:07:10,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:07:10,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:07:10,490 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:07:10,491 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:07:10,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2021-10-15 19:07:10,574 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/data/f9db6b038/a35c4a039ab14694b7cd39c575538194/FLAG58c03e49b [2021-10-15 19:07:11,279 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:07:11,280 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2021-10-15 19:07:11,288 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/data/f9db6b038/a35c4a039ab14694b7cd39c575538194/FLAG58c03e49b [2021-10-15 19:07:11,632 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/data/f9db6b038/a35c4a039ab14694b7cd39c575538194 [2021-10-15 19:07:11,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:07:11,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:07:11,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:07:11,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:07:11,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:07:11,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:07:11" (1/1) ... [2021-10-15 19:07:11,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fce4b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:11, skipping insertion in model container [2021-10-15 19:07:11,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:07:11" (1/1) ... [2021-10-15 19:07:11,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:07:11,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:07:11,947 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_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2021-10-15 19:07:11,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:07:11,963 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:07:12,026 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_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2021-10-15 19:07:12,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:07:12,044 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:07:12,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:12 WrapperNode [2021-10-15 19:07:12,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:07:12,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:07:12,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:07:12,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:07:12,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:12" (1/1) ... [2021-10-15 19:07:12,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:12" (1/1) ... [2021-10-15 19:07:12,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:07:12,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:07:12,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:07:12,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:07:12,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:12" (1/1) ... [2021-10-15 19:07:12,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:12" (1/1) ... [2021-10-15 19:07:12,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:12" (1/1) ... [2021-10-15 19:07:12,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:12" (1/1) ... [2021-10-15 19:07:12,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:12" (1/1) ... [2021-10-15 19:07:12,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:12" (1/1) ... [2021-10-15 19:07:12,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:12" (1/1) ... [2021-10-15 19:07:12,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:07:12,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:07:12,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:07:12,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:07:12,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:12" (1/1) ... [2021-10-15 19:07:12,245 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:07:12,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:07:12,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:07:12,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:07:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:07:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:07:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-15 19:07:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 19:07:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:07:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:07:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-15 19:07:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 19:07:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:07:20,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:07:20,333 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-10-15 19:07:20,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:07:20 BoogieIcfgContainer [2021-10-15 19:07:20,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:07:20,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:07:20,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:07:20,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:07:20,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:07:11" (1/3) ... [2021-10-15 19:07:20,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db9fe50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:07:20, skipping insertion in model container [2021-10-15 19:07:20,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:07:12" (2/3) ... [2021-10-15 19:07:20,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db9fe50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:07:20, skipping insertion in model container [2021-10-15 19:07:20,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:07:20" (3/3) ... [2021-10-15 19:07:20,344 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1271b.c [2021-10-15 19:07:20,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:07:20,350 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:07:20,402 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:07:20,408 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 19:07:20,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:07:20,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 110 places, 184 transitions, 368 flow [2021-10-15 19:07:20,537 INFO L129 PetriNetUnfolder]: 75/184 cut-off events. [2021-10-15 19:07:20,537 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:07:20,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 184 events. 75/184 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 359 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 19:07:20,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 184 transitions, 368 flow [2021-10-15 19:07:20,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 178 transitions, 356 flow [2021-10-15 19:07:20,566 INFO L129 PetriNetUnfolder]: 17/53 cut-off events. [2021-10-15 19:07:20,567 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:07:20,567 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:07:20,568 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:07:20,568 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:07:20,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:07:20,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1113208416, now seen corresponding path program 1 times [2021-10-15 19:07:20,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:07:20,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469768598] [2021-10-15 19:07:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:07:20,587 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:07:20,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:07:20,590 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:07:20,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:07:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:07:20,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 19:07:20,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:07:20,916 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 19:07:20,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:07:21,027 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 19:07:21,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:07:21,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469768598] [2021-10-15 19:07:21,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469768598] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:07:21,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:07:21,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 19:07:21,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903144598] [2021-10-15 19:07:21,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:07:21,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:07:21,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:07:21,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:07:21,056 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 184 [2021-10-15 19:07:21,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 178 transitions, 356 flow. Second operand has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 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 19:07:21,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:07:21,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 184 [2021-10-15 19:07:21,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:07:21,120 INFO L129 PetriNetUnfolder]: 33/138 cut-off events. [2021-10-15 19:07:21,122 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:07:21,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 138 events. 33/138 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 273 event pairs, 0 based on Foata normal form. 40/145 useless extension candidates. Maximal degree in co-relation 138. Up to 5 conditions per place. [2021-10-15 19:07:21,126 INFO L132 encePairwiseOnDemand]: 144/184 looper letters, 0 selfloop transitions, 0 changer transitions 0/138 dead transitions. [2021-10-15 19:07:21,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 138 transitions, 276 flow [2021-10-15 19:07:21,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:07:21,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:07:21,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 326 transitions. [2021-10-15 19:07:21,146 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8858695652173914 [2021-10-15 19:07:21,147 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 326 transitions. [2021-10-15 19:07:21,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 326 transitions. [2021-10-15 19:07:21,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:07:21,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 326 transitions. [2021-10-15 19:07:21,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 163.0) internal successors, (326), 2 states have internal predecessors, (326), 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 19:07:21,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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 19:07:21,172 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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 19:07:21,174 INFO L186 Difference]: Start difference. First operand has 106 places, 178 transitions, 356 flow. Second operand 2 states and 326 transitions. [2021-10-15 19:07:21,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 138 transitions, 276 flow [2021-10-15 19:07:21,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 138 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:07:21,192 INFO L242 Difference]: Finished difference. Result has 107 places, 138 transitions, 276 flow [2021-10-15 19:07:21,195 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=276, PETRI_PLACES=107, PETRI_TRANSITIONS=138} [2021-10-15 19:07:21,196 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, 1 predicate places. [2021-10-15 19:07:21,196 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 138 transitions, 276 flow [2021-10-15 19:07:21,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 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 19:07:21,197 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:07:21,197 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:07:21,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:07:21,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:07:21,411 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:07:21,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:07:21,412 INFO L82 PathProgramCache]: Analyzing trace with hash -339441203, now seen corresponding path program 1 times [2021-10-15 19:07:21,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:07:21,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044874084] [2021-10-15 19:07:21,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:07:21,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:07:21,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:07:21,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:07:21,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:07:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:07:21,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 19:07:21,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:07:22,563 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 19:07:22,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:07:23,921 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 19:07:23,921 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:07:23,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044874084] [2021-10-15 19:07:23,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044874084] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:07:23,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:07:23,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-15 19:07:23,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852336219] [2021-10-15 19:07:23,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-15 19:07:23,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:07:23,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-15 19:07:23,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-15 19:07:23,936 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 184 [2021-10-15 19:07:23,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 138 transitions, 276 flow. Second operand has 12 states, 12 states have (on average 111.66666666666667) internal successors, (1340), 12 states have internal predecessors, (1340), 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 19:07:23,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:07:23,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 184 [2021-10-15 19:07:23,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:07:26,926 INFO L129 PetriNetUnfolder]: 133/543 cut-off events. [2021-10-15 19:07:26,927 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:07:26,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 543 events. 133/543 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2669 event pairs, 0 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 613. Up to 20 conditions per place. [2021-10-15 19:07:26,937 INFO L132 encePairwiseOnDemand]: 170/184 looper letters, 54 selfloop transitions, 16 changer transitions 0/175 dead transitions. [2021-10-15 19:07:26,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 175 transitions, 490 flow [2021-10-15 19:07:26,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 19:07:26,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-15 19:07:26,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1283 transitions. [2021-10-15 19:07:26,944 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.633893280632411 [2021-10-15 19:07:26,944 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1283 transitions. [2021-10-15 19:07:26,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1283 transitions. [2021-10-15 19:07:26,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:07:26,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1283 transitions. [2021-10-15 19:07:26,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 116.63636363636364) internal successors, (1283), 11 states have internal predecessors, (1283), 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 19:07:26,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 184.0) internal successors, (2208), 12 states have internal predecessors, (2208), 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 19:07:26,961 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 184.0) internal successors, (2208), 12 states have internal predecessors, (2208), 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 19:07:26,962 INFO L186 Difference]: Start difference. First operand has 107 places, 138 transitions, 276 flow. Second operand 11 states and 1283 transitions. [2021-10-15 19:07:26,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 175 transitions, 490 flow [2021-10-15 19:07:26,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 175 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:07:26,976 INFO L242 Difference]: Finished difference. Result has 121 places, 146 transitions, 356 flow [2021-10-15 19:07:26,977 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=356, PETRI_PLACES=121, PETRI_TRANSITIONS=146} [2021-10-15 19:07:26,977 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, 15 predicate places. [2021-10-15 19:07:26,977 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 146 transitions, 356 flow [2021-10-15 19:07:26,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 111.66666666666667) internal successors, (1340), 12 states have internal predecessors, (1340), 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 19:07:26,979 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:07:26,979 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:07:26,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:07:27,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:07:27,192 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:07:27,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:07:27,193 INFO L82 PathProgramCache]: Analyzing trace with hash 53585807, now seen corresponding path program 1 times [2021-10-15 19:07:27,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:07:27,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070524753] [2021-10-15 19:07:27,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:07:27,194 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:07:27,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:07:27,195 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:07:27,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:07:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:07:27,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-15 19:07:27,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:07:27,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-10-15 19:07:28,079 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 52 treesize of output 28 [2021-10-15 19:07:29,056 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 19:07:29,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:07:48,404 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 19:07:48,404 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:07:48,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070524753] [2021-10-15 19:07:48,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070524753] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:07:48,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:07:48,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 20 [2021-10-15 19:07:48,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291168913] [2021-10-15 19:07:48,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-15 19:07:48,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:07:48,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-15 19:07:48,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-10-15 19:07:48,411 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 184 [2021-10-15 19:07:48,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 146 transitions, 356 flow. Second operand has 20 states, 20 states have (on average 82.5) internal successors, (1650), 20 states have internal predecessors, (1650), 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 19:07:48,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:07:48,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 184 [2021-10-15 19:07:48,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:08:36,298 INFO L129 PetriNetUnfolder]: 126/558 cut-off events. [2021-10-15 19:08:36,298 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-10-15 19:08:36,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 558 events. 126/558 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2905 event pairs, 0 based on Foata normal form. 2/488 useless extension candidates. Maximal degree in co-relation 807. Up to 101 conditions per place. [2021-10-15 19:08:36,303 INFO L132 encePairwiseOnDemand]: 160/184 looper letters, 82 selfloop transitions, 24 changer transitions 4/187 dead transitions. [2021-10-15 19:08:36,303 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 187 transitions, 664 flow [2021-10-15 19:08:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-15 19:08:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-15 19:08:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1487 transitions. [2021-10-15 19:08:36,310 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.47538363171355497 [2021-10-15 19:08:36,310 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1487 transitions. [2021-10-15 19:08:36,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1487 transitions. [2021-10-15 19:08:36,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:08:36,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1487 transitions. [2021-10-15 19:08:36,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 87.47058823529412) internal successors, (1487), 17 states have internal predecessors, (1487), 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 19:08:36,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 184.0) internal successors, (3312), 18 states have internal predecessors, (3312), 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 19:08:36,341 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 184.0) internal successors, (3312), 18 states have internal predecessors, (3312), 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 19:08:36,341 INFO L186 Difference]: Start difference. First operand has 121 places, 146 transitions, 356 flow. Second operand 17 states and 1487 transitions. [2021-10-15 19:08:36,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 187 transitions, 664 flow [2021-10-15 19:08:36,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 187 transitions, 657 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-15 19:08:36,356 INFO L242 Difference]: Finished difference. Result has 140 places, 153 transitions, 439 flow [2021-10-15 19:08:36,356 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=439, PETRI_PLACES=140, PETRI_TRANSITIONS=153} [2021-10-15 19:08:36,357 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, 34 predicate places. [2021-10-15 19:08:36,357 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 153 transitions, 439 flow [2021-10-15 19:08:36,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 82.5) internal successors, (1650), 20 states have internal predecessors, (1650), 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 19:08:36,358 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:08:36,358 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:08:36,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-15 19:08:36,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:08:36,573 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:08:36,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:08:36,574 INFO L82 PathProgramCache]: Analyzing trace with hash -305501778, now seen corresponding path program 1 times [2021-10-15 19:08:36,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:08:36,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942983269] [2021-10-15 19:08:36,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:08:36,575 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:08:36,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:08:36,577 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:08:36,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 19:08:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:08:36,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-15 19:08:36,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:08:41,096 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 19:08:41,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:08:46,814 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 19:08:46,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:08:46,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942983269] [2021-10-15 19:08:46,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942983269] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:08:46,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:08:46,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 8] imperfect sequences [] total 18 [2021-10-15 19:08:46,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172284280] [2021-10-15 19:08:46,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-15 19:08:46,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:08:46,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-15 19:08:46,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=253, Unknown=2, NotChecked=0, Total=306 [2021-10-15 19:08:46,820 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 184 [2021-10-15 19:08:46,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 153 transitions, 439 flow. Second operand has 18 states, 18 states have (on average 87.11111111111111) internal successors, (1568), 18 states have internal predecessors, (1568), 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 19:08:46,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:08:46,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 184 [2021-10-15 19:08:46,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:09:12,584 WARN L207 SmtUtils]: Spent 7.05 s on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2021-10-15 19:09:23,190 WARN L207 SmtUtils]: Spent 7.57 s on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-10-15 19:09:36,814 INFO L129 PetriNetUnfolder]: 128/572 cut-off events. [2021-10-15 19:09:36,814 INFO L130 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2021-10-15 19:09:36,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 572 events. 128/572 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3046 event pairs, 0 based on Foata normal form. 2/495 useless extension candidates. Maximal degree in co-relation 892. Up to 90 conditions per place. [2021-10-15 19:09:36,819 INFO L132 encePairwiseOnDemand]: 162/184 looper letters, 69 selfloop transitions, 35 changer transitions 4/189 dead transitions. [2021-10-15 19:09:36,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 189 transitions, 765 flow [2021-10-15 19:09:36,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-15 19:09:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-15 19:09:36,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1454 transitions. [2021-10-15 19:09:36,837 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4938858695652174 [2021-10-15 19:09:36,837 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1454 transitions. [2021-10-15 19:09:36,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1454 transitions. [2021-10-15 19:09:36,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:09:36,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1454 transitions. [2021-10-15 19:09:36,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 90.875) internal successors, (1454), 16 states have internal predecessors, (1454), 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 19:09:36,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 184.0) internal successors, (3128), 17 states have internal predecessors, (3128), 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 19:09:36,851 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 184.0) internal successors, (3128), 17 states have internal predecessors, (3128), 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 19:09:36,852 INFO L186 Difference]: Start difference. First operand has 140 places, 153 transitions, 439 flow. Second operand 16 states and 1454 transitions. [2021-10-15 19:09:36,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 189 transitions, 765 flow [2021-10-15 19:09:36,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 189 transitions, 715 flow, removed 13 selfloop flow, removed 9 redundant places. [2021-10-15 19:09:36,860 INFO L242 Difference]: Finished difference. Result has 148 places, 159 transitions, 522 flow [2021-10-15 19:09:36,861 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=522, PETRI_PLACES=148, PETRI_TRANSITIONS=159} [2021-10-15 19:09:36,861 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, 42 predicate places. [2021-10-15 19:09:36,861 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 159 transitions, 522 flow [2021-10-15 19:09:36,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 87.11111111111111) internal successors, (1568), 18 states have internal predecessors, (1568), 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 19:09:36,863 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:09:36,863 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:09:36,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:09:37,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:09:37,076 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:09:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:09:37,077 INFO L82 PathProgramCache]: Analyzing trace with hash -362760080, now seen corresponding path program 1 times [2021-10-15 19:09:37,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:09:37,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678971103] [2021-10-15 19:09:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:09:37,078 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:09:37,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:09:37,079 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:09:37,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-15 19:09:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:09:37,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-15 19:09:37,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:09:37,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-15 19:09:37,753 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 37 treesize of output 21 [2021-10-15 19:09:39,053 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 19:09:39,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:09:40,345 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 19:09:40,345 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:09:40,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678971103] [2021-10-15 19:09:40,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678971103] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:09:40,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:09:40,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-15 19:09:40,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884495173] [2021-10-15 19:09:40,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-15 19:09:40,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:09:40,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-15 19:09:40,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-10-15 19:09:40,350 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 184 [2021-10-15 19:09:40,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 159 transitions, 522 flow. Second operand has 18 states, 18 states have (on average 100.94444444444444) internal successors, (1817), 18 states have internal predecessors, (1817), 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 19:09:40,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:09:40,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 184 [2021-10-15 19:09:40,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:09:48,579 INFO L129 PetriNetUnfolder]: 194/809 cut-off events. [2021-10-15 19:09:48,579 INFO L130 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2021-10-15 19:09:48,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 809 events. 194/809 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4760 event pairs, 0 based on Foata normal form. 2/627 useless extension candidates. Maximal degree in co-relation 1085. Up to 32 conditions per place. [2021-10-15 19:09:48,587 INFO L132 encePairwiseOnDemand]: 166/184 looper letters, 81 selfloop transitions, 19 changer transitions 2/207 dead transitions. [2021-10-15 19:09:48,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 207 transitions, 842 flow [2021-10-15 19:09:48,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-15 19:09:48,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-15 19:09:48,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1786 transitions. [2021-10-15 19:09:48,595 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5709718670076727 [2021-10-15 19:09:48,596 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1786 transitions. [2021-10-15 19:09:48,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1786 transitions. [2021-10-15 19:09:48,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:09:48,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1786 transitions. [2021-10-15 19:09:48,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 105.05882352941177) internal successors, (1786), 17 states have internal predecessors, (1786), 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 19:09:48,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 184.0) internal successors, (3312), 18 states have internal predecessors, (3312), 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 19:09:48,614 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 184.0) internal successors, (3312), 18 states have internal predecessors, (3312), 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 19:09:48,615 INFO L186 Difference]: Start difference. First operand has 148 places, 159 transitions, 522 flow. Second operand 17 states and 1786 transitions. [2021-10-15 19:09:48,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 207 transitions, 842 flow [2021-10-15 19:09:48,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 207 transitions, 793 flow, removed 5 selfloop flow, removed 12 redundant places. [2021-10-15 19:09:48,623 INFO L242 Difference]: Finished difference. Result has 150 places, 157 transitions, 511 flow [2021-10-15 19:09:48,624 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=511, PETRI_PLACES=150, PETRI_TRANSITIONS=157} [2021-10-15 19:09:48,624 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, 44 predicate places. [2021-10-15 19:09:48,624 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 157 transitions, 511 flow [2021-10-15 19:09:48,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 100.94444444444444) internal successors, (1817), 18 states have internal predecessors, (1817), 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 19:09:48,625 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:09:48,625 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:09:48,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-15 19:09:48,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:09:48,826 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:09:48,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:09:48,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1241082002, now seen corresponding path program 1 times [2021-10-15 19:09:48,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:09:48,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547854432] [2021-10-15 19:09:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:09:48,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:09:48,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:09:48,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:09:48,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-15 19:09:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:09:49,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 19:09:49,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:09:50,233 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 19:09:50,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:09:50,524 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 19:09:50,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:09:50,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547854432] [2021-10-15 19:09:50,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547854432] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:09:50,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:09:50,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 10 [2021-10-15 19:09:50,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625109792] [2021-10-15 19:09:50,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 19:09:50,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:09:50,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 19:09:50,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-15 19:09:50,528 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 184 [2021-10-15 19:09:50,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 157 transitions, 511 flow. Second operand has 10 states, 10 states have (on average 113.8) internal successors, (1138), 10 states have internal predecessors, (1138), 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 19:09:50,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:09:50,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 184 [2021-10-15 19:09:50,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:09:53,651 INFO L129 PetriNetUnfolder]: 144/600 cut-off events. [2021-10-15 19:09:53,651 INFO L130 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2021-10-15 19:09:53,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 600 events. 144/600 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3226 event pairs, 0 based on Foata normal form. 2/464 useless extension candidates. Maximal degree in co-relation 745. Up to 24 conditions per place. [2021-10-15 19:09:53,654 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 29 selfloop transitions, 12 changer transitions 0/154 dead transitions. [2021-10-15 19:09:53,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 154 transitions, 554 flow [2021-10-15 19:09:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:09:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 19:09:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1143 transitions. [2021-10-15 19:09:53,662 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.621195652173913 [2021-10-15 19:09:53,662 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1143 transitions. [2021-10-15 19:09:53,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1143 transitions. [2021-10-15 19:09:53,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:09:53,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1143 transitions. [2021-10-15 19:09:53,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.3) internal successors, (1143), 10 states have internal predecessors, (1143), 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 19:09:53,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 184.0) internal successors, (2024), 11 states have internal predecessors, (2024), 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 19:09:53,674 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 184.0) internal successors, (2024), 11 states have internal predecessors, (2024), 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 19:09:53,674 INFO L186 Difference]: Start difference. First operand has 150 places, 157 transitions, 511 flow. Second operand 10 states and 1143 transitions. [2021-10-15 19:09:53,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 154 transitions, 554 flow [2021-10-15 19:09:53,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 154 transitions, 519 flow, removed 0 selfloop flow, removed 14 redundant places. [2021-10-15 19:09:53,680 INFO L242 Difference]: Finished difference. Result has 142 places, 148 transitions, 445 flow [2021-10-15 19:09:53,681 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=445, PETRI_PLACES=142, PETRI_TRANSITIONS=148} [2021-10-15 19:09:53,681 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, 36 predicate places. [2021-10-15 19:09:53,681 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 148 transitions, 445 flow [2021-10-15 19:09:53,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.8) internal successors, (1138), 10 states have internal predecessors, (1138), 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 19:09:53,682 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:09:53,682 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:09:53,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-15 19:09:53,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:09:53,898 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:09:53,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:09:53,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1551350816, now seen corresponding path program 1 times [2021-10-15 19:09:53,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:09:53,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308020318] [2021-10-15 19:09:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:09:53,900 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:09:53,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:09:53,901 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:09:53,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-15 19:09:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:09:54,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 19:09:54,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:09:55,194 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 19:09:55,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:09:55,825 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 19:09:55,825 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:09:55,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308020318] [2021-10-15 19:09:55,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308020318] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:09:55,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:09:55,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-15 19:09:55,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092792851] [2021-10-15 19:09:55,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-15 19:09:55,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:09:55,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-15 19:09:55,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-15 19:09:55,828 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 184 [2021-10-15 19:09:55,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 148 transitions, 445 flow. Second operand has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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 19:09:55,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:09:55,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 184 [2021-10-15 19:09:55,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:09:57,976 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-10-15 19:09:57,977 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2021-10-15 19:09:57,977 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 27 events. 0/27 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 4/31 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 19:09:57,977 INFO L132 encePairwiseOnDemand]: 176/184 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2021-10-15 19:09:57,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 25 transitions, 131 flow [2021-10-15 19:09:57,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:09:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:09:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 900 transitions. [2021-10-15 19:09:57,981 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6114130434782609 [2021-10-15 19:09:57,982 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 900 transitions. [2021-10-15 19:09:57,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 900 transitions. [2021-10-15 19:09:57,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:09:57,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 900 transitions. [2021-10-15 19:09:57,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.5) internal successors, (900), 8 states have internal predecessors, (900), 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 19:09:57,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 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 19:09:57,989 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 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 19:09:57,989 INFO L186 Difference]: Start difference. First operand has 142 places, 148 transitions, 445 flow. Second operand 8 states and 900 transitions. [2021-10-15 19:09:57,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 25 transitions, 131 flow [2021-10-15 19:09:57,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 25 transitions, 108 flow, removed 0 selfloop flow, removed 9 redundant places. [2021-10-15 19:09:57,990 INFO L242 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2021-10-15 19:09:57,990 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2021-10-15 19:09:57,991 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, -62 predicate places. [2021-10-15 19:09:57,991 INFO L470 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2021-10-15 19:09:57,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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 19:09:57,994 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:09:58,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-15 19:09:58,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:09:58,214 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:09:58,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:09:58 BoogieIcfgContainer [2021-10-15 19:09:58,218 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:09:58,219 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:09:58,219 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:09:58,219 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:09:58,220 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:07:20" (3/4) ... [2021-10-15 19:09:58,223 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:09:58,238 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-15 19:09:58,238 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-15 19:09:58,238 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:09:58,241 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:09:58,280 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:09:58,280 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:09:58,281 INFO L168 Benchmark]: Toolchain (without parser) took 166643.42 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 37.0 MB in the beginning and 54.0 MB in the end (delta: -16.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:09:58,281 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 58.7 MB. Free memory is still 39.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:09:58,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.30 ms. Allocated memory is still 58.7 MB. Free memory was 36.7 MB in the beginning and 38.0 MB in the end (delta: -1.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:09:58,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.72 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 35.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:09:58,283 INFO L168 Benchmark]: Boogie Preprocessor took 79.38 ms. Allocated memory is still 58.7 MB. Free memory was 35.1 MB in the beginning and 32.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:09:58,284 INFO L168 Benchmark]: RCFGBuilder took 8108.30 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 32.3 MB in the beginning and 44.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:09:58,284 INFO L168 Benchmark]: TraceAbstraction took 157881.16 ms. Allocated memory is still 81.8 MB. Free memory was 44.1 MB in the beginning and 57.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:09:58,285 INFO L168 Benchmark]: Witness Printer took 61.23 ms. Allocated memory is still 81.8 MB. Free memory was 57.3 MB in the beginning and 54.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:09:58,287 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 58.7 MB. Free memory is still 39.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 405.30 ms. Allocated memory is still 58.7 MB. Free memory was 36.7 MB in the beginning and 38.0 MB in the end (delta: -1.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.72 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 35.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.38 ms. Allocated memory is still 58.7 MB. Free memory was 35.1 MB in the beginning and 32.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 8108.30 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 32.3 MB in the beginning and 44.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 157881.16 ms. Allocated memory is still 81.8 MB. Free memory was 44.1 MB in the beginning and 57.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. * Witness Printer took 61.23 ms. Allocated memory is still 81.8 MB. Free memory was 57.3 MB in the beginning and 54.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 241]: 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, 110 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 157817.2ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 114785.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 151.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 99 SDtfs, 1376 SDslu, 524 SDs, 0 SdLazy, 1367 SolverSat, 211 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 70953.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 416 GetRequests, 281 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 67010.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=522occurred in iteration=4, InterpolantAutomatonStates: 81, 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: 108.0ms SsaConstructionTime, 1112.7ms SatisfiabilityAnalysisTime, 39449.0ms InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 360 ConstructedInterpolants, 139 QuantifiedInterpolants, 3485 SizeOfPredicates, 55 NumberOfNonLiveVariables, 712 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 19:09:58,497 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-15 19:09:58,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc238fb-5f35-4b25-95cc-2176bfaa2dff/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...