./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter2_set.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_set.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:36:16,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:36:16,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:36:16,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:36:16,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:36:16,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:36:16,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:36:16,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:36:16,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:36:16,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:36:16,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:36:16,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:36:16,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:36:16,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:36:16,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:36:16,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:36:16,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:36:16,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:36:16,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:36:16,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:36:16,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:36:16,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:36:16,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:36:16,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:36:16,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:36:16,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:36:16,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:36:16,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:36:16,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:36:16,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:36:16,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:36:16,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:36:16,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:36:16,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:36:16,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:36:16,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:36:16,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:36:16,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:36:16,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:36:16,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:36:16,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:36:16,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:36:16,759 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:36:16,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:36:16,760 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:36:16,760 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:36:16,761 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:36:16,761 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:36:16,761 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:36:16,762 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:36:16,762 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:36:16,762 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:36:16,763 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:36:16,763 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:36:16,763 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:36:16,763 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:36:16,764 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:36:16,764 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:36:16,764 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:36:16,765 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:36:16,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:36:16,766 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:36:16,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:36:16,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:36:16,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:36:16,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:36:16,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:36:16,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:36:16,768 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:36:16,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:36:16,769 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:36:16,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:36:16,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:36:16,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:36:16,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:36:16,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:36:16,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:36:16,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:36:16,771 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:36:16,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:36:16,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:36:16,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:36:16,772 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:36:16,773 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 [2021-11-21 01:36:17,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:36:17,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:36:17,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:36:17,129 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:36:17,129 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:36:17,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/filter2_set.c [2021-11-21 01:36:17,223 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/data/6c6874ff7/c230c1dc8bd848acaffc1eb13189f741/FLAGe1018c370 [2021-11-21 01:36:17,790 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:36:17,790 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/sv-benchmarks/c/float-benchs/filter2_set.c [2021-11-21 01:36:17,798 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/data/6c6874ff7/c230c1dc8bd848acaffc1eb13189f741/FLAGe1018c370 [2021-11-21 01:36:18,156 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/data/6c6874ff7/c230c1dc8bd848acaffc1eb13189f741 [2021-11-21 01:36:18,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:36:18,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:36:18,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:36:18,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:36:18,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:36:18,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:36:18" (1/1) ... [2021-11-21 01:36:18,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1798d76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:18, skipping insertion in model container [2021-11-21 01:36:18,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:36:18" (1/1) ... [2021-11-21 01:36:18,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:36:18,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:36:18,381 WARN L230 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_919d7532-0108-44fc-9a24-8b37a124fa45/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2021-11-21 01:36:18,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:36:18,410 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:36:18,423 WARN L230 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_919d7532-0108-44fc-9a24-8b37a124fa45/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2021-11-21 01:36:18,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:36:18,448 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:36:18,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:18 WrapperNode [2021-11-21 01:36:18,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:36:18,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:36:18,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:36:18,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:36:18,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:18" (1/1) ... [2021-11-21 01:36:18,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:18" (1/1) ... [2021-11-21 01:36:18,486 INFO L137 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2021-11-21 01:36:18,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:36:18,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:36:18,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:36:18,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:36:18,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:18" (1/1) ... [2021-11-21 01:36:18,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:18" (1/1) ... [2021-11-21 01:36:18,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:18" (1/1) ... [2021-11-21 01:36:18,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:18" (1/1) ... [2021-11-21 01:36:18,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:18" (1/1) ... [2021-11-21 01:36:18,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:18" (1/1) ... [2021-11-21 01:36:18,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:18" (1/1) ... [2021-11-21 01:36:18,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:36:18,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:36:18,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:36:18,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:36:18,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:18" (1/1) ... [2021-11-21 01:36:18,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:36:18,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:36:18,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:36:18,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:36:18,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:36:18,626 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:36:18,626 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:36:18,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:36:18,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:36:18,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:36:18,712 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:36:18,714 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:36:18,931 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:36:18,973 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:36:18,973 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:36:18,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:36:18 BoogieIcfgContainer [2021-11-21 01:36:18,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:36:18,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:36:18,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:36:18,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:36:18,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:36:18" (1/3) ... [2021-11-21 01:36:18,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac56cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:36:18, skipping insertion in model container [2021-11-21 01:36:18,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:18" (2/3) ... [2021-11-21 01:36:18,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac56cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:36:18, skipping insertion in model container [2021-11-21 01:36:18,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:36:18" (3/3) ... [2021-11-21 01:36:18,993 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_set.c [2021-11-21 01:36:19,001 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:36:19,001 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:36:19,049 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:36:19,058 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=FINITE_AUTOMATA, 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 [2021-11-21 01:36:19,058 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:36:19,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:36:19,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-21 01:36:19,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:19,086 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:36:19,087 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:36:19,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:19,093 INFO L85 PathProgramCache]: Analyzing trace with hash -356154640, now seen corresponding path program 1 times [2021-11-21 01:36:19,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:19,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262298715] [2021-11-21 01:36:19,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:19,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:36:19,290 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:36:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:36:19,396 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:36:19,398 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:36:19,399 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:36:19,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:36:19,405 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 01:36:19,413 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:36:19,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:36:19 BoogieIcfgContainer [2021-11-21 01:36:19,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:36:19,458 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:36:19,458 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:36:19,458 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:36:19,459 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:36:18" (3/4) ... [2021-11-21 01:36:19,462 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:36:19,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:36:19,464 INFO L158 Benchmark]: Toolchain (without parser) took 1303.38ms. Allocated memory is still 104.9MB. Free memory was 73.1MB in the beginning and 49.3MB in the end (delta: 23.8MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2021-11-21 01:36:19,465 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory was 56.8MB in the beginning and 56.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:36:19,466 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.80ms. Allocated memory is still 104.9MB. Free memory was 73.1MB in the beginning and 79.1MB in the end (delta: -6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:36:19,467 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.23ms. Allocated memory is still 104.9MB. Free memory was 79.1MB in the beginning and 77.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:36:19,468 INFO L158 Benchmark]: Boogie Preprocessor took 22.05ms. Allocated memory is still 104.9MB. Free memory was 77.4MB in the beginning and 76.6MB in the end (delta: 768.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:36:19,469 INFO L158 Benchmark]: RCFGBuilder took 465.76ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 65.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:36:19,470 INFO L158 Benchmark]: TraceAbstraction took 478.50ms. Allocated memory is still 104.9MB. Free memory was 65.4MB in the beginning and 49.7MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-21 01:36:19,470 INFO L158 Benchmark]: Witness Printer took 5.14ms. Allocated memory is still 104.9MB. Free memory was 49.7MB in the beginning and 49.3MB in the end (delta: 384.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:36:19,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory was 56.8MB in the beginning and 56.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.80ms. Allocated memory is still 104.9MB. Free memory was 73.1MB in the beginning and 79.1MB in the end (delta: -6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.23ms. Allocated memory is still 104.9MB. Free memory was 79.1MB in the beginning and 77.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.05ms. Allocated memory is still 104.9MB. Free memory was 77.4MB in the beginning and 76.6MB in the end (delta: 768.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 465.76ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 65.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 478.50ms. Allocated memory is still 104.9MB. Free memory was 65.4MB in the beginning and 49.7MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.14ms. Allocated memory is still 104.9MB. Free memory was 49.7MB in the beginning and 49.3MB in the end (delta: 384.1kB). 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: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 57, overapproximation of to_real at line 43, overapproximation of someBinaryArithmeticDOUBLEoperation at line 55. Possible FailurePath: [L22] double E, E0, E1, S0, S1, S; [L23] double A1, A2, A3, B1, B2; [L24] int i; [L26] A1 = __VERIFIER_nondet_double() [L27] A2 = __VERIFIER_nondet_double() [L28] A3 = __VERIFIER_nondet_double() [L29] B1 = __VERIFIER_nondet_double() [L30] B2 = __VERIFIER_nondet_double() [L31] CALL assume_abort_if_not(A1 >= 0.69 && A1 <= 0.71) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L31] RET assume_abort_if_not(A1 >= 0.69 && A1 <= 0.71) [L32] CALL assume_abort_if_not(A2 >= -1.31 && A2 <= -1.29) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L32] RET assume_abort_if_not(A2 >= -1.31 && A2 <= -1.29) [L33] CALL assume_abort_if_not(A3 >= 1.09 && A3 <= 1.11) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L33] RET assume_abort_if_not(A3 >= 1.09 && A3 <= 1.11) [L34] CALL assume_abort_if_not(B1 >= 1.39 && B1 <= 1.41) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L34] RET assume_abort_if_not(B1 >= 1.39 && B1 <= 1.41) [L35] CALL assume_abort_if_not(B2 >= -0.71 && B2 <= -0.69) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L35] RET assume_abort_if_not(B2 >= -0.71 && B2 <= -0.69) [L38] E = __VERIFIER_nondet_double() [L39] E0 = __VERIFIER_nondet_double() [L40] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L40] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=49, E=52] [L41] CALL assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L41] RET assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [E=49, E=52] [L43] S0 = 0 [L44] S = 0 [L46] i = 0 VAL [E=49, E=52, i=0] [L46] COND TRUE i <= 1000000 [L47] E1 = E0 [L48] E0 = E [L50] E = __VERIFIER_nondet_double() [L51] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L51] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=51, E=49, E=52, i=0] [L53] S1 = S0 [L54] S0 = S [L55] S = A1*E - E0*A2 + E1*A3 + S0*B1 + S1*B2 [L57] CALL __VERIFIER_assert(S >= -100. && S <= 100.) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L17] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-21 01:36:19,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_set.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:36:22,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:36:22,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:36:22,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:36:22,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:36:22,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:36:22,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:36:22,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:36:22,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:36:22,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:36:22,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:36:22,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:36:22,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:36:22,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:36:22,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:36:22,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:36:22,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:36:22,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:36:22,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:36:22,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:36:22,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:36:22,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:36:22,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:36:22,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:36:22,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:36:22,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:36:22,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:36:22,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:36:22,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:36:22,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:36:22,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:36:22,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:36:22,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:36:22,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:36:22,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:36:22,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:36:22,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:36:22,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:36:22,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:36:22,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:36:22,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:36:22,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:36:22,577 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:36:22,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:36:22,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:36:22,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:36:22,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:36:22,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:36:22,579 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:36:22,580 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:36:22,581 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:36:22,581 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:36:22,582 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:36:22,582 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:36:22,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:36:22,584 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:36:22,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:36:22,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:36:22,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:36:22,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:36:22,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:36:22,586 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:36:22,586 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:36:22,586 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:36:22,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:36:22,586 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:36:22,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:36:22,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:36:22,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:36:22,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:36:22,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:36:22,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:36:22,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:36:22,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:36:22,589 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:36:22,589 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:36:22,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:36:22,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:36:22,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:36:22,590 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_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 [2021-11-21 01:36:23,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:36:23,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:36:23,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:36:23,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:36:23,110 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:36:23,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/filter2_set.c [2021-11-21 01:36:23,211 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/data/5f2cd92fc/5013f8b37bb94322b0fa12b30c85f61a/FLAGd7f498feb [2021-11-21 01:36:23,869 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:36:23,870 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/sv-benchmarks/c/float-benchs/filter2_set.c [2021-11-21 01:36:23,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/data/5f2cd92fc/5013f8b37bb94322b0fa12b30c85f61a/FLAGd7f498feb [2021-11-21 01:36:24,228 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/data/5f2cd92fc/5013f8b37bb94322b0fa12b30c85f61a [2021-11-21 01:36:24,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:36:24,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:36:24,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:36:24,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:36:24,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:36:24,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:36:24" (1/1) ... [2021-11-21 01:36:24,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77f7084e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:24, skipping insertion in model container [2021-11-21 01:36:24,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:36:24" (1/1) ... [2021-11-21 01:36:24,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:36:24,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:36:24,494 WARN L230 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_919d7532-0108-44fc-9a24-8b37a124fa45/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2021-11-21 01:36:24,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:36:24,554 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:36:24,579 WARN L230 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_919d7532-0108-44fc-9a24-8b37a124fa45/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2021-11-21 01:36:24,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:36:24,606 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:36:24,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:24 WrapperNode [2021-11-21 01:36:24,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:36:24,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:36:24,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:36:24,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:36:24,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:24" (1/1) ... [2021-11-21 01:36:24,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:24" (1/1) ... [2021-11-21 01:36:24,642 INFO L137 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2021-11-21 01:36:24,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:36:24,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:36:24,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:36:24,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:36:24,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:24" (1/1) ... [2021-11-21 01:36:24,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:24" (1/1) ... [2021-11-21 01:36:24,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:24" (1/1) ... [2021-11-21 01:36:24,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:24" (1/1) ... [2021-11-21 01:36:24,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:24" (1/1) ... [2021-11-21 01:36:24,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:24" (1/1) ... [2021-11-21 01:36:24,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:24" (1/1) ... [2021-11-21 01:36:24,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:36:24,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:36:24,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:36:24,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:36:24,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:24" (1/1) ... [2021-11-21 01:36:24,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:36:24,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:36:24,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:36:24,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:36:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:36:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:36:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:36:24,766 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:36:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:36:24,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:36:24,873 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:36:24,875 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:36:27,336 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:36:27,344 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:36:27,344 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:36:27,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:36:27 BoogieIcfgContainer [2021-11-21 01:36:27,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:36:27,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:36:27,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:36:27,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:36:27,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:36:24" (1/3) ... [2021-11-21 01:36:27,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50956eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:36:27, skipping insertion in model container [2021-11-21 01:36:27,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:24" (2/3) ... [2021-11-21 01:36:27,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50956eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:36:27, skipping insertion in model container [2021-11-21 01:36:27,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:36:27" (3/3) ... [2021-11-21 01:36:27,357 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_set.c [2021-11-21 01:36:27,363 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:36:27,364 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:36:27,433 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:36:27,441 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=FINITE_AUTOMATA, 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 [2021-11-21 01:36:27,442 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:36:27,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:36:27,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-21 01:36:27,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:27,489 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:36:27,490 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:36:27,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:27,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1697849372, now seen corresponding path program 1 times [2021-11-21 01:36:27,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:36:27,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003651520] [2021-11-21 01:36:27,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:27,514 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:36:27,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:36:27,521 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:36:27,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:36:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:29,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:36:29,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:36:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-21 01:36:29,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:36:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-21 01:36:29,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:36:29,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003651520] [2021-11-21 01:36:29,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003651520] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:36:29,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:36:29,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-21 01:36:29,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124868310] [2021-11-21 01:36:29,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:36:29,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:36:29,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:36:29,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:36:29,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:36:29,841 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 01:36:29,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:29,886 INFO L93 Difference]: Finished difference Result 51 states and 78 transitions. [2021-11-21 01:36:29,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:36:29,894 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2021-11-21 01:36:29,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:29,903 INFO L225 Difference]: With dead ends: 51 [2021-11-21 01:36:29,903 INFO L226 Difference]: Without dead ends: 23 [2021-11-21 01:36:29,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:36:29,916 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:36:29,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:36:29,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-21 01:36:29,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-21 01:36:29,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:36:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2021-11-21 01:36:29,980 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 48 [2021-11-21 01:36:29,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:29,981 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2021-11-21 01:36:29,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 01:36:29,982 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2021-11-21 01:36:29,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-21 01:36:29,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:29,988 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:36:30,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-21 01:36:30,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:36:30,203 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:36:30,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:30,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1417424168, now seen corresponding path program 1 times [2021-11-21 01:36:30,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:36:30,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730275698] [2021-11-21 01:36:30,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:30,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:36:30,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:36:30,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:36:30,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_919d7532-0108-44fc-9a24-8b37a124fa45/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:36:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:39,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-21 01:36:39,839 INFO L286 TraceCheckSpWp]: Computing forward predicates...