./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8 --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 1e5fcac2800fa481c87e1ba666bedec539f533fb ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8 --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 1e5fcac2800fa481c87e1ba666bedec539f533fb ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.1-dev-4e77c04 [2021-10-13 07:30:04,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:30:04,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:30:04,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:30:04,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:30:04,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:30:04,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:30:04,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:30:04,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:30:04,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:30:04,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:30:04,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:30:04,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:30:04,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:30:04,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:30:04,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:30:04,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:30:04,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:30:04,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:30:04,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:30:04,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:30:04,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:30:04,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:30:04,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:30:04,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:30:04,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:30:04,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:30:04,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:30:04,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:30:04,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:30:04,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:30:04,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:30:04,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:30:04,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:30:04,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:30:04,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:30:04,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:30:04,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:30:04,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:30:04,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:30:04,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:30:04,360 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:30:04,413 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:30:04,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:30:04,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:30:04,415 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:30:04,415 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:30:04,416 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:30:04,416 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:30:04,416 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:30:04,416 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:30:04,416 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:30:04,418 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:30:04,418 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:30:04,418 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:30:04,418 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:30:04,419 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:30:04,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:30:04,420 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:30:04,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:30:04,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:30:04,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:30:04,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:30:04,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:30:04,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:30:04,421 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:30:04,421 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:30:04,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:30:04,422 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:30:04,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:30:04,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:30:04,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:30:04,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:30:04,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:30:04,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:30:04,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:30:04,423 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:30:04,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:30:04,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:30:04,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:30:04,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:30:04,424 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e5fcac2800fa481c87e1ba666bedec539f533fb [2021-10-13 07:30:04,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:30:04,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:30:04,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:30:04,777 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:30:04,778 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:30:04,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c [2021-10-13 07:30:04,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/data/ec419e768/71a69ce8d4ea49b892fd1a6c871af17f/FLAGba52aef48 [2021-10-13 07:30:05,362 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:30:05,362 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c [2021-10-13 07:30:05,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/data/ec419e768/71a69ce8d4ea49b892fd1a6c871af17f/FLAGba52aef48 [2021-10-13 07:30:05,726 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/data/ec419e768/71a69ce8d4ea49b892fd1a6c871af17f [2021-10-13 07:30:05,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:30:05,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:30:05,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:30:05,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:30:05,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:30:05,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:30:05" (1/1) ... [2021-10-13 07:30:05,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52181018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:05, skipping insertion in model container [2021-10-13 07:30:05,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:30:05" (1/1) ... [2021-10-13 07:30:05,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:30:05,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:30:05,925 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c[520,533] [2021-10-13 07:30:05,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:30:05,984 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:30:06,007 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c[520,533] [2021-10-13 07:30:06,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:30:06,048 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:30:06,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:06 WrapperNode [2021-10-13 07:30:06,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:30:06,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:30:06,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:30:06,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:30:06,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:06" (1/1) ... [2021-10-13 07:30:06,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:06" (1/1) ... [2021-10-13 07:30:06,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:30:06,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:30:06,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:30:06,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:30:06,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:06" (1/1) ... [2021-10-13 07:30:06,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:06" (1/1) ... [2021-10-13 07:30:06,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:06" (1/1) ... [2021-10-13 07:30:06,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:06" (1/1) ... [2021-10-13 07:30:06,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:06" (1/1) ... [2021-10-13 07:30:06,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:06" (1/1) ... [2021-10-13 07:30:06,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:06" (1/1) ... [2021-10-13 07:30:06,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:30:06,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:30:06,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:30:06,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:30:06,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:06" (1/1) ... [2021-10-13 07:30:06,146 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:30:06,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:30:06,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:30:06,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:30:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:30:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:30:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:30:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:30:06,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:30:06,525 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-13 07:30:06,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:30:06 BoogieIcfgContainer [2021-10-13 07:30:06,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:30:06,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:30:06,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:30:06,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:30:06,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:30:05" (1/3) ... [2021-10-13 07:30:06,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477e0aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:30:06, skipping insertion in model container [2021-10-13 07:30:06,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:06" (2/3) ... [2021-10-13 07:30:06,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477e0aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:30:06, skipping insertion in model container [2021-10-13 07:30:06,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:30:06" (3/3) ... [2021-10-13 07:30:06,537 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound1.c [2021-10-13 07:30:06,542 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:30:06,543 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 07:30:06,597 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:30:06,604 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:30:06,604 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 07:30:06,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:06,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:30:06,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:30:06,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:30:06,664 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:30:06,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:30:06,669 INFO L82 PathProgramCache]: Analyzing trace with hash 3950384, now seen corresponding path program 1 times [2021-10-13 07:30:06,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:30:06,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993282451] [2021-10-13 07:30:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:06,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:30:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:07,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:30:07,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993282451] [2021-10-13 07:30:07,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993282451] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:30:07,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:30:07,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:30:07,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173283108] [2021-10-13 07:30:07,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:30:07,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:30:07,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:30:07,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:30:07,092 INFO L87 Difference]: Start difference. First operand has 28 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:07,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:30:07,188 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2021-10-13 07:30:07,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:30:07,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 07:30:07,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:30:07,198 INFO L225 Difference]: With dead ends: 78 [2021-10-13 07:30:07,198 INFO L226 Difference]: Without dead ends: 47 [2021-10-13 07:30:07,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:30:07,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-13 07:30:07,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2021-10-13 07:30:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:07,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-10-13 07:30:07,240 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 4 [2021-10-13 07:30:07,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:30:07,241 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-10-13 07:30:07,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:07,242 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-10-13 07:30:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:30:07,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:30:07,243 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:30:07,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:30:07,244 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:30:07,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:30:07,248 INFO L82 PathProgramCache]: Analyzing trace with hash -498492525, now seen corresponding path program 1 times [2021-10-13 07:30:07,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:30:07,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731527757] [2021-10-13 07:30:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:07,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:30:07,278 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:30:07,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212924062] [2021-10-13 07:30:07,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:07,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:30:07,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:30:07,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:30:07,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:30:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:07,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:30:07,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:07,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:07,565 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:30:07,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731527757] [2021-10-13 07:30:07,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:30:07,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212924062] [2021-10-13 07:30:07,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212924062] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:30:07,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:30:07,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:30:07,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324844481] [2021-10-13 07:30:07,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:30:07,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:30:07,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:30:07,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:30:07,572 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:30:07,676 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-10-13 07:30:07,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:30:07,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:30:07,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:30:07,679 INFO L225 Difference]: With dead ends: 47 [2021-10-13 07:30:07,679 INFO L226 Difference]: Without dead ends: 43 [2021-10-13 07:30:07,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:30:07,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-13 07:30:07,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2021-10-13 07:30:07,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-10-13 07:30:07,701 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 6 [2021-10-13 07:30:07,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:30:07,702 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-10-13 07:30:07,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:07,703 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-10-13 07:30:07,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:30:07,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:30:07,705 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:30:07,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:30:07,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:30:07,933 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:30:07,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:30:07,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1985176726, now seen corresponding path program 1 times [2021-10-13 07:30:07,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:30:07,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509440505] [2021-10-13 07:30:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:07,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:30:07,956 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:30:07,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528938118] [2021-10-13 07:30:07,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:07,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:30:07,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:30:07,971 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:30:07,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:30:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:08,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:30:08,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:08,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:08,149 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:30:08,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509440505] [2021-10-13 07:30:08,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:30:08,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528938118] [2021-10-13 07:30:08,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528938118] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:30:08,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:30:08,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:30:08,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982747404] [2021-10-13 07:30:08,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:30:08,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:30:08,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:30:08,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:30:08,152 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:08,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:30:08,338 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-13 07:30:08,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:30:08,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:30:08,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:30:08,339 INFO L225 Difference]: With dead ends: 39 [2021-10-13 07:30:08,339 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 07:30:08,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:30:08,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 07:30:08,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-13 07:30:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.173913043478261) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-13 07:30:08,345 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 8 [2021-10-13 07:30:08,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:30:08,345 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-13 07:30:08,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:08,345 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-13 07:30:08,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:30:08,346 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:30:08,346 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:30:08,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:30:08,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-13 07:30:08,557 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:30:08,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:30:08,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1294888167, now seen corresponding path program 1 times [2021-10-13 07:30:08,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:30:08,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614508561] [2021-10-13 07:30:08,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:08,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:30:08,573 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:30:08,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428286972] [2021-10-13 07:30:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:08,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:30:08,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:30:08,578 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:30:08,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:30:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:08,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:30:08,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:08,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:30:08,848 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:30:08,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614508561] [2021-10-13 07:30:08,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:30:08,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428286972] [2021-10-13 07:30:08,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428286972] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:30:08,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [157185274] [2021-10-13 07:30:08,881 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-13 07:30:08,882 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:30:08,887 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:30:08,894 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:30:08,895 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:30:08,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:30:08,934 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:30:08,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:30:08,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:30:08,939 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:30:08,940 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:30:08,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:30:08,946 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-13 07:30:09,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:30:09,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:30:09,009 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:30:09,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:30:09,015 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:30:09,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:30:09,016 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:30:09,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:30:09,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:30:09,023 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:30:09,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:30:09,025 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:30:09,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:30:09,027 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:30:09,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:30:09,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:30:09,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:30:09,117 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 07:30:09,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 07:30:09,119 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:30:09,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:30:09,124 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:30:09,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:30:09,130 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 07:30:09,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:30:09,197 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:30:09,203 INFO L180 QuantifierPusher]: treesize reduction 8, result has 94.0 percent of original size [2021-10-13 07:30:09,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-13 07:30:09,209 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:30:09,209 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:444, output treesize:125 [2021-10-13 07:30:09,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-13 07:30:09,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:30:09,437 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_17| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-10-13 07:30:09,441 INFO L168 Benchmark]: Toolchain (without parser) took 3706.83 ms. Allocated memory was 79.7 MB in the beginning and 130.0 MB in the end (delta: 50.3 MB). Free memory was 43.3 MB in the beginning and 89.7 MB in the end (delta: -46.4 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:30:09,441 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 59.3 MB in the beginning and 59.2 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:30:09,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.55 ms. Allocated memory was 79.7 MB in the beginning and 107.0 MB in the end (delta: 27.3 MB). Free memory was 43.2 MB in the beginning and 83.0 MB in the end (delta: -39.9 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:30:09,443 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.22 ms. Allocated memory is still 107.0 MB. Free memory was 83.0 MB in the beginning and 81.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:30:09,443 INFO L168 Benchmark]: Boogie Preprocessor took 34.52 ms. Allocated memory is still 107.0 MB. Free memory was 81.5 MB in the beginning and 80.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:30:09,444 INFO L168 Benchmark]: RCFGBuilder took 395.39 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 67.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:30:09,445 INFO L168 Benchmark]: TraceAbstraction took 2909.82 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 67.2 MB in the beginning and 89.7 MB in the end (delta: -22.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:30:09,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 59.3 MB in the beginning and 59.2 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.55 ms. Allocated memory was 79.7 MB in the beginning and 107.0 MB in the end (delta: 27.3 MB). Free memory was 43.2 MB in the beginning and 83.0 MB in the end (delta: -39.9 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.22 ms. Allocated memory is still 107.0 MB. Free memory was 83.0 MB in the beginning and 81.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.52 ms. Allocated memory is still 107.0 MB. Free memory was 81.5 MB in the beginning and 80.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 395.39 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 67.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2909.82 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 67.2 MB in the beginning and 89.7 MB in the end (delta: -22.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_17| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_17|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:30:09,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:30:11,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:30:11,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:30:11,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:30:11,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:30:11,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:30:11,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:30:12,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:30:12,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:30:12,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:30:12,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:30:12,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:30:12,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:30:12,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:30:12,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:30:12,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:30:12,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:30:12,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:30:12,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:30:12,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:30:12,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:30:12,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:30:12,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:30:12,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:30:12,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:30:12,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:30:12,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:30:12,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:30:12,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:30:12,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:30:12,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:30:12,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:30:12,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:30:12,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:30:12,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:30:12,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:30:12,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:30:12,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:30:12,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:30:12,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:30:12,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:30:12,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:30:12,091 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:30:12,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:30:12,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:30:12,095 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:30:12,095 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:30:12,096 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:30:12,096 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:30:12,096 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:30:12,096 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:30:12,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:30:12,099 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:30:12,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:30:12,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:30:12,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:30:12,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:30:12,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:30:12,101 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:30:12,101 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:30:12,101 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:30:12,101 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:30:12,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:30:12,102 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:30:12,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:30:12,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:30:12,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:30:12,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:30:12,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:30:12,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:30:12,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:30:12,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:30:12,104 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:30:12,104 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:30:12,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:30:12,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:30:12,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:30:12,106 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e5fcac2800fa481c87e1ba666bedec539f533fb [2021-10-13 07:30:12,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:30:12,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:30:12,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:30:12,575 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:30:12,576 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:30:12,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c [2021-10-13 07:30:12,653 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/data/24c3ebbca/f85827cff4014a9ca9b8d07973b6542f/FLAG719f26850 [2021-10-13 07:30:13,245 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:30:13,246 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c [2021-10-13 07:30:13,255 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/data/24c3ebbca/f85827cff4014a9ca9b8d07973b6542f/FLAG719f26850 [2021-10-13 07:30:13,597 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/data/24c3ebbca/f85827cff4014a9ca9b8d07973b6542f [2021-10-13 07:30:13,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:30:13,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:30:13,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:30:13,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:30:13,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:30:13,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:30:13" (1/1) ... [2021-10-13 07:30:13,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e1eae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:13, skipping insertion in model container [2021-10-13 07:30:13,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:30:13" (1/1) ... [2021-10-13 07:30:13,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:30:13,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:30:13,828 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c[520,533] [2021-10-13 07:30:13,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:30:13,883 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:30:13,899 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c[520,533] [2021-10-13 07:30:13,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:30:13,941 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:30:13,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:13 WrapperNode [2021-10-13 07:30:13,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:30:13,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:30:13,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:30:13,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:30:13,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:13" (1/1) ... [2021-10-13 07:30:13,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:13" (1/1) ... [2021-10-13 07:30:14,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:30:14,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:30:14,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:30:14,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:30:14,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:13" (1/1) ... [2021-10-13 07:30:14,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:13" (1/1) ... [2021-10-13 07:30:14,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:13" (1/1) ... [2021-10-13 07:30:14,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:13" (1/1) ... [2021-10-13 07:30:14,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:13" (1/1) ... [2021-10-13 07:30:14,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:13" (1/1) ... [2021-10-13 07:30:14,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:13" (1/1) ... [2021-10-13 07:30:14,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:30:14,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:30:14,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:30:14,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:30:14,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:13" (1/1) ... [2021-10-13 07:30:14,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:30:14,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:30:14,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:30:14,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:30:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:30:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:30:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:30:14,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:30:14,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:30:14,842 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-13 07:30:14,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:30:14 BoogieIcfgContainer [2021-10-13 07:30:14,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:30:14,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:30:14,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:30:14,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:30:14,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:30:13" (1/3) ... [2021-10-13 07:30:14,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5854b119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:30:14, skipping insertion in model container [2021-10-13 07:30:14,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:30:13" (2/3) ... [2021-10-13 07:30:14,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5854b119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:30:14, skipping insertion in model container [2021-10-13 07:30:14,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:30:14" (3/3) ... [2021-10-13 07:30:14,852 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound1.c [2021-10-13 07:30:14,858 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:30:14,858 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 07:30:14,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:30:14,910 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:30:14,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 07:30:14,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:30:14,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:30:14,943 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:30:14,943 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:30:14,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:30:14,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-13 07:30:14,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:30:14,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944868527] [2021-10-13 07:30:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:14,963 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:30:14,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:30:14,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:30:14,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:30:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:15,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:30:15,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:15,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:15,169 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:30:15,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944868527] [2021-10-13 07:30:15,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944868527] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:30:15,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:30:15,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:30:15,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582661315] [2021-10-13 07:30:15,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:30:15,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:30:15,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:30:15,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:30:15,201 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:15,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:30:15,222 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-10-13 07:30:15,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:30:15,224 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 07:30:15,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:30:15,234 INFO L225 Difference]: With dead ends: 63 [2021-10-13 07:30:15,234 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 07:30:15,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:30:15,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 07:30:15,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-13 07:30:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-13 07:30:15,278 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-10-13 07:30:15,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:30:15,279 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-13 07:30:15,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:15,280 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-13 07:30:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:30:15,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:30:15,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:30:15,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:30:15,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:30:15,493 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:30:15,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:30:15,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-13 07:30:15,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:30:15,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601230347] [2021-10-13 07:30:15,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:15,504 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:30:15,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:30:15,506 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:30:15,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:30:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:15,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:30:15,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:15,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:15,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:15,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:15,887 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:30:15,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601230347] [2021-10-13 07:30:15,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601230347] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:30:15,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:30:15,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:30:15,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030459568] [2021-10-13 07:30:15,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:30:15,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:30:15,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:30:15,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:30:15,894 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:30:16,505 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2021-10-13 07:30:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:30:16,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 07:30:16,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:30:16,515 INFO L225 Difference]: With dead ends: 50 [2021-10-13 07:30:16,515 INFO L226 Difference]: Without dead ends: 46 [2021-10-13 07:30:16,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 124.9ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:30:16,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-13 07:30:16,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 25. [2021-10-13 07:30:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:16,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-10-13 07:30:16,523 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 7 [2021-10-13 07:30:16,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:30:16,524 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-10-13 07:30:16,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:16,524 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-10-13 07:30:16,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:30:16,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:30:16,525 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:30:16,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 07:30:16,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:30:16,738 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:30:16,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:30:16,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-10-13 07:30:16,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:30:16,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382442761] [2021-10-13 07:30:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:16,740 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:30:16,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:30:16,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:30:16,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:30:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:16,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:30:16,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:17,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:18,260 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:30:18,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382442761] [2021-10-13 07:30:18,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382442761] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:30:18,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:30:18,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:30:18,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491208593] [2021-10-13 07:30:18,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:30:18,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:30:18,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:30:18,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:30:18,263 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:19,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:30:19,503 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2021-10-13 07:30:19,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:30:19,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 07:30:19,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:30:19,519 INFO L225 Difference]: With dead ends: 46 [2021-10-13 07:30:19,519 INFO L226 Difference]: Without dead ends: 42 [2021-10-13 07:30:19,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 683.2ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:30:19,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-13 07:30:19,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2021-10-13 07:30:19,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.1875) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:19,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-10-13 07:30:19,530 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 9 [2021-10-13 07:30:19,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:30:19,530 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-10-13 07:30:19,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:19,531 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-10-13 07:30:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:30:19,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:30:19,532 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:30:19,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:30:19,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:30:19,744 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:30:19,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:30:19,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-10-13 07:30:19,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:30:19,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419377890] [2021-10-13 07:30:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:19,746 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:30:19,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:30:19,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:30:19,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:30:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:19,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:30:19,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:20,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:21,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:30:21,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419377890] [2021-10-13 07:30:21,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419377890] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:30:21,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:30:21,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:30:21,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417482215] [2021-10-13 07:30:21,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:30:21,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:30:21,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:30:21,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:30:21,925 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:28,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:30:28,910 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2021-10-13 07:30:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:30:28,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 07:30:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:30:28,912 INFO L225 Difference]: With dead ends: 60 [2021-10-13 07:30:28,912 INFO L226 Difference]: Without dead ends: 48 [2021-10-13 07:30:28,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2641.3ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:30:28,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-13 07:30:28,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2021-10-13 07:30:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 42 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:28,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2021-10-13 07:30:28,923 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 11 [2021-10-13 07:30:28,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:30:28,923 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2021-10-13 07:30:28,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:28,924 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2021-10-13 07:30:28,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:30:28,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:30:28,925 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:30:28,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:30:29,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:30:29,152 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:30:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:30:29,153 INFO L82 PathProgramCache]: Analyzing trace with hash -583489763, now seen corresponding path program 1 times [2021-10-13 07:30:29,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:30:29,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254137912] [2021-10-13 07:30:29,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:29,155 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:30:29,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:30:29,156 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:30:29,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:30:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:29,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:30:29,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:29,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:33,281 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:30:33,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254137912] [2021-10-13 07:30:33,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254137912] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:30:33,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1741435715] [2021-10-13 07:30:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:33,282 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:30:33,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:30:33,290 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:30:33,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-13 07:30:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:33,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:30:33,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:33,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:35,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:35,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1741435715] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:30:35,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247496400] [2021-10-13 07:30:35,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:35,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:30:35,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:30:35,654 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:30:35,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 07:30:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:35,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:30:35,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:36,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:37,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247496400] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:30:37,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:30:37,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 5] total 9 [2021-10-13 07:30:37,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714614701] [2021-10-13 07:30:37,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:30:37,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:30:37,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:30:37,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:30:37,921 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:08,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:31:08,059 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2021-10-13 07:31:08,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 07:31:08,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 07:31:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:31:08,078 INFO L225 Difference]: With dead ends: 81 [2021-10-13 07:31:08,078 INFO L226 Difference]: Without dead ends: 73 [2021-10-13 07:31:08,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 9427.3ms TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2021-10-13 07:31:08,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-13 07:31:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 57. [2021-10-13 07:31:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.150943396226415) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2021-10-13 07:31:08,095 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 16 [2021-10-13 07:31:08,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:31:08,095 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2021-10-13 07:31:08,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:08,096 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2021-10-13 07:31:08,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:31:08,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:31:08,097 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 07:31:08,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:31:08,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:31:08,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-10-13 07:31:08,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:31:08,710 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:31:08,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:31:08,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 1 times [2021-10-13 07:31:08,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:31:08,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96563955] [2021-10-13 07:31:08,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:31:08,711 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:31:08,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:31:08,712 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:31:08,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:31:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:31:09,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:31:09,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:31:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:31:09,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:31:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:31:09,941 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:31:09,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96563955] [2021-10-13 07:31:09,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96563955] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:31:09,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [374642689] [2021-10-13 07:31:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:31:09,942 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:31:09,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:31:09,949 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:31:09,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-13 07:31:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:31:10,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:31:10,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:31:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:31:11,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:31:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 07:31:20,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [374642689] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:31:20,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613042651] [2021-10-13 07:31:20,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:31:20,985 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:31:20,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:31:20,986 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:31:20,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 07:31:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:31:21,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:31:21,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:31:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:31:22,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:31:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:31:31,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613042651] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:31:31,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:31:31,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 4, 8, 8] total 21 [2021-10-13 07:31:31,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996717638] [2021-10-13 07:31:31,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 07:31:31,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:31:31,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 07:31:31,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2021-10-13 07:31:31,696 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:33,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:31:33,709 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2021-10-13 07:31:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:31:33,710 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 07:31:33,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:31:33,710 INFO L225 Difference]: With dead ends: 57 [2021-10-13 07:31:33,711 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:31:33,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 13423.1ms TimeCoverageRelationStatistics Valid=186, Invalid=570, Unknown=0, NotChecked=0, Total=756 [2021-10-13 07:31:33,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:31:33,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:31:33,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:31:33,712 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-10-13 07:31:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:31:33,712 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:31:33,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:31:33,712 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:31:33,715 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:31:33,715 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:31:33,715 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:31:33,716 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:31:33,716 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:31:33,716 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:31:33,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-10-13 07:31:33,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:31:34,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:31:34,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:31:34,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:31:34,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:34,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:34,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:34,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:34,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:34,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:34,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:34,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:39,645 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 07:31:39,645 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 07:31:39,645 INFO L860 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true [2021-10-13 07:31:39,645 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:31:39,646 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 07:31:39,646 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:31:39,646 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:31:39,646 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 07:31:39,648 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-13 07:31:39,648 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv1 32))) (.cse7 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse0 (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse4 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse5 (bvsle ULTIMATE.start_main_~n~0 (_ bv1 32))) (.cse3 ((_ sign_extend 32) (_ bv0 32))) (.cse6 (= ULTIMATE.start_main_~t~0 (bvadd .cse2 (bvmul ULTIMATE.start_main_~a~0 .cse7))))) (or (and .cse0 .cse1 (= .cse2 ULTIMATE.start_main_~s~0) (= .cse3 ULTIMATE.start_main_~a~0) .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse4 (= (bvadd (bvmul (_ bv2 64) .cse2) .cse7) ULTIMATE.start_main_~s~0) .cse5 (= ULTIMATE.start_main_~a~0 (bvadd .cse3 .cse2)) .cse6)))) [2021-10-13 07:31:39,648 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-13 07:31:39,648 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-13 07:31:39,649 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse4 ((_ sign_extend 32) (_ bv1 32))) (.cse5 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse0 (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse2 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (.cse7 ((_ sign_extend 32) (_ bv0 32))) (.cse3 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse6 (bvsle ULTIMATE.start_main_~n~0 (_ bv1 32))) (.cse8 (= ULTIMATE.start_main_~t~0 (bvadd .cse4 (bvmul ULTIMATE.start_main_~a~0 .cse5))))) (or (and .cse0 .cse1 .cse2 .cse3 (= (bvadd (bvmul (_ bv2 64) .cse4) .cse5) ULTIMATE.start_main_~s~0) .cse6 (= ULTIMATE.start_main_~a~0 (bvadd .cse7 .cse4)) .cse8) (and .cse0 .cse1 .cse2 (= .cse4 ULTIMATE.start_main_~s~0) (= .cse7 ULTIMATE.start_main_~a~0) .cse3 .cse6 .cse8)))) [2021-10-13 07:31:39,649 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-13 07:31:39,649 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse4 ((_ sign_extend 32) (_ bv1 32))) (.cse5 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse0 (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse2 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (.cse7 ((_ sign_extend 32) (_ bv0 32))) (.cse3 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse6 (bvsle ULTIMATE.start_main_~n~0 (_ bv1 32))) (.cse8 (= ULTIMATE.start_main_~t~0 (bvadd .cse4 (bvmul ULTIMATE.start_main_~a~0 .cse5))))) (or (and .cse0 .cse1 .cse2 .cse3 (= (bvadd (bvmul (_ bv2 64) .cse4) .cse5) ULTIMATE.start_main_~s~0) .cse6 (= ULTIMATE.start_main_~a~0 (bvadd .cse7 .cse4)) .cse8) (and .cse0 .cse1 .cse2 (= .cse4 ULTIMATE.start_main_~s~0) (= .cse7 ULTIMATE.start_main_~a~0) .cse3 .cse6 .cse8)))) [2021-10-13 07:31:39,649 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-10-13 07:31:39,650 INFO L853 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv1 32))) (.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse3 ((_ sign_extend 32) (_ bv0 32))) (.cse0 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse4 (= ULTIMATE.start_main_~t~0 (bvadd .cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2))))) (or (and (or (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) .cse0 (= (bvadd (bvmul (_ bv2 64) .cse1) .cse2) ULTIMATE.start_main_~s~0) (= ULTIMATE.start_main_~a~0 (bvadd .cse3 .cse1)) .cse4) (and (= .cse1 ULTIMATE.start_main_~s~0) (= .cse3 ULTIMATE.start_main_~a~0) .cse0 .cse4)))) [2021-10-13 07:31:39,650 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:31:39,650 INFO L857 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-10-13 07:31:39,650 INFO L853 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 ((_ sign_extend 32) (_ bv2 32)))) (and (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) (bvmul ULTIMATE.start_main_~t~0 .cse1)) ((_ sign_extend 32) (_ bv0 32))) (= ULTIMATE.start_main_~t~0 (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1))))) [2021-10-13 07:31:39,650 INFO L857 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-10-13 07:31:39,651 INFO L860 garLoopResultBuilder]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2021-10-13 07:31:39,651 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 07:31:39,651 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-13 07:31:39,651 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-13 07:31:39,651 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-13 07:31:39,651 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-10-13 07:31:39,651 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-13 07:31:39,651 INFO L857 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-10-13 07:31:39,651 INFO L857 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-10-13 07:31:39,651 INFO L853 garLoopResultBuilder]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse2 ((_ sign_extend 32) (_ bv1 32))) (.cse5 ((_ sign_extend 32) (_ bv0 32))) (.cse4 (bvsle ULTIMATE.start_main_~n~0 (_ bv1 32)))) (or (let ((.cse3 ((_ sign_extend 32) (_ bv2 32)))) (and .cse0 .cse1 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= (bvadd (bvmul (_ bv2 64) .cse2) .cse3) ULTIMATE.start_main_~s~0) .cse4 (= ULTIMATE.start_main_~a~0 (bvadd .cse5 .cse2)) (= ULTIMATE.start_main_~t~0 (bvadd .cse2 (bvmul ULTIMATE.start_main_~a~0 .cse3))))) (and .cse0 (= .cse2 ULTIMATE.start_main_~t~0) .cse1 (= .cse2 ULTIMATE.start_main_~s~0) (= .cse5 ULTIMATE.start_main_~a~0) .cse4))) [2021-10-13 07:31:39,652 INFO L857 garLoopResultBuilder]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2021-10-13 07:31:39,652 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 07:31:39,656 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:31:39,674 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.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:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-10-13 07:31:39,677 INFO L168 Benchmark]: Toolchain (without parser) took 86071.91 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 35.0 MB in the beginning and 41.3 MB in the end (delta: -6.3 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:39,678 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 56.6 MB. Free memory is still 37.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:31:39,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.18 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 24.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:39,679 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.31 ms. Allocated memory is still 56.6 MB. Free memory was 24.3 MB in the beginning and 40.4 MB in the end (delta: -16.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:39,679 INFO L168 Benchmark]: Boogie Preprocessor took 26.02 ms. Allocated memory is still 56.6 MB. Free memory was 40.4 MB in the beginning and 39.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:31:39,680 INFO L168 Benchmark]: RCFGBuilder took 811.07 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 28.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:39,680 INFO L168 Benchmark]: TraceAbstraction took 84829.60 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 28.2 MB in the beginning and 41.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:39,683 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 56.6 MB. Free memory is still 37.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.18 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 24.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.31 ms. Allocated memory is still 56.6 MB. Free memory was 24.3 MB in the beginning and 40.4 MB in the end (delta: -16.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.02 ms. Allocated memory is still 56.6 MB. Free memory was 40.4 MB in the beginning and 39.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 811.07 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 28.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 84829.60 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 28.2 MB in the beginning and 41.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 84753.8ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 11.7ms, AutomataDifference: 41103.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 5319.8ms, InitialAbstractionConstructionTime: 22.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 99 SDtfs, 230 SDslu, 167 SDs, 0 SdLazy, 288 SolverSat, 194 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 29620.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 321 GetRequests, 254 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 26300.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=5, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 67.4ms AutomataMinimizationTime, 6 MinimizatonAttempts, 48 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 22 NumberOfFragments, 376 HoareAnnotationTreeSize, 8 FomulaSimplifications, 133 FormulaSimplificationTreeSizeReduction, 210.1ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 537 FormulaSimplificationTreeSizeReductionInter, 5103.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 86.7ms SsaConstructionTime, 1563.0ms SatisfiabilityAnalysisTime, 33603.4ms InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 3163 SizeOfPredicates, 37 NumberOfNonLiveVariables, 473 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 65/138 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((~bvsge32(n, 0bv32) && cond == 1bv32) && ~sign_extendFrom8To32(1bv32) == s) && ~sign_extendFrom8To32(0bv32) == a) && cond == 1bv32) && ~bvsle64(n, 1bv32)) && t == ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32)))) || ((((((~bvsge32(n, 0bv32) && cond == 1bv32) && cond == 1bv32) && ~bvadd16(~bvmul64(2bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(2bv32)) == s) && ~bvsle64(n, 1bv32)) && a == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32))) && t == ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32)))) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((~bvsge32(n, 0bv32) && cond == 1bv32) && cond == 1bv32) && ~bvadd16(~bvmul64(2bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(2bv32)) == s) && ~bvsle64(n, 1bv32)) && a == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32))) && t == ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32)))) || (((((~bvsge32(n, 0bv32) && ~sign_extendFrom8To32(1bv32) == t) && cond == 1bv32) && ~sign_extendFrom8To32(1bv32) == s) && ~sign_extendFrom8To32(0bv32) == a) && ~bvsle64(n, 1bv32)) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((~bvsge32(n, 0bv32) && cond == 1bv32) && !(cond == 0bv32)) && cond == 1bv32) && ~bvadd16(~bvmul64(2bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(2bv32)) == s) && ~bvsle64(n, 1bv32)) && a == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32))) && t == ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32)))) || (((((((~bvsge32(n, 0bv32) && cond == 1bv32) && !(cond == 0bv32)) && ~sign_extendFrom8To32(1bv32) == s) && ~sign_extendFrom8To32(0bv32) == a) && cond == 1bv32) && ~bvsle64(n, 1bv32)) && t == ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32)))) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((cond == 1bv32 || cond == 0bv32) && cond == 1bv32) && ~bvadd16(~bvmul64(2bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(2bv32)) == s) && a == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32))) && t == ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32)))) || (((~sign_extendFrom8To32(1bv32) == s && ~sign_extendFrom8To32(0bv32) == a) && cond == 1bv32) && t == ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32)))) - 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. [2021-10-13 07:31:39,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a349ebc-3e07-450e-b9aa-cdc6e8df26bf/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...