./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter_iir.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter_iir.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:46:52,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:46:52,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:46:52,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:46:52,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:46:52,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:46:52,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:46:52,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:46:52,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:46:52,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:46:52,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:46:52,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:46:52,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:46:52,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:46:52,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:46:52,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:46:52,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:46:52,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:46:52,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:46:52,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:46:52,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:46:52,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:46:52,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:46:52,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:46:52,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:46:52,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:46:52,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:46:52,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:46:52,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:46:52,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:46:52,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:46:52,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:46:52,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:46:52,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:46:52,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:46:52,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:46:52,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:46:52,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:46:52,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:46:52,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:46:52,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:46:52,720 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:46:52,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:46:52,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:46:52,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:46:52,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:46:52,751 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:46:52,751 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:46:52,751 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:46:52,751 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:46:52,752 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:46:52,752 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:46:52,752 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:46:52,753 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:46:52,757 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:46:52,757 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:46:52,758 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:46:52,758 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:46:52,758 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:46:52,758 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:46:52,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:46:52,759 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:46:52,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:46:52,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:46:52,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:46:52,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:46:52,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:46:52,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:46:52,761 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:46:52,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:46:52,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:46:52,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:46:52,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:46:52,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:46:52,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:46:52,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:46:52,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:46:52,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:46:52,764 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:46:52,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:46:52,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:46:52,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:46:52,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:46:52,765 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_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 [2021-11-21 01:46:53,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:46:53,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:46:53,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:46:53,112 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:46:53,112 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:46:53,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-21 01:46:53,187 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/data/16779fe8f/09b9b2c9d9b744919029bcf0ec9a089a/FLAGee350e9dd [2021-11-21 01:46:53,610 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:46:53,613 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-21 01:46:53,624 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/data/16779fe8f/09b9b2c9d9b744919029bcf0ec9a089a/FLAGee350e9dd [2021-11-21 01:46:53,976 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/data/16779fe8f/09b9b2c9d9b744919029bcf0ec9a089a [2021-11-21 01:46:53,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:46:53,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:46:53,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:53,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:46:53,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:46:54,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:53" (1/1) ... [2021-11-21 01:46:54,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e213654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:54, skipping insertion in model container [2021-11-21 01:46:54,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:53" (1/1) ... [2021-11-21 01:46:54,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:46:54,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:46:54,200 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_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-21 01:46:54,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:54,236 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:46:54,248 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_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-21 01:46:54,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:54,278 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:46:54,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:54 WrapperNode [2021-11-21 01:46:54,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:54,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:46:54,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:46:54,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:46:54,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:54" (1/1) ... [2021-11-21 01:46:54,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:54" (1/1) ... [2021-11-21 01:46:54,329 INFO L137 Inliner]: procedures = 18, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2021-11-21 01:46:54,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:46:54,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:46:54,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:46:54,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:46:54,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:54" (1/1) ... [2021-11-21 01:46:54,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:54" (1/1) ... [2021-11-21 01:46:54,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:54" (1/1) ... [2021-11-21 01:46:54,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:54" (1/1) ... [2021-11-21 01:46:54,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:54" (1/1) ... [2021-11-21 01:46:54,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:54" (1/1) ... [2021-11-21 01:46:54,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:54" (1/1) ... [2021-11-21 01:46:54,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:46:54,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:46:54,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:46:54,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:46:54,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:54" (1/1) ... [2021-11-21 01:46:54,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:46:54,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:54,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:46:54,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:46:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:46:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:46:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-21 01:46:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-21 01:46:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:46:54,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:46:54,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-21 01:46:54,622 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:46:54,629 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:46:54,846 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:46:54,971 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:46:54,971 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:46:54,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:54 BoogieIcfgContainer [2021-11-21 01:46:54,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:46:54,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:46:54,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:46:54,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:46:54,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:46:53" (1/3) ... [2021-11-21 01:46:54,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e261f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:54, skipping insertion in model container [2021-11-21 01:46:54,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:54" (2/3) ... [2021-11-21 01:46:54,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e261f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:54, skipping insertion in model container [2021-11-21 01:46:54,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:54" (3/3) ... [2021-11-21 01:46:54,987 INFO L111 eAbstractionObserver]: Analyzing ICFG filter_iir.c [2021-11-21 01:46:54,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:46:54,998 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:46:55,049 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:46:55,056 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:46:55,056 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:46:55,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2021-11-21 01:46:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:46:55,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:55,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:46:55,076 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:55,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:55,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2597808, now seen corresponding path program 1 times [2021-11-21 01:46:55,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:55,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292423310] [2021-11-21 01:46:55,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:55,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:46:55,352 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:46:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:46:55,492 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:46:55,494 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:46:55,496 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:46:55,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:46:55,503 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 01:46:55,506 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:46:55,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:46:55 BoogieIcfgContainer [2021-11-21 01:46:55,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:46:55,560 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:46:55,560 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:46:55,561 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:46:55,561 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:54" (3/4) ... [2021-11-21 01:46:55,566 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:46:55,567 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:46:55,570 INFO L158 Benchmark]: Toolchain (without parser) took 1586.58ms. Allocated memory was 111.1MB in the beginning and 151.0MB in the end (delta: 39.8MB). Free memory was 80.4MB in the beginning and 70.9MB in the end (delta: 9.5MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2021-11-21 01:46:55,570 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory is still 64.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:46:55,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.18ms. Allocated memory was 111.1MB in the beginning and 151.0MB in the end (delta: 39.8MB). Free memory was 80.0MB in the beginning and 124.2MB in the end (delta: -44.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:46:55,573 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.13ms. Allocated memory is still 151.0MB. Free memory was 124.2MB in the beginning and 122.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:46:55,578 INFO L158 Benchmark]: Boogie Preprocessor took 71.00ms. Allocated memory is still 151.0MB. Free memory was 122.0MB in the beginning and 120.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:46:55,579 INFO L158 Benchmark]: RCFGBuilder took 572.69ms. Allocated memory is still 151.0MB. Free memory was 120.6MB in the beginning and 100.5MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-21 01:46:55,581 INFO L158 Benchmark]: TraceAbstraction took 577.98ms. Allocated memory is still 151.0MB. Free memory was 99.6MB in the beginning and 71.1MB in the end (delta: 28.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-21 01:46:55,581 INFO L158 Benchmark]: Witness Printer took 6.82ms. Allocated memory is still 151.0MB. Free memory was 71.1MB in the beginning and 70.9MB in the end (delta: 221.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:46:55,591 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory is still 64.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.18ms. Allocated memory was 111.1MB in the beginning and 151.0MB in the end (delta: 39.8MB). Free memory was 80.0MB in the beginning and 124.2MB in the end (delta: -44.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.13ms. Allocated memory is still 151.0MB. Free memory was 124.2MB in the beginning and 122.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.00ms. Allocated memory is still 151.0MB. Free memory was 122.0MB in the beginning and 120.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 572.69ms. Allocated memory is still 151.0MB. Free memory was 120.6MB in the beginning and 100.5MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 577.98ms. Allocated memory is still 151.0MB. Free memory was 99.6MB in the beginning and 71.1MB in the end (delta: 28.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 6.82ms. Allocated memory is still 151.0MB. Free memory was 71.1MB in the beginning and 70.9MB in the end (delta: 221.7kB). 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: 13]: 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 50, overapproximation of to_real at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 28. Possible FailurePath: [L16] double A1[3] = { 1, 0.5179422053046, 1.0 }; [L17] double b1[2] = { 1.470767736573, 0.5522073405779 }; [L18] double A2[3] = { 1, 1.633101801841, 1.0 }; [L19] double b2[2] = { 1.742319554830, 0.820939679242 }; [L21] double D1[2], D2[2]; [L22] double P, X; [L43] D1[0] = 0. [L43] D1[1] = 0. [L44] D2[0] = 0. [L44] D2[1] = 0. [L45] P = 0. VAL [A1={4:0}, A2={6:0}, b1={5:0}, b2={7:0}, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}] [L47] COND TRUE 1 [L49] X = __VERIFIER_nondet_double() [L50] EXPR \read(X) [L50] EXPR X >= -10. && X <= 10. [L50] EXPR \read(X) [L50] EXPR X >= -10. && X <= 10. [L50] CALL assume_abort_if_not(X >= -10. && X <= 10.) [L11] COND FALSE !(!cond) [L50] RET assume_abort_if_not(X >= -10. && X <= 10.) [L52] CALL iir4(&X, &P) [L26] double x1, y1, t1, t2; [L28] EXPR \read(*x) [L28] x1 = 0.0117749388721091 * *x [L30] EXPR b1[0] [L30] EXPR D1[0] [L30] EXPR b1[1] [L30] EXPR D1[1] [L30] t1 = x1 + b1[0]*D1[0] - b1[1]*D1[1] [L31] EXPR A1[0] [L31] EXPR A1[1] [L31] EXPR D1[0] [L31] EXPR A1[2] [L31] EXPR D1[1] [L31] y1 = A1[0]*t1 - A1[1]*D1[0] + A1[2]*D1[1] [L32] EXPR D1[0] [L32] D1[1] = D1[0] [L33] D1[0] = t1 [L35] EXPR b2[0] [L35] EXPR D2[0] [L35] EXPR b2[1] [L35] EXPR D2[1] [L35] t2 = y1 + b2[0]*D2[0] - b2[1]*D2[1] [L36] EXPR A2[0] [L36] EXPR A2[1] [L36] EXPR D2[0] [L36] EXPR A2[2] [L36] EXPR D2[1] [L36] *y = A2[0]*t2 - A2[1]*D2[0] + A2[2]*D2[1] [L37] EXPR D2[0] [L37] D2[1] = D2[0] [L38] D2[0] = t2 [L52] RET iir4(&X, &P) [L54] EXPR \read(P) [L54] EXPR P >= -1e30 && P <= 1e30 [L54] EXPR \read(P) [L54] EXPR P >= -1e30 && P <= 1e30 [L54] CALL __VERIFIER_assert(P >= -1e30 && P <= 1e30) [L13] COND TRUE !(cond) VAL [\old(cond)=0, A1={4:0}, A2={6:0}, b1={5:0}, b2={7:0}, cond=0, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}] [L13] reach_error() VAL [\old(cond)=0, A1={4:0}, A2={6:0}, b1={5:0}, b2={7:0}, cond=0, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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=7occurred 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, 0.2s 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 [2021-11-21 01:46:55,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/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_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter_iir.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:46:58,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:46:58,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:46:58,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:46:58,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:46:58,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:46:58,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:46:58,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:46:58,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:46:58,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:46:58,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:46:58,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:46:58,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:46:58,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:46:58,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:46:58,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:46:58,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:46:58,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:46:58,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:46:58,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:46:58,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:46:58,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:46:58,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:46:58,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:46:58,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:46:58,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:46:58,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:46:58,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:46:58,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:46:58,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:46:58,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:46:58,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:46:58,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:46:58,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:46:58,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:46:58,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:46:58,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:46:58,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:46:58,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:46:58,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:46:58,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:46:58,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:46:58,231 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:46:58,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:46:58,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:46:58,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:46:58,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:46:58,234 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:46:58,234 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:46:58,234 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:46:58,235 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:46:58,235 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:46:58,236 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:46:58,236 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:46:58,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:46:58,238 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:46:58,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:46:58,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:46:58,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:46:58,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:46:58,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:46:58,239 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:46:58,239 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:46:58,239 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:46:58,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:46:58,240 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:46:58,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:46:58,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:46:58,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:46:58,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:46:58,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:46:58,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:46:58,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:46:58,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:46:58,242 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:46:58,242 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:46:58,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:46:58,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:46:58,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:46:58,243 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_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 [2021-11-21 01:46:58,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:46:58,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:46:58,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:46:58,687 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:46:58,689 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:46:58,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-21 01:46:58,765 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/data/aa4e4115d/f63d8ffd2abb404894b3bf23424333af/FLAG3b8fcf72f [2021-11-21 01:46:59,332 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:46:59,334 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-21 01:46:59,339 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/data/aa4e4115d/f63d8ffd2abb404894b3bf23424333af/FLAG3b8fcf72f [2021-11-21 01:46:59,776 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/data/aa4e4115d/f63d8ffd2abb404894b3bf23424333af [2021-11-21 01:46:59,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:46:59,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:46:59,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:59,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:46:59,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:46:59,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:59" (1/1) ... [2021-11-21 01:46:59,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70583934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:59, skipping insertion in model container [2021-11-21 01:46:59,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:59" (1/1) ... [2021-11-21 01:46:59,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:46:59,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:46:59,975 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_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-21 01:47:00,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:47:00,060 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:47:00,074 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_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-21 01:47:00,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:47:00,114 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:47:00,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:00 WrapperNode [2021-11-21 01:47:00,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:47:00,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:47:00,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:47:00,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:47:00,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:00" (1/1) ... [2021-11-21 01:47:00,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:00" (1/1) ... [2021-11-21 01:47:00,165 INFO L137 Inliner]: procedures = 19, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 141 [2021-11-21 01:47:00,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:47:00,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:47:00,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:47:00,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:47:00,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:00" (1/1) ... [2021-11-21 01:47:00,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:00" (1/1) ... [2021-11-21 01:47:00,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:00" (1/1) ... [2021-11-21 01:47:00,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:00" (1/1) ... [2021-11-21 01:47:00,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:00" (1/1) ... [2021-11-21 01:47:00,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:00" (1/1) ... [2021-11-21 01:47:00,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:00" (1/1) ... [2021-11-21 01:47:00,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:47:00,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:47:00,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:47:00,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:47:00,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:00" (1/1) ... [2021-11-21 01:47:00,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:47:00,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:47:00,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:47:00,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:47:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:47:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-21 01:47:00,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-21 01:47:00,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:47:00,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-11-21 01:47:00,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:47:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:47:00,389 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:47:00,391 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:47:03,313 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:47:03,318 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:47:03,318 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:47:03,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:47:03 BoogieIcfgContainer [2021-11-21 01:47:03,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:47:03,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:47:03,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:47:03,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:47:03,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:46:59" (1/3) ... [2021-11-21 01:47:03,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30041c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:47:03, skipping insertion in model container [2021-11-21 01:47:03,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:00" (2/3) ... [2021-11-21 01:47:03,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30041c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:47:03, skipping insertion in model container [2021-11-21 01:47:03,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:47:03" (3/3) ... [2021-11-21 01:47:03,328 INFO L111 eAbstractionObserver]: Analyzing ICFG filter_iir.c [2021-11-21 01:47:03,333 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:47:03,333 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:47:03,377 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:47:03,383 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:47:03,384 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:47:03,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:47:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:47:03,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:03,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:03,430 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:47:03,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:03,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1398280527, now seen corresponding path program 1 times [2021-11-21 01:47:03,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:03,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102456052] [2021-11-21 01:47:03,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:03,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:03,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:03,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:03,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:47:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:06,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:47:06,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:06,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:06,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:06,911 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:06,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102456052] [2021-11-21 01:47:06,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102456052] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:06,912 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:06,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:47:06,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107817648] [2021-11-21 01:47:06,914 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:06,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:47:06,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:06,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:47:06,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:47:06,957 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:47:06,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:06,972 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2021-11-21 01:47:06,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:47:06,974 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-21 01:47:06,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:06,981 INFO L225 Difference]: With dead ends: 30 [2021-11-21 01:47:06,982 INFO L226 Difference]: Without dead ends: 14 [2021-11-21 01:47:06,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:47:06,989 INFO L933 BasicCegarLoop]: 16 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, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:06,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:47:07,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-21 01:47:07,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-21 01:47:07,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:47:07,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-21 01:47:07,026 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-11-21 01:47:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:07,027 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-21 01:47:07,027 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), 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) [2021-11-21 01:47:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-21 01:47:07,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:47:07,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:07,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:07,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-21 01:47:07,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:07,238 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:47:07,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:07,239 INFO L85 PathProgramCache]: Analyzing trace with hash 376726835, now seen corresponding path program 1 times [2021-11-21 01:47:07,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:07,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242993416] [2021-11-21 01:47:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:07,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:07,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:07,245 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:07,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:47:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:10,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:47:10,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:10,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:47:10,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:47:10,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:47:10,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242993416] [2021-11-21 01:47:10,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242993416] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:10,831 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:10,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:47:10,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635709006] [2021-11-21 01:47:10,832 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:10,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:47:10,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:47:10,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:47:10,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:47:10,835 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:47:13,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:13,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:13,957 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-11-21 01:47:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:47:14,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-21 01:47:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:14,384 INFO L225 Difference]: With dead ends: 28 [2021-11-21 01:47:14,384 INFO L226 Difference]: Without dead ends: 14 [2021-11-21 01:47:14,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:14,386 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:14,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 39 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2021-11-21 01:47:14,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-21 01:47:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-21 01:47:14,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2021-11-21 01:47:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-21 01:47:14,390 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2021-11-21 01:47:14,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:14,390 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-21 01:47:14,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:47:14,391 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-21 01:47:14,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:47:14,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:14,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:14,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:47:14,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:47:14,613 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:47:14,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:14,614 INFO L85 PathProgramCache]: Analyzing trace with hash -303331535, now seen corresponding path program 1 times [2021-11-21 01:47:14,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:47:14,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182610702] [2021-11-21 01:47:14,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:14,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:47:14,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:47:14,617 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:47:14,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e915aa-0ca0-4e9f-a830-7456c9cec1ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:47:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:24,471 WARN L261 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-21 01:47:24,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:47:27,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:27,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:27,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:27,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:27,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:27,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:27,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:27,719 INFO L244 Elim1Store]: Index analysis took 124 ms [2021-11-21 01:47:28,407 INFO L354 Elim1Store]: treesize reduction 459, result has 5.9 percent of original size [2021-11-21 01:47:28,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 29 case distinctions, treesize of input 483 treesize of output 445 [2021-11-21 01:47:34,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:34,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:34,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:34,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:34,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:34,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:34,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:34,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:34,231 INFO L244 Elim1Store]: Index analysis took 110 ms [2021-11-21 01:47:34,264 INFO L354 Elim1Store]: treesize reduction 362, result has 0.3 percent of original size [2021-11-21 01:47:34,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 26 select indices, 26 select index equivalence classes, 36 disjoint index pairs (out of 325 index pairs), introduced 26 new quantified variables, introduced 32 case distinctions, treesize of input 415 treesize of output 493 [2021-11-21 01:47:41,799 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:47:49,387 WARN L227 SmtUtils]: Spent 5.45s on a formula simplification that was a NOOP. DAG size: 309 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:47:57,213 WARN L227 SmtUtils]: Spent 5.39s on a formula simplification that was a NOOP. DAG size: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:48:04,509 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 303 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:48:04,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:15,333 WARN L227 SmtUtils]: Spent 1.17m on a formula simplification. DAG size of input: 276 DAG size of output: 20 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:49:15,333 INFO L354 Elim1Store]: treesize reduction 709, result has 3.9 percent of original size [2021-11-21 01:49:15,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 32 select indices, 32 select index equivalence classes, 34 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 54 case distinctions, treesize of input 1518 treesize of output 864 [2021-11-21 01:56:35,253 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_~#P~0.base| (_ bv10 32)) (= |c_~#P~0.offset| (_ bv0 32)) (exists ((|~#D2~0.offset| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_12| (_ BitVec 64)) (v_skolemized_v_prenex_22_3 (_ BitVec 64))) (let ((.cse0 (select |c_#memory_int| (_ bv9 32)))) (and (= (select .cse0 |~#D2~0.offset|) ((_ extract 31 0) v_skolemized_v_prenex_22_3)) (= (select .cse0 (bvadd (_ bv4 32) |~#D2~0.offset|)) ((_ extract 63 32) v_skolemized_v_prenex_22_3)) (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_12|) (select .cse0 (bvadd |~#D2~0.offset| (_ bv12 32)))) (= ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_12|) (select .cse0 (bvadd (_ bv8 32) |~#D2~0.offset|)))))) (exists ((v_skolemized_v_prenex_20_3 (_ BitVec 64))) (let ((.cse1 (select |c_#memory_int| (_ bv8 32)))) (and (= ((_ extract 63 32) v_skolemized_v_prenex_20_3) (select .cse1 (_ bv4 32))) (= ((_ extract 31 0) v_skolemized_v_prenex_20_3) (select .cse1 (_ bv0 32)))))) (exists ((v_skolemized_v_prenex_21_3 (_ BitVec 64))) (let ((.cse2 (select |c_#memory_int| (_ bv8 32)))) (and (= ((_ extract 63 32) v_skolemized_v_prenex_21_3) (select .cse2 (_ bv12 32))) (= ((_ extract 31 0) v_skolemized_v_prenex_21_3) (select .cse2 (_ bv8 32)))))) (exists ((|~#A2~0.offset| (_ BitVec 32)) (|~#b2~0.offset| (_ BitVec 32)) (|~#A1~0.offset| (_ BitVec 32)) (v_skolemized_v_prenex_12_3 (_ BitVec 64)) (v_skolemized_v_prenex_23_3 (_ BitVec 64)) (v_skolemized_v_prenex_5_3 (_ BitVec 64)) (v_skolemized_v_prenex_14_3 (_ BitVec 64)) (|~#b1~0.offset| (_ BitVec 32)) (v_skolemized_v_prenex_6_3 (_ BitVec 64)) (v_skolemized_v_prenex_7_3 (_ BitVec 64)) (v_skolemized_v_prenex_9_3 (_ BitVec 64)) (v_skolemized_v_prenex_10_3 (_ BitVec 64)) (v_skolemized_v_prenex_11_3 (_ BitVec 64)) (|v_skolemized_q#valueAsBitvector_9| (_ BitVec 64)) (|v_skolemized_q#valueAsBitvector_10| (_ BitVec 64)) (v_skolemized_v_prenex_17_3 (_ BitVec 64)) (|v_skolemized_q#valueAsBitvector_11| (_ BitVec 64)) (v_skolemized_v_prenex_19_3 (_ BitVec 64)) (v_skolemized_v_prenex_1_3 (_ BitVec 64)) (v_skolemized_v_prenex_18_3 (_ BitVec 64))) (let ((.cse6 (select |c_#memory_int| (_ bv7 32))) (.cse47 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_11|)) (.cse14 ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_11|)) (.cse10 (select |c_#memory_int| (_ bv6 32))) (.cse25 (select |c_#memory_int| (_ bv5 32))) (.cse31 (select |c_#memory_int| (_ bv4 32)))) (let ((.cse7 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse9 ((_ extract 63 32) v_skolemized_v_prenex_1_3)) (.cse11 (select .cse31 (bvadd (_ bv4 32) |~#A1~0.offset|))) (.cse13 (select .cse25 (bvadd |~#b1~0.offset| (_ bv12 32)))) (.cse12 (select .cse31 (bvadd |~#A1~0.offset| (_ bv12 32)))) (.cse16 (select .cse31 (bvadd (_ bv16 32) |~#A1~0.offset|))) (.cse5 ((_ extract 63 32) v_skolemized_v_prenex_11_3)) (.cse17 ((_ extract 63 32) v_skolemized_v_prenex_5_3)) (.cse8 (select .cse10 (bvadd (_ bv16 32) |~#A2~0.offset|))) (.cse45 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_9|)) (.cse15 (select |c_#memory_int| (_ bv11 32))) (.cse40 ((_ extract 31 0) v_skolemized_v_prenex_11_3)) (.cse28 (select .cse25 (bvadd (_ bv8 32) |~#b1~0.offset|))) (.cse20 (select .cse10 |~#A2~0.offset|)) (.cse48 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse18 (select |c_#memory_int| |c_~#P~0.base|)) (.cse3 (let ((.cse49 (concat .cse47 .cse14))) (fp ((_ extract 63 63) .cse49) ((_ extract 62 52) .cse49) ((_ extract 51 0) .cse49)))) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (.cse24 ((_ extract 63 32) v_skolemized_v_prenex_12_3)) (.cse34 (select .cse31 (bvadd |~#A1~0.offset| (_ bv20 32)))) (.cse22 (select .cse31 |~#A1~0.offset|)) (.cse37 (select .cse6 (bvadd (_ bv4 32) |~#b2~0.offset|)))) (and (= (fp ((_ extract 63 63) v_skolemized_v_prenex_11_3) ((_ extract 62 52) v_skolemized_v_prenex_11_3) ((_ extract 51 0) v_skolemized_v_prenex_11_3)) ((_ to_fp 11 53) c_currentRoundingMode (/ 410469839621.0 500000000000.0))) (fp.leq .cse3 .cse4) (= .cse5 (select .cse6 (bvadd |~#b2~0.offset| (_ bv12 32)))) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_1_3) ((_ extract 62 52) v_skolemized_v_prenex_1_3) ((_ extract 51 0) v_skolemized_v_prenex_1_3)) .cse7) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_7_3) ((_ extract 62 52) v_skolemized_v_prenex_7_3) ((_ extract 51 0) v_skolemized_v_prenex_7_3)) ((_ to_fp 11 53) c_currentRoundingMode (/ 5522073405779.0 10000000000000.0))) (= ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_9|) .cse8) (= .cse9 (select .cse10 (bvadd (_ bv4 32) |~#A2~0.offset|))) (= ((_ extract 63 32) v_skolemized_v_prenex_10_3) .cse11) (= ((_ extract 63 32) v_skolemized_v_prenex_6_3) .cse12) (= .cse13 ((_ extract 63 32) v_skolemized_v_prenex_7_3)) (= .cse14 (select .cse15 (_ bv0 32))) (= .cse16 ((_ extract 31 0) v_skolemized_v_prenex_9_3)) (= (select .cse10 (bvadd |~#A2~0.offset| (_ bv12 32))) .cse17) (= ((_ extract 63 32) v_skolemized_v_prenex_23_3) (select .cse18 (bvadd |c_~#P~0.offset| (_ bv4 32)))) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_10_3) ((_ extract 62 52) v_skolemized_v_prenex_10_3) ((_ extract 51 0) v_skolemized_v_prenex_10_3)) .cse7) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_23_3) ((_ extract 62 52) v_skolemized_v_prenex_23_3) ((_ extract 51 0) v_skolemized_v_prenex_23_3)) (let ((.cse41 (let ((.cse46 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_10|) ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_10|)))) (fp ((_ extract 63 63) .cse46) ((_ extract 62 52) .cse46) ((_ extract 51 0) .cse46))))) (fp.add c_currentRoundingMode (let ((.cse38 (let ((.cse43 (concat ((_ extract 63 32) v_skolemized_v_prenex_19_3) ((_ extract 31 0) v_skolemized_v_prenex_19_3)))) (fp ((_ extract 63 63) .cse43) ((_ extract 62 52) .cse43) ((_ extract 51 0) .cse43))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode (let ((.cse19 (concat .cse9 .cse20))) (fp ((_ extract 63 63) .cse19) ((_ extract 62 52) .cse19) ((_ extract 51 0) .cse19))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (let ((.cse29 (let ((.cse35 (concat ((_ extract 63 32) v_skolemized_v_prenex_17_3) ((_ extract 31 0) v_skolemized_v_prenex_17_3)))) (fp ((_ extract 63 63) .cse35) ((_ extract 62 52) .cse35) ((_ extract 51 0) .cse35))))) (fp.add c_currentRoundingMode (let ((.cse26 (let ((.cse32 (concat ((_ extract 63 32) v_skolemized_v_prenex_18_3) ((_ extract 31 0) v_skolemized_v_prenex_18_3)))) (fp ((_ extract 63 63) .cse32) ((_ extract 62 52) .cse32) ((_ extract 51 0) .cse32))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode (let ((.cse21 (concat .cse11 .cse22))) (fp ((_ extract 63 63) .cse21) ((_ extract 62 52) .cse21) ((_ extract 51 0) .cse21))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 117749388721091.0 10000000000000000.0)) .cse3) (fp.mul c_currentRoundingMode (let ((.cse23 (concat .cse24 (select .cse25 |~#b1~0.offset|)))) (fp ((_ extract 63 63) .cse23) ((_ extract 62 52) .cse23) ((_ extract 51 0) .cse23))) .cse26)) (fp.mul c_currentRoundingMode (let ((.cse27 (concat .cse13 .cse28))) (fp ((_ extract 63 63) .cse27) ((_ extract 62 52) .cse27) ((_ extract 51 0) .cse27))) .cse29))) (fp.mul c_currentRoundingMode (let ((.cse30 (concat .cse12 (select .cse31 (bvadd (_ bv8 32) |~#A1~0.offset|))))) (fp ((_ extract 63 63) .cse30) ((_ extract 62 52) .cse30) ((_ extract 51 0) .cse30))) .cse26))) (fp.mul c_currentRoundingMode (let ((.cse33 (concat .cse34 .cse16))) (fp ((_ extract 63 63) .cse33) ((_ extract 62 52) .cse33) ((_ extract 51 0) .cse33))) .cse29))) (fp.mul c_currentRoundingMode (let ((.cse36 (concat .cse37 (select .cse6 |~#b2~0.offset|)))) (fp ((_ extract 63 63) .cse36) ((_ extract 62 52) .cse36) ((_ extract 51 0) .cse36))) .cse38)) (fp.mul c_currentRoundingMode (let ((.cse39 (concat .cse5 .cse40))) (fp ((_ extract 63 63) .cse39) ((_ extract 62 52) .cse39) ((_ extract 51 0) .cse39))) .cse41))) (fp.mul c_currentRoundingMode (let ((.cse42 (concat .cse17 (select .cse10 (bvadd (_ bv8 32) |~#A2~0.offset|))))) (fp ((_ extract 63 63) .cse42) ((_ extract 62 52) .cse42) ((_ extract 51 0) .cse42))) .cse38))) (fp.mul c_currentRoundingMode (let ((.cse44 (concat .cse45 .cse8))) (fp ((_ extract 63 63) .cse44) ((_ extract 62 52) .cse44) ((_ extract 51 0) .cse44))) .cse41)))) (= (_ +zero 11 53) (fp ((_ extract 63 63) v_skolemized_v_prenex_18_3) ((_ extract 62 52) v_skolemized_v_prenex_18_3) ((_ extract 51 0) v_skolemized_v_prenex_18_3))) (= .cse45 (select .cse10 (bvadd |~#A2~0.offset| (_ bv20 32)))) (= (select .cse15 (_ bv4 32)) .cse47) (= (select .cse6 (bvadd (_ bv8 32) |~#b2~0.offset|)) .cse40) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_9|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_9|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_9|)) .cse48) (= (_ +zero 11 53) (fp ((_ extract 63 63) v_skolemized_v_prenex_17_3) ((_ extract 62 52) v_skolemized_v_prenex_17_3) ((_ extract 51 0) v_skolemized_v_prenex_17_3))) (= (_ +zero 11 53) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_10|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_10|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_10|))) (= .cse28 ((_ extract 31 0) v_skolemized_v_prenex_7_3)) (= .cse20 ((_ extract 31 0) v_skolemized_v_prenex_1_3)) (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1470767736573.0 1000000000000.0)) (fp ((_ extract 63 63) v_skolemized_v_prenex_12_3) ((_ extract 62 52) v_skolemized_v_prenex_12_3) ((_ extract 51 0) v_skolemized_v_prenex_12_3))) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_14_3) ((_ extract 62 52) v_skolemized_v_prenex_14_3) ((_ extract 51 0) v_skolemized_v_prenex_14_3)) ((_ to_fp 11 53) c_currentRoundingMode (/ 174231955483.0 100000000000.0))) (= ((_ to_fp 11 53) c_currentRoundingMode (/ 2589711026523.0 5000000000000.0)) (fp ((_ extract 63 63) v_skolemized_v_prenex_6_3) ((_ extract 62 52) v_skolemized_v_prenex_6_3) ((_ extract 51 0) v_skolemized_v_prenex_6_3))) (= .cse48 (fp ((_ extract 63 63) v_skolemized_v_prenex_9_3) ((_ extract 62 52) v_skolemized_v_prenex_9_3) ((_ extract 51 0) v_skolemized_v_prenex_9_3))) (= (select .cse18 |c_~#P~0.offset|) ((_ extract 31 0) v_skolemized_v_prenex_23_3)) (fp.geq .cse3 (fp.neg .cse4)) (= .cse24 (select .cse25 (bvadd (_ bv4 32) |~#b1~0.offset|))) (= (_ +zero 11 53) (fp ((_ extract 63 63) v_skolemized_v_prenex_19_3) ((_ extract 62 52) v_skolemized_v_prenex_19_3) ((_ extract 51 0) v_skolemized_v_prenex_19_3))) (= ((_ extract 63 32) v_skolemized_v_prenex_9_3) .cse34) (= ((_ extract 31 0) v_skolemized_v_prenex_10_3) .cse22) (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1633101801841.0 1000000000000.0)) (fp ((_ extract 63 63) v_skolemized_v_prenex_5_3) ((_ extract 62 52) v_skolemized_v_prenex_5_3) ((_ extract 51 0) v_skolemized_v_prenex_5_3))) (= ((_ extract 63 32) v_skolemized_v_prenex_14_3) .cse37))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 01:56:36,217 INFO L354 Elim1Store]: treesize reduction 538, result has 0.2 percent of original size [2021-11-21 01:56:36,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 32 select indices, 32 select index equivalence classes, 33 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 48 case distinctions, treesize of input 1139 treesize of output 717