./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7 --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 44a691d0c7049cc6934dd4c9eebe75a3ba34b64a09862ea689fabb3c0e0e6b0c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:28:32,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:28:32,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:28:32,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:28:32,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:28:32,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:28:32,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:28:32,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:28:32,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:28:32,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:28:32,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:28:32,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:28:32,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:28:32,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:28:32,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:28:32,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:28:32,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:28:32,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:28:32,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:28:32,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:28:32,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:28:32,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:28:32,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:28:32,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:28:32,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:28:32,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:28:32,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:28:32,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:28:32,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:28:32,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:28:32,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:28:32,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:28:32,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:28:32,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:28:32,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:28:32,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:28:32,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:28:32,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:28:32,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:28:32,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:28:32,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:28:32,705 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:28:32,737 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:28:32,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:28:32,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:28:32,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:28:32,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:28:32,743 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:28:32,744 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:28:32,744 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:28:32,744 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:28:32,744 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:28:32,745 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:28:32,746 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:28:32,746 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:28:32,746 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:28:32,747 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:28:32,747 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:28:32,747 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:28:32,747 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:28:32,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:28:32,748 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:28:32,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:28:32,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:28:32,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:28:32,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:28:32,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:28:32,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:28:32,752 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:28:32,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:28:32,752 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:28:32,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:28:32,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:28:32,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:28:32,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:28:32,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:28:32,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:28:32,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:28:32,755 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:28:32,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:28:32,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:28:32,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:28:32,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:28:32,756 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_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44a691d0c7049cc6934dd4c9eebe75a3ba34b64a09862ea689fabb3c0e0e6b0c [2021-11-25 19:28:33,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:28:33,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:28:33,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:28:33,048 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:28:33,049 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:28:33,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c [2021-11-25 19:28:33,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/data/99f852fb5/5d40ccfc23484a50a9296b1c5f6c9fdc/FLAGc33f8c5dc [2021-11-25 19:28:33,614 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:28:33,618 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c [2021-11-25 19:28:33,627 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/data/99f852fb5/5d40ccfc23484a50a9296b1c5f6c9fdc/FLAGc33f8c5dc [2021-11-25 19:28:34,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/data/99f852fb5/5d40ccfc23484a50a9296b1c5f6c9fdc [2021-11-25 19:28:34,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:28:34,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:28:34,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:28:34,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:28:34,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:28:34,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:28:34" (1/1) ... [2021-11-25 19:28:34,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47511222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:34, skipping insertion in model container [2021-11-25 19:28:34,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:28:34" (1/1) ... [2021-11-25 19:28:34,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:28:34,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:28:34,328 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_efa353b6-9604-4669-a645-e648196cf391/sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c[1995,2008] [2021-11-25 19:28:34,334 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_efa353b6-9604-4669-a645-e648196cf391/sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c[2389,2402] [2021-11-25 19:28:34,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:28:34,394 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:28:34,413 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_efa353b6-9604-4669-a645-e648196cf391/sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c[1995,2008] [2021-11-25 19:28:34,415 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_efa353b6-9604-4669-a645-e648196cf391/sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c[2389,2402] [2021-11-25 19:28:34,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:28:34,483 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:28:34,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:34 WrapperNode [2021-11-25 19:28:34,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:28:34,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:28:34,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:28:34,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:28:34,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:34" (1/1) ... [2021-11-25 19:28:34,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:34" (1/1) ... [2021-11-25 19:28:34,535 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-11-25 19:28:34,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:28:34,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:28:34,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:28:34,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:28:34,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:34" (1/1) ... [2021-11-25 19:28:34,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:34" (1/1) ... [2021-11-25 19:28:34,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:34" (1/1) ... [2021-11-25 19:28:34,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:34" (1/1) ... [2021-11-25 19:28:34,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:34" (1/1) ... [2021-11-25 19:28:34,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:34" (1/1) ... [2021-11-25 19:28:34,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:34" (1/1) ... [2021-11-25 19:28:34,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:28:34,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:28:34,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:28:34,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:28:34,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:34" (1/1) ... [2021-11-25 19:28:34,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:28:34,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:28:34,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:28:34,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:28:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:28:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-25 19:28:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-25 19:28:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-11-25 19:28:34,729 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-11-25 19:28:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:28:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:28:34,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:28:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:28:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:28:34,824 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:28:34,827 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:28:35,242 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:28:35,326 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:28:35,329 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 19:28:35,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:28:35 BoogieIcfgContainer [2021-11-25 19:28:35,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:28:35,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:28:35,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:28:35,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:28:35,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:28:34" (1/3) ... [2021-11-25 19:28:35,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9e7e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:28:35, skipping insertion in model container [2021-11-25 19:28:35,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:34" (2/3) ... [2021-11-25 19:28:35,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9e7e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:28:35, skipping insertion in model container [2021-11-25 19:28:35,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:28:35" (3/3) ... [2021-11-25 19:28:35,345 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_4-2a.c.cil.c [2021-11-25 19:28:35,351 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:28:35,351 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 19:28:35,419 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:28:35,427 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 [2021-11-25 19:28:35,428 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 19:28:35,450 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 37 states have internal predecessors, (52), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 19:28:35,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 19:28:35,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:28:35,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 19:28:35,457 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:28:35,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:28:35,464 INFO L85 PathProgramCache]: Analyzing trace with hash 6807338, now seen corresponding path program 1 times [2021-11-25 19:28:35,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:28:35,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907904495] [2021-11-25 19:28:35,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:28:35,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:28:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:28:35,584 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:28:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:28:35,618 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 19:28:35,621 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:28:35,622 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 19:28:35,625 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 19:28:35,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:28:35,631 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 19:28:35,634 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:28:35,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:28:35 BoogieIcfgContainer [2021-11-25 19:28:35,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:28:35,657 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:28:35,657 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:28:35,657 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:28:35,658 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:28:35" (3/4) ... [2021-11-25 19:28:35,661 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 19:28:35,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:28:35,663 INFO L158 Benchmark]: Toolchain (without parser) took 1638.59ms. Allocated memory is still 121.6MB. Free memory was 86.8MB in the beginning and 60.5MB in the end (delta: 26.3MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2021-11-25 19:28:35,664 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 75.5MB. Free memory was 33.6MB in the beginning and 33.5MB in the end (delta: 45.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:28:35,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 455.09ms. Allocated memory is still 121.6MB. Free memory was 86.7MB in the beginning and 92.5MB in the end (delta: -5.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:28:35,665 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.35ms. Allocated memory is still 121.6MB. Free memory was 92.5MB in the beginning and 91.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:28:35,666 INFO L158 Benchmark]: Boogie Preprocessor took 53.57ms. Allocated memory is still 121.6MB. Free memory was 91.0MB in the beginning and 89.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:28:35,667 INFO L158 Benchmark]: RCFGBuilder took 742.58ms. Allocated memory is still 121.6MB. Free memory was 89.8MB in the beginning and 74.3MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-25 19:28:35,668 INFO L158 Benchmark]: TraceAbstraction took 317.63ms. Allocated memory is still 121.6MB. Free memory was 73.7MB in the beginning and 60.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 19:28:35,668 INFO L158 Benchmark]: Witness Printer took 5.26ms. Allocated memory is still 121.6MB. Free memory is still 60.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:28:35,672 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 75.5MB. Free memory was 33.6MB in the beginning and 33.5MB in the end (delta: 45.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 455.09ms. Allocated memory is still 121.6MB. Free memory was 86.7MB in the beginning and 92.5MB in the end (delta: -5.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.35ms. Allocated memory is still 121.6MB. Free memory was 92.5MB in the beginning and 91.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.57ms. Allocated memory is still 121.6MB. Free memory was 91.0MB in the beginning and 89.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 742.58ms. Allocated memory is still 121.6MB. Free memory was 89.8MB in the beginning and 74.3MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 317.63ms. Allocated memory is still 121.6MB. Free memory was 73.7MB in the beginning and 60.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.26ms. Allocated memory is still 121.6MB. Free memory is still 60.5MB. 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: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.4f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 49 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, 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=49occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 [2021-11-25 19:28:35,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/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_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7 --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 44a691d0c7049cc6934dd4c9eebe75a3ba34b64a09862ea689fabb3c0e0e6b0c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:28:38,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:28:38,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:28:38,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:28:38,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:28:38,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:28:38,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:28:38,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:28:38,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:28:38,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:28:38,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:28:38,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:28:38,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:28:38,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:28:38,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:28:38,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:28:38,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:28:38,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:28:38,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:28:38,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:28:38,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:28:38,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:28:38,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:28:38,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:28:38,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:28:38,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:28:38,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:28:38,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:28:38,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:28:38,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:28:38,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:28:38,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:28:38,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:28:38,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:28:38,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:28:38,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:28:38,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:28:38,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:28:38,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:28:38,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:28:38,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:28:38,361 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 19:28:38,410 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:28:38,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:28:38,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:28:38,411 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:28:38,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:28:38,412 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:28:38,412 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:28:38,412 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:28:38,412 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:28:38,412 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:28:38,413 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:28:38,413 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:28:38,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:28:38,414 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:28:38,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:28:38,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:28:38,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:28:38,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:28:38,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:28:38,415 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:28:38,415 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:28:38,415 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:28:38,416 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:28:38,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:28:38,416 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:28:38,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:28:38,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:28:38,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:28:38,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:28:38,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:28:38,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:28:38,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:28:38,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:28:38,418 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:28:38,418 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:28:38,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:28:38,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:28:38,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:28:38,419 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_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44a691d0c7049cc6934dd4c9eebe75a3ba34b64a09862ea689fabb3c0e0e6b0c [2021-11-25 19:28:38,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:28:38,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:28:38,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:28:38,879 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:28:38,881 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:28:38,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c [2021-11-25 19:28:38,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/data/afc7f6fc3/9ea1d120734d4276aeaefb54f2dd31d2/FLAGb06c649ea [2021-11-25 19:28:39,536 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:28:39,537 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c [2021-11-25 19:28:39,556 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/data/afc7f6fc3/9ea1d120734d4276aeaefb54f2dd31d2/FLAGb06c649ea [2021-11-25 19:28:39,846 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/data/afc7f6fc3/9ea1d120734d4276aeaefb54f2dd31d2 [2021-11-25 19:28:39,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:28:39,853 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:28:39,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:28:39,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:28:39,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:28:39,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:28:39" (1/1) ... [2021-11-25 19:28:39,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b823eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:39, skipping insertion in model container [2021-11-25 19:28:39,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:28:39" (1/1) ... [2021-11-25 19:28:39,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:28:39,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:28:40,144 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_efa353b6-9604-4669-a645-e648196cf391/sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c[1995,2008] [2021-11-25 19:28:40,150 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_efa353b6-9604-4669-a645-e648196cf391/sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c[2389,2402] [2021-11-25 19:28:40,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:28:40,233 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:28:40,252 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_efa353b6-9604-4669-a645-e648196cf391/sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c[1995,2008] [2021-11-25 19:28:40,254 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_efa353b6-9604-4669-a645-e648196cf391/sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c[2389,2402] [2021-11-25 19:28:40,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:28:40,324 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:28:40,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:40 WrapperNode [2021-11-25 19:28:40,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:28:40,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:28:40,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:28:40,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:28:40,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:40" (1/1) ... [2021-11-25 19:28:40,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:40" (1/1) ... [2021-11-25 19:28:40,372 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2021-11-25 19:28:40,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:28:40,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:28:40,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:28:40,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:28:40,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:40" (1/1) ... [2021-11-25 19:28:40,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:40" (1/1) ... [2021-11-25 19:28:40,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:40" (1/1) ... [2021-11-25 19:28:40,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:40" (1/1) ... [2021-11-25 19:28:40,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:40" (1/1) ... [2021-11-25 19:28:40,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:40" (1/1) ... [2021-11-25 19:28:40,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:40" (1/1) ... [2021-11-25 19:28:40,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:28:40,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:28:40,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:28:40,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:28:40,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:40" (1/1) ... [2021-11-25 19:28:40,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:28:40,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:28:40,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:28:40,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:28:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:28:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:28:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-25 19:28:40,517 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-25 19:28:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-11-25 19:28:40,517 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-11-25 19:28:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:28:40,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:28:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:28:40,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:28:40,605 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:28:40,608 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:28:43,153 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:28:43,162 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:28:43,162 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 19:28:43,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:28:43 BoogieIcfgContainer [2021-11-25 19:28:43,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:28:43,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:28:43,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:28:43,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:28:43,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:28:39" (1/3) ... [2021-11-25 19:28:43,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf23e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:28:43, skipping insertion in model container [2021-11-25 19:28:43,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:28:40" (2/3) ... [2021-11-25 19:28:43,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf23e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:28:43, skipping insertion in model container [2021-11-25 19:28:43,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:28:43" (3/3) ... [2021-11-25 19:28:43,175 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_4-2a.c.cil.c [2021-11-25 19:28:43,181 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:28:43,181 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 19:28:43,232 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:28:43,239 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 [2021-11-25 19:28:43,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 19:28:43,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 19:28:43,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 19:28:43,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:28:43,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:28:43,263 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:28:43,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:28:43,269 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-25 19:28:43,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:28:43,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122160156] [2021-11-25 19:28:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:28:43,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:28:43,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:28:43,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:28:43,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:28:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:28:44,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:28:44,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:28:44,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:28:44,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:28:44,144 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:28:44,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122160156] [2021-11-25 19:28:44,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122160156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:28:44,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:28:44,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:28:44,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722957745] [2021-11-25 19:28:44,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:28:44,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:28:44,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:28:44,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:28:44,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:28:44,192 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:28:44,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:28:44,229 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-11-25 19:28:44,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:28:44,231 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 19:28:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:28:44,241 INFO L225 Difference]: With dead ends: 121 [2021-11-25 19:28:44,242 INFO L226 Difference]: Without dead ends: 56 [2021-11-25 19:28:44,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:28:44,250 INFO L933 BasicCegarLoop]: 81 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, 81 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 [2021-11-25 19:28:44,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:28:44,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-25 19:28:44,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-25 19:28:44,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-25 19:28:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-11-25 19:28:44,304 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-11-25 19:28:44,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:28:44,305 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-11-25 19:28:44,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:28:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-11-25 19:28:44,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 19:28:44,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:28:44,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:28:44,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:28:44,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:28:44,533 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:28:44,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:28:44,534 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-25 19:28:44,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:28:44,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243664266] [2021-11-25 19:28:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:28:44,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:28:44,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:28:44,537 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:28:44,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa353b6-9604-4669-a645-e648196cf391/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process