./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V --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 e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:36:24,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:36:24,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:36:24,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:36:24,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:36:24,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:36:24,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:36:24,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:36:24,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:36:24,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:36:24,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:36:24,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:36:24,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:36:24,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:36:24,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:36:24,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:36:24,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:36:24,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:36:24,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:36:24,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:36:24,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:36:24,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:36:24,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:36:24,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:36:24,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:36:24,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:36:24,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:36:24,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:36:24,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:36:24,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:36:24,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:36:24,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:36:24,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:36:24,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:36:24,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:36:24,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:36:24,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:36:24,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:36:24,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:36:24,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:36:24,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:36:24,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:36:24,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:36:24,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:36:24,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:36:24,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:36:24,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:36:24,769 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:36:24,770 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:36:24,770 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:36:24,770 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:36:24,770 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:36:24,772 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:36:24,772 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:36:24,772 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:36:24,772 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:36:24,773 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:36:24,773 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:36:24,773 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:36:24,774 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:36:24,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:36:24,775 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:36:24,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:36:24,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:36:24,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:36:24,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:36:24,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:36:24,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:36:24,779 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:36:24,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:36:24,780 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:36:24,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:36:24,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:36:24,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:36:24,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:36:24,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:36:24,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:36:24,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:36:24,782 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:36:24,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:36:24,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:36:24,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:36:24,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:36:24,783 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_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 [2021-11-23 03:36:25,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:36:25,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:36:25,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:36:25,125 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:36:25,125 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:36:25,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-benchs/filter2.c [2021-11-23 03:36:25,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/data/983063f5c/56ca9015235340d4ab8969bf6f496923/FLAG40fd1c23b [2021-11-23 03:36:25,824 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:36:25,824 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/sv-benchmarks/c/float-benchs/filter2.c [2021-11-23 03:36:25,837 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/data/983063f5c/56ca9015235340d4ab8969bf6f496923/FLAG40fd1c23b [2021-11-23 03:36:26,166 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/data/983063f5c/56ca9015235340d4ab8969bf6f496923 [2021-11-23 03:36:26,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:36:26,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:36:26,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:36:26,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:36:26,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:36:26,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:26" (1/1) ... [2021-11-23 03:36:26,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530ca5c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26, skipping insertion in model container [2021-11-23 03:36:26,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:26" (1/1) ... [2021-11-23 03:36:26,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:36:26,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:36:26,416 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_17144342-8cbd-4f2a-afdf-f9c1acac8127/sv-benchmarks/c/float-benchs/filter2.c[652,665] [2021-11-23 03:36:26,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:36:26,444 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:36:26,459 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_17144342-8cbd-4f2a-afdf-f9c1acac8127/sv-benchmarks/c/float-benchs/filter2.c[652,665] [2021-11-23 03:36:26,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:36:26,480 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:36:26,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26 WrapperNode [2021-11-23 03:36:26,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:36:26,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:36:26,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:36:26,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:36:26,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2021-11-23 03:36:26,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2021-11-23 03:36:26,527 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2021-11-23 03:36:26,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:36:26,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:36:26,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:36:26,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:36:26,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2021-11-23 03:36:26,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2021-11-23 03:36:26,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2021-11-23 03:36:26,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2021-11-23 03:36:26,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2021-11-23 03:36:26,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2021-11-23 03:36:26,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2021-11-23 03:36:26,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:36:26,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:36:26,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:36:26,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:36:26,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2021-11-23 03:36:26,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:36:26,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:36:26,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:36:26,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:36:26,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:36:26,685 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:36:26,686 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:36:26,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:36:26,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:36:26,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:36:26,771 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:36:26,773 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:36:26,962 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:36:26,981 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:36:26,998 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:36:27,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:27 BoogieIcfgContainer [2021-11-23 03:36:27,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:36:27,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:36:27,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:36:27,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:36:27,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:36:26" (1/3) ... [2021-11-23 03:36:27,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f14f40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:27, skipping insertion in model container [2021-11-23 03:36:27,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (2/3) ... [2021-11-23 03:36:27,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f14f40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:27, skipping insertion in model container [2021-11-23 03:36:27,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:27" (3/3) ... [2021-11-23 03:36:27,009 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2.c [2021-11-23 03:36:27,014 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:36:27,014 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:36:27,062 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:36:27,069 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 [2021-11-23 03:36:27,070 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:36:27,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:36:27,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:36:27,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:27,107 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:27,108 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:27,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:27,118 INFO L85 PathProgramCache]: Analyzing trace with hash -251003801, now seen corresponding path program 1 times [2021-11-23 03:36:27,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:27,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900109771] [2021-11-23 03:36:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:27,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:36:27,312 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:36:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:36:27,371 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 03:36:27,373 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:36:27,375 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:36:27,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:36:27,383 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 03:36:27,387 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:36:27,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:36:27 BoogieIcfgContainer [2021-11-23 03:36:27,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:36:27,414 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:36:27,414 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:36:27,414 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:36:27,415 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:27" (3/4) ... [2021-11-23 03:36:27,418 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 03:36:27,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:36:27,420 INFO L158 Benchmark]: Toolchain (without parser) took 1248.09ms. Allocated memory is still 104.9MB. Free memory was 72.2MB in the beginning and 52.4MB in the end (delta: 19.8MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2021-11-23 03:36:27,421 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:36:27,421 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.82ms. Allocated memory is still 104.9MB. Free memory was 72.0MB in the beginning and 79.3MB in the end (delta: -7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:36:27,422 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.54ms. Allocated memory is still 104.9MB. Free memory was 79.3MB in the beginning and 78.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:36:27,423 INFO L158 Benchmark]: Boogie Preprocessor took 40.36ms. Allocated memory is still 104.9MB. Free memory was 78.0MB in the beginning and 76.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:36:27,424 INFO L158 Benchmark]: RCFGBuilder took 430.44ms. Allocated memory is still 104.9MB. Free memory was 76.6MB in the beginning and 67.1MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:36:27,425 INFO L158 Benchmark]: TraceAbstraction took 410.85ms. Allocated memory is still 104.9MB. Free memory was 66.5MB in the beginning and 52.8MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 03:36:27,425 INFO L158 Benchmark]: Witness Printer took 5.23ms. Allocated memory is still 104.9MB. Free memory was 52.8MB in the beginning and 52.4MB in the end (delta: 374.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:36:27,429 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.82ms. Allocated memory is still 104.9MB. Free memory was 72.0MB in the beginning and 79.3MB in the end (delta: -7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.54ms. Allocated memory is still 104.9MB. Free memory was 79.3MB in the beginning and 78.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.36ms. Allocated memory is still 104.9MB. Free memory was 78.0MB in the beginning and 76.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 430.44ms. Allocated memory is still 104.9MB. Free memory was 76.6MB in the beginning and 67.1MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 410.85ms. Allocated memory is still 104.9MB. Free memory was 66.5MB in the beginning and 52.8MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.23ms. Allocated memory is still 104.9MB. Free memory was 52.8MB in the beginning and 52.4MB in the end (delta: 374.8kB). 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 44, overapproximation of to_real at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42. Possible FailurePath: [L22] double E, E0, E1, S0, S1, S; [L23] int i; [L25] E = __VERIFIER_nondet_double() [L26] E0 = __VERIFIER_nondet_double() [L27] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L27] RET assume_abort_if_not(E >= 0. && E <= 1.) [L28] CALL assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L28] RET assume_abort_if_not(E0 >= 0. && E0 <= 1.) [L30] S0 = 0 [L31] S = 0 [L33] i = 0 VAL [i=0] [L33] COND TRUE i <= 1000000 [L34] E1 = E0 [L35] E0 = E [L37] E = __VERIFIER_nondet_double() [L38] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L38] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=49, E=50, E=51, i=0] [L40] S1 = S0 [L41] S0 = S [L42] S = 0.7*E - E0*1.3 + E1*1.1 + S0*1.4 - S1*0.7 [L44] CALL __VERIFIER_assert(S >= -4. && S <= 4.) [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, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 3, 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=14occurred 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, 15 NumberOfCodeBlocks, 15 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 [2021-11-23 03:36:27,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/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_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V --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 e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:36:30,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:36:30,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:36:30,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:36:30,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:36:30,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:36:30,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:36:30,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:36:30,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:36:30,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:36:30,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:36:30,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:36:30,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:36:30,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:36:30,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:36:30,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:36:30,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:36:30,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:36:30,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:36:30,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:36:30,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:36:30,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:36:30,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:36:30,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:36:30,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:36:30,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:36:30,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:36:30,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:36:30,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:36:30,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:36:30,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:36:30,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:36:30,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:36:30,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:36:30,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:36:30,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:36:30,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:36:30,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:36:30,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:36:30,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:36:30,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:36:30,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 03:36:30,284 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:36:30,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:36:30,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:36:30,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:36:30,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:36:30,288 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:36:30,288 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:36:30,288 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:36:30,289 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:36:30,289 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:36:30,290 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:36:30,290 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:36:30,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:36:30,292 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:36:30,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:36:30,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:36:30,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:36:30,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:36:30,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:36:30,294 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:36:30,294 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:36:30,294 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:36:30,294 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:36:30,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:36:30,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:36:30,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:36:30,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:36:30,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:36:30,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:36:30,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:36:30,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:36:30,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:36:30,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:36:30,297 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:36:30,298 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:36:30,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:36:30,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:36:30,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:36:30,299 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_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e42e84729022b725ebcfce66d0ece68757a1a9b385230356b4d45a24fc6b4ef2 [2021-11-23 03:36:30,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:36:30,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:36:30,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:36:30,738 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:36:30,739 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:36:30,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-benchs/filter2.c [2021-11-23 03:36:30,826 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/data/b186e89ee/cf336df411ad4d778d97709aca6626a4/FLAG60643a902 [2021-11-23 03:36:31,430 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:36:31,431 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/sv-benchmarks/c/float-benchs/filter2.c [2021-11-23 03:36:31,439 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/data/b186e89ee/cf336df411ad4d778d97709aca6626a4/FLAG60643a902 [2021-11-23 03:36:31,836 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/data/b186e89ee/cf336df411ad4d778d97709aca6626a4 [2021-11-23 03:36:31,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:36:31,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:36:31,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:36:31,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:36:31,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:36:31,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:31" (1/1) ... [2021-11-23 03:36:31,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a673c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:31, skipping insertion in model container [2021-11-23 03:36:31,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:31" (1/1) ... [2021-11-23 03:36:31,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:36:31,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:36:32,017 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_17144342-8cbd-4f2a-afdf-f9c1acac8127/sv-benchmarks/c/float-benchs/filter2.c[652,665] [2021-11-23 03:36:32,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:36:32,049 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:36:32,090 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_17144342-8cbd-4f2a-afdf-f9c1acac8127/sv-benchmarks/c/float-benchs/filter2.c[652,665] [2021-11-23 03:36:32,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:36:32,160 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:36:32,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:32 WrapperNode [2021-11-23 03:36:32,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:36:32,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:36:32,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:36:32,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:36:32,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:32" (1/1) ... [2021-11-23 03:36:32,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:32" (1/1) ... [2021-11-23 03:36:32,221 INFO L137 Inliner]: procedures = 15, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2021-11-23 03:36:32,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:36:32,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:36:32,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:36:32,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:36:32,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:32" (1/1) ... [2021-11-23 03:36:32,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:32" (1/1) ... [2021-11-23 03:36:32,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:32" (1/1) ... [2021-11-23 03:36:32,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:32" (1/1) ... [2021-11-23 03:36:32,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:32" (1/1) ... [2021-11-23 03:36:32,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:32" (1/1) ... [2021-11-23 03:36:32,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:32" (1/1) ... [2021-11-23 03:36:32,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:36:32,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:36:32,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:36:32,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:36:32,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:32" (1/1) ... [2021-11-23 03:36:32,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:36:32,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:36:32,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:36:32,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:36:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:36:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 03:36:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:36:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:36:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:36:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:36:32,475 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:36:32,477 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:36:34,917 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:36:34,924 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:36:34,924 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:36:34,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:34 BoogieIcfgContainer [2021-11-23 03:36:34,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:36:34,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:36:34,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:36:34,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:36:34,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:36:31" (1/3) ... [2021-11-23 03:36:34,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370e73cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:34, skipping insertion in model container [2021-11-23 03:36:34,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:32" (2/3) ... [2021-11-23 03:36:34,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370e73cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:34, skipping insertion in model container [2021-11-23 03:36:34,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:34" (3/3) ... [2021-11-23 03:36:34,936 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2.c [2021-11-23 03:36:34,943 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:36:34,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:36:34,999 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:36:35,008 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 [2021-11-23 03:36:35,008 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:36:35,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:36:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:36:35,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:35,033 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:35,033 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:35,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:35,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1602622425, now seen corresponding path program 1 times [2021-11-23 03:36:35,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:36:35,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426559918] [2021-11-23 03:36:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:35,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:36:35,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:36:35,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:36:35,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:36:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:36,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 03:36:36,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:36:36,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 03:36:36,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:36:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 03:36:36,941 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:36:36,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426559918] [2021-11-23 03:36:36,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426559918] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:36,943 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:36,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:36:36,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635504946] [2021-11-23 03:36:36,946 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:36,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:36:36,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:36:36,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:36:36,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:36:36,997 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:36:37,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:37,018 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2021-11-23 03:36:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:36:37,021 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-11-23 03:36:37,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:37,029 INFO L225 Difference]: With dead ends: 39 [2021-11-23 03:36:37,029 INFO L226 Difference]: Without dead ends: 17 [2021-11-23 03:36:37,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:36:37,038 INFO L933 BasicCegarLoop]: 23 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, 23 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 [2021-11-23 03:36:37,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:36:37,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-23 03:36:37,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-23 03:36:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:36:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-11-23 03:36:37,093 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 22 [2021-11-23 03:36:37,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:37,094 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-23 03:36:37,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:36:37,095 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-11-23 03:36:37,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:36:37,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:37,099 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:37,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 03:36:37,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:36:37,314 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:37,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:37,315 INFO L85 PathProgramCache]: Analyzing trace with hash 168652453, now seen corresponding path program 1 times [2021-11-23 03:36:37,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:36:37,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048031273] [2021-11-23 03:36:37,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:37,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:36:37,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:36:37,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:36:37,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17144342-8cbd-4f2a-afdf-f9c1acac8127/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:36:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:43,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 03:36:43,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:44,383 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~E0~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~E~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~E1~0#1| (_ FloatingPoint 11 53))) (let ((.cse6 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (let ((.cse2 (let ((.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main_~E~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven .cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven .cse5 .cse4)))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (let ((.cse0 (fp.leq .cse2 .cse3)) (.cse1 (fp.geq .cse2 (fp.neg .cse3)))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (or (not .cse0) (not .cse1))) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse0 .cse1)))) (fp.geq |ULTIMATE.start_main_~E1~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E1~0#1| .cse6) (fp.geq |ULTIMATE.start_main_~E0~0#1| (_ +zero 11 53)) (fp.geq |ULTIMATE.start_main_~E~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E0~0#1| .cse6) (fp.leq |ULTIMATE.start_main_~E~0#1| .cse6)))) is different from false [2021-11-23 03:48:46,437 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~E0~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~E~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~E1~0#1| (_ FloatingPoint 11 53))) (let ((.cse6 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (let ((.cse2 (let ((.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main_~E~0#1|) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E0~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~E1~0#1| ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven .cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven .cse5 .cse4)))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (let ((.cse0 (fp.leq .cse2 .cse3)) (.cse1 (fp.geq .cse2 (fp.neg .cse3)))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (or (not .cse0) (not .cse1))) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse0 .cse1)))) (fp.geq |ULTIMATE.start_main_~E1~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E1~0#1| .cse6) (fp.geq |ULTIMATE.start_main_~E0~0#1| (_ +zero 11 53)) (fp.geq |ULTIMATE.start_main_~E~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~E0~0#1| .cse6) (fp.leq |ULTIMATE.start_main_~E~0#1| .cse6)))) is different from true