./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/zonotope_tight.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_tight.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be --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 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 .................................................................................................................................................................................................................................................................................... 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_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_tight.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be --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 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 ......................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:11:53,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:11:53,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:11:53,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:11:53,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:11:53,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:11:53,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:11:53,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:11:53,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:11:53,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:11:53,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:11:53,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:11:53,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:11:53,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:11:53,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:11:53,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:11:53,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:11:53,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:11:53,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:11:53,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:11:53,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:11:53,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:11:53,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:11:53,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:11:53,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:11:53,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:11:53,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:11:53,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:11:53,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:11:53,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:11:53,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:11:53,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:11:53,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:11:53,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:11:53,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:11:53,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:11:53,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:11:53,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:11:53,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:11:53,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:11:53,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:11:53,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:11:53,927 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:11:53,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:11:53,928 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:11:53,929 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:11:53,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:11:53,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:11:53,937 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:11:53,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:11:53,937 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:11:53,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:11:53,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:11:53,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:11:53,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:11:53,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:11:53,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:11:53,940 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:11:53,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:11:53,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:11:53,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:11:53,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:11:53,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:11:53,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:11:53,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:11:53,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:11:53,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:11:53,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:11:53,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:11:53,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:11:53,943 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:11:53,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:11:53,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:11:53,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:11:53,946 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_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 [2021-10-21 20:11:54,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:11:54,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:11:54,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:11:54,260 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:11:54,262 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:11:54,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-benchs/zonotope_tight.c [2021-10-21 20:11:54,332 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/data/cb1abcb50/6482302208b543a7a2abea2772de2da1/FLAG174479ef9 [2021-10-21 20:11:54,755 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:11:54,755 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/sv-benchmarks/c/float-benchs/zonotope_tight.c [2021-10-21 20:11:54,782 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/data/cb1abcb50/6482302208b543a7a2abea2772de2da1/FLAG174479ef9 [2021-10-21 20:11:55,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/data/cb1abcb50/6482302208b543a7a2abea2772de2da1 [2021-10-21 20:11:55,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:11:55,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:11:55,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:11:55,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:11:55,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:11:55,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:11:55" (1/1) ... [2021-10-21 20:11:55,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3bc734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:55, skipping insertion in model container [2021-10-21 20:11:55,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:11:55" (1/1) ... [2021-10-21 20:11:55,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:11:55,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:11:55,377 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_1f231513-c1c9-4b1f-9901-acb98bef7d6c/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2021-10-21 20:11:55,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:11:55,402 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:11:55,415 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_1f231513-c1c9-4b1f-9901-acb98bef7d6c/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2021-10-21 20:11:55,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:11:55,433 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:11:55,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:55 WrapperNode [2021-10-21 20:11:55,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:11:55,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:11:55,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:11:55,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:11:55,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:55" (1/1) ... [2021-10-21 20:11:55,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:55" (1/1) ... [2021-10-21 20:11:55,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:11:55,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:11:55,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:11:55,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:11:55,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:55" (1/1) ... [2021-10-21 20:11:55,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:55" (1/1) ... [2021-10-21 20:11:55,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:55" (1/1) ... [2021-10-21 20:11:55,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:55" (1/1) ... [2021-10-21 20:11:55,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:55" (1/1) ... [2021-10-21 20:11:55,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:55" (1/1) ... [2021-10-21 20:11:55,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:55" (1/1) ... [2021-10-21 20:11:55,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:11:55,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:11:55,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:11:55,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:11:55,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:55" (1/1) ... [2021-10-21 20:11:55,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:11:55,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:11:55,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:11:55,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:11:55,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:11:55,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:11:55,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:11:55,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:11:55,710 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:11:55,711 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 20:11:55,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:11:55 BoogieIcfgContainer [2021-10-21 20:11:55,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:11:55,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:11:55,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:11:55,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:11:55,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:11:55" (1/3) ... [2021-10-21 20:11:55,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5908d041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:11:55, skipping insertion in model container [2021-10-21 20:11:55,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:11:55" (2/3) ... [2021-10-21 20:11:55,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5908d041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:11:55, skipping insertion in model container [2021-10-21 20:11:55,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:11:55" (3/3) ... [2021-10-21 20:11:55,720 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2021-10-21 20:11:55,726 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:11:55,726 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:11:55,772 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:11:55,779 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, mAutomataTypeConcurrency=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 [2021-10-21 20:11:55,779 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:11:55,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-10-21 20:11:55,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:11:55,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:11:55,799 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:11:55,799 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:11:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:11:55,805 INFO L82 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2021-10-21 20:11:55,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:11:55,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385933534] [2021-10-21 20:11:55,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:11:55,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:11:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:11:55,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:11:55,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:11:55,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385933534] [2021-10-21 20:11:55,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385933534] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:11:55,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:11:55,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:11:55,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684881463] [2021-10-21 20:11:55,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:11:55,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:11:55,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:11:55,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:11:55,996 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-21 20:11:56,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:11:56,009 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-10-21 20:11:56,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:11:56,011 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) Word has length 8 [2021-10-21 20:11:56,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:11:56,019 INFO L225 Difference]: With dead ends: 23 [2021-10-21 20:11:56,019 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 20:11:56,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:11:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 20:11:56,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 20:11:56,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-10-21 20:11:56,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-21 20:11:56,051 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2021-10-21 20:11:56,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:11:56,052 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-21 20:11:56,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-21 20:11:56,052 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-21 20:11:56,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:11:56,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:11:56,053 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:11:56,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:11:56,054 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:11:56,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:11:56,055 INFO L82 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2021-10-21 20:11:56,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:11:56,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447910762] [2021-10-21 20:11:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:11:56,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:11:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:11:56,108 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:11:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:11:56,184 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:11:56,186 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:11:56,223 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:11:56,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:11:56,231 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:11:56,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:11:56 BoogieIcfgContainer [2021-10-21 20:11:56,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:11:56,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:11:56,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:11:56,267 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:11:56,268 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:11:55" (3/4) ... [2021-10-21 20:11:56,272 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:11:56,272 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:11:56,276 INFO L168 Benchmark]: Toolchain (without parser) took 1098.64 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 90.9 MB in the beginning and 119.1 MB in the end (delta: -28.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:11:56,277 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 119.5 MB. Free memory is still 72.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:11:56,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.67 ms. Allocated memory is still 119.5 MB. Free memory was 90.6 MB in the beginning and 94.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:11:56,281 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.58 ms. Allocated memory is still 119.5 MB. Free memory was 94.3 MB in the beginning and 92.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:11:56,287 INFO L168 Benchmark]: Boogie Preprocessor took 18.81 ms. Allocated memory is still 119.5 MB. Free memory was 92.8 MB in the beginning and 91.9 MB in the end (delta: 914.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:11:56,290 INFO L168 Benchmark]: RCFGBuilder took 228.14 ms. Allocated memory is still 119.5 MB. Free memory was 91.9 MB in the beginning and 82.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:11:56,291 INFO L168 Benchmark]: TraceAbstraction took 549.97 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 82.6 MB in the beginning and 119.5 MB in the end (delta: -36.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:11:56,292 INFO L168 Benchmark]: Witness Printer took 7.60 ms. Allocated memory is still 144.7 MB. Free memory was 119.5 MB in the beginning and 119.2 MB in the end (delta: 300.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:11:56,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 119.5 MB. Free memory is still 72.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 255.67 ms. Allocated memory is still 119.5 MB. Free memory was 90.6 MB in the beginning and 94.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.58 ms. Allocated memory is still 119.5 MB. Free memory was 94.3 MB in the beginning and 92.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.81 ms. Allocated memory is still 119.5 MB. Free memory was 92.8 MB in the beginning and 91.9 MB in the end (delta: 914.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 228.14 ms. Allocated memory is still 119.5 MB. Free memory was 91.9 MB in the beginning and 82.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 549.97 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 82.6 MB in the beginning and 119.5 MB in the end (delta: -36.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. * Witness Printer took 7.60 ms. Allocated memory is still 144.7 MB. Free memory was 119.5 MB in the beginning and 119.2 MB in the end (delta: 300.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 24. Possible FailurePath: [L18] double x,y; [L20] x = __VERIFIER_nondet_double() [L12] COND FALSE !(!cond) [L23] y = x*x - x [L24] COND TRUE y >= 0 [L24] y = x / 10. [L14] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 459.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.1ms, AutomataDifference: 65.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 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=13occurred 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: 14.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.0ms SsaConstructionTime, 68.3ms SatisfiabilityAnalysisTime, 42.1ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 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 [2021-10-21 20:11:56,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/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-e943c26 [2021-10-21 20:11:58,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:11:58,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:11:58,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:11:58,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:11:58,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:11:58,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:11:58,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:11:58,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:11:58,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:11:58,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:11:58,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:11:58,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:11:58,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:11:58,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:11:58,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:11:58,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:11:58,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:11:58,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:11:58,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:11:58,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:11:58,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:11:58,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:11:58,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:11:58,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:11:58,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:11:58,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:11:58,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:11:58,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:11:58,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:11:58,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:11:58,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:11:58,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:11:58,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:11:58,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:11:58,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:11:58,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:11:58,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:11:58,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:11:58,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:11:58,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:11:58,955 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 20:11:59,003 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:11:59,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:11:59,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:11:59,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:11:59,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:11:59,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:11:59,007 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:11:59,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:11:59,008 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:11:59,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:11:59,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:11:59,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:11:59,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:11:59,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:11:59,010 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:11:59,011 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:11:59,011 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:11:59,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:11:59,011 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:11:59,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:11:59,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:11:59,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:11:59,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:11:59,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:11:59,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:11:59,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:11:59,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:11:59,014 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:11:59,014 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:11:59,014 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:11:59,015 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:11:59,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:11:59,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:11:59,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:11:59,016 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_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 [2021-10-21 20:11:59,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:11:59,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:11:59,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:11:59,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:11:59,455 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:11:59,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-benchs/zonotope_tight.c [2021-10-21 20:11:59,525 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/data/3d2aa4405/ef81efdede434376be2fceee73cac25c/FLAG1be5e26e8 [2021-10-21 20:12:00,039 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:12:00,040 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/sv-benchmarks/c/float-benchs/zonotope_tight.c [2021-10-21 20:12:00,047 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/data/3d2aa4405/ef81efdede434376be2fceee73cac25c/FLAG1be5e26e8 [2021-10-21 20:12:00,439 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/data/3d2aa4405/ef81efdede434376be2fceee73cac25c [2021-10-21 20:12:00,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:12:00,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:12:00,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:12:00,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:12:00,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:12:00,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:12:00" (1/1) ... [2021-10-21 20:12:00,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72fde4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:00, skipping insertion in model container [2021-10-21 20:12:00,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:12:00" (1/1) ... [2021-10-21 20:12:00,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:12:00,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:12:00,661 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_1f231513-c1c9-4b1f-9901-acb98bef7d6c/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2021-10-21 20:12:00,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:12:00,698 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:12:00,714 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_1f231513-c1c9-4b1f-9901-acb98bef7d6c/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2021-10-21 20:12:00,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:12:00,732 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:12:00,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:00 WrapperNode [2021-10-21 20:12:00,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:12:00,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:12:00,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:12:00,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:12:00,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:00" (1/1) ... [2021-10-21 20:12:00,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:00" (1/1) ... [2021-10-21 20:12:00,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:12:00,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:12:00,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:12:00,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:12:00,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:00" (1/1) ... [2021-10-21 20:12:00,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:00" (1/1) ... [2021-10-21 20:12:00,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:00" (1/1) ... [2021-10-21 20:12:00,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:00" (1/1) ... [2021-10-21 20:12:00,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:00" (1/1) ... [2021-10-21 20:12:00,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:00" (1/1) ... [2021-10-21 20:12:00,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:00" (1/1) ... [2021-10-21 20:12:00,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:12:00,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:12:00,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:12:00,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:12:00,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:00" (1/1) ... [2021-10-21 20:12:00,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:12:00,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:12:00,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:12:00,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:12:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:12:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:12:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:12:00,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:12:07,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:12:07,029 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 20:12:07,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:12:07 BoogieIcfgContainer [2021-10-21 20:12:07,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:12:07,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:12:07,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:12:07,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:12:07,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:12:00" (1/3) ... [2021-10-21 20:12:07,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656ea99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:12:07, skipping insertion in model container [2021-10-21 20:12:07,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:12:00" (2/3) ... [2021-10-21 20:12:07,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656ea99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:12:07, skipping insertion in model container [2021-10-21 20:12:07,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:12:07" (3/3) ... [2021-10-21 20:12:07,054 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2021-10-21 20:12:07,060 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:12:07,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:12:07,156 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:12:07,175 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, mAutomataTypeConcurrency=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 [2021-10-21 20:12:07,175 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:12:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-10-21 20:12:07,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:12:07,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:12:07,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:12:07,215 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:12:07,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:12:07,227 INFO L82 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2021-10-21 20:12:07,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:12:07,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132735646] [2021-10-21 20:12:07,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:12:07,246 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:12:07,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:12:07,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:12:07,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:12:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:12:07,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-21 20:12:07,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:12:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:07,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:12:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:12:08,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:12:08,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132735646] [2021-10-21 20:12:08,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132735646] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:12:08,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:12:08,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 20:12:08,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79686916] [2021-10-21 20:12:08,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:12:08,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:12:08,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:12:08,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:12:08,047 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-21 20:12:08,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:12:08,082 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-10-21 20:12:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:12:08,083 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) Word has length 8 [2021-10-21 20:12:08,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:12:08,092 INFO L225 Difference]: With dead ends: 23 [2021-10-21 20:12:08,093 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 20:12:08,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:12:08,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 20:12:08,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 20:12:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-10-21 20:12:08,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-21 20:12:08,129 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2021-10-21 20:12:08,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:12:08,130 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-21 20:12:08,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-21 20:12:08,130 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-21 20:12:08,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:12:08,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:12:08,131 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:12:08,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:12:08,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:12:08,346 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:12:08,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:12:08,347 INFO L82 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2021-10-21 20:12:08,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:12:08,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044943202] [2021-10-21 20:12:08,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:12:08,349 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:12:08,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:12:08,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:12:08,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:12:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:12:08,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:12:08,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:12:21,227 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (= c_ULTIMATE.start_main_~y~0 (fp.div c_currentRoundingMode ULTIMATE.start_main_~x~0 .cse0)) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse0))))) is different from true [2021-10-21 20:13:28,562 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (let ((.cse0 (fp.leq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse1) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse1)))) is different from false [2021-10-21 20:13:30,640 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (let ((.cse0 (fp.leq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse1) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse1)))) is different from true [2021-10-21 20:13:46,787 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (not (fp.leq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse0)))) is different from false [2021-10-21 20:13:48,870 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (not (fp.leq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse0)))) is different from true [2021-10-21 20:13:48,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:13:48,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:13:54,621 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq .cse0 (_ +zero 11 53)))) is different from false [2021-10-21 20:13:56,733 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq .cse0 (_ +zero 11 53)))) is different from true [2021-10-21 20:14:57,906 WARN L207 SmtUtils]: Spent 18.85 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-21 20:15:36,340 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 4.0))))) is different from false [2021-10-21 20:15:38,462 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 4.0))))) is different from true [2021-10-21 20:15:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:38,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:15:38,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044943202] [2021-10-21 20:15:38,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044943202] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:38,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:38,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-21 20:15:38,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806221919] [2021-10-21 20:15:38,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 20:15:38,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:15:38,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 20:15:38,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=33, Unknown=18, NotChecked=80, Total=156 [2021-10-21 20:15:38,469 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 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) [2021-10-21 20:15:42,531 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 4.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-21 20:15:44,654 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 4.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 20:15:46,783 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (or (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq .cse0 (_ +zero 11 53)))) .cse2) (let ((.cse3 (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53))) (.cse4 (fp.leq c_ULTIMATE.start_main_~x~0 .cse1))) (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse3 .cse4) (and (or (not .cse3) (not .cse4)) .cse2))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-10-21 20:15:48,904 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (or (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq .cse0 (_ +zero 11 53)))) .cse2) (let ((.cse3 (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53))) (.cse4 (fp.leq c_ULTIMATE.start_main_~x~0 .cse1))) (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse3 .cse4) (and (or (not .cse3) (not .cse4)) .cse2))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 20:15:51,573 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq .cse0 (_ +zero 11 53)) (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~x~0 .cse1) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-10-21 20:16:20,662 WARN L207 SmtUtils]: Spent 22.22 s on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2021-10-21 20:16:36,167 WARN L207 SmtUtils]: Spent 6.88 s on a formula simplification that was a NOOP. DAG size: 24 [2021-10-21 20:16:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:36,177 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-21 20:16:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:16:36,178 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 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) Word has length 8 [2021-10-21 20:16:36,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:16:36,179 INFO L225 Difference]: With dead ends: 13 [2021-10-21 20:16:36,179 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 20:16:36,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 115176.1ms TimeCoverageRelationStatistics Valid=38, Invalid=57, Unknown=27, NotChecked=184, Total=306 [2021-10-21 20:16:36,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 20:16:36,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 20:16:36,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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) [2021-10-21 20:16:36,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-21 20:16:36,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-21 20:16:36,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:16:36,184 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-21 20:16:36,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 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) [2021-10-21 20:16:36,184 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-21 20:16:36,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:16:36,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:16:36,184 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:36,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:36,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:16:36,385 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:16:36,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:36,386 INFO L82 PathProgramCache]: Analyzing trace with hash 176701705, now seen corresponding path program 1 times [2021-10-21 20:16:36,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:16:36,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492109285] [2021-10-21 20:16:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:36,388 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:16:36,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:16:36,390 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:16:36,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:16:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:36,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 20:16:36,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:49,796 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~y~0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0) c_ULTIMATE.start_main_~x~0)) (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-21 20:17:10,365 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= c_ULTIMATE.start_main_~y~0 (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-21 20:18:42,730 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (let ((.cse0 (fp.leq (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))))) is different from false [2021-10-21 20:18:44,767 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (let ((.cse0 (fp.leq (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))))) is different from true [2021-10-21 20:19:03,775 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (not (fp.leq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))))) is different from false [2021-10-21 20:19:05,812 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (not (fp.leq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))))) is different from true [2021-10-21 20:19:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:19:05,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:19:14,195 WARN L838 $PredicateComparison]: unable to prove that (or (fp.leq (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq c_ULTIMATE.start_main_~y~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-10-21 20:19:16,240 WARN L860 $PredicateComparison]: unable to prove that (or (fp.leq (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq c_ULTIMATE.start_main_~y~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-10-21 20:19:26,603 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) is different from false [2021-10-21 20:19:28,653 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) is different from true [2021-10-21 20:19:43,179 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) is different from false [2021-10-21 20:19:45,234 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) is different from true [2021-10-21 20:20:02,972 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_10 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~x~0_10))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_10 (_ +zero 11 53))) (fp.geq (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~x~0_10) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.leq v_ULTIMATE.start_main_~x~0_10 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))))) is different from false [2021-10-21 20:20:05,017 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_10 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~x~0_10))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_10 (_ +zero 11 53))) (fp.geq (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~x~0_10) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.leq v_ULTIMATE.start_main_~x~0_10 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))))) is different from true [2021-10-21 20:20:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:05,018 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:20:05,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492109285] [2021-10-21 20:20:05,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492109285] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:05,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:05,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-10-21 20:20:05,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923404190] [2021-10-21 20:20:05,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 20:20:05,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:20:05,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 20:20:05,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=31, Unknown=14, NotChecked=136, Total=210 [2021-10-21 20:20:05,022 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 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) [2021-10-21 20:20:07,093 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_10 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~x~0_10))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_10 (_ +zero 11 53))) (fp.geq (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~x~0_10) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.leq v_ULTIMATE.start_main_~x~0_10 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-21 20:20:09,140 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_10 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~x~0_10))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (not (fp.geq v_ULTIMATE.start_main_~x~0_10 (_ +zero 11 53))) (fp.geq (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~x~0_10) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.leq v_ULTIMATE.start_main_~x~0_10 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 20:20:11,189 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) .cse1)) (let ((.cse2 (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53))) (.cse3 (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse2 .cse3) (and (or (not .cse2) (not .cse3)) .cse1))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-10-21 20:20:13,241 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) .cse1)) (let ((.cse2 (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53))) (.cse3 (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse2 .cse3) (and (or (not .cse2) (not .cse3)) .cse1))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 20:20:15,577 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 20:20:18,772 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (and (= c_ULTIMATE.start_main_~y~0 (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0)) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq c_ULTIMATE.start_main_~y~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 20:20:20,824 WARN L838 $PredicateComparison]: unable to prove that (and (fp.geq c_ULTIMATE.start_main_~y~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~y~0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= c_ULTIMATE.start_main_~y~0 (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-21 20:20:22,883 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (let ((.cse0 (fp.leq (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse0))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)))))) is different from false [2021-10-21 20:20:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:22,890 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-10-21 20:20:22,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:20:22,891 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 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) Word has length 8 [2021-10-21 20:20:22,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:22,891 INFO L225 Difference]: With dead ends: 9 [2021-10-21 20:20:22,891 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:20:22,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 48788.0ms TimeCoverageRelationStatistics Valid=41, Invalid=35, Unknown=22, NotChecked=322, Total=420 [2021-10-21 20:20:22,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:20:22,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:20:22,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-21 20:20:22,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:20:22,893 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-21 20:20:22,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:22,893 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:20:22,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 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) [2021-10-21 20:20:22,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:20:22,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:20:22,897 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:20:22,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:20:23,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:20:23,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:20:23,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:23,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:23,153 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:20:23,153 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-21 20:20:23,153 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:20:23,154 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:20:23,154 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:20:23,154 INFO L860 garLoopResultBuilder]: At program point L28(lines 16 29) the Hoare annotation is: true [2021-10-21 20:20:23,155 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 25) no Hoare annotation was computed. [2021-10-21 20:20:23,155 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-21 20:20:23,155 INFO L857 garLoopResultBuilder]: For program point L24-2(lines 24 25) no Hoare annotation was computed. [2021-10-21 20:20:23,155 INFO L857 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-10-21 20:20:23,156 INFO L857 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-10-21 20:20:23,156 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-21 20:20:23,156 INFO L860 garLoopResultBuilder]: At program point L14-3(line 14) the Hoare annotation is: true [2021-10-21 20:20:23,161 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:20:23,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:20:23 BoogieIcfgContainer [2021-10-21 20:20:23,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:20:23,169 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:20:23,169 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:20:23,170 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:20:23,170 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:12:07" (3/4) ... [2021-10-21 20:20:23,174 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:20:23,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-21 20:20:23,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:20:23,187 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-21 20:20:23,187 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:20:23,226 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:20:23,226 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:20:23,228 INFO L168 Benchmark]: Toolchain (without parser) took 502782.94 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 37.5 MB in the beginning and 42.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:23,228 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 39.5 MB in the end (delta: 44.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:20:23,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.19 ms. Allocated memory is still 58.7 MB. Free memory was 37.3 MB in the beginning and 27.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:23,230 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.48 ms. Allocated memory is still 58.7 MB. Free memory was 27.1 MB in the beginning and 25.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:23,230 INFO L168 Benchmark]: Boogie Preprocessor took 52.31 ms. Allocated memory is still 58.7 MB. Free memory was 25.6 MB in the beginning and 24.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:20:23,231 INFO L168 Benchmark]: RCFGBuilder took 6206.02 ms. Allocated memory is still 58.7 MB. Free memory was 24.4 MB in the beginning and 36.0 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:23,231 INFO L168 Benchmark]: TraceAbstraction took 496135.78 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 35.5 MB in the beginning and 45.2 MB in the end (delta: -9.6 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:23,232 INFO L168 Benchmark]: Witness Printer took 57.15 ms. Allocated memory is still 83.9 MB. Free memory was 45.2 MB in the beginning and 42.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:23,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 39.5 MB in the end (delta: 44.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.19 ms. Allocated memory is still 58.7 MB. Free memory was 37.3 MB in the beginning and 27.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.48 ms. Allocated memory is still 58.7 MB. Free memory was 27.1 MB in the beginning and 25.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.31 ms. Allocated memory is still 58.7 MB. Free memory was 25.6 MB in the beginning and 24.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 6206.02 ms. Allocated memory is still 58.7 MB. Free memory was 24.4 MB in the beginning and 36.0 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 496135.78 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 35.5 MB in the beginning and 45.2 MB in the end (delta: -9.6 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * Witness Printer took 57.15 ms. Allocated memory is still 83.9 MB. Free memory was 45.2 MB in the beginning and 42.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: 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, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 496006.9ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 22.2ms, AutomataDifference: 75650.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 46.1ms, InitialAbstractionConstructionTime: 8.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 9 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4269.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 22 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 163964.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 39.0ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 57.0ms SsaConstructionTime, 1461.0ms SatisfiabilityAnalysisTime, 417868.7ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 8 QuantifiedInterpolants, 574 SizeOfPredicates, 14 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 20:20:23,469 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-21 20:20:23,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f231513-c1c9-4b1f-9901-acb98bef7d6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...