./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float2.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_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/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_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/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_034e5849-b1e1-4754-849b-544e10c053ff/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 069e404bf7b01a351383c4004538ba52022db96a ................................................................................................................................................................................................................................................................ 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_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/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_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/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_034e5849-b1e1-4754-849b-544e10c053ff/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 069e404bf7b01a351383c4004538ba52022db96a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:08:14,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:08:14,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:08:14,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:08:14,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:08:14,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:08:14,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:08:14,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:08:14,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:08:14,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:08:14,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:08:14,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:08:14,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:08:14,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:08:14,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:08:14,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:08:14,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:08:14,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:08:14,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:08:14,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:08:14,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:08:14,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:08:14,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:08:14,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:08:14,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:08:14,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:08:14,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:08:14,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:08:14,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:08:14,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:08:14,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:08:14,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:08:14,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:08:14,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:08:14,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:08:14,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:08:14,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:08:14,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:08:14,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:08:14,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:08:14,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:08:14,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:08:14,398 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:08:14,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:08:14,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:08:14,399 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:08:14,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:08:14,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:08:14,401 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:08:14,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:08:14,402 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:08:14,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:08:14,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:08:14,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:08:14,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:08:14,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:08:14,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:08:14,404 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:08:14,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:08:14,405 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:08:14,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:08:14,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:08:14,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:08:14,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:08:14,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:08:14,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:08:14,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:08:14,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:08:14,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:08:14,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:08:14,408 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:08:14,408 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:08:14,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:08:14,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:08:14,409 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_034e5849-b1e1-4754-849b-544e10c053ff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 069e404bf7b01a351383c4004538ba52022db96a [2021-10-15 19:08:14,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:08:14,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:08:14,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:08:14,777 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:08:14,778 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:08:14,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-10-15 19:08:14,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/data/2c4dc2291/f94fac87df29462d8d51d6a123f372d8/FLAGab3efbae0 [2021-10-15 19:08:15,331 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:08:15,334 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-10-15 19:08:15,345 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/data/2c4dc2291/f94fac87df29462d8d51d6a123f372d8/FLAGab3efbae0 [2021-10-15 19:08:15,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/data/2c4dc2291/f94fac87df29462d8d51d6a123f372d8 [2021-10-15 19:08:15,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:08:15,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:08:15,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:08:15,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:08:15,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:08:15,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:08:15" (1/1) ... [2021-10-15 19:08:15,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f8b2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:15, skipping insertion in model container [2021-10-15 19:08:15,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:08:15" (1/1) ... [2021-10-15 19:08:15,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:08:15,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:08:15,915 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[366,379] [2021-10-15 19:08:15,921 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[420,433] [2021-10-15 19:08:15,926 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[493,506] [2021-10-15 19:08:15,928 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[557,570] [2021-10-15 19:08:15,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:08:15,943 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:08:15,954 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[366,379] [2021-10-15 19:08:15,955 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[420,433] [2021-10-15 19:08:15,956 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[493,506] [2021-10-15 19:08:15,957 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[557,570] [2021-10-15 19:08:15,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:08:15,971 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:08:15,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:15 WrapperNode [2021-10-15 19:08:15,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:08:15,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:08:15,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:08:15,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:08:15,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:15" (1/1) ... [2021-10-15 19:08:15,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:15" (1/1) ... [2021-10-15 19:08:16,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:08:16,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:08:16,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:08:16,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:08:16,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:15" (1/1) ... [2021-10-15 19:08:16,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:15" (1/1) ... [2021-10-15 19:08:16,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:15" (1/1) ... [2021-10-15 19:08:16,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:15" (1/1) ... [2021-10-15 19:08:16,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:15" (1/1) ... [2021-10-15 19:08:16,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:15" (1/1) ... [2021-10-15 19:08:16,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:15" (1/1) ... [2021-10-15 19:08:16,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:08:16,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:08:16,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:08:16,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:08:16,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:15" (1/1) ... [2021-10-15 19:08:16,037 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:08:16,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:08:16,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:08:16,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:08:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:08:16,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:08:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:08:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:08:16,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:08:16,348 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-15 19:08:16,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:08:16 BoogieIcfgContainer [2021-10-15 19:08:16,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:08:16,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:08:16,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:08:16,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:08:16,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:08:15" (1/3) ... [2021-10-15 19:08:16,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffb234e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:08:16, skipping insertion in model container [2021-10-15 19:08:16,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:15" (2/3) ... [2021-10-15 19:08:16,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffb234e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:08:16, skipping insertion in model container [2021-10-15 19:08:16,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:08:16" (3/3) ... [2021-10-15 19:08:16,359 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2021-10-15 19:08:16,364 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:08:16,365 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-15 19:08:16,421 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:08:16,428 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:08:16,428 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-15 19:08:16,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 23 transitions, 46 flow [2021-10-15 19:08:16,459 INFO L129 PetriNetUnfolder]: 4/23 cut-off events. [2021-10-15 19:08:16,459 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:08:16,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 23 events. 4/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:08:16,461 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 23 transitions, 46 flow [2021-10-15 19:08:16,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 17 places, 19 transitions, 38 flow [2021-10-15 19:08:16,471 INFO L129 PetriNetUnfolder]: 1/6 cut-off events. [2021-10-15 19:08:16,473 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:08:16,473 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:08:16,474 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-10-15 19:08:16,474 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-15 19:08:16,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:08:16,479 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-15 19:08:16,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:08:16,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179508583] [2021-10-15 19:08:16,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:08:16,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:08:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:08:16,594 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:08:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:08:16,648 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:08:16,650 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:08:16,651 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:08:16,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:08:16,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:08:16,654 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:08:16,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:08:16,661 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:08:16,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:08:16 BoogieIcfgContainer [2021-10-15 19:08:16,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:08:16,676 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:08:16,676 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:08:16,676 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:08:16,676 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:08:16" (3/4) ... [2021-10-15 19:08:16,692 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:08:16,692 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:08:16,694 INFO L168 Benchmark]: Toolchain (without parser) took 975.25 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 64.3 MB in the beginning and 95.2 MB in the end (delta: -30.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:08:16,695 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory is still 52.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:08:16,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.97 ms. Allocated memory is still 96.5 MB. Free memory was 64.0 MB in the beginning and 72.8 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:08:16,696 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.86 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 71.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:08:16,697 INFO L168 Benchmark]: Boogie Preprocessor took 19.45 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 70.4 MB in the end (delta: 964.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:08:16,698 INFO L168 Benchmark]: RCFGBuilder took 323.36 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 61.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:08:16,698 INFO L168 Benchmark]: TraceAbstraction took 323.24 ms. Allocated memory is still 96.5 MB. Free memory was 61.2 MB in the beginning and 47.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:08:16,699 INFO L168 Benchmark]: Witness Printer took 16.64 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 47.1 MB in the beginning and 95.2 MB in the end (delta: -48.1 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:08:16,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory is still 52.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.97 ms. Allocated memory is still 96.5 MB. Free memory was 64.0 MB in the beginning and 72.8 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.86 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 71.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.45 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 70.4 MB in the end (delta: 964.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 323.36 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 61.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 323.24 ms. Allocated memory is still 96.5 MB. Free memory was 61.2 MB in the beginning and 47.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 16.64 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 47.1 MB in the beginning and 95.2 MB in the end (delta: -48.1 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12. Possible FailurePath: [L7] float a; [L8] double b; [L11] a=1.25L [L12] COND TRUE !(a==1.25) [L12] reach_error() - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 242.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 39.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 5.5ms SsaConstructionTime, 31.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-15 19:08:16,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/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 19:08:19,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:08:19,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:08:19,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:08:19,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:08:19,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:08:19,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:08:19,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:08:19,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:08:19,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:08:19,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:08:19,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:08:19,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:08:19,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:08:19,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:08:19,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:08:19,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:08:19,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:08:19,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:08:19,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:08:19,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:08:19,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:08:19,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:08:19,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:08:19,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:08:19,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:08:19,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:08:19,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:08:19,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:08:19,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:08:19,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:08:19,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:08:19,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:08:19,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:08:19,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:08:19,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:08:19,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:08:19,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:08:19,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:08:19,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:08:19,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:08:19,548 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 19:08:19,598 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:08:19,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:08:19,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:08:19,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:08:19,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:08:19,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:08:19,603 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:08:19,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:08:19,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:08:19,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:08:19,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:08:19,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:08:19,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:08:19,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:08:19,607 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:08:19,607 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:08:19,607 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:08:19,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:08:19,608 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:08:19,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:08:19,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:08:19,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:08:19,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:08:19,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:08:19,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:08:19,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:08:19,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:08:19,610 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:08:19,611 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:08:19,611 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:08:19,611 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:08:19,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:08:19,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:08:19,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:08:19,613 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_034e5849-b1e1-4754-849b-544e10c053ff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 069e404bf7b01a351383c4004538ba52022db96a [2021-10-15 19:08:20,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:08:20,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:08:20,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:08:20,055 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:08:20,056 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:08:20,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-10-15 19:08:20,136 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/data/da5c3bb96/e84c5a9a3ac9409fac8862414adf3f83/FLAGc78cb1e9b [2021-10-15 19:08:20,662 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:08:20,663 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-10-15 19:08:20,670 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/data/da5c3bb96/e84c5a9a3ac9409fac8862414adf3f83/FLAGc78cb1e9b [2021-10-15 19:08:21,050 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/data/da5c3bb96/e84c5a9a3ac9409fac8862414adf3f83 [2021-10-15 19:08:21,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:08:21,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:08:21,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:08:21,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:08:21,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:08:21,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:08:21" (1/1) ... [2021-10-15 19:08:21,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc0dc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:21, skipping insertion in model container [2021-10-15 19:08:21,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:08:21" (1/1) ... [2021-10-15 19:08:21,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:08:21,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:08:21,269 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[366,379] [2021-10-15 19:08:21,282 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[420,433] [2021-10-15 19:08:21,288 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[493,506] [2021-10-15 19:08:21,290 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[557,570] [2021-10-15 19:08:21,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:08:21,306 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:08:21,338 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[366,379] [2021-10-15 19:08:21,339 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[420,433] [2021-10-15 19:08:21,340 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[493,506] [2021-10-15 19:08:21,341 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_034e5849-b1e1-4754-849b-544e10c053ff/sv-benchmarks/c/floats-cbmc-regression/float2.c[557,570] [2021-10-15 19:08:21,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:08:21,356 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:08:21,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:21 WrapperNode [2021-10-15 19:08:21,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:08:21,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:08:21,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:08:21,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:08:21,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:21" (1/1) ... [2021-10-15 19:08:21,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:21" (1/1) ... [2021-10-15 19:08:21,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:08:21,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:08:21,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:08:21,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:08:21,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:21" (1/1) ... [2021-10-15 19:08:21,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:21" (1/1) ... [2021-10-15 19:08:21,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:21" (1/1) ... [2021-10-15 19:08:21,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:21" (1/1) ... [2021-10-15 19:08:21,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:21" (1/1) ... [2021-10-15 19:08:21,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:21" (1/1) ... [2021-10-15 19:08:21,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:21" (1/1) ... [2021-10-15 19:08:21,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:08:21,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:08:21,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:08:21,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:08:21,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:21" (1/1) ... [2021-10-15 19:08:21,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:08:21,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:08:21,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:08:21,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:08:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:08:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:08:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:08:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:08:22,121 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:08:22,122 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-15 19:08:22,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:08:22 BoogieIcfgContainer [2021-10-15 19:08:22,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:08:22,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:08:22,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:08:22,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:08:22,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:08:21" (1/3) ... [2021-10-15 19:08:22,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20583598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:08:22, skipping insertion in model container [2021-10-15 19:08:22,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:08:21" (2/3) ... [2021-10-15 19:08:22,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20583598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:08:22, skipping insertion in model container [2021-10-15 19:08:22,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:08:22" (3/3) ... [2021-10-15 19:08:22,147 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2021-10-15 19:08:22,152 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:08:22,152 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-15 19:08:22,239 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:08:22,245 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:08:22,246 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-15 19:08:22,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 23 transitions, 46 flow [2021-10-15 19:08:22,285 INFO L129 PetriNetUnfolder]: 4/23 cut-off events. [2021-10-15 19:08:22,286 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:08:22,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 23 events. 4/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:08:22,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 23 transitions, 46 flow [2021-10-15 19:08:22,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 17 places, 19 transitions, 38 flow [2021-10-15 19:08:22,295 INFO L129 PetriNetUnfolder]: 1/6 cut-off events. [2021-10-15 19:08:22,295 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:08:22,295 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:08:22,296 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-10-15 19:08:22,297 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-15 19:08:22,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:08:22,302 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-15 19:08:22,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:08:22,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505070935] [2021-10-15 19:08:22,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:08:22,316 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:08:22,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:08:22,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:08:22,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:08:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:08:22,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:08:22,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:08:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:22,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:08:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:22,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:08:22,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505070935] [2021-10-15 19:08:22,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505070935] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:08:22,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:08:22,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-15 19:08:22,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866554070] [2021-10-15 19:08:22,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:08:22,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:08:22,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:08:22,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:08:22,951 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2021-10-15 19:08:22,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 19 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:22,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:08:22,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2021-10-15 19:08:22,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:08:23,056 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-10-15 19:08:23,056 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:08:23,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 14 events. 0/14 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 2/14 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-10-15 19:08:23,057 INFO L132 encePairwiseOnDemand]: 18/23 looper letters, 9 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2021-10-15 19:08:23,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 14 transitions, 50 flow [2021-10-15 19:08:23,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:08:23,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:08:23,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2021-10-15 19:08:23,070 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2021-10-15 19:08:23,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 32 transitions. [2021-10-15 19:08:23,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 32 transitions. [2021-10-15 19:08:23,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:08:23,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 32 transitions. [2021-10-15 19:08:23,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:23,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:23,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:23,086 INFO L186 Difference]: Start difference. First operand has 17 places, 19 transitions, 38 flow. Second operand 3 states and 32 transitions. [2021-10-15 19:08:23,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 14 transitions, 50 flow [2021-10-15 19:08:23,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 50 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:08:23,091 INFO L242 Difference]: Finished difference. Result has 17 places, 14 transitions, 32 flow [2021-10-15 19:08:23,093 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=14} [2021-10-15 19:08:23,094 INFO L334 CegarLoopForPetriNet]: 17 programPoint places, 0 predicate places. [2021-10-15 19:08:23,094 INFO L470 AbstractCegarLoop]: Abstraction has has 17 places, 14 transitions, 32 flow [2021-10-15 19:08:23,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:23,095 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:08:23,095 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-15 19:08:23,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-15 19:08:23,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:08:23,308 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-15 19:08:23,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:08:23,309 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2021-10-15 19:08:23,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:08:23,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908297521] [2021-10-15 19:08:23,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:08:23,311 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:08:23,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:08:23,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:08:23,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:08:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:08:23,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:08:23,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:08:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:23,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:08:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:23,436 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:08:23,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908297521] [2021-10-15 19:08:23,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908297521] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:08:23,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:08:23,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-15 19:08:23,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708626429] [2021-10-15 19:08:23,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:08:23,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:08:23,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:08:23,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:08:23,440 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2021-10-15 19:08:23,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:23,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:08:23,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2021-10-15 19:08:23,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:08:23,520 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-10-15 19:08:23,520 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:08:23,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-10-15 19:08:23,521 INFO L132 encePairwiseOnDemand]: 21/23 looper letters, 9 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2021-10-15 19:08:23,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 12 transitions, 48 flow [2021-10-15 19:08:23,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:08:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:08:23,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 29 transitions. [2021-10-15 19:08:23,523 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.42028985507246375 [2021-10-15 19:08:23,523 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 29 transitions. [2021-10-15 19:08:23,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 29 transitions. [2021-10-15 19:08:23,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:08:23,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 29 transitions. [2021-10-15 19:08:23,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:23,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:23,526 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:23,526 INFO L186 Difference]: Start difference. First operand has 17 places, 14 transitions, 32 flow. Second operand 3 states and 29 transitions. [2021-10-15 19:08:23,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 12 transitions, 48 flow [2021-10-15 19:08:23,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 12 transitions, 44 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:08:23,528 INFO L242 Difference]: Finished difference. Result has 15 places, 12 transitions, 26 flow [2021-10-15 19:08:23,529 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=15, PETRI_TRANSITIONS=12} [2021-10-15 19:08:23,529 INFO L334 CegarLoopForPetriNet]: 17 programPoint places, -2 predicate places. [2021-10-15 19:08:23,530 INFO L470 AbstractCegarLoop]: Abstraction has has 15 places, 12 transitions, 26 flow [2021-10-15 19:08:23,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:23,530 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:08:23,530 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:08:23,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:08:23,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:08:23,742 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-15 19:08:23,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:08:23,743 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2021-10-15 19:08:23,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:08:23,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550107070] [2021-10-15 19:08:23,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:08:23,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:08:23,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:08:23,746 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:08:23,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:08:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:08:23,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:08:23,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:08:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:23,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:08:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:23,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:08:23,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550107070] [2021-10-15 19:08:23,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550107070] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:08:23,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:08:23,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-15 19:08:23,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821142123] [2021-10-15 19:08:23,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:08:23,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:08:23,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:08:23,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:08:23,956 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2021-10-15 19:08:23,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 12 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:23,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:08:23,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2021-10-15 19:08:23,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:08:24,064 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-10-15 19:08:24,064 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:08:24,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 10 events. 0/10 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. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-10-15 19:08:24,065 INFO L132 encePairwiseOnDemand]: 20/23 looper letters, 7 selfloop transitions, 2 changer transitions 0/10 dead transitions. [2021-10-15 19:08:24,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 10 transitions, 40 flow [2021-10-15 19:08:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:08:24,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:08:24,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2021-10-15 19:08:24,069 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4057971014492754 [2021-10-15 19:08:24,069 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 28 transitions. [2021-10-15 19:08:24,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 28 transitions. [2021-10-15 19:08:24,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:08:24,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 28 transitions. [2021-10-15 19:08:24,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:24,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:24,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:24,071 INFO L186 Difference]: Start difference. First operand has 15 places, 12 transitions, 26 flow. Second operand 3 states and 28 transitions. [2021-10-15 19:08:24,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 10 transitions, 40 flow [2021-10-15 19:08:24,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 10 transitions, 39 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:08:24,073 INFO L242 Difference]: Finished difference. Result has 14 places, 10 transitions, 25 flow [2021-10-15 19:08:24,074 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=25, PETRI_PLACES=14, PETRI_TRANSITIONS=10} [2021-10-15 19:08:24,074 INFO L334 CegarLoopForPetriNet]: 17 programPoint places, -3 predicate places. [2021-10-15 19:08:24,074 INFO L470 AbstractCegarLoop]: Abstraction has has 14 places, 10 transitions, 25 flow [2021-10-15 19:08:24,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:24,075 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:08:24,075 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:08:24,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:08:24,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:08:24,280 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-15 19:08:24,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:08:24,281 INFO L82 PathProgramCache]: Analyzing trace with hash -904234870, now seen corresponding path program 1 times [2021-10-15 19:08:24,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:08:24,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710546117] [2021-10-15 19:08:24,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:08:24,282 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:08:24,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:08:24,292 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:08:24,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 19:08:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:08:24,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:08:24,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:08:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:24,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:08:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:08:24,499 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:08:24,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710546117] [2021-10-15 19:08:24,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710546117] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:08:24,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:08:24,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-15 19:08:24,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953303291] [2021-10-15 19:08:24,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:08:24,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:08:24,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:08:24,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:08:24,509 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2021-10-15 19:08:24,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 25 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:24,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:08:24,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2021-10-15 19:08:24,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:08:24,594 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-10-15 19:08:24,594 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:08:24,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 8 events. 0/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-10-15 19:08:24,594 INFO L132 encePairwiseOnDemand]: 21/23 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2021-10-15 19:08:24,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 8 transitions, 37 flow [2021-10-15 19:08:24,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:08:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:08:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2021-10-15 19:08:24,597 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2021-10-15 19:08:24,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 27 transitions. [2021-10-15 19:08:24,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 27 transitions. [2021-10-15 19:08:24,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:08:24,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 27 transitions. [2021-10-15 19:08:24,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:24,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:24,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:24,599 INFO L186 Difference]: Start difference. First operand has 14 places, 10 transitions, 25 flow. Second operand 3 states and 27 transitions. [2021-10-15 19:08:24,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 8 transitions, 37 flow [2021-10-15 19:08:24,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 8 transitions, 33 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:08:24,600 INFO L242 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2021-10-15 19:08:24,600 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2021-10-15 19:08:24,600 INFO L334 CegarLoopForPetriNet]: 17 programPoint places, -5 predicate places. [2021-10-15 19:08:24,600 INFO L470 AbstractCegarLoop]: Abstraction has has 12 places, 0 transitions, 0 flow [2021-10-15 19:08:24,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:08:24,603 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:08:24,604 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:08:24,604 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:08:24,604 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:08:24,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:08:24,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:08:24,821 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:08:24,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:08:24 BoogieIcfgContainer [2021-10-15 19:08:24,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:08:24,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:08:24,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:08:24,824 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:08:24,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:08:22" (3/4) ... [2021-10-15 19:08:24,827 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:08:24,848 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-15 19:08:24,849 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:08:24,849 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 19:08:24,849 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:08:24,877 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:08:24,877 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:08:24,879 INFO L168 Benchmark]: Toolchain (without parser) took 3817.36 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 34.9 MB in the beginning and 44.7 MB in the end (delta: -9.7 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:08:24,880 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 56.6 MB. Free memory is still 37.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:08:24,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.98 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 40.0 MB in the end (delta: -5.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:08:24,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.86 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 40.0 MB in the beginning and 61.5 MB in the end (delta: -21.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:08:24,881 INFO L168 Benchmark]: Boogie Preprocessor took 40.02 ms. Allocated memory is still 77.6 MB. Free memory was 61.5 MB in the beginning and 60.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:08:24,882 INFO L168 Benchmark]: RCFGBuilder took 646.86 ms. Allocated memory is still 77.6 MB. Free memory was 60.3 MB in the beginning and 51.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:08:24,882 INFO L168 Benchmark]: TraceAbstraction took 2698.48 ms. Allocated memory is still 77.6 MB. Free memory was 50.6 MB in the beginning and 47.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:08:24,883 INFO L168 Benchmark]: Witness Printer took 53.33 ms. Allocated memory is still 77.6 MB. Free memory was 47.2 MB in the beginning and 44.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:08:24,886 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 56.6 MB. Free memory is still 37.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.98 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 40.0 MB in the end (delta: -5.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.86 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 40.0 MB in the beginning and 61.5 MB in the end (delta: -21.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.02 ms. Allocated memory is still 77.6 MB. Free memory was 61.5 MB in the beginning and 60.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 646.86 ms. Allocated memory is still 77.6 MB. Free memory was 60.3 MB in the beginning and 51.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2698.48 ms. Allocated memory is still 77.6 MB. Free memory was 50.6 MB in the beginning and 47.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Witness Printer took 53.33 ms. Allocated memory is still 77.6 MB. Free memory was 47.2 MB in the beginning and 44.7 MB in the end (delta: 2.5 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 23]: 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, 20 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2590.7ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 458.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 46.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25 SDtfs, 11 SDslu, 0 SDs, 0 SdLazy, 36 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 297.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 318.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 12, 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: 48.4ms SsaConstructionTime, 96.4ms SatisfiabilityAnalysisTime, 824.3ms InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 8 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:08:24,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e5849-b1e1-4754-849b-544e10c053ff/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...