./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.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_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/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_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/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_cde9e289-176f-4ae2-af33-501c44f123a9/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 2c4d19baf0429684b688f90d909ef640d9fb6537 .................................................................................................................................................................................................................................................................................................................... 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_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/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_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/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_cde9e289-176f-4ae2-af33-501c44f123a9/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 2c4d19baf0429684b688f90d909ef640d9fb6537 ...................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:51:14,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:51:14,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:51:14,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:51:14,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:51:14,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:51:14,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:51:14,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:51:14,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:51:14,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:51:14,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:51:14,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:51:14,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:51:14,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:51:14,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:51:14,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:51:14,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:51:14,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:51:14,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:51:14,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:51:14,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:51:14,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:51:14,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:51:14,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:51:14,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:51:14,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:51:14,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:51:14,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:51:14,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:51:14,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:51:14,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:51:14,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:51:14,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:51:14,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:51:14,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:51:14,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:51:14,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:51:14,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:51:14,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:51:14,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:51:14,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:51:14,915 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:51:14,946 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:51:14,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:51:14,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:51:14,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:51:14,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:51:14,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:51:14,950 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:51:14,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:51:14,950 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:51:14,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:51:14,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:51:14,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:51:14,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:51:14,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:51:14,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:51:14,952 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:51:14,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:51:14,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:51:14,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:51:14,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:51:14,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:51:14,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:51:14,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:51:14,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:51:14,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:51:14,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:51:14,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:51:14,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:51:14,957 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:51:14,957 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:51:14,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:51:14,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:51:14,958 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_cde9e289-176f-4ae2-af33-501c44f123a9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2021-10-15 19:51:15,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:51:15,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:51:15,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:51:15,377 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:51:15,379 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:51:15,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-15 19:51:15,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/data/bee6c5c27/dec29379b0754a9abfef96721e0ce014/FLAG1fb0f2647 [2021-10-15 19:51:16,132 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:51:16,133 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-15 19:51:16,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/data/bee6c5c27/dec29379b0754a9abfef96721e0ce014/FLAG1fb0f2647 [2021-10-15 19:51:16,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/data/bee6c5c27/dec29379b0754a9abfef96721e0ce014 [2021-10-15 19:51:16,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:51:16,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:51:16,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:51:16,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:51:16,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:51:16,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:51:16" (1/1) ... [2021-10-15 19:51:16,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ba332e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:16, skipping insertion in model container [2021-10-15 19:51:16,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:51:16" (1/1) ... [2021-10-15 19:51:16,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:51:16,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:51:16,922 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_cde9e289-176f-4ae2-af33-501c44f123a9/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-15 19:51:16,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:51:16,945 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:51:17,003 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_cde9e289-176f-4ae2-af33-501c44f123a9/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-15 19:51:17,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:51:17,031 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:51:17,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:17 WrapperNode [2021-10-15 19:51:17,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:51:17,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:51:17,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:51:17,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:51:17,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:17" (1/1) ... [2021-10-15 19:51:17,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:17" (1/1) ... [2021-10-15 19:51:17,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:51:17,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:51:17,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:51:17,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:51:17,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:17" (1/1) ... [2021-10-15 19:51:17,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:17" (1/1) ... [2021-10-15 19:51:17,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:17" (1/1) ... [2021-10-15 19:51:17,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:17" (1/1) ... [2021-10-15 19:51:17,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:17" (1/1) ... [2021-10-15 19:51:17,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:17" (1/1) ... [2021-10-15 19:51:17,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:17" (1/1) ... [2021-10-15 19:51:17,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:51:17,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:51:17,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:51:17,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:51:17,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:17" (1/1) ... [2021-10-15 19:51:17,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:51:17,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:51:17,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:51:17,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:51:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:51:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:51:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-15 19:51:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:51:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-15 19:51:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:51:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:51:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:51:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:51:17,764 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:51:17,767 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-15 19:51:17,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:51:17 BoogieIcfgContainer [2021-10-15 19:51:17,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:51:17,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:51:17,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:51:17,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:51:17,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:51:16" (1/3) ... [2021-10-15 19:51:17,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d6ee2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:51:17, skipping insertion in model container [2021-10-15 19:51:17,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:17" (2/3) ... [2021-10-15 19:51:17,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d6ee2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:51:17, skipping insertion in model container [2021-10-15 19:51:17,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:51:17" (3/3) ... [2021-10-15 19:51:17,792 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2021-10-15 19:51:17,799 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:51:17,800 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:51:17,879 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:51:17,890 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 19:51:17,891 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:51:17,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 38 transitions, 76 flow [2021-10-15 19:51:17,950 INFO L129 PetriNetUnfolder]: 13/38 cut-off events. [2021-10-15 19:51:17,954 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:51:17,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 38 events. 13/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 19:51:17,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 38 transitions, 76 flow [2021-10-15 19:51:17,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 34 transitions, 68 flow [2021-10-15 19:51:17,979 INFO L129 PetriNetUnfolder]: 12/33 cut-off events. [2021-10-15 19:51:17,979 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:51:17,980 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:51:17,980 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:51:17,981 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:51:17,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:51:17,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1124653369, now seen corresponding path program 1 times [2021-10-15 19:51:17,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:51:17,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058072066] [2021-10-15 19:51:18,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:51:18,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:51:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:51:18,170 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 19:51:18,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:51:18,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058072066] [2021-10-15 19:51:18,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058072066] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:51:18,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:51:18,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:51:18,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489761602] [2021-10-15 19:51:18,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:51:18,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:51:18,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:51:18,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:51:18,207 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 38 [2021-10-15 19:51:18,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 34 transitions, 68 flow. Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 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 19:51:18,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:51:18,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 38 [2021-10-15 19:51:18,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:51:18,236 INFO L129 PetriNetUnfolder]: 8/30 cut-off events. [2021-10-15 19:51:18,236 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:51:18,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 30 events. 8/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 40 event pairs, 0 based on Foata normal form. 4/26 useless extension candidates. Maximal degree in co-relation 30. Up to 5 conditions per place. [2021-10-15 19:51:18,239 INFO L132 encePairwiseOnDemand]: 34/38 looper letters, 0 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2021-10-15 19:51:18,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 30 transitions, 60 flow [2021-10-15 19:51:18,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:51:18,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:51:18,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 70 transitions. [2021-10-15 19:51:18,254 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9210526315789473 [2021-10-15 19:51:18,254 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 70 transitions. [2021-10-15 19:51:18,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 70 transitions. [2021-10-15 19:51:18,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:51:18,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 70 transitions. [2021-10-15 19:51:18,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:51:18,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 19:51:18,268 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 19:51:18,270 INFO L186 Difference]: Start difference. First operand has 23 places, 34 transitions, 68 flow. Second operand 2 states and 70 transitions. [2021-10-15 19:51:18,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 30 transitions, 60 flow [2021-10-15 19:51:18,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 30 transitions, 60 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:51:18,276 INFO L242 Difference]: Finished difference. Result has 24 places, 30 transitions, 60 flow [2021-10-15 19:51:18,279 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=24, PETRI_TRANSITIONS=30} [2021-10-15 19:51:18,280 INFO L334 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2021-10-15 19:51:18,280 INFO L470 AbstractCegarLoop]: Abstraction has has 24 places, 30 transitions, 60 flow [2021-10-15 19:51:18,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 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 19:51:18,281 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:51:18,281 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:51:18,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:51:18,282 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:51:18,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:51:18,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2021-10-15 19:51:18,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:51:18,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359082459] [2021-10-15 19:51:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:51:18,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:51:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:51:18,344 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:51:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:51:18,434 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:51:18,434 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:51:18,436 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:51:18,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:51:18,446 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:51:18,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:51:18 BoogieIcfgContainer [2021-10-15 19:51:18,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:51:18,473 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:51:18,474 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:51:18,474 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:51:18,475 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:51:17" (3/4) ... [2021-10-15 19:51:18,479 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:51:18,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:51:18,481 INFO L168 Benchmark]: Toolchain (without parser) took 1983.00 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 65.8 MB in the beginning and 86.4 MB in the end (delta: -20.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:18,482 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 98.6 MB. Free memory is still 52.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:18,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.20 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 65.6 MB in the beginning and 94.4 MB in the end (delta: -28.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:18,484 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.79 ms. Allocated memory is still 119.5 MB. Free memory was 94.4 MB in the beginning and 92.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:18,485 INFO L168 Benchmark]: Boogie Preprocessor took 59.41 ms. Allocated memory is still 119.5 MB. Free memory was 92.8 MB in the beginning and 91.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:18,486 INFO L168 Benchmark]: RCFGBuilder took 593.19 ms. Allocated memory is still 119.5 MB. Free memory was 91.2 MB in the beginning and 79.8 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:18,487 INFO L168 Benchmark]: TraceAbstraction took 696.67 ms. Allocated memory is still 119.5 MB. Free memory was 79.0 MB in the beginning and 87.0 MB in the end (delta: -8.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:18,487 INFO L168 Benchmark]: Witness Printer took 5.58 ms. Allocated memory is still 119.5 MB. Free memory was 87.0 MB in the beginning and 86.4 MB in the end (delta: 546.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:18,492 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 98.6 MB. Free memory is still 52.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 535.20 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 65.6 MB in the beginning and 94.4 MB in the end (delta: -28.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.79 ms. Allocated memory is still 119.5 MB. Free memory was 94.4 MB in the beginning and 92.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.41 ms. Allocated memory is still 119.5 MB. Free memory was 92.8 MB in the beginning and 91.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 593.19 ms. Allocated memory is still 119.5 MB. Free memory was 91.2 MB in the beginning and 79.8 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 696.67 ms. Allocated memory is still 119.5 MB. Free memory was 79.0 MB in the beginning and 87.0 MB in the end (delta: -8.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.58 ms. Allocated memory is still 119.5 MB. Free memory was 87.0 MB in the beginning and 86.4 MB in the end (delta: 546.5 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: 81]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 36, overapproximation of someBinaryArithmeticDOUBLEoperation at line 76, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 17. Possible FailurePath: [L76] double x = 0.0 / 0.0; [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND TRUE exponent_less_1023 < 20 [L30] COND FALSE !(exponent_less_1023 < 0) [L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L38] return x; [L77] double res = round_double(x); [L17] return x != x; [L80] COND TRUE !isnan_double(res) [L81] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 574.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 79.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 83.1ms, 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=68occurred 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: 12.1ms SsaConstructionTime, 83.2ms SatisfiabilityAnalysisTime, 57.7ms InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 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 19:51:18,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/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 19:51:21,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:51:21,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:51:21,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:51:21,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:51:21,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:51:21,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:51:21,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:51:21,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:51:21,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:51:21,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:51:21,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:51:21,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:51:21,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:51:21,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:51:21,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:51:21,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:51:21,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:51:21,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:51:21,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:51:21,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:51:21,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:51:21,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:51:21,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:51:21,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:51:21,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:51:21,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:51:21,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:51:21,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:51:21,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:51:21,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:51:21,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:51:21,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:51:21,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:51:21,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:51:21,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:51:21,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:51:21,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:51:21,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:51:21,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:51:21,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:51:21,770 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 19:51:21,823 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:51:21,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:51:21,825 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:51:21,825 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:51:21,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:51:21,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:51:21,828 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:51:21,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:51:21,829 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:51:21,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:51:21,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:51:21,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:51:21,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:51:21,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:51:21,832 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:51:21,832 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:51:21,833 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:51:21,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:51:21,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:51:21,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:51:21,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:51:21,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:51:21,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:51:21,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:51:21,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:51:21,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:51:21,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:51:21,836 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:51:21,837 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:51:21,837 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:51:21,837 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:51:21,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:51:21,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:51:21,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:51:21,839 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_cde9e289-176f-4ae2-af33-501c44f123a9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2021-10-15 19:51:22,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:51:22,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:51:22,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:51:22,322 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:51:22,323 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:51:22,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-15 19:51:22,403 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/data/b2be893aa/5181a81696ed4682920f66119a93e4ef/FLAG5f87b9d0a [2021-10-15 19:51:22,966 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:51:22,967 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-10-15 19:51:22,977 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/data/b2be893aa/5181a81696ed4682920f66119a93e4ef/FLAG5f87b9d0a [2021-10-15 19:51:23,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/data/b2be893aa/5181a81696ed4682920f66119a93e4ef [2021-10-15 19:51:23,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:51:23,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:51:23,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:51:23,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:51:23,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:51:23,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:51:23" (1/1) ... [2021-10-15 19:51:23,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@771fd939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:23, skipping insertion in model container [2021-10-15 19:51:23,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:51:23" (1/1) ... [2021-10-15 19:51:23,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:51:23,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:51:23,577 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_cde9e289-176f-4ae2-af33-501c44f123a9/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-15 19:51:23,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:51:23,597 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:51:23,650 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_cde9e289-176f-4ae2-af33-501c44f123a9/sv-benchmarks/c/float-newlib/double_req_bl_1031.c[2057,2070] [2021-10-15 19:51:23,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:51:23,709 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:51:23,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:23 WrapperNode [2021-10-15 19:51:23,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:51:23,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:51:23,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:51:23,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:51:23,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:23" (1/1) ... [2021-10-15 19:51:23,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:23" (1/1) ... [2021-10-15 19:51:23,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:51:23,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:51:23,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:51:23,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:51:23,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:23" (1/1) ... [2021-10-15 19:51:23,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:23" (1/1) ... [2021-10-15 19:51:23,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:23" (1/1) ... [2021-10-15 19:51:23,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:23" (1/1) ... [2021-10-15 19:51:23,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:23" (1/1) ... [2021-10-15 19:51:23,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:23" (1/1) ... [2021-10-15 19:51:23,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:23" (1/1) ... [2021-10-15 19:51:23,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:51:23,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:51:23,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:51:23,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:51:23,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:23" (1/1) ... [2021-10-15 19:51:23,864 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:51:23,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:51:23,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:51:23,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:51:23,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-15 19:51:23,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-15 19:51:23,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:51:23,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:51:23,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 19:51:23,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:51:23,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:51:23,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 19:51:23,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:51:24,505 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:51:24,505 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-15 19:51:24,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:51:24 BoogieIcfgContainer [2021-10-15 19:51:24,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:51:24,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:51:24,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:51:24,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:51:24,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:51:23" (1/3) ... [2021-10-15 19:51:24,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3404c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:51:24, skipping insertion in model container [2021-10-15 19:51:24,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:23" (2/3) ... [2021-10-15 19:51:24,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3404c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:51:24, skipping insertion in model container [2021-10-15 19:51:24,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:51:24" (3/3) ... [2021-10-15 19:51:24,554 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2021-10-15 19:51:24,561 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:51:24,561 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:51:24,624 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:51:24,632 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 19:51:24,632 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:51:24,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 38 transitions, 76 flow [2021-10-15 19:51:24,675 INFO L129 PetriNetUnfolder]: 13/38 cut-off events. [2021-10-15 19:51:24,675 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:51:24,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 38 events. 13/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 19:51:24,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 38 transitions, 76 flow [2021-10-15 19:51:24,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 34 transitions, 68 flow [2021-10-15 19:51:24,691 INFO L129 PetriNetUnfolder]: 12/33 cut-off events. [2021-10-15 19:51:24,691 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:51:24,692 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:51:24,693 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:51:24,694 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:51:24,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:51:24,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1124653369, now seen corresponding path program 1 times [2021-10-15 19:51:24,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:51:24,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340545026] [2021-10-15 19:51:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:51:24,718 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:51:24,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:51:24,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:51:24,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:51:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:51:24,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 19:51:24,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:51:25,005 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 19:51:25,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:51:25,088 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 19:51:25,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:51:25,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340545026] [2021-10-15 19:51:25,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340545026] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:51:25,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:51:25,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 19:51:25,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111417693] [2021-10-15 19:51:25,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:51:25,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:51:25,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:51:25,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:51:25,134 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 38 [2021-10-15 19:51:25,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 34 transitions, 68 flow. Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 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 19:51:25,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:51:25,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 38 [2021-10-15 19:51:25,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:51:25,163 INFO L129 PetriNetUnfolder]: 8/30 cut-off events. [2021-10-15 19:51:25,163 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:51:25,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 30 events. 8/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 40 event pairs, 0 based on Foata normal form. 4/26 useless extension candidates. Maximal degree in co-relation 30. Up to 5 conditions per place. [2021-10-15 19:51:25,167 INFO L132 encePairwiseOnDemand]: 34/38 looper letters, 0 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2021-10-15 19:51:25,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 30 transitions, 60 flow [2021-10-15 19:51:25,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:51:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:51:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 70 transitions. [2021-10-15 19:51:25,184 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9210526315789473 [2021-10-15 19:51:25,185 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 70 transitions. [2021-10-15 19:51:25,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 70 transitions. [2021-10-15 19:51:25,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:51:25,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 70 transitions. [2021-10-15 19:51:25,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:51:25,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 19:51:25,202 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 19:51:25,205 INFO L186 Difference]: Start difference. First operand has 23 places, 34 transitions, 68 flow. Second operand 2 states and 70 transitions. [2021-10-15 19:51:25,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 30 transitions, 60 flow [2021-10-15 19:51:25,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 30 transitions, 60 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:51:25,214 INFO L242 Difference]: Finished difference. Result has 24 places, 30 transitions, 60 flow [2021-10-15 19:51:25,217 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=24, PETRI_TRANSITIONS=30} [2021-10-15 19:51:25,218 INFO L334 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2021-10-15 19:51:25,219 INFO L470 AbstractCegarLoop]: Abstraction has has 24 places, 30 transitions, 60 flow [2021-10-15 19:51:25,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 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 19:51:25,220 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:51:25,220 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:51:25,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:51:25,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:51:25,438 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:51:25,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:51:25,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2021-10-15 19:51:25,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:51:25,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613972294] [2021-10-15 19:51:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:51:25,440 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:51:25,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:51:25,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:51:25,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:51:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:51:25,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-15 19:51:25,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:51:25,929 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 19:51:25,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:51:26,188 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 19:51:26,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:51:26,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613972294] [2021-10-15 19:51:26,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613972294] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:51:26,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:51:26,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-15 19:51:26,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221920261] [2021-10-15 19:51:26,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 19:51:26,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:51:26,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 19:51:26,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-15 19:51:26,196 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 38 [2021-10-15 19:51:26,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 30 transitions, 60 flow. Second operand has 10 states, 10 states have (on average 22.2) internal successors, (222), 10 states have internal predecessors, (222), 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 19:51:26,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:51:26,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 38 [2021-10-15 19:51:26,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:51:28,536 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2021-10-15 19:51:28,536 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:51:28,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 32 events. 7/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 40 event pairs, 0 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 45. Up to 6 conditions per place. [2021-10-15 19:51:28,537 INFO L132 encePairwiseOnDemand]: 29/38 looper letters, 5 selfloop transitions, 2 changer transitions 7/32 dead transitions. [2021-10-15 19:51:28,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 32 transitions, 90 flow [2021-10-15 19:51:28,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:51:28,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:51:28,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2021-10-15 19:51:28,542 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2021-10-15 19:51:28,542 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 140 transitions. [2021-10-15 19:51:28,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 140 transitions. [2021-10-15 19:51:28,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:51:28,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 140 transitions. [2021-10-15 19:51:28,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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 19:51:28,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 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 19:51:28,548 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 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 19:51:28,548 INFO L186 Difference]: Start difference. First operand has 24 places, 30 transitions, 60 flow. Second operand 6 states and 140 transitions. [2021-10-15 19:51:28,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 32 transitions, 90 flow [2021-10-15 19:51:28,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 90 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:51:28,565 INFO L242 Difference]: Finished difference. Result has 32 places, 25 transitions, 60 flow [2021-10-15 19:51:28,565 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2021-10-15 19:51:28,567 INFO L334 CegarLoopForPetriNet]: 23 programPoint places, 9 predicate places. [2021-10-15 19:51:28,567 INFO L470 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 60 flow [2021-10-15 19:51:28,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.2) internal successors, (222), 10 states have internal predecessors, (222), 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 19:51:28,568 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:51:28,568 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:51:28,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:51:28,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:51:28,786 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:51:28,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:51:28,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1251020519, now seen corresponding path program 1 times [2021-10-15 19:51:28,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:51:28,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454396504] [2021-10-15 19:51:28,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:51:28,788 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:51:28,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:51:28,789 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:51:28,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:51:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:51:28,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 19:51:28,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:51:29,394 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 19:51:29,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:51:29,667 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 19:51:29,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:51:29,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454396504] [2021-10-15 19:51:29,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454396504] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:51:29,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:51:29,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-15 19:51:29,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894413946] [2021-10-15 19:51:29,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:51:29,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:51:29,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:51:29,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:51:29,672 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2021-10-15 19:51:29,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 60 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 19:51:29,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:51:29,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2021-10-15 19:51:29,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:51:29,932 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-10-15 19:51:29,932 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:51:29,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 6 events. 0/6 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/7 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:51:29,932 INFO L132 encePairwiseOnDemand]: 33/38 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2021-10-15 19:51:29,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 6 transitions, 22 flow [2021-10-15 19:51:29,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:51:29,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:51:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2021-10-15 19:51:29,935 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3736842105263158 [2021-10-15 19:51:29,935 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 71 transitions. [2021-10-15 19:51:29,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 71 transitions. [2021-10-15 19:51:29,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:51:29,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 71 transitions. [2021-10-15 19:51:29,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 19:51:29,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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 19:51:29,939 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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 19:51:29,939 INFO L186 Difference]: Start difference. First operand has 32 places, 25 transitions, 60 flow. Second operand 5 states and 71 transitions. [2021-10-15 19:51:29,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 6 transitions, 22 flow [2021-10-15 19:51:29,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 6 transitions, 21 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:51:29,941 INFO L242 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2021-10-15 19:51:29,941 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2021-10-15 19:51:29,941 INFO L334 CegarLoopForPetriNet]: 23 programPoint places, -7 predicate places. [2021-10-15 19:51:29,941 INFO L470 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2021-10-15 19:51:29,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 19:51:29,945 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:51:29,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:51:30,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:51:30,159 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:51:30,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:51:30 BoogieIcfgContainer [2021-10-15 19:51:30,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:51:30,165 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:51:30,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:51:30,165 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:51:30,166 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:51:24" (3/4) ... [2021-10-15 19:51:30,169 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:51:30,187 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-15 19:51:30,187 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-15 19:51:30,188 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 19:51:30,188 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:51:30,249 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:51:30,249 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:51:30,251 INFO L168 Benchmark]: Toolchain (without parser) took 6912.18 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.9 MB in the beginning and 46.2 MB in the end (delta: -10.3 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:30,252 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 58.7 MB. Free memory was 39.2 MB in the beginning and 39.1 MB in the end (delta: 42.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:30,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.40 ms. Allocated memory is still 58.7 MB. Free memory was 35.7 MB in the beginning and 41.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:30,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.25 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 39.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:30,254 INFO L168 Benchmark]: Boogie Preprocessor took 66.04 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 38.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:30,254 INFO L168 Benchmark]: RCFGBuilder took 659.73 ms. Allocated memory is still 58.7 MB. Free memory was 38.0 MB in the beginning and 25.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:30,255 INFO L168 Benchmark]: TraceAbstraction took 5654.63 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 25.5 MB in the beginning and 49.4 MB in the end (delta: -23.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:30,256 INFO L168 Benchmark]: Witness Printer took 84.28 ms. Allocated memory is still 71.3 MB. Free memory was 49.4 MB in the beginning and 46.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:30,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 58.7 MB. Free memory was 39.2 MB in the beginning and 39.1 MB in the end (delta: 42.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 388.40 ms. Allocated memory is still 58.7 MB. Free memory was 35.7 MB in the beginning and 41.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.25 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 39.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.04 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 38.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 659.73 ms. Allocated memory is still 58.7 MB. Free memory was 38.0 MB in the beginning and 25.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5654.63 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 25.5 MB in the beginning and 49.4 MB in the end (delta: -23.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 84.28 ms. Allocated memory is still 71.3 MB. Free memory was 49.4 MB in the beginning and 46.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 81]: 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, 26 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: 5540.3ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2737.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 51.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 18 SDslu, 12 SDs, 0 SdLazy, 37 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2085.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 900.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=0, InterpolantAutomatonStates: 13, 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: 62.2ms SsaConstructionTime, 224.8ms SatisfiabilityAnalysisTime, 1512.1ms InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 70 ConstructedInterpolants, 12 QuantifiedInterpolants, 249 SizeOfPredicates, 18 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:51:30,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde9e289-176f-4ae2-af33-501c44f123a9/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...