./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan --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 572360d878facce0c5d840a57f70fa0d65d827a5 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan --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 572360d878facce0c5d840a57f70fa0d65d827a5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:01:47,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:01:47,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:01:47,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:01:47,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:01:47,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:01:47,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:01:47,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:01:47,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:01:47,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:01:47,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:01:47,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:01:47,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:01:47,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:01:47,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:01:47,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:01:47,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:01:47,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:01:47,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:01:47,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:01:47,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:01:47,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:01:47,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:01:47,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:01:47,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:01:47,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:01:47,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:01:47,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:01:47,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:01:47,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:01:47,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:01:47,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:01:47,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:01:47,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:01:47,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:01:47,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:01:47,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:01:47,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:01:47,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:01:47,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:01:47,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:01:47,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:01:47,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:01:47,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:01:47,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:01:47,305 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:01:47,305 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:01:47,305 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:01:47,305 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:01:47,306 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:01:47,306 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:01:47,306 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:01:47,306 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:01:47,306 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:01:47,306 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:01:47,306 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:01:47,306 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:01:47,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:01:47,307 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:01:47,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:01:47,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:01:47,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:01:47,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:01:47,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:01:47,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:01:47,308 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:01:47,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:01:47,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:01:47,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:01:47,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:01:47,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:01:47,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:01:47,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:01:47,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:01:47,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:01:47,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:01:47,309 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:01:47,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:01:47,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:01:47,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:01:47,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:01:47,310 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-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 572360d878facce0c5d840a57f70fa0d65d827a5 [2020-12-09 05:01:47,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:01:47,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:01:47,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:01:47,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:01:47,510 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:01:47,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c [2020-12-09 05:01:47,551 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/data/8cef3fa95/ab2f9d9509434cafb5022804adc5c674/FLAGf24b8ff3b [2020-12-09 05:01:47,907 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:01:47,907 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c [2020-12-09 05:01:47,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/data/8cef3fa95/ab2f9d9509434cafb5022804adc5c674/FLAGf24b8ff3b [2020-12-09 05:01:47,924 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/data/8cef3fa95/ab2f9d9509434cafb5022804adc5c674 [2020-12-09 05:01:47,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:01:47,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:01:47,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:01:47,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:01:47,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:01:47,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:01:47" (1/1) ... [2020-12-09 05:01:47,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543b9c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:47, skipping insertion in model container [2020-12-09 05:01:47,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:01:47" (1/1) ... [2020-12-09 05:01:47,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:01:47,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:01:48,042 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c[520,533] [2020-12-09 05:01:48,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:01:48,058 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:01:48,067 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c[520,533] [2020-12-09 05:01:48,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:01:48,082 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:01:48,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:48 WrapperNode [2020-12-09 05:01:48,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:01:48,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:01:48,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:01:48,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:01:48,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:48" (1/1) ... [2020-12-09 05:01:48,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:48" (1/1) ... [2020-12-09 05:01:48,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:01:48,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:01:48,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:01:48,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:01:48,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:48" (1/1) ... [2020-12-09 05:01:48,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:48" (1/1) ... [2020-12-09 05:01:48,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:48" (1/1) ... [2020-12-09 05:01:48,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:48" (1/1) ... [2020-12-09 05:01:48,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:48" (1/1) ... [2020-12-09 05:01:48,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:48" (1/1) ... [2020-12-09 05:01:48,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:48" (1/1) ... [2020-12-09 05:01:48,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:01:48,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:01:48,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:01:48,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:01:48,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:01:48,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:01:48,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:01:48,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:01:48,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:01:48,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:01:48,399 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-09 05:01:48,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:01:48 BoogieIcfgContainer [2020-12-09 05:01:48,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:01:48,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:01:48,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:01:48,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:01:48,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:01:47" (1/3) ... [2020-12-09 05:01:48,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b6d2b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:01:48, skipping insertion in model container [2020-12-09 05:01:48,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:01:48" (2/3) ... [2020-12-09 05:01:48,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b6d2b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:01:48, skipping insertion in model container [2020-12-09 05:01:48,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:01:48" (3/3) ... [2020-12-09 05:01:48,407 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound5.c [2020-12-09 05:01:48,417 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:01:48,419 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 05:01:48,427 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 05:01:48,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:01:48,444 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:01:48,444 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:01:48,444 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:01:48,444 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:01:48,444 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:01:48,444 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:01:48,444 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:01:48,454 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-09 05:01:48,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 05:01:48,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:01:48,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 05:01:48,458 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:01:48,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:01:48,462 INFO L82 PathProgramCache]: Analyzing trace with hash 3980175, now seen corresponding path program 1 times [2020-12-09 05:01:48,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:01:48,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013164896] [2020-12-09 05:01:48,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:01:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:01:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:01:48,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013164896] [2020-12-09 05:01:48,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:01:48,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:01:48,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62731455] [2020-12-09 05:01:48,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:01:48,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:01:48,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:01:48,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:01:48,630 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-12-09 05:01:48,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:01:48,708 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2020-12-09 05:01:48,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:01:48,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-09 05:01:48,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:01:48,715 INFO L225 Difference]: With dead ends: 78 [2020-12-09 05:01:48,715 INFO L226 Difference]: Without dead ends: 47 [2020-12-09 05:01:48,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:01:48,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-09 05:01:48,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-12-09 05:01:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:01:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-12-09 05:01:48,743 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 4 [2020-12-09 05:01:48,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:01:48,744 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-12-09 05:01:48,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:01:48,744 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-12-09 05:01:48,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 05:01:48,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:01:48,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 05:01:48,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:01:48,745 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:01:48,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:01:48,746 INFO L82 PathProgramCache]: Analyzing trace with hash -469863374, now seen corresponding path program 1 times [2020-12-09 05:01:48,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:01:48,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066824469] [2020-12-09 05:01:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:01:48,758 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:01:48,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907418977] [2020-12-09 05:01:48,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:01:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:01:48,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 05:01:48,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:01:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:01:48,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:01:48,909 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 05:01:48,909 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 05:01:48,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:01:48,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066824469] [2020-12-09 05:01:48,925 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:01:48,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907418977] [2020-12-09 05:01:48,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:01:48,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-09 05:01:48,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516679690] [2020-12-09 05:01:48,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 05:01:48,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:01:48,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 05:01:48,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 05:01:48,929 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 10 states. [2020-12-09 05:01:49,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:01:49,074 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-12-09 05:01:49,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 05:01:49,075 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 6 [2020-12-09 05:01:49,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:01:49,075 INFO L225 Difference]: With dead ends: 47 [2020-12-09 05:01:49,075 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 05:01:49,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2020-12-09 05:01:49,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 05:01:49,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-12-09 05:01:49,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 05:01:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-12-09 05:01:49,081 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 6 [2020-12-09 05:01:49,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:01:49,082 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-12-09 05:01:49,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 05:01:49,082 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-12-09 05:01:49,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 05:01:49,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:01:49,082 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:01:49,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 05:01:49,284 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:01:49,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:01:49,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1203127770, now seen corresponding path program 1 times [2020-12-09 05:01:49,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:01:49,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137845327] [2020-12-09 05:01:49,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:01:49,301 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:01:49,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970015018] [2020-12-09 05:01:49,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:01:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:01:49,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 05:01:49,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:01:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:01:49,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:01:49,469 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 05:01:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 05:01:49,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137845327] [2020-12-09 05:01:49,499 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:01:49,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970015018] [2020-12-09 05:01:49,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1808724294] [2020-12-09 05:01:49,516 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 05:01:49,516 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:01:49,519 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:01:49,524 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:01:49,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:01:49,587 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:01:49,594 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:01:50,146 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:01:50,617 WARN L197 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 87 [2020-12-09 05:01:51,087 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-12-09 05:01:51,087 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:01:51,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 05:01:51,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2020-12-09 05:01:51,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139913076] [2020-12-09 05:01:51,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:01:51,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:01:51,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:01:51,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-09 05:01:51,089 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 6 states. [2020-12-09 05:01:51,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:01:51,150 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-12-09 05:01:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 05:01:51,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-09 05:01:51,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:01:51,151 INFO L225 Difference]: With dead ends: 46 [2020-12-09 05:01:51,151 INFO L226 Difference]: Without dead ends: 42 [2020-12-09 05:01:51,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-12-09 05:01:51,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-09 05:01:51,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 25. [2020-12-09 05:01:51,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 05:01:51,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-12-09 05:01:51,155 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 11 [2020-12-09 05:01:51,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:01:51,156 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-12-09 05:01:51,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:01:51,156 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-12-09 05:01:51,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 05:01:51,156 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:01:51,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-09 05:01:51,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:01:51,358 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:01:51,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:01:51,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1576664640, now seen corresponding path program 1 times [2020-12-09 05:01:51,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:01:51,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831362418] [2020-12-09 05:01:51,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:01:51,391 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:01:51,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763863128] [2020-12-09 05:01:51,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:01:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:01:51,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-09 05:01:51,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:01:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:01:51,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:01:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:01:58,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831362418] [2020-12-09 05:01:58,177 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:01:58,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763863128] [2020-12-09 05:01:58,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1528617368] [2020-12-09 05:01:58,179 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 05:01:58,179 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:01:58,179 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:01:58,179 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:01:58,180 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:01:58,197 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:01:58,202 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:01:58,477 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:01:58,616 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2020-12-09 05:01:58,972 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 87 [2020-12-09 05:01:59,496 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-12-09 05:01:59,557 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:01:59,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 05:01:59,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-09 05:01:59,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078946709] [2020-12-09 05:01:59,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 05:01:59,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:01:59,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 05:01:59,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=235, Unknown=3, NotChecked=0, Total=306 [2020-12-09 05:01:59,558 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 12 states. [2020-12-09 05:02:05,677 WARN L197 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-09 05:02:13,826 WARN L197 SmtUtils]: Spent 8.11 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 05:02:19,881 WARN L197 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 27 [2020-12-09 05:03:28,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:03:28,026 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-12-09 05:03:28,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 05:03:28,027 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-12-09 05:03:28,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:03:28,027 INFO L225 Difference]: With dead ends: 62 [2020-12-09 05:03:28,027 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 05:03:28,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 48.0s TimeCoverageRelationStatistics Valid=173, Invalid=517, Unknown=12, NotChecked=0, Total=702 [2020-12-09 05:03:28,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 05:03:28,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-12-09 05:03:28,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-09 05:03:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-12-09 05:03:28,035 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 15 [2020-12-09 05:03:28,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:03:28,035 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-12-09 05:03:28,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 05:03:28,035 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-12-09 05:03:28,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 05:03:28,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:03:28,036 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2020-12-09 05:03:28,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:03:28,238 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:03:28,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:03:28,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1309172917, now seen corresponding path program 2 times [2020-12-09 05:03:28,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:03:28,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134012708] [2020-12-09 05:03:28,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:03:28,274 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:03:28,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679504716] [2020-12-09 05:03:28,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:03:28,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-12-09 05:03:28,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:03:28,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-09 05:03:28,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:03:28,395 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-09 05:03:28,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:03:36,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134012708] [2020-12-09 05:03:36,691 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:03:36,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679504716] [2020-12-09 05:03:36,691 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-09 05:03:36,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1931730073] [2020-12-09 05:03:36,693 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 05:03:36,693 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:03:36,693 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:03:36,693 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:03:36,693 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:03:36,726 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:03:36,731 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:03:36,989 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:03:37,541 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 94 [2020-12-09 05:03:37,991 WARN L197 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 101 [2020-12-09 05:03:45,033 WARN L197 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 97 [2020-12-09 05:03:52,151 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:03:52,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:03:52,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 05:03:52,151 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-09 05:03:52,151 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 05:03:52,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:03:52,363 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 05:03:52,363 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 05:03:52,371 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 05:03:52,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:03:52 BoogieIcfgContainer [2020-12-09 05:03:52,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:03:52,372 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:03:52,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:03:52,372 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:03:52,372 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:01:48" (3/4) ... [2020-12-09 05:03:52,374 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 05:03:52,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:03:52,375 INFO L168 Benchmark]: Toolchain (without parser) took 124447.92 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 80.3 MB in the beginning and 95.1 MB in the end (delta: -14.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:03:52,376 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 44.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:03:52,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.02 ms. Allocated memory is still 102.8 MB. Free memory was 79.9 MB in the beginning and 70.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 05:03:52,376 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.73 ms. Allocated memory is still 102.8 MB. Free memory was 70.2 MB in the beginning and 68.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:03:52,377 INFO L168 Benchmark]: Boogie Preprocessor took 15.55 ms. Allocated memory is still 102.8 MB. Free memory was 68.6 MB in the beginning and 67.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:03:52,377 INFO L168 Benchmark]: RCFGBuilder took 277.76 ms. Allocated memory is still 102.8 MB. Free memory was 67.3 MB in the beginning and 68.1 MB in the end (delta: -766.6 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 05:03:52,378 INFO L168 Benchmark]: TraceAbstraction took 123969.59 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 68.1 MB in the beginning and 95.1 MB in the end (delta: -27.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:03:52,378 INFO L168 Benchmark]: Witness Printer took 2.69 ms. Allocated memory is still 123.7 MB. Free memory is still 95.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:03:52,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 44.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 154.02 ms. Allocated memory is still 102.8 MB. Free memory was 79.9 MB in the beginning and 70.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.73 ms. Allocated memory is still 102.8 MB. Free memory was 70.2 MB in the beginning and 68.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.55 ms. Allocated memory is still 102.8 MB. Free memory was 68.6 MB in the beginning and 67.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 277.76 ms. Allocated memory is still 102.8 MB. Free memory was 67.3 MB in the beginning and 68.1 MB in the end (delta: -766.6 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 123969.59 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 68.1 MB in the beginning and 95.1 MB in the end (delta: -27.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.69 ms. Allocated memory is still 123.7 MB. Free memory is still 95.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L21] int n; [L22] long long a, s, t; [L23] n = __VERIFIER_nondet_int() [L9] COND TRUE !cond [L26] a = 0 [L27] s = 1 [L28] t = 1 [L30] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 123.9s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 88.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 194 SDslu, 75 SDs, 0 SdLazy, 215 SolverSat, 177 SolverUnsat, 22 SolverUnknown, 0 SolverNotchecked, 48.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 43 SyntacticMatches, 8 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 49.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 35 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 6739 SizeOfPredicates, 15 NumberOfNonLiveVariables, 212 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 1/16 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:03:53,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:03:53,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:03:53,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:03:53,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:03:53,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:03:53,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:03:53,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:03:53,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:03:53,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:03:53,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:03:53,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:03:53,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:03:53,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:03:53,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:03:53,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:03:53,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:03:53,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:03:53,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:03:53,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:03:53,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:03:53,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:03:53,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:03:53,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:03:53,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:03:53,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:03:53,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:03:53,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:03:53,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:03:53,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:03:53,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:03:53,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:03:53,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:03:53,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:03:53,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:03:53,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:03:53,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:03:53,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:03:53,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:03:53,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:03:53,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:03:53,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 05:03:53,940 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:03:53,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:03:53,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:03:53,941 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:03:53,941 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:03:53,942 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:03:53,942 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:03:53,942 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:03:53,942 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:03:53,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:03:53,943 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:03:53,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:03:53,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:03:53,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:03:53,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:03:53,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:03:53,944 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:03:53,944 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 05:03:53,944 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 05:03:53,945 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:03:53,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:03:53,945 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:03:53,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:03:53,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:03:53,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 05:03:53,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:03:53,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:03:53,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:03:53,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:03:53,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:03:53,946 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 05:03:53,947 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 05:03:53,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:03:53,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:03:53,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:03:53,947 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-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 572360d878facce0c5d840a57f70fa0d65d827a5 [2020-12-09 05:03:54,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:03:54,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:03:54,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:03:54,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:03:54,198 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:03:54,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c [2020-12-09 05:03:54,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/data/2bb44e502/dbfce2861f0f47c2b28292cecbd0b3e4/FLAG48c1221e6 [2020-12-09 05:03:54,612 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:03:54,612 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c [2020-12-09 05:03:54,617 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/data/2bb44e502/dbfce2861f0f47c2b28292cecbd0b3e4/FLAG48c1221e6 [2020-12-09 05:03:54,627 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/data/2bb44e502/dbfce2861f0f47c2b28292cecbd0b3e4 [2020-12-09 05:03:54,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:03:54,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:03:54,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:03:54,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:03:54,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:03:54,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:03:54" (1/1) ... [2020-12-09 05:03:54,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3704de18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:03:54, skipping insertion in model container [2020-12-09 05:03:54,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:03:54" (1/1) ... [2020-12-09 05:03:54,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:03:54,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:03:54,744 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c[520,533] [2020-12-09 05:03:54,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:03:54,764 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:03:54,773 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c[520,533] [2020-12-09 05:03:54,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:03:54,788 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:03:54,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:03:54 WrapperNode [2020-12-09 05:03:54,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:03:54,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:03:54,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:03:54,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:03:54,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:03:54" (1/1) ... [2020-12-09 05:03:54,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:03:54" (1/1) ... [2020-12-09 05:03:54,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:03:54,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:03:54,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:03:54,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:03:54,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:03:54" (1/1) ... [2020-12-09 05:03:54,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:03:54" (1/1) ... [2020-12-09 05:03:54,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:03:54" (1/1) ... [2020-12-09 05:03:54,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:03:54" (1/1) ... [2020-12-09 05:03:54,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:03:54" (1/1) ... [2020-12-09 05:03:54,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:03:54" (1/1) ... [2020-12-09 05:03:54,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:03:54" (1/1) ... [2020-12-09 05:03:54,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:03:54,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:03:54,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:03:54,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:03:54,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:03:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:03:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 05:03:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:03:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:03:54,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:03:55,359 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:03:55,360 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-09 05:03:55,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:03:55 BoogieIcfgContainer [2020-12-09 05:03:55,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:03:55,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:03:55,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:03:55,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:03:55,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:03:54" (1/3) ... [2020-12-09 05:03:55,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bac03ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:03:55, skipping insertion in model container [2020-12-09 05:03:55,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:03:54" (2/3) ... [2020-12-09 05:03:55,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bac03ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:03:55, skipping insertion in model container [2020-12-09 05:03:55,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:03:55" (3/3) ... [2020-12-09 05:03:55,366 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound5.c [2020-12-09 05:03:55,376 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:03:55,378 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 05:03:55,390 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 05:03:55,408 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:03:55,408 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:03:55,408 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:03:55,408 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:03:55,408 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:03:55,408 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:03:55,408 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:03:55,408 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:03:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-09 05:03:55,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 05:03:55,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:03:55,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:03:55,423 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:03:55,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:03:55,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-09 05:03:55,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:03:55,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465585755] [2020-12-09 05:03:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 05:03:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:03:55,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 05:03:55,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:03:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:03:55,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:03:55,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465585755] [2020-12-09 05:03:55,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:03:55,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:03:55,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670713023] [2020-12-09 05:03:55,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 05:03:55,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:03:55,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 05:03:55,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:03:55,524 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-09 05:03:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:03:55,536 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-12-09 05:03:55,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 05:03:55,537 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-09 05:03:55,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:03:55,543 INFO L225 Difference]: With dead ends: 63 [2020-12-09 05:03:55,543 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 05:03:55,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:03:55,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 05:03:55,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 05:03:55,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 05:03:55,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-12-09 05:03:55,568 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-12-09 05:03:55,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:03:55,569 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-12-09 05:03:55,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 05:03:55,569 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-12-09 05:03:55,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 05:03:55,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:03:55,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:03:55,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 05:03:55,771 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:03:55,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:03:55,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-09 05:03:55,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:03:55,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486607786] [2020-12-09 05:03:55,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 05:03:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:03:55,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:03:55,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:03:55,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:03:55,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:03:55,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486607786] [2020-12-09 05:03:55,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:03:55,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:03:55,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703829927] [2020-12-09 05:03:55,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:03:55,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:03:55,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:03:55,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:03:55,884 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 4 states. [2020-12-09 05:03:56,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:03:56,274 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-12-09 05:03:56,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:03:56,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 05:03:56,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:03:56,281 INFO L225 Difference]: With dead ends: 54 [2020-12-09 05:03:56,281 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 05:03:56,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:03:56,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 05:03:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-12-09 05:03:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-09 05:03:56,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-12-09 05:03:56,287 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2020-12-09 05:03:56,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:03:56,288 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-12-09 05:03:56,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:03:56,288 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-12-09 05:03:56,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 05:03:56,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:03:56,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:03:56,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 05:03:56,490 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:03:56,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:03:56,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-09 05:03:56,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:03:56,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052554485] [2020-12-09 05:03:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 05:03:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:03:56,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:03:56,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:03:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:03:56,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:03:56,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052554485] [2020-12-09 05:03:56,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:03:56,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:03:56,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402368984] [2020-12-09 05:03:56,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:03:56,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:03:56,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:03:56,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:03:56,602 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 4 states. [2020-12-09 05:03:57,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:03:57,143 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-12-09 05:03:57,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:03:57,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 05:03:57,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:03:57,151 INFO L225 Difference]: With dead ends: 50 [2020-12-09 05:03:57,151 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 05:03:57,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:03:57,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 05:03:57,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-12-09 05:03:57,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 05:03:57,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-12-09 05:03:57,156 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 9 [2020-12-09 05:03:57,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:03:57,156 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-12-09 05:03:57,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:03:57,156 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-12-09 05:03:57,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 05:03:57,156 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:03:57,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:03:57,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 05:03:57,358 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:03:57,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:03:57,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2020-12-09 05:03:57,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:03:57,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401576881] [2020-12-09 05:03:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 05:03:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:03:57,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:03:57,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:03:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:03:57,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:03:57,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401576881] [2020-12-09 05:03:57,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:03:57,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:03:57,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789367154] [2020-12-09 05:03:57,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:03:57,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:03:57,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:03:57,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:03:57,550 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 4 states. [2020-12-09 05:03:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:03:58,108 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-12-09 05:03:58,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:03:58,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 05:03:58,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:03:58,109 INFO L225 Difference]: With dead ends: 47 [2020-12-09 05:03:58,109 INFO L226 Difference]: Without dead ends: 37 [2020-12-09 05:03:58,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:03:58,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-09 05:03:58,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-12-09 05:03:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 05:03:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-12-09 05:03:58,113 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 11 [2020-12-09 05:03:58,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:03:58,113 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-12-09 05:03:58,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:03:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-12-09 05:03:58,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 05:03:58,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:03:58,114 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:03:58,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 05:03:58,316 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:03:58,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:03:58,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1783845574, now seen corresponding path program 1 times [2020-12-09 05:03:58,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:03:58,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449294611] [2020-12-09 05:03:58,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 05:03:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:03:58,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 05:03:58,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:03:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:03:58,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:03:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 05:03:58,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449294611] [2020-12-09 05:03:58,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [268525384] [2020-12-09 05:03:58,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt [2020-12-09 05:03:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:03:58,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 05:03:58,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:03:58,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:03:58,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:03:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 05:03:58,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648056726] [2020-12-09 05:03:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:03:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:03:58,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 05:03:58,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:03:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:03:58,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:03:59,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 05:03:59,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 05:03:59,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5, 4, 6, 4] total 8 [2020-12-09 05:03:59,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781265936] [2020-12-09 05:03:59,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 05:03:59,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:03:59,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 05:03:59,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:03:59,048 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 8 states. [2020-12-09 05:03:59,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:03:59,783 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-12-09 05:03:59,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 05:03:59,789 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-09 05:03:59,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:03:59,790 INFO L225 Difference]: With dead ends: 57 [2020-12-09 05:03:59,790 INFO L226 Difference]: Without dead ends: 53 [2020-12-09 05:03:59,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-09 05:03:59,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-09 05:03:59,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2020-12-09 05:03:59,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 05:03:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-12-09 05:03:59,797 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 14 [2020-12-09 05:03:59,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:03:59,798 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-12-09 05:03:59,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 05:03:59,798 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-12-09 05:03:59,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 05:03:59,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:03:59,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:04:00,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:04:00,401 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:04:00,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:04:00,402 INFO L82 PathProgramCache]: Analyzing trace with hash -583489763, now seen corresponding path program 1 times [2020-12-09 05:04:00,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:04:00,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651485694] [2020-12-09 05:04:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 05:04:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:00,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 05:04:00,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:04:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:00,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:04:01,229 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-09 05:04:01,944 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 05:04:01,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:01,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651485694] [2020-12-09 05:04:01,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1513456825] [2020-12-09 05:04:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt [2020-12-09 05:04:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:02,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 05:04:02,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:04:02,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:02,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:04:02,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:02,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395785049] [2020-12-09 05:04:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:04:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:04:02,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 05:04:02,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:04:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:02,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:04:03,618 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 05:04:03,625 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 05:04:03,626 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 05:04:06,803 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 05:04:13,648 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 05:04:13,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:04:13,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 05:04:13,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 8, 7] total 14 [2020-12-09 05:04:13,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437453059] [2020-12-09 05:04:13,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 05:04:13,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:04:13,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 05:04:13,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=127, Unknown=4, NotChecked=0, Total=182 [2020-12-09 05:04:13,674 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 14 states. [2020-12-09 05:04:25,963 WARN L197 SmtUtils]: Spent 9.65 s on a formula simplification that was a NOOP. DAG size: 39 [2020-12-09 05:04:38,647 WARN L197 SmtUtils]: Spent 9.04 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-09 05:04:49,251 WARN L197 SmtUtils]: Spent 8.91 s on a formula simplification that was a NOOP. DAG size: 38 [2020-12-09 05:05:04,102 WARN L197 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 05:05:13,629 WARN L197 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-12-09 05:05:21,336 WARN L197 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-09 05:05:50,537 WARN L197 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 05:06:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:06:03,132 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-12-09 05:06:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 05:06:03,139 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2020-12-09 05:06:03,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:06:03,139 INFO L225 Difference]: With dead ends: 73 [2020-12-09 05:06:03,140 INFO L226 Difference]: Without dead ends: 59 [2020-12-09 05:06:03,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 54.9s TimeCoverageRelationStatistics Valid=182, Invalid=411, Unknown=7, NotChecked=0, Total=600 [2020-12-09 05:06:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-09 05:06:03,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 48. [2020-12-09 05:06:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-09 05:06:03,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-12-09 05:06:03,149 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 16 [2020-12-09 05:06:03,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:06:03,149 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-12-09 05:06:03,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 05:06:03,149 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-12-09 05:06:03,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 05:06:03,149 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:06:03,149 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-09 05:06:03,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:06:03,753 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:06:03,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:06:03,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 1 times [2020-12-09 05:06:03,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:06:03,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923133890] [2020-12-09 05:06:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 05:06:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:06:04,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 05:06:04,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:06:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:06:04,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:06:04,920 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 05:06:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-09 05:06:06,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923133890] [2020-12-09 05:06:06,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [151354578] [2020-12-09 05:06:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt [2020-12-09 05:06:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:06:06,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 05:06:06,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:06:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:06:06,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:06:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-09 05:06:07,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092895960] [2020-12-09 05:06:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:06:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:06:08,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 05:06:08,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:06:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:06:08,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:06:10,332 WARN L197 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 05:06:10,337 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 05:06:10,337 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 05:06:15,322 WARN L197 SmtUtils]: Spent 2.46 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 05:06:22,290 WARN L197 SmtUtils]: Spent 932.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-12-09 05:06:31,784 WARN L197 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 40 [2020-12-09 05:06:31,790 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 05:06:31,790 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 05:06:34,021 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ sign_extend 32) (_ bv1 32))) (.cse0 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse3 ((_ sign_extend 32) (_ bv0 32))) (.cse5 (bvmul c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0)) (.cse6 (bvmul c_ULTIMATE.start_main_~t~0 .cse0)) (.cse4 ((_ sign_extend 32) (_ bv4 32))) (.cse1 (bvmul .cse2 .cse2))) (or (not (= (bvadd .cse0 c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~t~0) (bvadd (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) (bvmul (_ bv4 64) .cse1) (bvmul (_ bv4 64) (bvmul .cse2 c_ULTIMATE.start_main_~a~0))))) (not (= .cse3 (bvadd (bvneg (bvmul .cse4 c_ULTIMATE.start_main_~s~0)) .cse5 .cse6 .cse2))) (= .cse3 (bvadd (bvmul (_ bv2 64) (bvmul .cse0 .cse0)) .cse5 (bvmul (_ bv3 64) .cse6) .cse2 (bvneg (bvmul .cse4 (let ((.cse7 (bvadd .cse2 c_ULTIMATE.start_main_~a~0))) (bvadd .cse1 (bvmul .cse7 .cse7) (bvmul (bvmul .cse7 .cse2) (_ bv2 64))))))))))) is different from true [2020-12-09 05:06:36,245 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ sign_extend 32) (_ bv1 32))) (.cse0 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse3 ((_ sign_extend 32) (_ bv0 32))) (.cse5 (bvmul c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0)) (.cse6 (bvmul c_ULTIMATE.start_main_~t~0 .cse0)) (.cse4 ((_ sign_extend 32) (_ bv4 32))) (.cse1 (bvmul .cse2 .cse2))) (or (not (= (bvadd .cse0 c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~t~0) (bvadd (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) (bvmul (_ bv4 64) .cse1) (bvmul (_ bv4 64) (bvmul .cse2 c_ULTIMATE.start_main_~a~0))))) (not (= .cse3 (bvadd (bvneg (bvmul .cse4 c_ULTIMATE.start_main_~s~0)) .cse5 .cse6 .cse2))) (= .cse3 (bvadd (bvmul (_ bv2 64) (bvmul .cse0 .cse0)) .cse5 (bvmul (_ bv3 64) .cse6) .cse2 (bvneg (bvmul .cse4 (let ((.cse7 (bvadd .cse2 c_ULTIMATE.start_main_~a~0))) (bvadd .cse1 (bvmul .cse7 .cse7) (bvmul (bvmul .cse7 .cse2) (_ bv2 64)))))))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))))) is different from true [2020-12-09 05:06:36,251 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 05:06:36,252 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 05:06:38,529 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ sign_extend 32) (_ bv1 32))) (.cse0 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse3 ((_ sign_extend 32) (_ bv0 32))) (.cse5 (bvmul c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0)) (.cse6 (bvmul c_ULTIMATE.start_main_~t~0 .cse0)) (.cse4 ((_ sign_extend 32) (_ bv4 32))) (.cse1 (bvmul .cse2 .cse2))) (or (not (= (bvadd .cse0 c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~t~0) (bvadd (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) (bvmul (_ bv4 64) .cse1) (bvmul (_ bv4 64) (bvmul .cse2 c_ULTIMATE.start_main_~a~0))))) (not (= .cse3 (bvadd (bvneg (bvmul .cse4 c_ULTIMATE.start_main_~s~0)) .cse5 .cse6 .cse2))) (= .cse3 (bvadd (bvmul (_ bv2 64) (bvmul .cse0 .cse0)) .cse5 (bvmul (_ bv3 64) .cse6) .cse2 (bvneg (bvmul .cse4 (let ((.cse7 (bvadd .cse2 c_ULTIMATE.start_main_~a~0))) (bvadd .cse1 (bvmul .cse7 .cse7) (bvmul (bvmul .cse7 .cse2) (_ bv2 64)))))))) (not (= (bvadd .cse2 (bvmul c_ULTIMATE.start_main_~a~0 .cse0)) c_ULTIMATE.start_main_~t~0))))) is different from true [2020-12-09 05:06:38,558 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2020-12-09 05:06:38,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 05:06:38,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 6, 4, 10, 11] total 21 [2020-12-09 05:06:38,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588926694] [2020-12-09 05:06:38,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-09 05:06:38,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:06:38,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-09 05:06:38,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=219, Unknown=6, NotChecked=102, Total=420 [2020-12-09 05:06:38,560 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 21 states. [2020-12-09 05:06:41,930 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 26 [2020-12-09 05:06:43,949 WARN L197 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 34 [2020-12-09 05:07:11,339 WARN L197 SmtUtils]: Spent 24.63 s on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-12-09 05:07:35,052 WARN L197 SmtUtils]: Spent 21.23 s on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-09 05:08:02,651 WARN L197 SmtUtils]: Spent 25.96 s on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-09 05:08:53,103 WARN L197 SmtUtils]: Spent 31.80 s on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-09 05:09:30,052 WARN L197 SmtUtils]: Spent 26.61 s on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-12-09 05:09:31,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:09:31,617 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-12-09 05:09:31,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 05:09:31,617 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 25 [2020-12-09 05:09:31,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:09:31,618 INFO L225 Difference]: With dead ends: 54 [2020-12-09 05:09:31,618 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 05:09:31,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 121 SyntacticMatches, 16 SemanticMatches, 28 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 193.4s TimeCoverageRelationStatistics Valid=208, Invalid=492, Unknown=14, NotChecked=156, Total=870 [2020-12-09 05:09:31,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 05:09:31,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-12-09 05:09:31,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-09 05:09:31,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-12-09 05:09:31,627 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 25 [2020-12-09 05:09:31,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:09:31,627 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-12-09 05:09:31,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-09 05:09:31,627 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-12-09 05:09:31,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-09 05:09:31,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:09:31,628 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2020-12-09 05:09:32,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 cvc4 --incremental --print-success --lang smt,12 mathsat -unsat_core_generation=3 [2020-12-09 05:09:32,231 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:09:32,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:09:32,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1602839570, now seen corresponding path program 2 times [2020-12-09 05:09:32,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:09:32,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807852632] [2020-12-09 05:09:32,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-09 05:09:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:09:32,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 05:09:32,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:09:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 33 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 05:09:32,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:09:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 33 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 05:09:33,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807852632] [2020-12-09 05:09:33,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2026630156] [2020-12-09 05:09:33,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt [2020-12-09 05:09:33,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-09 05:09:33,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:09:33,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 05:09:33,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:09:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:09:33,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:09:36,156 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-09 05:09:38,110 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 05:09:40,486 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-09 05:09:43,186 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-09 05:09:46,228 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 05:09:46,249 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:09:46,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468407432] [2020-12-09 05:09:46,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0441a8f-01fc-4d86-850b-f1f914cddec0/bin/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:09:47,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-09 05:09:47,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:09:47,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 05:09:47,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:09:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 33 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 05:09:48,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:09:49,312 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 05:09:49,312 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 05:09:51,964 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 05:09:51,964 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 05:09:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 33 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 05:09:53,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 05:09:53,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 8, 10, 10] total 35 [2020-12-09 05:09:53,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404693425] [2020-12-09 05:09:53,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-09 05:09:53,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:09:53,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-09 05:09:53,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=990, Unknown=0, NotChecked=0, Total=1190 [2020-12-09 05:09:53,953 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 35 states. [2020-12-09 05:09:56,162 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2020-12-09 05:09:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:09:56,880 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-12-09 05:09:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 05:09:56,881 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 37 [2020-12-09 05:09:56,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:09:56,881 INFO L225 Difference]: With dead ends: 38 [2020-12-09 05:09:56,881 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:09:56,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 180 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=293, Invalid=1267, Unknown=0, NotChecked=0, Total=1560 [2020-12-09 05:09:56,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:09:56,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:09:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:09:56,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:09:56,883 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-12-09 05:09:56,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:09:56,883 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:09:56,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-09 05:09:56,883 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:09:56,883 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:09:57,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt,15 mathsat -unsat_core_generation=3,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:09:57,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 05:09:58,289 WARN L197 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 46 [2020-12-09 05:10:38,614 WARN L197 SmtUtils]: Spent 40.32 s on a formula simplification. DAG size of input: 103 DAG size of output: 64 [2020-12-09 05:10:39,307 WARN L197 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 48 [2020-12-09 05:10:39,989 WARN L197 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 48 [2020-12-09 05:11:37,481 WARN L197 SmtUtils]: Spent 57.49 s on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2020-12-09 05:11:38,110 WARN L197 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 48 [2020-12-09 05:11:38,112 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 05:11:38,112 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 05:11:38,112 INFO L265 CegarLoopResult]: At program point L48(lines 20 49) the Hoare annotation is: true [2020-12-09 05:11:38,112 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 05:11:38,113 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 05:11:38,113 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 05:11:38,113 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 05:11:38,113 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 05:11:38,113 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-09 05:11:38,113 INFO L258 CegarLoopResult]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse9 ((_ sign_extend 32) (_ bv1 32))) (.cse6 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse2 (= (bvadd .cse9 (bvmul ULTIMATE.start_main_~a~0 .cse6)) ULTIMATE.start_main_~t~0)) (.cse7 (bvmul .cse9 (_ bv2 64))) (.cse1 (bvmul .cse9 (_ bv18446744073709551615 64))) (.cse3 (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32))) (.cse4 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse5 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse8 (bvsle ULTIMATE.start_main_~n~0 (_ bv5 32)))) (or (and (= .cse0 (bvadd .cse1 ULTIMATE.start_main_~a~0)) .cse2 .cse3 .cse4 .cse5 (= (bvadd ULTIMATE.start_main_~s~0 (bvmul .cse6 (_ bv18446744073709551615 64))) .cse7) .cse8) (and .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~a~0 (bvadd .cse7 .cse0)) .cse8 (= (bvadd (bvmul ULTIMATE.start_main_~t~0 (_ bv18446744073709551614 64)) .cse1 ULTIMATE.start_main_~s~0 .cse6) (_ bv0 64))) (and .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~s~0 .cse9) (= .cse0 ULTIMATE.start_main_~a~0) .cse8 (= ULTIMATE.start_main_~t~0 .cse9))))) [2020-12-09 05:11:38,113 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-09 05:11:38,113 INFO L262 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-12-09 05:11:38,113 INFO L258 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse10 ((_ sign_extend 32) (_ bv1 32))) (.cse7 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse2 (= (bvadd .cse10 (bvmul ULTIMATE.start_main_~a~0 .cse7)) ULTIMATE.start_main_~t~0)) (.cse3 (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32))) (.cse4 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (.cse5 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse6 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse8 (bvmul .cse10 (_ bv2 64))) (.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse9 (bvsle ULTIMATE.start_main_~n~0 (_ bv5 32))) (.cse1 (bvmul .cse10 (_ bv18446744073709551615 64)))) (or (and (= .cse0 (bvadd .cse1 ULTIMATE.start_main_~a~0)) .cse2 .cse3 .cse4 .cse5 .cse6 (= (bvadd ULTIMATE.start_main_~s~0 (bvmul .cse7 (_ bv18446744073709551615 64))) .cse8) .cse9) (and .cse3 .cse5 .cse6 (= ULTIMATE.start_main_~s~0 .cse10) (= .cse0 ULTIMATE.start_main_~a~0) .cse9 (= ULTIMATE.start_main_~t~0 .cse10)) (and .cse2 .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~a~0 (bvadd .cse8 .cse0)) .cse9 (= (bvadd (bvmul ULTIMATE.start_main_~t~0 (_ bv18446744073709551614 64)) .cse1 ULTIMATE.start_main_~s~0 .cse7) (_ bv0 64)))))) [2020-12-09 05:11:38,113 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-09 05:11:38,114 INFO L258 CegarLoopResult]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse10 ((_ sign_extend 32) (_ bv1 32))) (.cse7 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse2 (= (bvadd .cse10 (bvmul ULTIMATE.start_main_~a~0 .cse7)) ULTIMATE.start_main_~t~0)) (.cse3 (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32))) (.cse4 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (.cse5 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse6 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse8 (bvmul .cse10 (_ bv2 64))) (.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse9 (bvsle ULTIMATE.start_main_~n~0 (_ bv5 32))) (.cse1 (bvmul .cse10 (_ bv18446744073709551615 64)))) (or (and (= .cse0 (bvadd .cse1 ULTIMATE.start_main_~a~0)) .cse2 .cse3 .cse4 .cse5 .cse6 (= (bvadd ULTIMATE.start_main_~s~0 (bvmul .cse7 (_ bv18446744073709551615 64))) .cse8) .cse9) (and .cse3 .cse5 .cse6 (= ULTIMATE.start_main_~s~0 .cse10) (= .cse0 ULTIMATE.start_main_~a~0) .cse9 (= ULTIMATE.start_main_~t~0 .cse10)) (and .cse2 .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~a~0 (bvadd .cse8 .cse0)) .cse9 (= (bvadd (bvmul ULTIMATE.start_main_~t~0 (_ bv18446744073709551614 64)) .cse1 ULTIMATE.start_main_~s~0 .cse7) (_ bv0 64)))))) [2020-12-09 05:11:38,114 INFO L262 CegarLoopResult]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-09 05:11:38,114 INFO L258 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= .cse1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse3 (bvmul ULTIMATE.start_main_~t~0 .cse2)) (.cse4 ((_ sign_extend 32) (_ bv4 32))) (.cse7 (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)) (.cse8 (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse5 (bvmul .cse0 .cse0)) (.cse9 (bvmul .cse0 ULTIMATE.start_main_~a~0))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse2)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (or (= .cse1 (bvadd (bvmul .cse3 (_ bv3 64)) .cse0 (bvneg (bvmul .cse4 (let ((.cse6 (bvadd .cse0 ULTIMATE.start_main_~a~0))) (bvadd .cse5 (bvmul .cse6 .cse6) (bvmul (bvmul .cse6 .cse0) (_ bv2 64)))))) (bvmul (bvmul .cse2 .cse2) (_ bv2 64)) .cse7)) (not (= (bvadd ULTIMATE.start_main_~t~0 .cse2 ULTIMATE.start_main_~s~0) (bvadd .cse8 (bvmul .cse5 (_ bv4 64)) (bvmul .cse9 (_ bv4 64)))))) (= .cse1 (bvadd .cse3 .cse0 (bvneg (bvmul .cse4 ULTIMATE.start_main_~s~0)) .cse7)) (= ULTIMATE.start_main_~s~0 (bvadd .cse8 .cse5 (bvmul .cse9 (_ bv2 64)))) (or (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond) (= (_ bv0 32) ULTIMATE.start_assume_abort_if_not_~cond))))))) [2020-12-09 05:11:38,114 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 05:11:38,114 INFO L262 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-09 05:11:38,114 INFO L258 CegarLoopResult]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse1 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse2 ((_ sign_extend 32) (_ bv0 32))) (.cse3 (bvmul ULTIMATE.start_main_~t~0 .cse1)) (.cse4 ((_ sign_extend 32) (_ bv4 32))) (.cse7 (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)) (.cse8 (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse5 (bvmul .cse0 .cse0)) (.cse9 (bvmul .cse0 ULTIMATE.start_main_~a~0))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (or (= .cse2 (bvadd (bvmul .cse3 (_ bv3 64)) .cse0 (bvneg (bvmul .cse4 (let ((.cse6 (bvadd .cse0 ULTIMATE.start_main_~a~0))) (bvadd .cse5 (bvmul .cse6 .cse6) (bvmul (bvmul .cse6 .cse0) (_ bv2 64)))))) (bvmul (bvmul .cse1 .cse1) (_ bv2 64)) .cse7)) (not (= (bvadd ULTIMATE.start_main_~t~0 .cse1 ULTIMATE.start_main_~s~0) (bvadd .cse8 (bvmul .cse5 (_ bv4 64)) (bvmul .cse9 (_ bv4 64)))))) (= .cse2 (bvadd .cse3 .cse0 (bvneg (bvmul .cse4 ULTIMATE.start_main_~s~0)) .cse7)) (or (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond) (= (_ bv0 32) ULTIMATE.start_assume_abort_if_not_~cond)) (= ULTIMATE.start_main_~s~0 (bvadd .cse8 .cse5 (bvmul .cse9 (_ bv2 64))))))))) [2020-12-09 05:11:38,114 INFO L262 CegarLoopResult]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-09 05:11:38,114 INFO L265 CegarLoopResult]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-12-09 05:11:38,114 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 05:11:38,114 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-09 05:11:38,114 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-09 05:11:38,114 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-09 05:11:38,115 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-09 05:11:38,115 INFO L262 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-09 05:11:38,115 INFO L262 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-09 05:11:38,115 INFO L262 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-09 05:11:38,115 INFO L258 CegarLoopResult]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv1 32))) (.cse9 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse6 (= (bvadd .cse2 (bvmul ULTIMATE.start_main_~a~0 .cse9)) ULTIMATE.start_main_~t~0)) (.cse0 (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32))) (.cse7 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (.cse8 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse10 (bvmul .cse2 (_ bv2 64))) (.cse3 ((_ sign_extend 32) (_ bv0 32))) (.cse4 (bvsle ULTIMATE.start_main_~n~0 (_ bv5 32))) (.cse5 (bvmul .cse2 (_ bv18446744073709551615 64)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~s~0 .cse2) (= .cse3 ULTIMATE.start_main_~a~0) .cse4 (= ULTIMATE.start_main_~t~0 .cse2)) (and (= .cse3 (bvadd .cse5 ULTIMATE.start_main_~a~0)) .cse6 .cse0 .cse7 .cse8 .cse1 (= (bvadd ULTIMATE.start_main_~s~0 (bvmul .cse9 (_ bv18446744073709551615 64))) .cse10) .cse4) (and .cse6 .cse0 .cse7 .cse8 .cse1 (= ULTIMATE.start_main_~a~0 (bvadd .cse10 .cse3)) .cse4 (= (bvadd (bvmul ULTIMATE.start_main_~t~0 (_ bv18446744073709551614 64)) .cse5 ULTIMATE.start_main_~s~0 .cse9) (_ bv0 64)))))) [2020-12-09 05:11:38,115 INFO L262 CegarLoopResult]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2020-12-09 05:11:38,115 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 05:11:38,128 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:796) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:240) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 05:11:38,131 INFO L168 Benchmark]: Toolchain (without parser) took 463500.43 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 40.6 MB in the beginning and 42.6 MB in the end (delta: -2.0 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:11:38,131 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 43.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:11:38,132 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.17 ms. Allocated memory is still 60.8 MB. Free memory was 40.4 MB in the beginning and 30.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 05:11:38,132 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.19 ms. Allocated memory is still 60.8 MB. Free memory was 29.8 MB in the beginning and 45.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:11:38,133 INFO L168 Benchmark]: Boogie Preprocessor took 27.57 ms. Allocated memory is still 60.8 MB. Free memory was 45.4 MB in the beginning and 44.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:11:38,133 INFO L168 Benchmark]: RCFGBuilder took 511.56 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 29.3 MB in the end (delta: 14.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:11:38,133 INFO L168 Benchmark]: TraceAbstraction took 462767.82 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 28.8 MB in the beginning and 42.6 MB in the end (delta: -13.8 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2020-12-09 05:11:38,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 43.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 158.17 ms. Allocated memory is still 60.8 MB. Free memory was 40.4 MB in the beginning and 30.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.19 ms. Allocated memory is still 60.8 MB. Free memory was 29.8 MB in the beginning and 45.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.57 ms. Allocated memory is still 60.8 MB. Free memory was 45.4 MB in the beginning and 44.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 511.56 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 29.3 MB in the end (delta: 14.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 462767.82 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 28.8 MB in the beginning and 42.6 MB in the end (delta: -13.8 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((((~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 18446744073709551615bv64), a) && ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32))) == t) && ~bvsge32(n, 0bv32)) && ~bvadd16(cond, 4294967295bv32) == 0bv32) && 1bv32 == cond) && ~bvadd16(s, ~bvmul64(~sign_extendFrom8To32(2bv32), 18446744073709551615bv64)) == ~bvmul64(~sign_extendFrom8To32(1bv32), 2bv64)) && ~bvsle64(n, 5bv32)) || ((((((~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32))) == t && ~bvsge32(n, 0bv32)) && ~bvadd16(cond, 4294967295bv32) == 0bv32) && 1bv32 == cond) && a == ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 2bv64), ~sign_extendFrom8To32(0bv32))) && ~bvsle64(n, 5bv32)) && ~bvadd16(~bvmul64(t, 18446744073709551614bv64), ~bvmul64(~sign_extendFrom8To32(1bv32), 18446744073709551615bv64), s, ~sign_extendFrom8To32(2bv32)) == 0bv64)) || ((((((~bvsge32(n, 0bv32) && ~bvadd16(cond, 4294967295bv32) == 0bv32) && 1bv32 == cond) && s == ~sign_extendFrom8To32(1bv32)) && ~sign_extendFrom8To32(0bv32) == a) && ~bvsle64(n, 5bv32)) && t == ~sign_extendFrom8To32(1bv32)) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...