./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.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_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/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_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/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_530f86ec-1143-45e9-9480-271b2ff37354/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 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/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_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/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_530f86ec-1143-45e9-9480-271b2ff37354/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 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:21:28,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:21:28,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:21:28,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:21:28,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:21:28,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:21:28,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:21:28,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:21:28,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:21:28,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:21:28,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:21:28,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:21:28,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:21:28,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:21:28,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:21:28,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:21:28,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:21:28,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:21:28,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:21:28,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:21:28,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:21:28,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:21:28,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:21:28,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:21:28,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:21:28,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:21:28,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:21:28,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:21:28,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:21:28,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:21:28,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:21:28,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:21:28,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:21:28,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:21:28,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:21:28,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:21:28,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:21:28,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:21:28,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:21:28,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:21:28,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:21:28,642 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:21:28,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:21:28,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:21:28,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:21:28,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:21:28,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:21:28,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:21:28,697 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:21:28,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:21:28,697 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:21:28,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:21:28,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:21:28,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:21:28,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:21:28,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:21:28,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:21:28,700 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:21:28,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:21:28,700 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:21:28,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:21:28,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:21:28,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:21:28,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:21:28,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:21:28,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:21:28,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:21:28,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:21:28,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:21:28,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:21:28,703 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:21:28,705 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:21:28,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:21:28,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:21:28,706 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_530f86ec-1143-45e9-9480-271b2ff37354/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 [2021-10-21 19:21:29,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:21:29,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:21:29,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:21:29,071 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:21:29,072 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:21:29,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-10-21 19:21:29,141 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/data/2aba78bab/96584665edcc408aa05d7dbe8fa093ab/FLAGb3f9f448e [2021-10-21 19:21:29,665 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:21:29,666 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-10-21 19:21:29,677 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/data/2aba78bab/96584665edcc408aa05d7dbe8fa093ab/FLAGb3f9f448e [2021-10-21 19:21:30,034 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/data/2aba78bab/96584665edcc408aa05d7dbe8fa093ab [2021-10-21 19:21:30,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:21:30,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:21:30,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:21:30,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:21:30,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:21:30,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:21:30" (1/1) ... [2021-10-21 19:21:30,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a2d2a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:30, skipping insertion in model container [2021-10-21 19:21:30,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:21:30" (1/1) ... [2021-10-21 19:21:30,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:21:30,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:21:30,319 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_530f86ec-1143-45e9-9480-271b2ff37354/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-10-21 19:21:30,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:21:30,340 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:21:30,383 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_530f86ec-1143-45e9-9480-271b2ff37354/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-10-21 19:21:30,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:21:30,402 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:21:30,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:30 WrapperNode [2021-10-21 19:21:30,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:21:30,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:21:30,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:21:30,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:21:30,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:30" (1/1) ... [2021-10-21 19:21:30,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:30" (1/1) ... [2021-10-21 19:21:30,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:21:30,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:21:30,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:21:30,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:21:30,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:30" (1/1) ... [2021-10-21 19:21:30,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:30" (1/1) ... [2021-10-21 19:21:30,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:30" (1/1) ... [2021-10-21 19:21:30,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:30" (1/1) ... [2021-10-21 19:21:30,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:30" (1/1) ... [2021-10-21 19:21:30,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:30" (1/1) ... [2021-10-21 19:21:30,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:30" (1/1) ... [2021-10-21 19:21:30,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:21:30,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:21:30,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:21:30,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:21:30,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:30" (1/1) ... [2021-10-21 19:21:30,534 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:21:30,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:21:30,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:21:30,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:21:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:21:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:21:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-21 19:21:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:21:30,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:21:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:21:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:21:31,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:21:31,019 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-21 19:21:31,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:21:31 BoogieIcfgContainer [2021-10-21 19:21:31,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:21:31,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:21:31,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:21:31,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:21:31,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:21:30" (1/3) ... [2021-10-21 19:21:31,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1399edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:21:31, skipping insertion in model container [2021-10-21 19:21:31,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:30" (2/3) ... [2021-10-21 19:21:31,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1399edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:21:31, skipping insertion in model container [2021-10-21 19:21:31,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:21:31" (3/3) ... [2021-10-21 19:21:31,029 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2021-10-21 19:21:31,035 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:21:31,035 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:21:31,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:21:31,100 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 19:21:31,101 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:21:31,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 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 19:21:31,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:21:31,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:31,121 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:31,122 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:31,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:31,127 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2021-10-21 19:21:31,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:31,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17422141] [2021-10-21 19:21:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:31,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:31,280 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 19:21:31,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:21:31,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17422141] [2021-10-21 19:21:31,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17422141] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:31,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:31,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:21:31,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008060043] [2021-10-21 19:21:31,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:21:31,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:31,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:21:31,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:21:31,306 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 19:21:31,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:31,337 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2021-10-21 19:21:31,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:21:31,339 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-10-21 19:21:31,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:31,348 INFO L225 Difference]: With dead ends: 62 [2021-10-21 19:21:31,349 INFO L226 Difference]: Without dead ends: 29 [2021-10-21 19:21:31,352 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 19:21:31,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-21 19:21:31,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-21 19:21:31,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 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 19:21:31,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-10-21 19:21:31,399 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2021-10-21 19:21:31,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:31,400 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-10-21 19:21:31,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 19:21:31,401 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-10-21 19:21:31,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:21:31,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:31,403 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:31,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:21:31,403 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:31,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:31,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2021-10-21 19:21:31,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:31,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940445380] [2021-10-21 19:21:31,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:31,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:31,495 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 19:21:31,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:21:31,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940445380] [2021-10-21 19:21:31,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940445380] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:31,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:31,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:21:31,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225294167] [2021-10-21 19:21:31,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:21:31,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:31,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:21:31,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:21:31,500 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 19:21:31,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:31,587 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2021-10-21 19:21:31,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:21:31,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-21 19:21:31,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:31,589 INFO L225 Difference]: With dead ends: 53 [2021-10-21 19:21:31,589 INFO L226 Difference]: Without dead ends: 44 [2021-10-21 19:21:31,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:21:31,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-21 19:21:31,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2021-10-21 19:21:31,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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 19:21:31,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-21 19:21:31,597 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2021-10-21 19:21:31,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:31,598 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-21 19:21:31,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 19:21:31,598 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-21 19:21:31,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:21:31,599 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:31,599 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:31,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:21:31,600 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:31,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:31,601 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2021-10-21 19:21:31,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:31,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741980450] [2021-10-21 19:21:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:31,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:31,662 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 19:21:31,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:21:31,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741980450] [2021-10-21 19:21:31,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741980450] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:31,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:31,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:21:31,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202367210] [2021-10-21 19:21:31,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:21:31,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:31,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:21:31,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:21:31,668 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 19:21:31,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:31,713 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2021-10-21 19:21:31,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:21:31,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-10-21 19:21:31,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:31,715 INFO L225 Difference]: With dead ends: 55 [2021-10-21 19:21:31,715 INFO L226 Difference]: Without dead ends: 46 [2021-10-21 19:21:31,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:21:31,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-21 19:21:31,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2021-10-21 19:21:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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 19:21:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-21 19:21:31,722 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2021-10-21 19:21:31,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:31,723 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-21 19:21:31,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 19:21:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-21 19:21:31,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:21:31,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:31,724 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:31,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:21:31,725 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:31,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:31,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2021-10-21 19:21:31,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:31,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023808966] [2021-10-21 19:21:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:31,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:31,778 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 19:21:31,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:21:31,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023808966] [2021-10-21 19:21:31,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023808966] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:31,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:31,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:21:31,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295366017] [2021-10-21 19:21:31,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:21:31,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:31,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:21:31,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:21:31,782 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 19:21:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:31,848 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2021-10-21 19:21:31,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:21:31,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-10-21 19:21:31,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:31,855 INFO L225 Difference]: With dead ends: 57 [2021-10-21 19:21:31,855 INFO L226 Difference]: Without dead ends: 48 [2021-10-21 19:21:31,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:21:31,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-21 19:21:31,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2021-10-21 19:21:31,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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 19:21:31,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-21 19:21:31,863 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2021-10-21 19:21:31,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:31,863 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-21 19:21:31,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 19:21:31,864 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-21 19:21:31,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:21:31,865 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:31,865 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:31,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:21:31,865 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:31,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:31,866 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2021-10-21 19:21:31,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:31,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417023879] [2021-10-21 19:21:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:31,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:31,954 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 19:21:31,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:21:31,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417023879] [2021-10-21 19:21:31,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417023879] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:31,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:31,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:21:31,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584462827] [2021-10-21 19:21:31,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:21:31,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:31,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:21:31,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:21:31,959 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 19:21:31,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:31,999 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2021-10-21 19:21:31,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:21:31,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-10-21 19:21:32,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:32,000 INFO L225 Difference]: With dead ends: 55 [2021-10-21 19:21:32,001 INFO L226 Difference]: Without dead ends: 46 [2021-10-21 19:21:32,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:21:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-21 19:21:32,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2021-10-21 19:21:32,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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 19:21:32,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-21 19:21:32,006 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2021-10-21 19:21:32,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:32,007 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-21 19:21:32,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 19:21:32,007 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-21 19:21:32,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:21:32,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:32,008 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:32,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:21:32,009 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:32,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:32,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2021-10-21 19:21:32,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:32,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082944541] [2021-10-21 19:21:32,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:32,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:32,033 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:21:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:32,075 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:21:32,075 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:21:32,076 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:21:32,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:21:32,084 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:21:32,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:21:32 BoogieIcfgContainer [2021-10-21 19:21:32,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:21:32,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:21:32,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:21:32,111 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:21:32,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:21:31" (3/4) ... [2021-10-21 19:21:32,115 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:21:32,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:21:32,117 INFO L168 Benchmark]: Toolchain (without parser) took 2077.68 ms. Allocated memory was 117.4 MB in the beginning and 144.7 MB in the end (delta: 27.3 MB). Free memory was 87.8 MB in the beginning and 84.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:32,117 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 117.4 MB. Free memory is still 70.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:21:32,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.00 ms. Allocated memory is still 117.4 MB. Free memory was 87.5 MB in the beginning and 91.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:32,119 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.51 ms. Allocated memory is still 117.4 MB. Free memory was 91.3 MB in the beginning and 89.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:32,119 INFO L168 Benchmark]: Boogie Preprocessor took 57.57 ms. Allocated memory is still 117.4 MB. Free memory was 89.5 MB in the beginning and 88.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:21:32,120 INFO L168 Benchmark]: RCFGBuilder took 496.32 ms. Allocated memory is still 117.4 MB. Free memory was 87.9 MB in the beginning and 75.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:32,121 INFO L168 Benchmark]: TraceAbstraction took 1087.57 ms. Allocated memory was 117.4 MB in the beginning and 144.7 MB in the end (delta: 27.3 MB). Free memory was 74.5 MB in the beginning and 84.8 MB in the end (delta: -10.2 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:32,121 INFO L168 Benchmark]: Witness Printer took 4.17 ms. Allocated memory is still 144.7 MB. Free memory was 84.8 MB in the beginning and 84.0 MB in the end (delta: 717.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:32,125 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 117.4 MB. Free memory is still 70.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 364.00 ms. Allocated memory is still 117.4 MB. Free memory was 87.5 MB in the beginning and 91.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.51 ms. Allocated memory is still 117.4 MB. Free memory was 91.3 MB in the beginning and 89.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.57 ms. Allocated memory is still 117.4 MB. Free memory was 89.5 MB in the beginning and 88.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 496.32 ms. Allocated memory is still 117.4 MB. Free memory was 87.9 MB in the beginning and 75.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1087.57 ms. Allocated memory was 117.4 MB in the beginning and 144.7 MB in the end (delta: 27.3 MB). Free memory was 74.5 MB in the beginning and 84.8 MB in the end (delta: -10.2 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.17 ms. Allocated memory is still 144.7 MB. Free memory was 84.8 MB in the beginning and 84.0 MB in the end (delta: 717.7 kB). 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 - UnprovableResult [Line: 72]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 71, overapproximation of someUnaryFLOAToperation at line 67. Possible FailurePath: [L66] float x = 0.0f; [L67] float y = -0.0f; [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L72] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 990.9ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 13.4ms, AutomataDifference: 322.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 111.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 49.0ms AutomataMinimizationTime, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.5ms SsaConstructionTime, 125.5ms SatisfiabilityAnalysisTime, 224.7ms InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 19:21:32,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/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 19:21:34,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:21:34,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:21:34,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:21:34,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:21:34,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:21:34,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:21:34,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:21:34,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:21:34,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:21:34,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:21:34,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:21:34,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:21:34,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:21:34,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:21:34,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:21:34,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:21:34,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:21:34,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:21:34,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:21:34,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:21:34,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:21:34,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:21:34,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:21:34,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:21:34,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:21:34,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:21:34,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:21:34,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:21:34,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:21:34,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:21:34,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:21:34,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:21:34,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:21:34,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:21:34,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:21:34,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:21:34,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:21:34,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:21:34,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:21:34,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:21:34,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 19:21:34,799 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:21:34,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:21:34,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:21:34,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:21:34,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:21:34,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:21:34,804 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:21:34,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:21:34,804 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:21:34,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:21:34,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:21:34,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:21:34,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:21:34,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:21:34,807 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:21:34,807 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:21:34,808 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:21:34,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:21:34,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:21:34,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:21:34,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:21:34,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:21:34,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:21:34,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:21:34,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:21:34,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:21:34,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:21:34,811 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:21:34,811 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:21:34,811 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:21:34,811 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:21:34,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:21:34,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:21:34,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:21:34,812 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_530f86ec-1143-45e9-9480-271b2ff37354/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 [2021-10-21 19:21:35,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:21:35,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:21:35,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:21:35,214 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:21:35,215 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:21:35,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-10-21 19:21:35,294 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/data/bc9b651e6/00bdeae832754d07b3c8d57f8867ae9f/FLAGa04e7e972 [2021-10-21 19:21:35,862 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:21:35,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-10-21 19:21:35,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/data/bc9b651e6/00bdeae832754d07b3c8d57f8867ae9f/FLAGa04e7e972 [2021-10-21 19:21:36,207 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/data/bc9b651e6/00bdeae832754d07b3c8d57f8867ae9f [2021-10-21 19:21:36,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:21:36,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:21:36,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:21:36,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:21:36,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:21:36,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:21:36" (1/1) ... [2021-10-21 19:21:36,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@300caf4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:36, skipping insertion in model container [2021-10-21 19:21:36,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:21:36" (1/1) ... [2021-10-21 19:21:36,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:21:36,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:21:36,449 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_530f86ec-1143-45e9-9480-271b2ff37354/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-10-21 19:21:36,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:21:36,464 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:21:36,499 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_530f86ec-1143-45e9-9480-271b2ff37354/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-10-21 19:21:36,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:21:36,525 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:21:36,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:36 WrapperNode [2021-10-21 19:21:36,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:21:36,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:21:36,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:21:36,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:21:36,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:36" (1/1) ... [2021-10-21 19:21:36,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:36" (1/1) ... [2021-10-21 19:21:36,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:21:36,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:21:36,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:21:36,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:21:36,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:36" (1/1) ... [2021-10-21 19:21:36,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:36" (1/1) ... [2021-10-21 19:21:36,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:36" (1/1) ... [2021-10-21 19:21:36,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:36" (1/1) ... [2021-10-21 19:21:36,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:36" (1/1) ... [2021-10-21 19:21:36,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:36" (1/1) ... [2021-10-21 19:21:36,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:36" (1/1) ... [2021-10-21 19:21:36,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:21:36,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:21:36,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:21:36,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:21:36,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:36" (1/1) ... [2021-10-21 19:21:36,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:21:36,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:21:36,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:21:36,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:21:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 19:21:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:21:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 19:21:36,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:21:36,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:21:36,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-21 19:21:36,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:21:37,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:21:37,036 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-21 19:21:37,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:21:37 BoogieIcfgContainer [2021-10-21 19:21:37,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:21:37,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:21:37,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:21:37,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:21:37,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:21:36" (1/3) ... [2021-10-21 19:21:37,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19aacdd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:21:37, skipping insertion in model container [2021-10-21 19:21:37,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:36" (2/3) ... [2021-10-21 19:21:37,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19aacdd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:21:37, skipping insertion in model container [2021-10-21 19:21:37,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:21:37" (3/3) ... [2021-10-21 19:21:37,046 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2021-10-21 19:21:37,052 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:21:37,052 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:21:37,110 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:21:37,117 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 19:21:37,119 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:21:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 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 19:21:37,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:21:37,143 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:37,145 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:37,146 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:37,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:37,157 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2021-10-21 19:21:37,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:21:37,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147876931] [2021-10-21 19:21:37,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:37,183 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:21:37,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:21:37,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:21:37,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:21:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:37,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-21 19:21:37,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:21:37,405 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 19:21:37,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:21:37,468 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 19:21:37,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:21:37,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147876931] [2021-10-21 19:21:37,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147876931] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:37,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:37,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 19:21:37,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417035194] [2021-10-21 19:21:37,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:21:37,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:21:37,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:21:37,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:21:37,499 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 19:21:37,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:37,522 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2021-10-21 19:21:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:21:37,525 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-10-21 19:21:37,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:37,534 INFO L225 Difference]: With dead ends: 62 [2021-10-21 19:21:37,535 INFO L226 Difference]: Without dead ends: 29 [2021-10-21 19:21:37,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 19:21:37,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-21 19:21:37,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-21 19:21:37,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 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 19:21:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-10-21 19:21:37,570 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2021-10-21 19:21:37,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:37,571 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-10-21 19:21:37,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 19:21:37,571 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-10-21 19:21:37,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:21:37,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:37,572 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:37,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:21:37,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:21:37,786 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:37,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2021-10-21 19:21:37,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:21:37,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586446475] [2021-10-21 19:21:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:37,796 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:21:37,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:21:37,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:21:37,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:21:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:37,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:21:37,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:21:37,941 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 19:21:37,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:21:37,986 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 19:21:37,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:21:37,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586446475] [2021-10-21 19:21:37,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586446475] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:37,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:37,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-21 19:21:37,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292234875] [2021-10-21 19:21:37,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:21:37,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:21:37,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:21:37,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:21:37,991 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 19:21:38,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:38,105 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2021-10-21 19:21:38,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:21:38,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 11 [2021-10-21 19:21:38,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:38,111 INFO L225 Difference]: With dead ends: 68 [2021-10-21 19:21:38,113 INFO L226 Difference]: Without dead ends: 59 [2021-10-21 19:21:38,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 39.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:21:38,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-21 19:21:38,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2021-10-21 19:21:38,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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 19:21:38,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-21 19:21:38,128 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2021-10-21 19:21:38,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:38,129 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-21 19:21:38,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 19:21:38,130 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-21 19:21:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:21:38,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:38,133 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:38,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:21:38,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:21:38,346 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:38,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:38,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2021-10-21 19:21:38,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:21:38,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076142759] [2021-10-21 19:21:38,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:38,349 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:21:38,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:21:38,350 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:21:38,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:21:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:38,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:21:38,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:21:38,533 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 19:21:38,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:21:38,617 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 19:21:38,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:21:38,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076142759] [2021-10-21 19:21:38,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076142759] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:38,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:38,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-21 19:21:38,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111906016] [2021-10-21 19:21:38,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:21:38,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:21:38,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:21:38,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:21:38,626 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 19:21:38,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:38,677 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2021-10-21 19:21:38,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:21:38,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-10-21 19:21:38,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:38,679 INFO L225 Difference]: With dead ends: 52 [2021-10-21 19:21:38,679 INFO L226 Difference]: Without dead ends: 26 [2021-10-21 19:21:38,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:21:38,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-21 19:21:38,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-21 19:21:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:38,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-10-21 19:21:38,690 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2021-10-21 19:21:38,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:38,690 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-10-21 19:21:38,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 19:21:38,692 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-10-21 19:21:38,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:21:38,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:38,698 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:38,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:21:38,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:21:38,914 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:38,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:38,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2021-10-21 19:21:38,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:21:38,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521613711] [2021-10-21 19:21:38,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:38,916 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:21:38,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:21:38,917 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:21:38,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 19:21:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:39,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:21:39,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:21:39,072 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 19:21:39,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:21:39,134 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 19:21:39,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:21:39,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521613711] [2021-10-21 19:21:39,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521613711] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:39,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:39,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-21 19:21:39,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655699817] [2021-10-21 19:21:39,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:21:39,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:21:39,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:21:39,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:21:39,139 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 19:21:39,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:39,210 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2021-10-21 19:21:39,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:21:39,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 16 [2021-10-21 19:21:39,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:39,216 INFO L225 Difference]: With dead ends: 61 [2021-10-21 19:21:39,216 INFO L226 Difference]: Without dead ends: 52 [2021-10-21 19:21:39,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:21:39,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-21 19:21:39,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2021-10-21 19:21:39,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 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 19:21:39,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-10-21 19:21:39,232 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2021-10-21 19:21:39,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:39,233 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-10-21 19:21:39,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 19:21:39,233 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-10-21 19:21:39,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:21:39,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:39,235 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:39,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:21:39,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:21:39,442 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:39,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:39,443 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2021-10-21 19:21:39,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:21:39,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983581453] [2021-10-21 19:21:39,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:39,444 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:21:39,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:21:39,445 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:21:39,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 19:21:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:39,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:21:39,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:21:39,720 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 19:21:39,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:21:39,837 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 19:21:39,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:21:39,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983581453] [2021-10-21 19:21:39,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983581453] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:39,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:39,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-21 19:21:39,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908993101] [2021-10-21 19:21:39,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:21:39,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:21:39,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:21:39,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:21:39,840 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 19:21:39,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:39,855 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2021-10-21 19:21:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:21:39,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 18 [2021-10-21 19:21:39,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:39,861 INFO L225 Difference]: With dead ends: 38 [2021-10-21 19:21:39,861 INFO L226 Difference]: Without dead ends: 28 [2021-10-21 19:21:39,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:21:39,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-21 19:21:39,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-21 19:21:39,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 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 19:21:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-10-21 19:21:39,867 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2021-10-21 19:21:39,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:39,868 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-10-21 19:21:39,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 19:21:39,868 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-10-21 19:21:39,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:21:39,869 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:39,869 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:39,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:21:40,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:21:40,082 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:40,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:40,082 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2021-10-21 19:21:40,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:21:40,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83747236] [2021-10-21 19:21:40,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:40,083 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:21:40,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:21:40,085 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:21:40,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 19:21:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:40,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:21:40,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:21:40,301 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 19:21:40,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:21:40,410 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 19:21:40,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:21:40,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83747236] [2021-10-21 19:21:40,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83747236] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:40,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:40,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-10-21 19:21:40,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113363360] [2021-10-21 19:21:40,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:21:40,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:21:40,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:21:40,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:21:40,413 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:40,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:40,502 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-10-21 19:21:40,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:21:40,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-21 19:21:40,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:40,503 INFO L225 Difference]: With dead ends: 40 [2021-10-21 19:21:40,503 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 19:21:40,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 88.6ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:21:40,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 19:21:40,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2021-10-21 19:21:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 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 19:21:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-10-21 19:21:40,508 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2021-10-21 19:21:40,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:40,508 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-10-21 19:21:40,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:40,508 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-10-21 19:21:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 19:21:40,509 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:40,509 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:40,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:21:40,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:21:40,713 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:40,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:40,713 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2021-10-21 19:21:40,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:21:40,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664061117] [2021-10-21 19:21:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:40,714 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:21:40,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:21:40,715 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:21:40,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 19:21:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:40,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:21:40,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:21:40,922 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 19:21:40,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:21:41,046 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 19:21:41,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:21:41,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664061117] [2021-10-21 19:21:41,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664061117] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:41,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:41,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 19:21:41,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542139107] [2021-10-21 19:21:41,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:21:41,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:21:41,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:21:41,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:21:41,048 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19:21:41,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:41,099 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-10-21 19:21:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:21:41,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2021-10-21 19:21:41,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:41,100 INFO L225 Difference]: With dead ends: 43 [2021-10-21 19:21:41,100 INFO L226 Difference]: Without dead ends: 23 [2021-10-21 19:21:41,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:21:41,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-21 19:21:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-21 19:21:41,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0) internal successors, (22), 22 states have internal predecessors, (22), 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 19:21:41,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-10-21 19:21:41,104 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2021-10-21 19:21:41,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:41,104 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-10-21 19:21:41,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19:21:41,104 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-10-21 19:21:41,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:21:41,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:41,105 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:41,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:21:41,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:21:41,314 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:21:41,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:41,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2021-10-21 19:21:41,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:21:41,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347749451] [2021-10-21 19:21:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:41,315 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:21:41,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:21:41,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:21:41,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 19:21:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:41,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:21:41,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:21:41,659 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 19:21:41,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:21:42,126 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 19:21:42,126 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:21:42,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347749451] [2021-10-21 19:21:42,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347749451] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:21:42,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:21:42,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-10-21 19:21:42,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806912566] [2021-10-21 19:21:42,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 19:21:42,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:21:42,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 19:21:42,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:21:42,129 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 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 19:21:42,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:42,322 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-21 19:21:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:21:42,324 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 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 22 [2021-10-21 19:21:42,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:42,324 INFO L225 Difference]: With dead ends: 23 [2021-10-21 19:21:42,324 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:21:42,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 389.1ms TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:21:42,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:21:42,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:21:42,325 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 19:21:42,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:21:42,326 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-10-21 19:21:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:42,326 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:21:42,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 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 19:21:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:21:42,326 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:21:42,329 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:21:42,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:21:42,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:21:42,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:21:42,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:21:42,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:21:42,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:21:42,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:21:42,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:21:42,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:21:42,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:21:42,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:21:42,717 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:21:42,717 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:21:42,717 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed. [2021-10-21 19:21:42,718 INFO L857 garLoopResultBuilder]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2021-10-21 19:21:42,718 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-21 19:21:42,718 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-10-21 19:21:42,718 INFO L857 garLoopResultBuilder]: For program point L71-2(lines 71 74) no Hoare annotation was computed. [2021-10-21 19:21:42,718 INFO L853 garLoopResultBuilder]: At program point L55(lines 46 56) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 |ULTIMATE.start_fmin_float_#res|) (= .cse0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~y .cse0) |ULTIMATE.start_main_#t~short14| (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= |ULTIMATE.start___signbit_float_#res| (_ bv1 32)) (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= .cse0 ULTIMATE.start___signbit_float_~x))) [2021-10-21 19:21:42,718 INFO L857 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2021-10-21 19:21:42,718 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 34) no Hoare annotation was computed. [2021-10-21 19:21:42,719 INFO L857 garLoopResultBuilder]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2021-10-21 19:21:42,719 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-10-21 19:21:42,719 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:21:42,719 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2021-10-21 19:21:42,719 INFO L857 garLoopResultBuilder]: For program point L49-1(lines 49 53) no Hoare annotation was computed. [2021-10-21 19:21:42,719 INFO L853 garLoopResultBuilder]: At program point L49-2(lines 49 53) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 |ULTIMATE.start_fmin_float_#res|) (= .cse0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~y .cse0) |ULTIMATE.start_main_#t~short14| (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= .cse0 ULTIMATE.start___signbit_float_~x))) [2021-10-21 19:21:42,719 INFO L857 garLoopResultBuilder]: For program point L49-3(lines 49 53) no Hoare annotation was computed. [2021-10-21 19:21:42,719 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:21:42,720 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 34) no Hoare annotation was computed. [2021-10-21 19:21:42,720 INFO L857 garLoopResultBuilder]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2021-10-21 19:21:42,720 INFO L857 garLoopResultBuilder]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2021-10-21 19:21:42,720 INFO L853 garLoopResultBuilder]: At program point L17-2(lines 17 21) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start___fpclassify_float_~x (_ +zero 8 24))) [2021-10-21 19:21:42,720 INFO L857 garLoopResultBuilder]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2021-10-21 19:21:42,720 INFO L857 garLoopResultBuilder]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2021-10-21 19:21:42,720 INFO L853 garLoopResultBuilder]: At program point L17-6(lines 17 21) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~y .cse0) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x))) [2021-10-21 19:21:42,720 INFO L857 garLoopResultBuilder]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2021-10-21 19:21:42,721 INFO L853 garLoopResultBuilder]: At program point L34(lines 14 35) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start___fpclassify_float_~x (_ +zero 8 24)) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24))) [2021-10-21 19:21:42,721 INFO L853 garLoopResultBuilder]: At program point L34-1(lines 14 35) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~y .cse0) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)))) [2021-10-21 19:21:42,721 INFO L860 garLoopResultBuilder]: At program point L76(lines 58 77) the Hoare annotation is: true [2021-10-21 19:21:42,721 INFO L857 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-10-21 19:21:42,721 INFO L857 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-10-21 19:21:42,721 INFO L853 garLoopResultBuilder]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 |ULTIMATE.start_fmin_float_#res|) (= ULTIMATE.start_fmin_float_~y .cse0) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= .cse0 ULTIMATE.start___fpclassify_float_~x))) [2021-10-21 19:21:42,725 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:21:42,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:21:42 BoogieIcfgContainer [2021-10-21 19:21:42,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:21:42,742 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:21:42,742 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:21:42,742 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:21:42,743 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:21:37" (3/4) ... [2021-10-21 19:21:42,746 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:21:42,757 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-21 19:21:42,757 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-21 19:21:42,758 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-21 19:21:42,758 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:21:42,782 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && 2bv32 == \result) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE() [2021-10-21 19:21:42,782 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x [2021-10-21 19:21:42,783 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x [2021-10-21 19:21:42,783 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && !(0bv32 == \result) [2021-10-21 19:21:42,784 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == 1bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x [2021-10-21 19:21:42,800 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:21:42,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:21:42,801 INFO L168 Benchmark]: Toolchain (without parser) took 6586.91 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 50.5 MB in the beginning and 47.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:42,802 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 69.2 MB. Free memory was 48.8 MB in the beginning and 48.8 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:21:42,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.70 ms. Allocated memory is still 69.2 MB. Free memory was 50.3 MB in the beginning and 52.1 MB in the end (delta: -1.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:42,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.62 ms. Allocated memory is still 69.2 MB. Free memory was 52.1 MB in the beginning and 50.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:42,803 INFO L168 Benchmark]: Boogie Preprocessor took 33.27 ms. Allocated memory is still 69.2 MB. Free memory was 50.3 MB in the beginning and 48.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:21:42,804 INFO L168 Benchmark]: RCFGBuilder took 409.70 ms. Allocated memory is still 69.2 MB. Free memory was 48.8 MB in the beginning and 35.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:42,804 INFO L168 Benchmark]: TraceAbstraction took 5701.25 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 35.1 MB in the beginning and 50.7 MB in the end (delta: -15.5 MB). Peak memory consumption was 584.4 kB. Max. memory is 16.1 GB. [2021-10-21 19:21:42,804 INFO L168 Benchmark]: Witness Printer took 58.25 ms. Allocated memory is still 83.9 MB. Free memory was 50.7 MB in the beginning and 47.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:42,807 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 69.2 MB. Free memory was 48.8 MB in the beginning and 48.8 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.70 ms. Allocated memory is still 69.2 MB. Free memory was 50.3 MB in the beginning and 52.1 MB in the end (delta: -1.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.62 ms. Allocated memory is still 69.2 MB. Free memory was 52.1 MB in the beginning and 50.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.27 ms. Allocated memory is still 69.2 MB. Free memory was 50.3 MB in the beginning and 48.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 409.70 ms. Allocated memory is still 69.2 MB. Free memory was 48.8 MB in the beginning and 35.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5701.25 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 35.1 MB in the beginning and 50.7 MB in the end (delta: -15.5 MB). Peak memory consumption was 584.4 kB. Max. memory is 16.1 GB. * Witness Printer took 58.25 ms. Allocated memory is still 83.9 MB. Free memory was 50.7 MB in the beginning and 47.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 72]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5626.8ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 18.9ms, AutomataDifference: 685.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 186.7ms, InitialAbstractionConstructionTime: 12.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 234 SDtfs, 203 SDslu, 403 SDs, 0 SdLazy, 147 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 217.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 200 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 648.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 66.5ms AutomataMinimizationTime, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 182 HoareAnnotationTreeSize, 8 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 72.3ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 107.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 110.7ms SsaConstructionTime, 281.7ms SatisfiabilityAnalysisTime, 1929.3ms InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 888 SizeOfPredicates, 38 NumberOfNonLiveVariables, 493 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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: 17]: Loop Invariant Derived loop invariant: (y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && 2bv32 == \result) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && !(0bv32 == \result) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == 1bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x RESULT: Ultimate proved your program to be correct! [2021-10-21 19:21:42,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_530f86ec-1143-45e9-9480-271b2ff37354/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...