./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1092a.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_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/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_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1092a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/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_eb8a9157-edb3-4d42-a8f0-13199e86e03a/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 51b19897c11e4f835362356179f819ee4e466264 ......................................................................................................................................................................................................................................................................................................................... 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_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/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_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1092a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/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_eb8a9157-edb3-4d42-a8f0-13199e86e03a/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 51b19897c11e4f835362356179f819ee4e466264 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:07:24,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:07:24,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:07:24,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:07:24,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:07:24,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:07:24,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:07:24,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:07:24,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:07:25,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:07:25,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:07:25,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:07:25,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:07:25,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:07:25,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:07:25,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:07:25,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:07:25,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:07:25,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:07:25,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:07:25,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:07:25,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:07:25,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:07:25,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:07:25,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:07:25,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:07:25,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:07:25,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:07:25,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:07:25,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:07:25,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:07:25,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:07:25,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:07:25,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:07:25,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:07:25,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:07:25,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:07:25,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:07:25,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:07:25,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:07:25,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:07:25,080 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:07:25,133 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:07:25,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:07:25,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:07:25,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:07:25,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:07:25,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:07:25,144 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:07:25,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:07:25,145 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:07:25,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:07:25,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:07:25,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:07:25,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:07:25,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:07:25,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:07:25,148 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:07:25,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:07:25,149 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:07:25,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:07:25,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:07:25,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:07:25,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:07:25,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:07:25,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:07:25,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:07:25,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:07:25,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:07:25,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:07:25,152 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:07:25,154 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:07:25,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:07:25,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:07:25,155 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_eb8a9157-edb3-4d42-a8f0-13199e86e03a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51b19897c11e4f835362356179f819ee4e466264 [2021-10-15 20:07:25,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:07:25,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:07:25,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:07:25,538 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:07:25,539 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:07:25,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/float_req_bl_1092a.c [2021-10-15 20:07:25,634 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/data/359a3dad9/3a97df9a65674827b5a5cc06634af47f/FLAGa110d03cf [2021-10-15 20:07:26,275 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:07:26,276 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/sv-benchmarks/c/float-newlib/float_req_bl_1092a.c [2021-10-15 20:07:26,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/data/359a3dad9/3a97df9a65674827b5a5cc06634af47f/FLAGa110d03cf [2021-10-15 20:07:26,632 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/data/359a3dad9/3a97df9a65674827b5a5cc06634af47f [2021-10-15 20:07:26,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:07:26,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:07:26,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:07:26,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:07:26,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:07:26,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:07:26" (1/1) ... [2021-10-15 20:07:26,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ebf9e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:26, skipping insertion in model container [2021-10-15 20:07:26,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:07:26" (1/1) ... [2021-10-15 20:07:26,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:07:26,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:07:26,923 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_eb8a9157-edb3-4d42-a8f0-13199e86e03a/sv-benchmarks/c/float-newlib/float_req_bl_1092a.c[1753,1766] [2021-10-15 20:07:26,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:07:26,937 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:07:26,967 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_eb8a9157-edb3-4d42-a8f0-13199e86e03a/sv-benchmarks/c/float-newlib/float_req_bl_1092a.c[1753,1766] [2021-10-15 20:07:26,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:07:26,994 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:07:26,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:26 WrapperNode [2021-10-15 20:07:26,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:07:26,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:07:26,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:07:26,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:07:27,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:26" (1/1) ... [2021-10-15 20:07:27,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:26" (1/1) ... [2021-10-15 20:07:27,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:07:27,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:07:27,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:07:27,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:07:27,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:26" (1/1) ... [2021-10-15 20:07:27,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:26" (1/1) ... [2021-10-15 20:07:27,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:26" (1/1) ... [2021-10-15 20:07:27,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:26" (1/1) ... [2021-10-15 20:07:27,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:26" (1/1) ... [2021-10-15 20:07:27,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:26" (1/1) ... [2021-10-15 20:07:27,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:26" (1/1) ... [2021-10-15 20:07:27,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:07:27,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:07:27,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:07:27,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:07:27,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:26" (1/1) ... [2021-10-15 20:07:27,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:07:27,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:07:27,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:07:27,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:07:27,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:07:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:07:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-15 20:07:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 20:07:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-15 20:07:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:07:27,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:07:27,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 20:07:27,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 20:07:27,536 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:07:27,537 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-15 20:07:27,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:07:27 BoogieIcfgContainer [2021-10-15 20:07:27,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:07:27,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:07:27,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:07:27,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:07:27,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:07:26" (1/3) ... [2021-10-15 20:07:27,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35db9371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:07:27, skipping insertion in model container [2021-10-15 20:07:27,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:26" (2/3) ... [2021-10-15 20:07:27,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35db9371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:07:27, skipping insertion in model container [2021-10-15 20:07:27,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:07:27" (3/3) ... [2021-10-15 20:07:27,549 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092a.c [2021-10-15 20:07:27,555 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:07:27,555 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:07:27,634 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:07:27,642 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 20:07:27,643 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:07:27,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 46 transitions, 92 flow [2021-10-15 20:07:27,687 INFO L129 PetriNetUnfolder]: 17/46 cut-off events. [2021-10-15 20:07:27,688 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:07:27,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 46 events. 17/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-10-15 20:07:27,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 46 transitions, 92 flow [2021-10-15 20:07:27,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 42 transitions, 84 flow [2021-10-15 20:07:27,710 INFO L129 PetriNetUnfolder]: 15/39 cut-off events. [2021-10-15 20:07:27,710 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:07:27,710 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:07:27,711 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:07:27,712 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:07:27,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:07:27,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2022248449, now seen corresponding path program 1 times [2021-10-15 20:07:27,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:07:27,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336897793] [2021-10-15 20:07:27,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:07:27,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:07:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:07:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:07:27,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:07:27,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336897793] [2021-10-15 20:07:27,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336897793] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:07:27,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:07:27,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:07:27,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760300237] [2021-10-15 20:07:27,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:07:27,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:07:27,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:07:27,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:07:27,966 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 46 [2021-10-15 20:07:27,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 42 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:27,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:07:27,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 46 [2021-10-15 20:07:27,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:07:27,984 INFO L129 PetriNetUnfolder]: 10/36 cut-off events. [2021-10-15 20:07:27,984 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:07:27,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 36 events. 10/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 6/32 useless extension candidates. Maximal degree in co-relation 36. Up to 6 conditions per place. [2021-10-15 20:07:27,987 INFO L132 encePairwiseOnDemand]: 40/46 looper letters, 0 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2021-10-15 20:07:27,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 36 transitions, 72 flow [2021-10-15 20:07:27,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:07:27,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 20:07:27,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 84 transitions. [2021-10-15 20:07:28,001 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9130434782608695 [2021-10-15 20:07:28,002 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 84 transitions. [2021-10-15 20:07:28,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 84 transitions. [2021-10-15 20:07:28,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:07:28,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 84 transitions. [2021-10-15 20:07:28,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:28,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:28,016 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:28,018 INFO L186 Difference]: Start difference. First operand has 27 places, 42 transitions, 84 flow. Second operand 2 states and 84 transitions. [2021-10-15 20:07:28,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 36 transitions, 72 flow [2021-10-15 20:07:28,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 72 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:07:28,025 INFO L242 Difference]: Finished difference. Result has 28 places, 36 transitions, 72 flow [2021-10-15 20:07:28,028 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=28, PETRI_TRANSITIONS=36} [2021-10-15 20:07:28,029 INFO L334 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2021-10-15 20:07:28,029 INFO L470 AbstractCegarLoop]: Abstraction has has 28 places, 36 transitions, 72 flow [2021-10-15 20:07:28,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:28,030 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:07:28,030 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:07:28,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:07:28,031 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:07:28,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:07:28,032 INFO L82 PathProgramCache]: Analyzing trace with hash -62588350, now seen corresponding path program 1 times [2021-10-15 20:07:28,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:07:28,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702919536] [2021-10-15 20:07:28,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:07:28,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:07:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:07:28,109 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:07:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:07:28,217 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:07:28,218 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:07:28,220 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:07:28,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:07:28,234 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:07:28,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:07:28 BoogieIcfgContainer [2021-10-15 20:07:28,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:07:28,274 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:07:28,274 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:07:28,274 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:07:28,274 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:07:27" (3/4) ... [2021-10-15 20:07:28,277 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 20:07:28,277 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:07:28,280 INFO L168 Benchmark]: Toolchain (without parser) took 1641.30 ms. Allocated memory is still 119.5 MB. Free memory was 80.4 MB in the beginning and 51.4 MB in the end (delta: 29.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2021-10-15 20:07:28,280 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 119.5 MB. Free memory is still 96.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:07:28,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.57 ms. Allocated memory is still 119.5 MB. Free memory was 80.1 MB in the beginning and 93.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:07:28,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.83 ms. Allocated memory is still 119.5 MB. Free memory was 93.8 MB in the beginning and 92.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:07:28,283 INFO L168 Benchmark]: Boogie Preprocessor took 35.29 ms. Allocated memory is still 119.5 MB. Free memory was 92.3 MB in the beginning and 90.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:07:28,284 INFO L168 Benchmark]: RCFGBuilder took 458.78 ms. Allocated memory is still 119.5 MB. Free memory was 90.7 MB in the beginning and 78.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:07:28,285 INFO L168 Benchmark]: TraceAbstraction took 731.57 ms. Allocated memory is still 119.5 MB. Free memory was 78.1 MB in the beginning and 51.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:07:28,286 INFO L168 Benchmark]: Witness Printer took 3.77 ms. Allocated memory is still 119.5 MB. Free memory was 51.9 MB in the beginning and 51.4 MB in the end (delta: 515.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:07:28,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 119.5 MB. Free memory is still 96.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 355.57 ms. Allocated memory is still 119.5 MB. Free memory was 80.1 MB in the beginning and 93.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.83 ms. Allocated memory is still 119.5 MB. Free memory was 93.8 MB in the beginning and 92.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.29 ms. Allocated memory is still 119.5 MB. Free memory was 92.3 MB in the beginning and 90.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 458.78 ms. Allocated memory is still 119.5 MB. Free memory was 90.7 MB in the beginning and 78.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 731.57 ms. Allocated memory is still 119.5 MB. Free memory was 78.1 MB in the beginning and 51.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 3.77 ms. Allocated memory is still 119.5 MB. Free memory was 51.9 MB in the beginning and 51.4 MB in the end (delta: 515.1 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: 83]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 82, overapproximation of someUnaryFLOAToperation at line 78, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; VAL [huge_ceil=1000000000000000000000000000000] [L78] float x = -0.0f; [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [huge_ceil=1000000000000000000000000000000] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [huge_ceil=1000000000000000000000000000000] [L25] COND FALSE !(j0 < 23) VAL [huge_ceil=1000000000000000000000000000000] [L45] COND FALSE !(!((ix) < 0x7f800000L)) [L48] return x; VAL [huge_ceil=1000000000000000000000000000000] [L79] float res = ceil_float(x); [L82] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [huge_ceil=1000000000000000000000000000000] [L82] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L83] reach_error() VAL [huge_ceil=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 14.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 602.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 69.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 53.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 0 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.2ms SsaConstructionTime, 100.7ms SatisfiabilityAnalysisTime, 56.8ms InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-15 20:07:28,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:07:31,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:07:31,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:07:31,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:07:31,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:07:31,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:07:31,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:07:31,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:07:31,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:07:31,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:07:31,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:07:31,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:07:31,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:07:31,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:07:31,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:07:31,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:07:31,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:07:31,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:07:31,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:07:31,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:07:31,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:07:31,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:07:31,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:07:31,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:07:31,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:07:31,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:07:31,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:07:31,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:07:31,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:07:31,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:07:31,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:07:31,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:07:31,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:07:31,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:07:31,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:07:31,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:07:31,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:07:31,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:07:31,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:07:31,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:07:31,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:07:31,453 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 20:07:31,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:07:31,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:07:31,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:07:31,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:07:31,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:07:31,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:07:31,512 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:07:31,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:07:31,512 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:07:31,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:07:31,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:07:31,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:07:31,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:07:31,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:07:31,515 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 20:07:31,516 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 20:07:31,516 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:07:31,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:07:31,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:07:31,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:07:31,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:07:31,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:07:31,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:07:31,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:07:31,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:07:31,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:07:31,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:07:31,520 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 20:07:31,520 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 20:07:31,520 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:07:31,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:07:31,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:07:31,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:07:31,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 20:07:31,522 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_eb8a9157-edb3-4d42-a8f0-13199e86e03a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51b19897c11e4f835362356179f819ee4e466264 [2021-10-15 20:07:32,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:07:32,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:07:32,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:07:32,059 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:07:32,061 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:07:32,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/float_req_bl_1092a.c [2021-10-15 20:07:32,159 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/data/c826829fe/710fde8c1646447e91b797201cda7671/FLAG63d02b8c2 [2021-10-15 20:07:32,801 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:07:32,802 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/sv-benchmarks/c/float-newlib/float_req_bl_1092a.c [2021-10-15 20:07:32,816 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/data/c826829fe/710fde8c1646447e91b797201cda7671/FLAG63d02b8c2 [2021-10-15 20:07:33,137 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/data/c826829fe/710fde8c1646447e91b797201cda7671 [2021-10-15 20:07:33,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:07:33,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:07:33,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:07:33,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:07:33,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:07:33,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:07:33" (1/1) ... [2021-10-15 20:07:33,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c30c449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:33, skipping insertion in model container [2021-10-15 20:07:33,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:07:33" (1/1) ... [2021-10-15 20:07:33,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:07:33,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:07:33,411 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_eb8a9157-edb3-4d42-a8f0-13199e86e03a/sv-benchmarks/c/float-newlib/float_req_bl_1092a.c[1753,1766] [2021-10-15 20:07:33,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:07:33,431 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:07:33,477 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_eb8a9157-edb3-4d42-a8f0-13199e86e03a/sv-benchmarks/c/float-newlib/float_req_bl_1092a.c[1753,1766] [2021-10-15 20:07:33,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:07:33,539 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:07:33,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:33 WrapperNode [2021-10-15 20:07:33,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:07:33,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:07:33,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:07:33,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:07:33,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:33" (1/1) ... [2021-10-15 20:07:33,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:33" (1/1) ... [2021-10-15 20:07:33,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:07:33,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:07:33,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:07:33,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:07:33,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:33" (1/1) ... [2021-10-15 20:07:33,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:33" (1/1) ... [2021-10-15 20:07:33,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:33" (1/1) ... [2021-10-15 20:07:33,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:33" (1/1) ... [2021-10-15 20:07:33,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:33" (1/1) ... [2021-10-15 20:07:33,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:33" (1/1) ... [2021-10-15 20:07:33,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:33" (1/1) ... [2021-10-15 20:07:33,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:07:33,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:07:33,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:07:33,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:07:33,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:33" (1/1) ... [2021-10-15 20:07:33,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:07:33,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:07:33,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:07:33,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:07:33,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 20:07:33,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:07:33,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-15 20:07:33,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 20:07:33,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:07:33,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:07:33,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-15 20:07:33,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 20:07:33,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 20:07:34,751 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:07:34,752 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-15 20:07:34,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:07:34 BoogieIcfgContainer [2021-10-15 20:07:34,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:07:34,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:07:34,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:07:34,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:07:34,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:07:33" (1/3) ... [2021-10-15 20:07:34,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0054ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:07:34, skipping insertion in model container [2021-10-15 20:07:34,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:33" (2/3) ... [2021-10-15 20:07:34,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0054ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:07:34, skipping insertion in model container [2021-10-15 20:07:34,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:07:34" (3/3) ... [2021-10-15 20:07:34,773 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092a.c [2021-10-15 20:07:34,780 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:07:34,780 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:07:34,841 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:07:34,849 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 20:07:34,850 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:07:34,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 46 transitions, 92 flow [2021-10-15 20:07:34,891 INFO L129 PetriNetUnfolder]: 17/46 cut-off events. [2021-10-15 20:07:34,892 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:07:34,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 46 events. 17/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-10-15 20:07:34,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 46 transitions, 92 flow [2021-10-15 20:07:34,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 42 transitions, 84 flow [2021-10-15 20:07:34,909 INFO L129 PetriNetUnfolder]: 15/39 cut-off events. [2021-10-15 20:07:34,910 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:07:34,910 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:07:34,911 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:07:34,912 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:07:34,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:07:34,919 INFO L82 PathProgramCache]: Analyzing trace with hash -2022248449, now seen corresponding path program 1 times [2021-10-15 20:07:34,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:07:34,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657545325] [2021-10-15 20:07:34,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:07:34,936 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:07:34,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:07:34,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:07:34,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 20:07:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:07:35,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 20:07:35,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:07:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:07:35,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:07:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:07:35,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:07:35,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657545325] [2021-10-15 20:07:35,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657545325] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:07:35,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:07:35,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 20:07:35,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828015388] [2021-10-15 20:07:35,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:07:35,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:07:35,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:07:35,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:07:35,205 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 46 [2021-10-15 20:07:35,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 42 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:35,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:07:35,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 46 [2021-10-15 20:07:35,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:07:35,233 INFO L129 PetriNetUnfolder]: 10/36 cut-off events. [2021-10-15 20:07:35,234 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:07:35,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 36 events. 10/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 6/32 useless extension candidates. Maximal degree in co-relation 36. Up to 6 conditions per place. [2021-10-15 20:07:35,238 INFO L132 encePairwiseOnDemand]: 40/46 looper letters, 0 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2021-10-15 20:07:35,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 36 transitions, 72 flow [2021-10-15 20:07:35,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:07:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 20:07:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 84 transitions. [2021-10-15 20:07:35,253 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9130434782608695 [2021-10-15 20:07:35,254 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 84 transitions. [2021-10-15 20:07:35,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 84 transitions. [2021-10-15 20:07:35,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:07:35,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 84 transitions. [2021-10-15 20:07:35,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:35,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:35,269 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:35,272 INFO L186 Difference]: Start difference. First operand has 27 places, 42 transitions, 84 flow. Second operand 2 states and 84 transitions. [2021-10-15 20:07:35,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 36 transitions, 72 flow [2021-10-15 20:07:35,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 72 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:07:35,282 INFO L242 Difference]: Finished difference. Result has 28 places, 36 transitions, 72 flow [2021-10-15 20:07:35,285 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=28, PETRI_TRANSITIONS=36} [2021-10-15 20:07:35,286 INFO L334 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2021-10-15 20:07:35,286 INFO L470 AbstractCegarLoop]: Abstraction has has 28 places, 36 transitions, 72 flow [2021-10-15 20:07:35,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:35,288 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:07:35,288 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:07:35,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:07:35,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:07:35,503 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:07:35,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:07:35,504 INFO L82 PathProgramCache]: Analyzing trace with hash -62588350, now seen corresponding path program 1 times [2021-10-15 20:07:35,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:07:35,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110879391] [2021-10-15 20:07:35,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:07:35,517 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:07:35,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:07:35,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:07:35,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 20:07:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:07:35,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 20:07:35,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:07:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:07:35,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:07:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:07:36,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:07:36,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110879391] [2021-10-15 20:07:36,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110879391] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:07:36,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:07:36,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-15 20:07:36,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227066277] [2021-10-15 20:07:36,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 20:07:36,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:07:36,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 20:07:36,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-15 20:07:36,036 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2021-10-15 20:07:36,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 36 transitions, 72 flow. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:36,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:07:36,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2021-10-15 20:07:36,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:07:36,248 INFO L129 PetriNetUnfolder]: 2/22 cut-off events. [2021-10-15 20:07:36,248 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:07:36,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 22 events. 2/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 32. Up to 8 conditions per place. [2021-10-15 20:07:36,249 INFO L132 encePairwiseOnDemand]: 40/46 looper letters, 7 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2021-10-15 20:07:36,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 64 flow [2021-10-15 20:07:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:07:36,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:07:36,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2021-10-15 20:07:36,258 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4043478260869565 [2021-10-15 20:07:36,258 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 93 transitions. [2021-10-15 20:07:36,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 93 transitions. [2021-10-15 20:07:36,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:07:36,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 93 transitions. [2021-10-15 20:07:36,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:36,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:36,270 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:36,271 INFO L186 Difference]: Start difference. First operand has 28 places, 36 transitions, 72 flow. Second operand 5 states and 93 transitions. [2021-10-15 20:07:36,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 22 transitions, 64 flow [2021-10-15 20:07:36,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 64 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:07:36,277 INFO L242 Difference]: Finished difference. Result has 26 places, 22 transitions, 50 flow [2021-10-15 20:07:36,278 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2021-10-15 20:07:36,278 INFO L334 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2021-10-15 20:07:36,279 INFO L470 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 50 flow [2021-10-15 20:07:36,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:36,280 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:07:36,280 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:07:36,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 20:07:36,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:07:36,487 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:07:36,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:07:36,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1612307429, now seen corresponding path program 1 times [2021-10-15 20:07:36,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:07:36,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931992851] [2021-10-15 20:07:36,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:07:36,491 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:07:36,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:07:36,508 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:07:36,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 20:07:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:07:36,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 20:07:36,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:07:37,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:07:37,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:07:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:07:39,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:07:39,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931992851] [2021-10-15 20:07:39,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931992851] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:07:39,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:07:39,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-15 20:07:39,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263597886] [2021-10-15 20:07:39,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:07:39,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:07:39,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:07:39,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:07:39,021 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 46 [2021-10-15 20:07:39,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:39,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:07:39,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 46 [2021-10-15 20:07:39,022 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:07:39,280 INFO L129 PetriNetUnfolder]: 1/21 cut-off events. [2021-10-15 20:07:39,280 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:07:39,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 21 events. 1/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2021-10-15 20:07:39,281 INFO L132 encePairwiseOnDemand]: 42/46 looper letters, 3 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2021-10-15 20:07:39,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 60 flow [2021-10-15 20:07:39,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:07:39,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:07:39,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2021-10-15 20:07:39,288 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.625 [2021-10-15 20:07:39,288 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 115 transitions. [2021-10-15 20:07:39,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 115 transitions. [2021-10-15 20:07:39,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:07:39,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 115 transitions. [2021-10-15 20:07:39,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:39,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:39,293 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:39,293 INFO L186 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 4 states and 115 transitions. [2021-10-15 20:07:39,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 60 flow [2021-10-15 20:07:39,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 55 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 20:07:39,296 INFO L242 Difference]: Finished difference. Result has 26 places, 21 transitions, 49 flow [2021-10-15 20:07:39,296 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=49, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2021-10-15 20:07:39,296 INFO L334 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2021-10-15 20:07:39,297 INFO L470 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 49 flow [2021-10-15 20:07:39,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:39,297 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:07:39,297 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:07:39,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 20:07:39,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:07:39,499 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:07:39,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:07:39,499 INFO L82 PathProgramCache]: Analyzing trace with hash 879764433, now seen corresponding path program 1 times [2021-10-15 20:07:39,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:07:39,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218044895] [2021-10-15 20:07:39,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:07:39,501 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:07:39,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:07:39,502 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:07:39,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 20:07:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:07:39,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 20:07:39,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:07:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:07:39,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:07:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:07:39,997 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:07:39,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218044895] [2021-10-15 20:07:39,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218044895] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:07:39,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:07:39,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-10-15 20:07:39,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939083532] [2021-10-15 20:07:40,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-15 20:07:40,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:07:40,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-15 20:07:40,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-15 20:07:40,006 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2021-10-15 20:07:40,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 49 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 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 20:07:40,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:07:40,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2021-10-15 20:07:40,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:07:40,236 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-10-15 20:07:40,236 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:07:40,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 20:07:40,237 INFO L132 encePairwiseOnDemand]: 40/46 looper letters, 6 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2021-10-15 20:07:40,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 20 transitions, 69 flow [2021-10-15 20:07:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:07:40,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:07:40,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2021-10-15 20:07:40,248 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.34782608695652173 [2021-10-15 20:07:40,248 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 96 transitions. [2021-10-15 20:07:40,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 96 transitions. [2021-10-15 20:07:40,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:07:40,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 96 transitions. [2021-10-15 20:07:40,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:40,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:40,252 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:40,252 INFO L186 Difference]: Start difference. First operand has 26 places, 21 transitions, 49 flow. Second operand 6 states and 96 transitions. [2021-10-15 20:07:40,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 20 transitions, 69 flow [2021-10-15 20:07:40,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 20 transitions, 63 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 20:07:40,255 INFO L242 Difference]: Finished difference. Result has 28 places, 20 transitions, 51 flow [2021-10-15 20:07:40,255 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=51, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2021-10-15 20:07:40,255 INFO L334 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2021-10-15 20:07:40,255 INFO L470 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 51 flow [2021-10-15 20:07:40,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 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 20:07:40,256 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:07:40,256 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:07:40,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-15 20:07:40,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:07:40,470 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:07:40,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:07:40,471 INFO L82 PathProgramCache]: Analyzing trace with hash -733783834, now seen corresponding path program 1 times [2021-10-15 20:07:40,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:07:40,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285633267] [2021-10-15 20:07:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:07:40,472 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:07:40,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:07:40,474 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:07:40,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-15 20:07:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:07:40,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-15 20:07:40,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:07:40,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2021-10-15 20:07:41,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-10-15 20:07:41,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:07:41,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:07:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:07:41,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:07:41,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285633267] [2021-10-15 20:07:41,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285633267] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:07:41,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:07:41,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-10-15 20:07:41,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782320833] [2021-10-15 20:07:41,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-15 20:07:41,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:07:41,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-15 20:07:41,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-10-15 20:07:41,704 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2021-10-15 20:07:41,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 51 flow. Second operand has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:41,705 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:07:41,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2021-10-15 20:07:41,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:07:42,614 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-10-15 20:07:42,614 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 20:07:42,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 18 events. 0/18 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. 1/19 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 20:07:42,614 INFO L132 encePairwiseOnDemand]: 36/46 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2021-10-15 20:07:42,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 18 transitions, 73 flow [2021-10-15 20:07:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 20:07:42,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-15 20:07:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2021-10-15 20:07:42,618 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.26679841897233203 [2021-10-15 20:07:42,618 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 135 transitions. [2021-10-15 20:07:42,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 135 transitions. [2021-10-15 20:07:42,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:07:42,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 135 transitions. [2021-10-15 20:07:42,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:42,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:42,623 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:42,623 INFO L186 Difference]: Start difference. First operand has 28 places, 20 transitions, 51 flow. Second operand 11 states and 135 transitions. [2021-10-15 20:07:42,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 18 transitions, 73 flow [2021-10-15 20:07:42,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 18 transitions, 63 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-15 20:07:42,624 INFO L242 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2021-10-15 20:07:42,625 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2021-10-15 20:07:42,625 INFO L334 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2021-10-15 20:07:42,625 INFO L470 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2021-10-15 20:07:42,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:07:42,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:07:42,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-15 20:07:42,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:07:42,848 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:07:42,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:07:42 BoogieIcfgContainer [2021-10-15 20:07:42,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:07:42,854 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:07:42,854 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:07:42,855 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:07:42,858 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:07:34" (3/4) ... [2021-10-15 20:07:42,862 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 20:07:42,875 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-15 20:07:42,876 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-15 20:07:42,876 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:07:42,877 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:07:42,938 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:07:42,939 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:07:42,941 INFO L168 Benchmark]: Toolchain (without parser) took 9797.75 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 36.5 MB in the beginning and 55.4 MB in the end (delta: -18.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:07:42,941 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 58.7 MB. Free memory was 39.0 MB in the beginning and 39.0 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:07:42,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.30 ms. Allocated memory is still 58.7 MB. Free memory was 36.3 MB in the beginning and 42.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-15 20:07:42,942 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.19 ms. Allocated memory is still 58.7 MB. Free memory was 42.1 MB in the beginning and 40.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:07:42,943 INFO L168 Benchmark]: Boogie Preprocessor took 81.86 ms. Allocated memory is still 58.7 MB. Free memory was 40.4 MB in the beginning and 38.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:07:42,944 INFO L168 Benchmark]: RCFGBuilder took 1033.82 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 26.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:07:42,944 INFO L168 Benchmark]: TraceAbstraction took 8097.02 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 26.0 MB in the beginning and 58.2 MB in the end (delta: -32.1 MB). Peak memory consumption was 676.6 kB. Max. memory is 16.1 GB. [2021-10-15 20:07:42,945 INFO L168 Benchmark]: Witness Printer took 84.79 ms. Allocated memory is still 88.1 MB. Free memory was 58.2 MB in the beginning and 55.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:07:42,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 58.7 MB. Free memory was 39.0 MB in the beginning and 39.0 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 389.30 ms. Allocated memory is still 58.7 MB. Free memory was 36.3 MB in the beginning and 42.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.19 ms. Allocated memory is still 58.7 MB. Free memory was 42.1 MB in the beginning and 40.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.86 ms. Allocated memory is still 58.7 MB. Free memory was 40.4 MB in the beginning and 38.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1033.82 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 26.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8097.02 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 26.0 MB in the beginning and 58.2 MB in the end (delta: -32.1 MB). Peak memory consumption was 676.6 kB. Max. memory is 16.1 GB. * Witness Printer took 84.79 ms. Allocated memory is still 88.1 MB. Free memory was 58.2 MB in the beginning and 55.4 MB in the end (delta: 2.8 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: 83]: 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, 30 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8011.6ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1787.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 50.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 106 SDslu, 11 SDs, 0 SdLazy, 110 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 852.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2080.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=0, InterpolantAutomatonStates: 28, 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: 70.5ms SsaConstructionTime, 461.4ms SatisfiabilityAnalysisTime, 4125.9ms InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 134 ConstructedInterpolants, 13 QuantifiedInterpolants, 683 SizeOfPredicates, 27 NumberOfNonLiveVariables, 262 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 20:07:43,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8a9157-edb3-4d42-a8f0-13199e86e03a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...