./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter_iir.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:20:03,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:20:03,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:20:03,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:20:03,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:20:03,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:20:03,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:20:03,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:20:03,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:20:03,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:20:03,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:20:03,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:20:03,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:20:03,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:20:03,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:20:03,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:20:03,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:20:03,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:20:03,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:20:03,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:20:03,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:20:03,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:20:03,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:20:03,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:20:03,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:20:03,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:20:03,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:20:03,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:20:03,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:20:03,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:20:03,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:20:03,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:20:03,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:20:03,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:20:03,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:20:03,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:20:03,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:20:03,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:20:03,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:20:03,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:20:03,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:20:03,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:20:03,255 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:20:03,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:20:03,256 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:20:03,257 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:20:03,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:20:03,258 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:20:03,258 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:20:03,258 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:20:03,258 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:20:03,259 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:20:03,260 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:20:03,260 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:20:03,260 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:20:03,260 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:20:03,260 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:20:03,261 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:20:03,261 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:20:03,261 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:20:03,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:20:03,262 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:20:03,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:20:03,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:20:03,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:20:03,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:20:03,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:20:03,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:20:03,263 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:20:03,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:20:03,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:20:03,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:20:03,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:20:03,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:20:03,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:20:03,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:20:03,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:20:03,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:20:03,266 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:20:03,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:20:03,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:20:03,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:20:03,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:20:03,267 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_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 [2021-11-23 03:20:03,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:20:03,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:20:03,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:20:03,598 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:20:03,599 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:20:03,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-23 03:20:03,691 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/data/f5beae77a/7cd496193bf04399b17c8dcea300872a/FLAG93f47c5c2 [2021-11-23 03:20:04,145 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:20:04,146 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-23 03:20:04,154 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/data/f5beae77a/7cd496193bf04399b17c8dcea300872a/FLAG93f47c5c2 [2021-11-23 03:20:04,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/data/f5beae77a/7cd496193bf04399b17c8dcea300872a [2021-11-23 03:20:04,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:20:04,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:20:04,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:20:04,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:20:04,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:20:04,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:04" (1/1) ... [2021-11-23 03:20:04,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377fcc40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:04, skipping insertion in model container [2021-11-23 03:20:04,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:04" (1/1) ... [2021-11-23 03:20:04,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:20:04,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:20:04,753 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_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-23 03:20:04,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:20:04,828 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:20:04,843 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_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-23 03:20:04,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:20:04,905 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:20:04,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:04 WrapperNode [2021-11-23 03:20:04,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:20:04,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:20:04,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:20:04,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:20:04,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:04" (1/1) ... [2021-11-23 03:20:04,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:04" (1/1) ... [2021-11-23 03:20:04,978 INFO L137 Inliner]: procedures = 18, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2021-11-23 03:20:04,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:20:04,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:20:04,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:20:04,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:20:04,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:04" (1/1) ... [2021-11-23 03:20:04,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:04" (1/1) ... [2021-11-23 03:20:05,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:04" (1/1) ... [2021-11-23 03:20:05,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:04" (1/1) ... [2021-11-23 03:20:05,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:04" (1/1) ... [2021-11-23 03:20:05,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:04" (1/1) ... [2021-11-23 03:20:05,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:04" (1/1) ... [2021-11-23 03:20:05,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:20:05,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:20:05,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:20:05,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:20:05,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:04" (1/1) ... [2021-11-23 03:20:05,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:20:05,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:20:05,093 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:20:05,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:20:05,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:20:05,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:20:05,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-23 03:20:05,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-23 03:20:05,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:20:05,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:20:05,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-23 03:20:05,228 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:20:05,230 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:20:05,488 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:20:05,596 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:20:05,596 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:20:05,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:05 BoogieIcfgContainer [2021-11-23 03:20:05,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:20:05,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:20:05,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:20:05,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:20:05,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:20:04" (1/3) ... [2021-11-23 03:20:05,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c4ecc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:05, skipping insertion in model container [2021-11-23 03:20:05,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:04" (2/3) ... [2021-11-23 03:20:05,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c4ecc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:05, skipping insertion in model container [2021-11-23 03:20:05,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:05" (3/3) ... [2021-11-23 03:20:05,609 INFO L111 eAbstractionObserver]: Analyzing ICFG filter_iir.c [2021-11-23 03:20:05,615 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:20:05,631 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:20:05,711 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:20:05,726 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:20:05,727 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:20:05,756 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) [2021-11-23 03:20:05,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 03:20:05,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:05,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 03:20:05,764 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:20:05,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:05,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2597808, now seen corresponding path program 1 times [2021-11-23 03:20:05,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:20:05,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103337210] [2021-11-23 03:20:05,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:05,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:20:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:20:06,121 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:20:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:20:06,262 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 03:20:06,264 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:20:06,265 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:20:06,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:20:06,273 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 03:20:06,276 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:20:06,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:20:06 BoogieIcfgContainer [2021-11-23 03:20:06,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:20:06,311 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:20:06,311 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:20:06,312 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:20:06,312 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:05" (3/4) ... [2021-11-23 03:20:06,316 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 03:20:06,316 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:20:06,317 INFO L158 Benchmark]: Toolchain (without parser) took 1789.54ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 85.4MB in the end (delta: -3.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:20:06,318 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 97.9MB in the beginning and 97.8MB in the end (delta: 79.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:20:06,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.11ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 92.7MB in the end (delta: -11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 03:20:06,319 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.95ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 90.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:20:06,320 INFO L158 Benchmark]: Boogie Preprocessor took 64.71ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 88.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:20:06,321 INFO L158 Benchmark]: RCFGBuilder took 552.15ms. Allocated memory is still 117.4MB. Free memory was 88.9MB in the beginning and 69.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-23 03:20:06,321 INFO L158 Benchmark]: TraceAbstraction took 709.17ms. Allocated memory is still 117.4MB. Free memory was 68.6MB in the beginning and 86.0MB in the end (delta: -17.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:20:06,322 INFO L158 Benchmark]: Witness Printer took 5.02ms. Allocated memory is still 117.4MB. Free memory was 86.0MB in the beginning and 85.4MB in the end (delta: 609.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:20:06,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 97.9MB in the beginning and 97.8MB in the end (delta: 79.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.11ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 92.7MB in the end (delta: -11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.95ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 90.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.71ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 88.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 552.15ms. Allocated memory is still 117.4MB. Free memory was 88.9MB in the beginning and 69.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 709.17ms. Allocated memory is still 117.4MB. Free memory was 68.6MB in the beginning and 86.0MB in the end (delta: -17.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.02ms. Allocated memory is still 117.4MB. Free memory was 86.0MB in the beginning and 85.4MB in the end (delta: 609.5kB). Peak memory consumption was 2.1MB. 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: 0.6s, 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 [2021-11-23 03:20:06,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter_iir.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:20:08,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:20:08,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:20:08,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:20:08,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:20:08,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:20:08,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:20:08,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:20:08,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:20:08,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:20:08,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:20:08,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:20:08,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:20:08,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:20:08,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:20:09,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:20:09,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:20:09,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:20:09,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:20:09,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:20:09,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:20:09,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:20:09,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:20:09,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:20:09,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:20:09,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:20:09,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:20:09,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:20:09,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:20:09,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:20:09,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:20:09,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:20:09,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:20:09,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:20:09,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:20:09,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:20:09,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:20:09,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:20:09,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:20:09,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:20:09,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:20:09,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 03:20:09,096 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:20:09,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:20:09,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:20:09,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:20:09,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:20:09,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:20:09,099 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:20:09,099 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:20:09,099 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:20:09,100 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:20:09,101 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:20:09,101 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:20:09,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:20:09,103 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:20:09,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:20:09,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:20:09,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:20:09,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:20:09,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:20:09,104 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:20:09,104 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:20:09,105 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:20:09,105 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:20:09,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:20:09,105 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:20:09,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:20:09,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:20:09,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:20:09,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:20:09,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:20:09,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:20:09,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:20:09,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:20:09,108 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:20:09,108 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:20:09,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:20:09,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:20:09,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:20:09,109 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_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 [2021-11-23 03:20:09,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:20:09,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:20:09,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:20:09,509 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:20:09,513 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:20:09,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-23 03:20:09,597 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/data/d8e5d7c50/88036a548af349e9bb64cf14b3810b6c/FLAG380fca2dc [2021-11-23 03:20:10,209 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:20:10,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-23 03:20:10,218 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/data/d8e5d7c50/88036a548af349e9bb64cf14b3810b6c/FLAG380fca2dc [2021-11-23 03:20:10,556 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/data/d8e5d7c50/88036a548af349e9bb64cf14b3810b6c [2021-11-23 03:20:10,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:20:10,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:20:10,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:20:10,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:20:10,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:20:10,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:10" (1/1) ... [2021-11-23 03:20:10,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d3bc2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:10, skipping insertion in model container [2021-11-23 03:20:10,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:10" (1/1) ... [2021-11-23 03:20:10,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:20:10,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:20:10,760 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_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-23 03:20:10,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:20:10,810 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:20:10,826 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_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-23 03:20:10,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:20:10,897 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:20:10,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:10 WrapperNode [2021-11-23 03:20:10,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:20:10,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:20:10,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:20:10,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:20:10,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:10" (1/1) ... [2021-11-23 03:20:10,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:10" (1/1) ... [2021-11-23 03:20:10,967 INFO L137 Inliner]: procedures = 19, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 141 [2021-11-23 03:20:10,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:20:10,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:20:10,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:20:10,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:20:10,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:10" (1/1) ... [2021-11-23 03:20:10,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:10" (1/1) ... [2021-11-23 03:20:11,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:10" (1/1) ... [2021-11-23 03:20:11,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:10" (1/1) ... [2021-11-23 03:20:11,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:10" (1/1) ... [2021-11-23 03:20:11,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:10" (1/1) ... [2021-11-23 03:20:11,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:10" (1/1) ... [2021-11-23 03:20:11,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:20:11,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:20:11,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:20:11,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:20:11,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:10" (1/1) ... [2021-11-23 03:20:11,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:20:11,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:20:11,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:20:11,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:20:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:20:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-23 03:20:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-23 03:20:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 03:20:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-11-23 03:20:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:20:11,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:20:11,297 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:20:11,299 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:20:14,271 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:20:14,278 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:20:14,278 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:20:14,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:14 BoogieIcfgContainer [2021-11-23 03:20:14,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:20:14,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:20:14,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:20:14,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:20:14,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:20:10" (1/3) ... [2021-11-23 03:20:14,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf2ec9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:14, skipping insertion in model container [2021-11-23 03:20:14,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:10" (2/3) ... [2021-11-23 03:20:14,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf2ec9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:14, skipping insertion in model container [2021-11-23 03:20:14,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:14" (3/3) ... [2021-11-23 03:20:14,295 INFO L111 eAbstractionObserver]: Analyzing ICFG filter_iir.c [2021-11-23 03:20:14,303 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:20:14,303 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:20:14,399 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:20:14,416 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:20:14,416 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:20:14,434 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) [2021-11-23 03:20:14,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:20:14,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:14,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:20:14,442 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:20:14,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:14,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1398280527, now seen corresponding path program 1 times [2021-11-23 03:20:14,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:20:14,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59191409] [2021-11-23 03:20:14,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:14,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:20:14,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:20:14,483 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:20:14,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:20:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:18,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 03:20:18,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:18,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:18,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:20:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:18,885 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:20:18,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59191409] [2021-11-23 03:20:18,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59191409] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:20:18,886 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:20:18,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:20:18,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478141679] [2021-11-23 03:20:18,889 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:20:18,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:20:18,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:20:18,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:20:18,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:20:18,923 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) [2021-11-23 03:20:18,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:18,943 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2021-11-23 03:20:18,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:20:18,945 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 [2021-11-23 03:20:18,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:18,966 INFO L225 Difference]: With dead ends: 30 [2021-11-23 03:20:18,966 INFO L226 Difference]: Without dead ends: 14 [2021-11-23 03:20:18,969 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 [2021-11-23 03:20:18,974 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 [2021-11-23 03:20:18,976 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] [2021-11-23 03:20:18,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-23 03:20:19,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-23 03:20:19,006 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) [2021-11-23 03:20:19,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-23 03:20:19,009 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-11-23 03:20:19,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:19,010 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-23 03:20:19,010 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) [2021-11-23 03:20:19,010 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-23 03:20:19,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:20:19,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:19,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:20:19,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:20:19,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:20:19,235 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:20:19,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:19,236 INFO L85 PathProgramCache]: Analyzing trace with hash 376726835, now seen corresponding path program 1 times [2021-11-23 03:20:19,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:20:19,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921865393] [2021-11-23 03:20:19,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:19,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:20:19,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:20:19,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:20:19,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:20:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:22,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:20:22,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:23,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:20:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:23,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:20:23,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921865393] [2021-11-23 03:20:23,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921865393] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:20:23,377 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:20:23,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 03:20:23,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398810882] [2021-11-23 03:20:23,377 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:20:23,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:20:23,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:20:23,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:20:23,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:20:23,381 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) [2021-11-23 03:20:26,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:20:26,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:26,551 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-11-23 03:20:26,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:20:26,919 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 [2021-11-23 03:20:26,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:26,920 INFO L225 Difference]: With dead ends: 28 [2021-11-23 03:20:26,920 INFO L226 Difference]: Without dead ends: 14 [2021-11-23 03:20:26,921 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 [2021-11-23 03:20:26,923 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:20:26,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 39 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2021-11-23 03:20:26,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-23 03:20:26,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-23 03:20:26,927 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) [2021-11-23 03:20:26,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-23 03:20:26,928 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2021-11-23 03:20:26,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:26,929 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-23 03:20:26,929 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) [2021-11-23 03:20:26,929 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-23 03:20:26,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:20:26,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:26,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:20:26,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:20:27,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:20:27,138 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:20:27,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash -303331535, now seen corresponding path program 1 times [2021-11-23 03:20:27,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:20:27,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694496283] [2021-11-23 03:20:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:27,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:20:27,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:20:27,142 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:20:27,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c3df6b-7bc7-4438-8feb-ab626a2c9232/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 03:20:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:37,756 WARN L261 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-23 03:20:37,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:40,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:20:40,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:20:40,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:20:41,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:20:41,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:20:41,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:20:41,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:20:41,069 INFO L244 Elim1Store]: Index analysis took 136 ms [2021-11-23 03:20:41,899 INFO L354 Elim1Store]: treesize reduction 459, result has 5.9 percent of original size [2021-11-23 03:20:41,901 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 [2021-11-23 03:20:47,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:20:47,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:20:47,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:20:47,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:20:48,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:20:48,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:20:48,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:20:48,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:20:48,058 INFO L244 Elim1Store]: Index analysis took 149 ms [2021-11-23 03:20:48,103 INFO L354 Elim1Store]: treesize reduction 362, result has 0.3 percent of original size [2021-11-23 03:20:48,104 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 [2021-11-23 03:20:55,844 WARN L227 SmtUtils]: Spent 5.67s 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) [2021-11-23 03:21:03,649 WARN L227 SmtUtils]: Spent 5.55s 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) [2021-11-23 03:21:11,610 WARN L227 SmtUtils]: Spent 5.48s 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) [2021-11-23 03:21:19,097 WARN L227 SmtUtils]: Spent 5.25s 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) [2021-11-23 03:21:19,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:22:30,880 WARN L227 SmtUtils]: Spent 1.19m 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) [2021-11-23 03:22:30,883 INFO L354 Elim1Store]: treesize reduction 709, result has 3.9 percent of original size [2021-11-23 03:22:30,884 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 [2021-11-23 03:29:56,338 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 [2021-11-23 03:29:57,593 INFO L354 Elim1Store]: treesize reduction 538, result has 0.2 percent of original size [2021-11-23 03:29:57,594 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