./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1092b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1092b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y --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 b6a79bd811ba30bc3163e272e2b4a2c8d4bc7e99a75fdcec3ffb0e3966342f97 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:50:16,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:50:16,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:50:16,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:50:16,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:50:16,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:50:16,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:50:16,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:50:16,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:50:16,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:50:16,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:50:16,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:50:16,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:50:16,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:50:16,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:50:16,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:50:16,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:50:16,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:50:16,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:50:16,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:50:16,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:50:16,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:50:16,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:50:16,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:50:16,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:50:16,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:50:16,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:50:16,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:50:16,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:50:16,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:50:16,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:50:16,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:50:16,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:50:16,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:50:16,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:50:16,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:50:16,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:50:16,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:50:16,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:50:16,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:50:16,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:50:16,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:50:16,750 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:50:16,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:50:16,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:50:16,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:50:16,752 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:50:16,752 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:50:16,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:50:16,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:50:16,754 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:50:16,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:50:16,754 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:50:16,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:50:16,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:50:16,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:50:16,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:50:16,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:50:16,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:50:16,757 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:50:16,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:50:16,757 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:50:16,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:50:16,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:50:16,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:50:16,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:50:16,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:50:16,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:50:16,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:50:16,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:50:16,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:50:16,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:50:16,760 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:50:16,760 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:50:16,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:50:16,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:50:16,761 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_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6a79bd811ba30bc3163e272e2b4a2c8d4bc7e99a75fdcec3ffb0e3966342f97 [2021-11-13 18:50:17,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:50:17,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:50:17,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:50:17,156 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:50:17,157 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:50:17,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/float-newlib/double_req_bl_1092b.c [2021-11-13 18:50:17,239 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/data/4d78f37a3/7e9c5d6b84df474c9294e6d8a486080a/FLAGc9438be19 [2021-11-13 18:50:17,717 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:50:17,718 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/sv-benchmarks/c/float-newlib/double_req_bl_1092b.c [2021-11-13 18:50:17,746 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/data/4d78f37a3/7e9c5d6b84df474c9294e6d8a486080a/FLAGc9438be19 [2021-11-13 18:50:18,056 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/data/4d78f37a3/7e9c5d6b84df474c9294e6d8a486080a [2021-11-13 18:50:18,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:50:18,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:50:18,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:50:18,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:50:18,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:50:18,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:50:18" (1/1) ... [2021-11-13 18:50:18,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7099cbe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:18, skipping insertion in model container [2021-11-13 18:50:18,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:50:18" (1/1) ... [2021-11-13 18:50:18,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:50:18,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:50:18,352 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_c26adf2a-9389-44cd-aa08-dcaef0deb41f/sv-benchmarks/c/float-newlib/double_req_bl_1092b.c[2109,2122] [2021-11-13 18:50:18,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:50:18,364 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:50:18,392 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_c26adf2a-9389-44cd-aa08-dcaef0deb41f/sv-benchmarks/c/float-newlib/double_req_bl_1092b.c[2109,2122] [2021-11-13 18:50:18,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:50:18,407 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:50:18,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:18 WrapperNode [2021-11-13 18:50:18,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:50:18,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:50:18,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:50:18,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:50:18,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:18" (1/1) ... [2021-11-13 18:50:18,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:18" (1/1) ... [2021-11-13 18:50:18,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:50:18,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:50:18,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:50:18,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:50:18,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:18" (1/1) ... [2021-11-13 18:50:18,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:18" (1/1) ... [2021-11-13 18:50:18,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:18" (1/1) ... [2021-11-13 18:50:18,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:18" (1/1) ... [2021-11-13 18:50:18,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:18" (1/1) ... [2021-11-13 18:50:18,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:18" (1/1) ... [2021-11-13 18:50:18,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:18" (1/1) ... [2021-11-13 18:50:18,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:50:18,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:50:18,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:50:18,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:50:18,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:18" (1/1) ... [2021-11-13 18:50:18,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:50:18,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:50:18,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:50:18,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:50:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:50:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:50:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-13 18:50:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:50:18,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-13 18:50:18,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:50:18,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:50:18,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:50:18,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:50:19,084 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:50:19,085 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-13 18:50:19,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:50:19 BoogieIcfgContainer [2021-11-13 18:50:19,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:50:19,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:50:19,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:50:19,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:50:19,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:50:18" (1/3) ... [2021-11-13 18:50:19,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e7a25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:50:19, skipping insertion in model container [2021-11-13 18:50:19,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:18" (2/3) ... [2021-11-13 18:50:19,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e7a25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:50:19, skipping insertion in model container [2021-11-13 18:50:19,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:50:19" (3/3) ... [2021-11-13 18:50:19,106 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092b.c [2021-11-13 18:50:19,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:50:19,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:50:19,177 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:50:19,186 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 [2021-11-13 18:50:19,186 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:50:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 32 states have internal predecessors, (52), 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) [2021-11-13 18:50:19,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 18:50:19,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:50:19,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:50:19,214 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:50:19,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:50:19,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1046119076, now seen corresponding path program 1 times [2021-11-13 18:50:19,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:50:19,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127734164] [2021-11-13 18:50:19,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:19,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:50:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:19,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:50:19,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127734164] [2021-11-13 18:50:19,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127734164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:50:19,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:50:19,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:50:19,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108027854] [2021-11-13 18:50:19,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:50:19,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:50:19,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:50:19,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:50:19,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:50:19,458 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 32 states have internal predecessors, (52), 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) [2021-11-13 18:50:19,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:50:19,486 INFO L93 Difference]: Finished difference Result 64 states and 102 transitions. [2021-11-13 18:50:19,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:50:19,492 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 [2021-11-13 18:50:19,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:50:19,502 INFO L225 Difference]: With dead ends: 64 [2021-11-13 18:50:19,503 INFO L226 Difference]: Without dead ends: 30 [2021-11-13 18:50:19,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:50:19,512 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:50:19,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 2.48ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:50:19,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-13 18:50:19,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-13 18:50:19,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 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) [2021-11-13 18:50:19,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2021-11-13 18:50:19,545 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 10 [2021-11-13 18:50:19,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:50:19,545 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-11-13 18:50:19,545 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) [2021-11-13 18:50:19,546 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2021-11-13 18:50:19,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 18:50:19,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:50:19,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:50:19,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:50:19,547 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:50:19,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:50:19,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1289188121, now seen corresponding path program 1 times [2021-11-13 18:50:19,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:50:19,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536867237] [2021-11-13 18:50:19,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:19,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:50:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:50:19,605 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:50:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:50:19,664 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:50:19,665 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:50:19,667 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:50:19,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:50:19,674 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-13 18:50:19,679 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:50:19,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:50:19 BoogieIcfgContainer [2021-11-13 18:50:19,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 18:50:19,729 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:50:19,730 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:50:19,730 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:50:19,731 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:50:19" (3/4) ... [2021-11-13 18:50:19,734 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 18:50:19,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:50:19,736 INFO L158 Benchmark]: Toolchain (without parser) took 1674.29ms. Allocated memory is still 111.1MB. Free memory was 73.7MB in the beginning and 81.7MB in the end (delta: -8.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:50:19,736 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 111.1MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:50:19,738 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.77ms. Allocated memory is still 111.1MB. Free memory was 73.5MB in the beginning and 84.4MB in the end (delta: -11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:50:19,742 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.83ms. Allocated memory is still 111.1MB. Free memory was 84.4MB in the beginning and 82.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:50:19,743 INFO L158 Benchmark]: Boogie Preprocessor took 53.48ms. Allocated memory is still 111.1MB. Free memory was 82.3MB in the beginning and 81.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:50:19,747 INFO L158 Benchmark]: RCFGBuilder took 568.95ms. Allocated memory is still 111.1MB. Free memory was 81.1MB in the beginning and 68.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 18:50:19,747 INFO L158 Benchmark]: TraceAbstraction took 640.00ms. Allocated memory is still 111.1MB. Free memory was 68.0MB in the beginning and 82.2MB in the end (delta: -14.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:50:19,748 INFO L158 Benchmark]: Witness Printer took 5.09ms. Allocated memory is still 111.1MB. Free memory was 82.2MB in the beginning and 81.7MB in the end (delta: 526.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:50:19,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 111.1MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.77ms. Allocated memory is still 111.1MB. Free memory was 73.5MB in the beginning and 84.4MB in the end (delta: -11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.83ms. Allocated memory is still 111.1MB. Free memory was 84.4MB in the beginning and 82.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.48ms. Allocated memory is still 111.1MB. Free memory was 82.3MB in the beginning and 81.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 568.95ms. Allocated memory is still 111.1MB. Free memory was 81.1MB in the beginning and 68.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 640.00ms. Allocated memory is still 111.1MB. Free memory was 68.0MB in the beginning and 82.2MB in the end (delta: -14.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.09ms. Allocated memory is still 111.1MB. Free memory was 82.2MB in the beginning and 81.7MB in the end (delta: 526.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 98]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 43, overapproximation of bitwiseOr at line 44, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryDOUBLEComparisonOperation at line 97. Possible FailurePath: [L19] static const double huge_ceil = 1.0e300; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L93] double x = 0.0; [L94] CALL, EXPR ceil_double(x) [L22] __int32_t i0, i1, j0; [L23] __uint32_t i, j; VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, x=0] [L31] COND TRUE j0 < 20 VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, j0=0, x=0] [L32] COND FALSE !(j0 < 0) [L43] i = (0x000fffff) >> j0 VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, j0=0, x=0] [L44] COND TRUE ((i0 & i) | i1) == 0 [L45] return x; VAL [\old(x)=0, \result=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, j0=0, x=0] [L94] RET, EXPR ceil_double(x) [L94] double res = ceil_double(x); [L97] COND TRUE res != x VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=0, x=0] [L98] reach_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.00ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.00ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 47 mSDtfsCounter, 0 mSolverCounterSat, 2.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-13 18:50:19,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1092b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y --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 b6a79bd811ba30bc3163e272e2b4a2c8d4bc7e99a75fdcec3ffb0e3966342f97 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:50:22,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:50:22,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:50:22,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:50:22,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:50:22,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:50:22,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:50:22,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:50:22,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:50:22,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:50:22,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:50:22,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:50:22,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:50:22,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:50:22,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:50:22,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:50:22,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:50:22,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:50:22,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:50:22,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:50:22,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:50:22,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:50:22,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:50:22,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:50:22,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:50:22,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:50:22,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:50:22,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:50:22,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:50:22,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:50:22,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:50:22,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:50:22,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:50:22,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:50:22,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:50:22,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:50:22,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:50:22,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:50:22,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:50:22,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:50:22,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:50:22,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-13 18:50:22,487 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:50:22,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:50:22,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:50:22,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:50:22,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:50:22,489 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:50:22,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:50:22,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:50:22,491 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:50:22,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:50:22,493 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:50:22,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:50:22,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:50:22,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:50:22,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:50:22,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:50:22,494 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:50:22,494 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:50:22,494 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:50:22,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:50:22,494 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:50:22,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:50:22,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:50:22,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:50:22,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:50:22,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:50:22,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:50:22,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:50:22,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:50:22,496 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:50:22,496 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:50:22,497 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:50:22,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:50:22,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:50:22,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:50:22,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:50:22,498 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_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6a79bd811ba30bc3163e272e2b4a2c8d4bc7e99a75fdcec3ffb0e3966342f97 [2021-11-13 18:50:22,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:50:22,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:50:22,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:50:22,938 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:50:22,939 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:50:22,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/float-newlib/double_req_bl_1092b.c [2021-11-13 18:50:23,008 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/data/59f3a7a40/ba2f7a0a137547fba309b685ca5020cf/FLAGc0e7ecd81 [2021-11-13 18:50:23,531 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:50:23,532 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/sv-benchmarks/c/float-newlib/double_req_bl_1092b.c [2021-11-13 18:50:23,545 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/data/59f3a7a40/ba2f7a0a137547fba309b685ca5020cf/FLAGc0e7ecd81 [2021-11-13 18:50:23,860 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/data/59f3a7a40/ba2f7a0a137547fba309b685ca5020cf [2021-11-13 18:50:23,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:50:23,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:50:23,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:50:23,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:50:23,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:50:23,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:50:23" (1/1) ... [2021-11-13 18:50:23,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de2530d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:23, skipping insertion in model container [2021-11-13 18:50:23,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:50:23" (1/1) ... [2021-11-13 18:50:23,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:50:23,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:50:24,050 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_c26adf2a-9389-44cd-aa08-dcaef0deb41f/sv-benchmarks/c/float-newlib/double_req_bl_1092b.c[2109,2122] [2021-11-13 18:50:24,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:50:24,075 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:50:24,130 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_c26adf2a-9389-44cd-aa08-dcaef0deb41f/sv-benchmarks/c/float-newlib/double_req_bl_1092b.c[2109,2122] [2021-11-13 18:50:24,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:50:24,156 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:50:24,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:24 WrapperNode [2021-11-13 18:50:24,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:50:24,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:50:24,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:50:24,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:50:24,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:24" (1/1) ... [2021-11-13 18:50:24,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:24" (1/1) ... [2021-11-13 18:50:24,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:50:24,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:50:24,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:50:24,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:50:24,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:24" (1/1) ... [2021-11-13 18:50:24,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:24" (1/1) ... [2021-11-13 18:50:24,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:24" (1/1) ... [2021-11-13 18:50:24,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:24" (1/1) ... [2021-11-13 18:50:24,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:24" (1/1) ... [2021-11-13 18:50:24,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:24" (1/1) ... [2021-11-13 18:50:24,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:24" (1/1) ... [2021-11-13 18:50:24,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:50:24,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:50:24,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:50:24,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:50:24,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:24" (1/1) ... [2021-11-13 18:50:24,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:50:24,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:50:24,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:50:24,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:50:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-13 18:50:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-13 18:50:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:50:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:50:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:50:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:50:24,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:50:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:50:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:50:26,207 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:50:26,208 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-13 18:50:26,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:50:26 BoogieIcfgContainer [2021-11-13 18:50:26,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:50:26,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:50:26,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:50:26,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:50:26,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:50:23" (1/3) ... [2021-11-13 18:50:26,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b0723cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:50:26, skipping insertion in model container [2021-11-13 18:50:26,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:24" (2/3) ... [2021-11-13 18:50:26,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b0723cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:50:26, skipping insertion in model container [2021-11-13 18:50:26,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:50:26" (3/3) ... [2021-11-13 18:50:26,222 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092b.c [2021-11-13 18:50:26,228 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:50:26,228 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:50:26,301 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:50:26,323 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 [2021-11-13 18:50:26,325 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:50:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 32 states have internal predecessors, (52), 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) [2021-11-13 18:50:26,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 18:50:26,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:50:26,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:50:26,352 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:50:26,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:50:26,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1046119076, now seen corresponding path program 1 times [2021-11-13 18:50:26,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:50:26,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6229672] [2021-11-13 18:50:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:26,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:50:26,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:50:26,384 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:50:26,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:50:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:26,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 18:50:26,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:50:26,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:26,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:50:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:26,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:50:26,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6229672] [2021-11-13 18:50:26,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6229672] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:50:26,605 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:50:26,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:50:26,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918181909] [2021-11-13 18:50:26,608 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:50:26,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:50:26,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:50:26,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:50:26,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:50:26,642 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 32 states have internal predecessors, (52), 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) [2021-11-13 18:50:26,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:50:26,668 INFO L93 Difference]: Finished difference Result 64 states and 102 transitions. [2021-11-13 18:50:26,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:50:26,671 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 [2021-11-13 18:50:26,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:50:26,681 INFO L225 Difference]: With dead ends: 64 [2021-11-13 18:50:26,681 INFO L226 Difference]: Without dead ends: 30 [2021-11-13 18:50:26,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:50:26,692 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.36ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:50:26,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 1.36ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:50:26,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-13 18:50:26,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-13 18:50:26,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 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) [2021-11-13 18:50:26,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2021-11-13 18:50:26,740 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 10 [2021-11-13 18:50:26,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:50:26,740 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-11-13 18:50:26,741 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) [2021-11-13 18:50:26,741 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2021-11-13 18:50:26,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 18:50:26,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:50:26,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:50:26,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:50:26,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:50:26,967 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:50:26,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:50:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1289188121, now seen corresponding path program 1 times [2021-11-13 18:50:26,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:50:26,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051924147] [2021-11-13 18:50:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:26,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:50:26,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:50:26,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:50:26,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:50:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:27,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:50:27,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:50:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:27,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:50:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:27,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:50:27,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051924147] [2021-11-13 18:50:27,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051924147] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:50:27,438 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:50:27,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 18:50:27,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743823388] [2021-11-13 18:50:27,439 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:50:27,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:50:27,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:50:27,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:50:27,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:50:27,442 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2021-11-13 18:50:28,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:50:28,250 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2021-11-13 18:50:28,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:50:28,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 [2021-11-13 18:50:28,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:50:28,253 INFO L225 Difference]: With dead ends: 44 [2021-11-13 18:50:28,253 INFO L226 Difference]: Without dead ends: 33 [2021-11-13 18:50:28,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:50:28,255 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 711.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.71ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 771.63ms IncrementalHoareTripleChecker+Time [2021-11-13 18:50:28,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 167 Invalid, 50 Unknown, 0 Unchecked, 2.71ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 27 Unchecked, 771.63ms Time] [2021-11-13 18:50:28,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-13 18:50:28,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2021-11-13 18:50:28,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 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) [2021-11-13 18:50:28,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2021-11-13 18:50:28,262 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2021-11-13 18:50:28,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:50:28,262 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2021-11-13 18:50:28,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2021-11-13 18:50:28,263 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2021-11-13 18:50:28,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 18:50:28,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:50:28,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:50:28,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-13 18:50:28,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:50:28,476 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:50:28,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:50:28,477 INFO L85 PathProgramCache]: Analyzing trace with hash -58164419, now seen corresponding path program 1 times [2021-11-13 18:50:28,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:50:28,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973343250] [2021-11-13 18:50:28,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:28,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:50:28,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:50:28,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:50:28,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:50:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:28,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:50:28,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:50:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:28,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:50:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:28,861 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:50:28,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973343250] [2021-11-13 18:50:28,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973343250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:50:28,861 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:50:28,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 18:50:28,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919921058] [2021-11-13 18:50:28,862 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:50:28,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:50:28,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:50:28,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:50:28,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:50:28,870 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:50:28,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:50:28,941 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2021-11-13 18:50:28,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:50:28,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-13 18:50:28,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:50:28,943 INFO L225 Difference]: With dead ends: 40 [2021-11-13 18:50:28,943 INFO L226 Difference]: Without dead ends: 24 [2021-11-13 18:50:28,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:50:28,945 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.22ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 26.40ms IncrementalHoareTripleChecker+Time [2021-11-13 18:50:28,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 70 Invalid, 27 Unknown, 0 Unchecked, 1.22ms Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 16 Unchecked, 26.40ms Time] [2021-11-13 18:50:28,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-13 18:50:28,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 17. [2021-11-13 18:50:28,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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) [2021-11-13 18:50:28,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-11-13 18:50:28,949 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2021-11-13 18:50:28,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:50:28,949 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-13 18:50:28,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:50:28,949 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-11-13 18:50:28,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-13 18:50:28,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:50:28,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:50:28,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:50:29,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:50:29,152 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:50:29,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:50:29,152 INFO L85 PathProgramCache]: Analyzing trace with hash -713684991, now seen corresponding path program 1 times [2021-11-13 18:50:29,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:50:29,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164002680] [2021-11-13 18:50:29,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:29,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:50:29,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:50:29,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:50:29,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:50:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:29,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:50:29,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:50:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:29,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:50:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:33,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:50:33,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164002680] [2021-11-13 18:50:33,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164002680] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:50:33,886 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:50:33,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:50:33,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091136688] [2021-11-13 18:50:33,887 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:50:33,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:50:33,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:50:33,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:50:33,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:50:33,888 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 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) [2021-11-13 18:50:34,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:50:34,354 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-11-13 18:50:34,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:50:34,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 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) Word has length 14 [2021-11-13 18:50:34,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:50:34,363 INFO L225 Difference]: With dead ends: 24 [2021-11-13 18:50:34,364 INFO L226 Difference]: Without dead ends: 17 [2021-11-13 18:50:34,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:50:34,365 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 440.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 462.44ms IncrementalHoareTripleChecker+Time [2021-11-13 18:50:34,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 24 Invalid, 8 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 462.44ms Time] [2021-11-13 18:50:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-13 18:50:34,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-13 18:50:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-11-13 18:50:34,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-11-13 18:50:34,369 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2021-11-13 18:50:34,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:50:34,369 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-13 18:50:34,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 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) [2021-11-13 18:50:34,370 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-11-13 18:50:34,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 18:50:34,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:50:34,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:50:34,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:50:34,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:50:34,580 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:50:34,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:50:34,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1568599403, now seen corresponding path program 1 times [2021-11-13 18:50:34,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:50:34,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744262496] [2021-11-13 18:50:34,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:34,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:50:34,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:50:34,585 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:50:34,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:50:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:34,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:50:34,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:50:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:34,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:50:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:35,008 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:50:35,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744262496] [2021-11-13 18:50:35,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744262496] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:50:35,015 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:50:35,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:50:35,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958952623] [2021-11-13 18:50:35,016 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:50:35,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:50:35,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:50:35,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:50:35,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:50:35,017 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:50:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:50:35,062 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-11-13 18:50:35,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:50:35,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-13 18:50:35,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:50:35,065 INFO L225 Difference]: With dead ends: 24 [2021-11-13 18:50:35,065 INFO L226 Difference]: Without dead ends: 17 [2021-11-13 18:50:35,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:50:35,066 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.48ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 18.77ms IncrementalHoareTripleChecker+Time [2021-11-13 18:50:35,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 29 Invalid, 14 Unknown, 0 Unchecked, 0.48ms Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 9 Unchecked, 18.77ms Time] [2021-11-13 18:50:35,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-13 18:50:35,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-13 18:50:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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) [2021-11-13 18:50:35,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-13 18:50:35,074 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2021-11-13 18:50:35,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:50:35,074 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-13 18:50:35,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:50:35,075 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-13 18:50:35,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-13 18:50:35,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:50:35,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:50:35,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:50:35,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:50:35,277 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:50:35,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:50:35,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1786240041, now seen corresponding path program 1 times [2021-11-13 18:50:35,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:50:35,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783062482] [2021-11-13 18:50:35,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:35,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:50:35,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:50:35,279 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:50:35,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:50:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:35,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:50:35,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:50:35,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-11-13 18:50:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:35,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:50:35,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-11-13 18:50:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:35,773 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:50:35,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783062482] [2021-11-13 18:50:35,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783062482] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:50:35,774 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:50:35,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:50:35,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843509044] [2021-11-13 18:50:35,774 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:50:35,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:50:35,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:50:35,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:50:35,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:50:35,776 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-13 18:50:35,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:50:35,907 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2021-11-13 18:50:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:50:35,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 [2021-11-13 18:50:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:50:35,908 INFO L225 Difference]: With dead ends: 24 [2021-11-13 18:50:35,908 INFO L226 Difference]: Without dead ends: 17 [2021-11-13 18:50:35,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:50:35,910 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.50ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:50:35,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 11 Invalid, 10 Unknown, 0 Unchecked, 0.50ms Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 104.13ms Time] [2021-11-13 18:50:35,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-13 18:50:35,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-13 18:50:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0) internal successors, (16), 16 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:50:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2021-11-13 18:50:35,914 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 16 [2021-11-13 18:50:35,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:50:35,914 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2021-11-13 18:50:35,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-13 18:50:35,915 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2021-11-13 18:50:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-13 18:50:35,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:50:35,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:50:35,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:50:36,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:50:36,116 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:50:36,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:50:36,117 INFO L85 PathProgramCache]: Analyzing trace with hash -11232679, now seen corresponding path program 1 times [2021-11-13 18:50:36,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:50:36,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601208610] [2021-11-13 18:50:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:36,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:50:36,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:50:36,118 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:50:36,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26adf2a-9389-44cd-aa08-dcaef0deb41f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:50:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:36,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 18:50:36,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:50:36,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-13 18:50:36,969 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:50:36,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 76 [2021-11-13 18:50:37,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25