./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.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_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/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_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/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_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/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 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 ........................................................................................................................................................................................................................................................................................................................ 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_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/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_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/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_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/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 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:17:04,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:17:04,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:17:04,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:17:04,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:17:04,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:17:04,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:17:04,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:17:04,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:17:04,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:17:04,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:17:04,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:17:04,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:17:04,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:17:04,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:17:04,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:17:04,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:17:04,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:17:04,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:17:04,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:17:04,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:17:04,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:17:04,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:17:04,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:17:04,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:17:04,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:17:04,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:17:04,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:17:04,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:17:04,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:17:04,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:17:04,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:17:04,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:17:04,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:17:04,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:17:04,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:17:04,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:17:04,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:17:04,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:17:04,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:17:04,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:17:04,236 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:17:04,264 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:17:04,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:17:04,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:17:04,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:17:04,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:17:04,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:17:04,267 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:17:04,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:17:04,268 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:17:04,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:17:04,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:17:04,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:17:04,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:17:04,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:17:04,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:17:04,271 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:17:04,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:17:04,289 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:17:04,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:17:04,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:17:04,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:17:04,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:17:04,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:17:04,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:17:04,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:17:04,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:17:04,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:17:04,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:17:04,292 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:17:04,294 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:17:04,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:17:04,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:17:04,295 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_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2021-10-15 20:17:04,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:17:04,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:17:04,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:17:04,583 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:17:04,584 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:17:04,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2021-10-15 20:17:04,650 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/data/dc0818159/aaf48401d13e42238ccbfec1dad0a640/FLAGc5fff2a24 [2021-10-15 20:17:05,157 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:17:05,163 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2021-10-15 20:17:05,179 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/data/dc0818159/aaf48401d13e42238ccbfec1dad0a640/FLAGc5fff2a24 [2021-10-15 20:17:05,493 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/data/dc0818159/aaf48401d13e42238ccbfec1dad0a640 [2021-10-15 20:17:05,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:17:05,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:17:05,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:17:05,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:17:05,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:17:05,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:17:05" (1/1) ... [2021-10-15 20:17:05,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d2f9dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:05, skipping insertion in model container [2021-10-15 20:17:05,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:17:05" (1/1) ... [2021-10-15 20:17:05,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:17:05,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:17:05,759 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_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c[3225,3238] [2021-10-15 20:17:05,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:17:05,770 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:17:05,810 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_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c[3225,3238] [2021-10-15 20:17:05,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:17:05,833 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:17:05,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:05 WrapperNode [2021-10-15 20:17:05,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:17:05,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:17:05,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:17:05,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:17:05,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:05" (1/1) ... [2021-10-15 20:17:05,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:05" (1/1) ... [2021-10-15 20:17:05,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:17:05,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:17:05,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:17:05,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:17:05,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:05" (1/1) ... [2021-10-15 20:17:05,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:05" (1/1) ... [2021-10-15 20:17:05,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:05" (1/1) ... [2021-10-15 20:17:05,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:05" (1/1) ... [2021-10-15 20:17:05,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:05" (1/1) ... [2021-10-15 20:17:05,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:05" (1/1) ... [2021-10-15 20:17:05,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:05" (1/1) ... [2021-10-15 20:17:05,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:17:05,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:17:05,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:17:05,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:17:05,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:05" (1/1) ... [2021-10-15 20:17:06,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:17:06,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:17:06,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:17:06,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:17:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:17:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:17:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-15 20:17:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 20:17:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-15 20:17:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:17:06,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:17:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 20:17:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 20:17:06,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:17:06,479 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-15 20:17:06,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:17:06 BoogieIcfgContainer [2021-10-15 20:17:06,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:17:06,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:17:06,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:17:06,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:17:06,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:17:05" (1/3) ... [2021-10-15 20:17:06,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5735e4c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:17:06, skipping insertion in model container [2021-10-15 20:17:06,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:05" (2/3) ... [2021-10-15 20:17:06,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5735e4c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:17:06, skipping insertion in model container [2021-10-15 20:17:06,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:17:06" (3/3) ... [2021-10-15 20:17:06,491 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2021-10-15 20:17:06,496 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:17:06,497 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:17:06,546 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:17:06,554 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 20:17:06,563 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:17:06,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 84 transitions, 168 flow [2021-10-15 20:17:06,631 INFO L129 PetriNetUnfolder]: 32/84 cut-off events. [2021-10-15 20:17:06,631 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:17:06,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 84 events. 32/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 162 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 20:17:06,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 84 transitions, 168 flow [2021-10-15 20:17:06,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 80 transitions, 160 flow [2021-10-15 20:17:06,646 INFO L129 PetriNetUnfolder]: 11/32 cut-off events. [2021-10-15 20:17:06,647 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:17:06,647 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:06,648 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:17:06,648 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:17:06,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:06,654 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2021-10-15 20:17:06,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:17:06,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859663084] [2021-10-15 20:17:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:06,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:17:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:06,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:17:06,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859663084] [2021-10-15 20:17:06,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859663084] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:17:06,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:17:06,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:17:06,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200789419] [2021-10-15 20:17:06,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:17:06,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:17:06,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:17:06,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:17:06,837 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 84 [2021-10-15 20:17:06,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 80 transitions, 160 flow. Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:06,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:06,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 84 [2021-10-15 20:17:06,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:06,857 INFO L129 PetriNetUnfolder]: 21/70 cut-off events. [2021-10-15 20:17:06,860 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:17:06,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 70 events. 21/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 10/59 useless extension candidates. Maximal degree in co-relation 70. Up to 5 conditions per place. [2021-10-15 20:17:06,865 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 0 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2021-10-15 20:17:06,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 140 flow [2021-10-15 20:17:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:17:06,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 20:17:06,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 156 transitions. [2021-10-15 20:17:06,880 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9285714285714286 [2021-10-15 20:17:06,881 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 156 transitions. [2021-10-15 20:17:06,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 156 transitions. [2021-10-15 20:17:06,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:06,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 156 transitions. [2021-10-15 20:17:06,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:06,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:06,915 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:06,917 INFO L186 Difference]: Start difference. First operand has 50 places, 80 transitions, 160 flow. Second operand 2 states and 156 transitions. [2021-10-15 20:17:06,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 140 flow [2021-10-15 20:17:06,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 140 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:17:06,934 INFO L242 Difference]: Finished difference. Result has 51 places, 70 transitions, 140 flow [2021-10-15 20:17:06,936 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=140, PETRI_PLACES=51, PETRI_TRANSITIONS=70} [2021-10-15 20:17:06,938 INFO L334 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2021-10-15 20:17:06,939 INFO L470 AbstractCegarLoop]: Abstraction has has 51 places, 70 transitions, 140 flow [2021-10-15 20:17:06,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:06,940 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:06,940 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:17:06,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:17:06,941 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:17:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:06,942 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2021-10-15 20:17:06,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:17:06,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659711298] [2021-10-15 20:17:06,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:06,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:17:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:17:07,034 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:17:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:17:07,114 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:17:07,114 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:17:07,116 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:07,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:17:07,128 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:17:07,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:17:07 BoogieIcfgContainer [2021-10-15 20:17:07,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:17:07,168 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:17:07,168 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:17:07,169 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:17:07,169 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:17:06" (3/4) ... [2021-10-15 20:17:07,175 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 20:17:07,175 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:17:07,178 INFO L168 Benchmark]: Toolchain (without parser) took 1678.78 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 64.8 MB in the beginning and 103.7 MB in the end (delta: -38.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:17:07,179 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 109.1 MB. Free memory is still 81.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:17:07,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.46 ms. Allocated memory is still 109.1 MB. Free memory was 64.5 MB in the beginning and 80.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:07,182 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.12 ms. Allocated memory is still 109.1 MB. Free memory was 80.1 MB in the beginning and 78.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:07,184 INFO L168 Benchmark]: Boogie Preprocessor took 68.62 ms. Allocated memory is still 109.1 MB. Free memory was 78.0 MB in the beginning and 76.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:17:07,189 INFO L168 Benchmark]: RCFGBuilder took 483.61 ms. Allocated memory is still 109.1 MB. Free memory was 76.2 MB in the beginning and 59.7 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:07,190 INFO L168 Benchmark]: TraceAbstraction took 681.54 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 59.4 MB in the beginning and 104.2 MB in the end (delta: -44.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:17:07,191 INFO L168 Benchmark]: Witness Printer took 7.06 ms. Allocated memory is still 136.3 MB. Free memory was 104.2 MB in the beginning and 103.7 MB in the end (delta: 467.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:17:07,202 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 109.1 MB. Free memory is still 81.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.46 ms. Allocated memory is still 109.1 MB. Free memory was 64.5 MB in the beginning and 80.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.12 ms. Allocated memory is still 109.1 MB. Free memory was 80.1 MB in the beginning and 78.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.62 ms. Allocated memory is still 109.1 MB. Free memory was 78.0 MB in the beginning and 76.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 483.61 ms. Allocated memory is still 109.1 MB. Free memory was 76.2 MB in the beginning and 59.7 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 681.54 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 59.4 MB in the beginning and 104.2 MB in the end (delta: -44.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 7.06 ms. Allocated memory is still 136.3 MB. Free memory was 104.2 MB in the beginning and 103.7 MB in the end (delta: 467.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 156]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 151, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 155. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L156] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 581.3ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 108.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 76.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 0 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=160occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.2ms SsaConstructionTime, 88.2ms SatisfiabilityAnalysisTime, 48.6ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-15 20:17:07,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:17:09,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:17:09,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:17:09,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:17:09,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:17:09,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:17:09,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:17:09,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:17:09,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:17:09,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:17:09,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:17:09,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:17:09,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:17:09,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:17:09,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:17:09,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:17:09,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:17:09,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:17:09,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:17:09,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:17:09,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:17:09,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:17:09,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:17:09,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:17:09,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:17:09,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:17:09,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:17:09,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:17:09,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:17:09,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:17:09,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:17:09,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:17:09,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:17:09,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:17:09,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:17:09,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:17:09,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:17:09,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:17:09,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:17:09,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:17:09,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:17:09,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 20:17:09,808 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:17:09,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:17:09,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:17:09,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:17:09,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:17:09,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:17:09,810 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:17:09,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:17:09,811 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:17:09,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:17:09,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:17:09,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:17:09,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:17:09,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:17:09,812 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 20:17:09,812 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 20:17:09,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:17:09,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:17:09,812 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:17:09,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:17:09,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:17:09,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:17:09,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:17:09,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:17:09,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:17:09,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:17:09,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:17:09,813 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 20:17:09,814 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 20:17:09,814 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:17:09,814 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:17:09,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:17:09,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:17:09,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 20:17:09,815 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_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2021-10-15 20:17:10,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:17:10,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:17:10,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:17:10,243 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:17:10,244 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:17:10,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2021-10-15 20:17:10,322 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/data/210c91e1c/34860d1b6c9846df9312fbcff424f7ad/FLAG8a350f72a [2021-10-15 20:17:10,887 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:17:10,888 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2021-10-15 20:17:10,898 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/data/210c91e1c/34860d1b6c9846df9312fbcff424f7ad/FLAG8a350f72a [2021-10-15 20:17:11,256 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/data/210c91e1c/34860d1b6c9846df9312fbcff424f7ad [2021-10-15 20:17:11,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:17:11,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:17:11,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:17:11,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:17:11,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:17:11,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:17:11" (1/1) ... [2021-10-15 20:17:11,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28bf2bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:11, skipping insertion in model container [2021-10-15 20:17:11,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:17:11" (1/1) ... [2021-10-15 20:17:11,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:17:11,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:17:11,562 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_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c[3225,3238] [2021-10-15 20:17:11,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:17:11,577 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:17:11,673 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_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c[3225,3238] [2021-10-15 20:17:11,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:17:11,692 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:17:11,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:11 WrapperNode [2021-10-15 20:17:11,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:17:11,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:17:11,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:17:11,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:17:11,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:11" (1/1) ... [2021-10-15 20:17:11,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:11" (1/1) ... [2021-10-15 20:17:11,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:17:11,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:17:11,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:17:11,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:17:11,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:11" (1/1) ... [2021-10-15 20:17:11,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:11" (1/1) ... [2021-10-15 20:17:11,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:11" (1/1) ... [2021-10-15 20:17:11,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:11" (1/1) ... [2021-10-15 20:17:11,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:11" (1/1) ... [2021-10-15 20:17:11,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:11" (1/1) ... [2021-10-15 20:17:11,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:11" (1/1) ... [2021-10-15 20:17:11,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:17:11,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:17:11,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:17:11,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:17:11,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:11" (1/1) ... [2021-10-15 20:17:11,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:17:11,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:17:11,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:17:11,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:17:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-15 20:17:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-15 20:17:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 20:17:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:17:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 20:17:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:17:11,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:17:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 20:17:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 20:17:17,049 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:17:17,050 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-15 20:17:17,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:17:17 BoogieIcfgContainer [2021-10-15 20:17:17,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:17:17,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:17:17,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:17:17,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:17:17,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:17:11" (1/3) ... [2021-10-15 20:17:17,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d7825b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:17:17, skipping insertion in model container [2021-10-15 20:17:17,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:17:11" (2/3) ... [2021-10-15 20:17:17,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d7825b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:17:17, skipping insertion in model container [2021-10-15 20:17:17,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:17:17" (3/3) ... [2021-10-15 20:17:17,060 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2021-10-15 20:17:17,066 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:17:17,066 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:17:17,115 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:17:17,122 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 20:17:17,123 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:17:17,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 84 transitions, 168 flow [2021-10-15 20:17:17,166 INFO L129 PetriNetUnfolder]: 32/84 cut-off events. [2021-10-15 20:17:17,167 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:17:17,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 84 events. 32/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 162 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 20:17:17,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 84 transitions, 168 flow [2021-10-15 20:17:17,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 80 transitions, 160 flow [2021-10-15 20:17:17,180 INFO L129 PetriNetUnfolder]: 11/32 cut-off events. [2021-10-15 20:17:17,180 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:17:17,181 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:17,182 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:17:17,182 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:17:17,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:17,188 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2021-10-15 20:17:17,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:17:17,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024042493] [2021-10-15 20:17:17,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:17,201 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:17:17,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:17:17,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:17:17,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 20:17:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:17,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 20:17:17,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:17:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:17,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:17:17,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:17,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:17:17,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024042493] [2021-10-15 20:17:17,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024042493] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:17:17,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:17:17,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 20:17:17,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609085908] [2021-10-15 20:17:17,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:17:17,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:17:17,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:17:17,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:17:17,852 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 84 [2021-10-15 20:17:17,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 80 transitions, 160 flow. Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:17,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:17,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 84 [2021-10-15 20:17:17,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:17,884 INFO L129 PetriNetUnfolder]: 21/70 cut-off events. [2021-10-15 20:17:17,884 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:17:17,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 70 events. 21/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 10/59 useless extension candidates. Maximal degree in co-relation 70. Up to 5 conditions per place. [2021-10-15 20:17:17,887 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 0 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2021-10-15 20:17:17,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 140 flow [2021-10-15 20:17:17,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:17:17,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 20:17:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 156 transitions. [2021-10-15 20:17:17,899 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9285714285714286 [2021-10-15 20:17:17,900 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 156 transitions. [2021-10-15 20:17:17,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 156 transitions. [2021-10-15 20:17:17,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:17,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 156 transitions. [2021-10-15 20:17:17,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:17,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:17,911 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:17,913 INFO L186 Difference]: Start difference. First operand has 50 places, 80 transitions, 160 flow. Second operand 2 states and 156 transitions. [2021-10-15 20:17:17,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 140 flow [2021-10-15 20:17:17,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 140 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:17:17,920 INFO L242 Difference]: Finished difference. Result has 51 places, 70 transitions, 140 flow [2021-10-15 20:17:17,922 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=140, PETRI_PLACES=51, PETRI_TRANSITIONS=70} [2021-10-15 20:17:17,923 INFO L334 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2021-10-15 20:17:17,923 INFO L470 AbstractCegarLoop]: Abstraction has has 51 places, 70 transitions, 140 flow [2021-10-15 20:17:17,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:17,924 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:17,924 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:17:17,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:17:18,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:17:18,125 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:17:18,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:18,125 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2021-10-15 20:17:18,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:17:18,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885015686] [2021-10-15 20:17:18,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:18,126 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:17:18,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:17:18,130 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:17:18,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 20:17:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:18,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 20:17:18,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:17:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:18,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:17:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:18,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:17:18,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885015686] [2021-10-15 20:17:18,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885015686] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:17:18,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:17:18,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-15 20:17:18,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994781823] [2021-10-15 20:17:18,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:17:18,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:17:18,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:17:18,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:17:18,983 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 84 [2021-10-15 20:17:18,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 70 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 42.0) internal successors, (252), 6 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:18,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:18,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 84 [2021-10-15 20:17:18,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:19,925 INFO L129 PetriNetUnfolder]: 2/18 cut-off events. [2021-10-15 20:17:19,925 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:17:19,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 18 events. 2/18 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 25. Up to 6 conditions per place. [2021-10-15 20:17:19,926 INFO L132 encePairwiseOnDemand]: 79/84 looper letters, 5 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2021-10-15 20:17:19,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 18 transitions, 50 flow [2021-10-15 20:17:19,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:17:19,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:17:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2021-10-15 20:17:19,930 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2021-10-15 20:17:19,930 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 174 transitions. [2021-10-15 20:17:19,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 174 transitions. [2021-10-15 20:17:19,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:19,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 174 transitions. [2021-10-15 20:17:19,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:19,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:19,936 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:19,936 INFO L186 Difference]: Start difference. First operand has 51 places, 70 transitions, 140 flow. Second operand 4 states and 174 transitions. [2021-10-15 20:17:19,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 18 transitions, 50 flow [2021-10-15 20:17:19,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 18 transitions, 50 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:17:19,938 INFO L242 Difference]: Finished difference. Result has 21 places, 18 transitions, 40 flow [2021-10-15 20:17:19,938 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=40, PETRI_PLACES=21, PETRI_TRANSITIONS=18} [2021-10-15 20:17:19,939 INFO L334 CegarLoopForPetriNet]: 50 programPoint places, -29 predicate places. [2021-10-15 20:17:19,939 INFO L470 AbstractCegarLoop]: Abstraction has has 21 places, 18 transitions, 40 flow [2021-10-15 20:17:19,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.0) internal successors, (252), 6 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:19,940 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:19,940 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:17:19,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-15 20:17:20,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:17:20,158 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:17:20,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:20,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2021-10-15 20:17:20,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:17:20,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154094391] [2021-10-15 20:17:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:20,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:17:20,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:17:20,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:17:20,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 20:17:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:20,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 20:17:20,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:17:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:20,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:17:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:20,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:17:20,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154094391] [2021-10-15 20:17:20,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154094391] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:17:20,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:17:20,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-15 20:17:20,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594929524] [2021-10-15 20:17:20,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 20:17:20,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:17:20,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 20:17:20,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-15 20:17:20,701 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 84 [2021-10-15 20:17:20,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 40 flow. Second operand has 7 states, 7 states have (on average 62.42857142857143) internal successors, (437), 7 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:20,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:20,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 84 [2021-10-15 20:17:20,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:23,736 INFO L129 PetriNetUnfolder]: 1/26 cut-off events. [2021-10-15 20:17:23,736 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 20:17:23,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 26 events. 1/26 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 41. Up to 6 conditions per place. [2021-10-15 20:17:23,737 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 6 selfloop transitions, 7 changer transitions 0/22 dead transitions. [2021-10-15 20:17:23,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 74 flow [2021-10-15 20:17:23,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:17:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:17:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 380 transitions. [2021-10-15 20:17:23,750 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.753968253968254 [2021-10-15 20:17:23,751 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 380 transitions. [2021-10-15 20:17:23,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 380 transitions. [2021-10-15 20:17:23,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:23,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 380 transitions. [2021-10-15 20:17:23,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:23,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:23,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:23,757 INFO L186 Difference]: Start difference. First operand has 21 places, 18 transitions, 40 flow. Second operand 6 states and 380 transitions. [2021-10-15 20:17:23,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 22 transitions, 74 flow [2021-10-15 20:17:23,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 22 transitions, 71 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:17:23,760 INFO L242 Difference]: Finished difference. Result has 27 places, 21 transitions, 72 flow [2021-10-15 20:17:23,760 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=72, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2021-10-15 20:17:23,761 INFO L334 CegarLoopForPetriNet]: 50 programPoint places, -23 predicate places. [2021-10-15 20:17:23,761 INFO L470 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 72 flow [2021-10-15 20:17:23,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.42857142857143) internal successors, (437), 7 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:23,762 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:23,762 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:17:23,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 20:17:23,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:17:23,974 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:17:23,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:23,975 INFO L82 PathProgramCache]: Analyzing trace with hash 239121058, now seen corresponding path program 1 times [2021-10-15 20:17:23,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:17:23,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554486962] [2021-10-15 20:17:23,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:23,976 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:17:23,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:17:23,976 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:17:23,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 20:17:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:24,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 20:17:24,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:17:25,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2021-10-15 20:17:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:25,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:17:25,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-10-15 20:17:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:25,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:17:25,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554486962] [2021-10-15 20:17:25,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554486962] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:17:25,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:17:25,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-15 20:17:25,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460333930] [2021-10-15 20:17:25,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:17:25,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:17:25,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:17:25,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:17:25,646 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 84 [2021-10-15 20:17:25,647 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 72 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:25,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:25,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 84 [2021-10-15 20:17:25,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:25,752 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-10-15 20:17:25,753 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-15 20:17:25,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 15 events. 0/15 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-10-15 20:17:25,753 INFO L132 encePairwiseOnDemand]: 81/84 looper letters, 3 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2021-10-15 20:17:25,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 15 transitions, 57 flow [2021-10-15 20:17:25,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:17:25,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:17:25,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2021-10-15 20:17:25,756 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2021-10-15 20:17:25,756 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 146 transitions. [2021-10-15 20:17:25,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 146 transitions. [2021-10-15 20:17:25,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:25,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 146 transitions. [2021-10-15 20:17:25,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:25,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:25,760 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:25,760 INFO L186 Difference]: Start difference. First operand has 27 places, 21 transitions, 72 flow. Second operand 4 states and 146 transitions. [2021-10-15 20:17:25,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 15 transitions, 57 flow [2021-10-15 20:17:25,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 15 transitions, 41 flow, removed 1 selfloop flow, removed 7 redundant places. [2021-10-15 20:17:25,762 INFO L242 Difference]: Finished difference. Result has 21 places, 15 transitions, 35 flow [2021-10-15 20:17:25,762 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=35, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2021-10-15 20:17:25,763 INFO L334 CegarLoopForPetriNet]: 50 programPoint places, -29 predicate places. [2021-10-15 20:17:25,763 INFO L470 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 35 flow [2021-10-15 20:17:25,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:25,763 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:25,764 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:17:25,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 20:17:25,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:17:25,978 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:17:25,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:25,982 INFO L82 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2021-10-15 20:17:25,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:17:25,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868719197] [2021-10-15 20:17:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:25,982 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:17:25,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:17:25,985 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:17:25,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-15 20:17:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:26,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-15 20:17:26,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:17:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:26,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:17:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:27,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:17:27,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868719197] [2021-10-15 20:17:27,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868719197] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:17:27,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:17:27,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-10-15 20:17:27,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896662733] [2021-10-15 20:17:27,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-15 20:17:27,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:17:27,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-15 20:17:27,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-10-15 20:17:27,954 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 84 [2021-10-15 20:17:27,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 35 flow. Second operand has 14 states, 14 states have (on average 60.142857142857146) internal successors, (842), 14 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:27,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:27,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 84 [2021-10-15 20:17:27,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:28,595 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-10-15 20:17:28,595 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 20:17:28,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 13 events. 0/13 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 20:17:28,595 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-10-15 20:17:28,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 13 transitions, 47 flow [2021-10-15 20:17:28,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 20:17:28,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 20:17:28,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 481 transitions. [2021-10-15 20:17:28,598 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7157738095238095 [2021-10-15 20:17:28,598 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 481 transitions. [2021-10-15 20:17:28,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 481 transitions. [2021-10-15 20:17:28,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:28,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 481 transitions. [2021-10-15 20:17:28,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 60.125) internal successors, (481), 8 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:28,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:28,605 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:28,605 INFO L186 Difference]: Start difference. First operand has 21 places, 15 transitions, 35 flow. Second operand 8 states and 481 transitions. [2021-10-15 20:17:28,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 13 transitions, 47 flow [2021-10-15 20:17:28,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 13 transitions, 44 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:17:28,606 INFO L242 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2021-10-15 20:17:28,607 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2021-10-15 20:17:28,607 INFO L334 CegarLoopForPetriNet]: 50 programPoint places, -26 predicate places. [2021-10-15 20:17:28,607 INFO L470 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2021-10-15 20:17:28,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 60.142857142857146) internal successors, (842), 14 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:28,623 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:28,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-15 20:17:28,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:17:28,838 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:17:28,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:17:28 BoogieIcfgContainer [2021-10-15 20:17:28,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:17:28,843 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:17:28,843 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:17:28,843 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:17:28,844 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:17:17" (3/4) ... [2021-10-15 20:17:28,848 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 20:17:28,877 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-15 20:17:28,878 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-15 20:17:28,878 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:17:28,879 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:17:28,952 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:17:28,952 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:17:28,954 INFO L168 Benchmark]: Toolchain (without parser) took 17685.16 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 51.5 MB in the beginning and 53.0 MB in the end (delta: -1.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:28,954 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 69.2 MB. Free memory was 51.2 MB in the beginning and 51.2 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:17:28,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.57 ms. Allocated memory is still 69.2 MB. Free memory was 51.3 MB in the beginning and 51.1 MB in the end (delta: 162.3 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:28,955 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.13 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 49.0 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:17:28,956 INFO L168 Benchmark]: Boogie Preprocessor took 39.36 ms. Allocated memory is still 69.2 MB. Free memory was 49.0 MB in the beginning and 46.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:28,957 INFO L168 Benchmark]: RCFGBuilder took 5268.40 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 46.9 MB in the beginning and 64.3 MB in the end (delta: -17.4 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:28,957 INFO L168 Benchmark]: TraceAbstraction took 11788.33 ms. Allocated memory is still 83.9 MB. Free memory was 63.6 MB in the beginning and 57.7 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:28,957 INFO L168 Benchmark]: Witness Printer took 109.40 ms. Allocated memory is still 83.9 MB. Free memory was 57.7 MB in the beginning and 53.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:28,960 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 69.2 MB. Free memory was 51.2 MB in the beginning and 51.2 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 422.57 ms. Allocated memory is still 69.2 MB. Free memory was 51.3 MB in the beginning and 51.1 MB in the end (delta: 162.3 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.13 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 49.0 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.36 ms. Allocated memory is still 69.2 MB. Free memory was 49.0 MB in the beginning and 46.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5268.40 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 46.9 MB in the beginning and 64.3 MB in the end (delta: -17.4 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11788.33 ms. Allocated memory is still 83.9 MB. Free memory was 63.6 MB in the beginning and 57.7 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Witness Printer took 109.40 ms. Allocated memory is still 83.9 MB. Free memory was 57.7 MB in the beginning and 53.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 156]: 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, 53 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11726.7ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 4873.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 52.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 52 SDslu, 22 SDs, 0 SdLazy, 67 SolverSat, 12 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3727.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2304.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=160occurred in iteration=0, InterpolantAutomatonStates: 24, 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: 73.9ms SsaConstructionTime, 1578.1ms SatisfiabilityAnalysisTime, 3747.3ms InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 100 ConstructedInterpolants, 18 QuantifiedInterpolants, 557 SizeOfPredicates, 29 NumberOfNonLiveVariables, 237 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 20:17:29,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f38704f3-982f-4c8c-96ea-6ada7a1ffdd0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...