./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8 --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 d57b5e0932e2ae1d13ff96f4ee516144e471d697de2e183c71b602b9615c31f3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:54:36,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:54:36,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:54:36,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:54:36,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:54:36,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:54:36,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:54:36,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:54:36,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:54:36,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:54:36,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:54:36,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:54:36,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:54:36,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:54:36,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:54:36,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:54:36,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:54:36,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:54:36,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:54:36,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:54:36,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:54:36,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:54:36,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:54:36,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:54:36,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:54:36,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:54:36,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:54:36,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:54:36,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:54:36,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:54:36,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:54:36,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:54:36,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:54:36,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:54:36,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:54:36,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:54:36,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:54:36,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:54:36,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:54:36,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:54:36,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:54:36,638 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:54:36,692 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:54:36,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:54:36,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:54:36,695 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:54:36,695 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:54:36,695 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:54:36,696 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:54:36,696 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:54:36,704 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:54:36,704 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:54:36,706 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:54:36,706 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:54:36,706 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:54:36,706 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:54:36,707 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:54:36,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:54:36,708 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:54:36,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:54:36,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:54:36,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:54:36,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:54:36,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:54:36,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:54:36,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:54:36,710 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:54:36,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:54:36,710 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:54:36,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:54:36,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:54:36,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:54:36,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:54:36,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:54:36,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:54:36,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:54:36,713 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:54:36,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:54:36,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:54:36,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:54:36,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:54:36,714 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_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d57b5e0932e2ae1d13ff96f4ee516144e471d697de2e183c71b602b9615c31f3 [2021-11-07 01:54:37,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:54:37,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:54:37,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:54:37,112 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:54:37,113 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:54:37,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i [2021-11-07 01:54:37,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/data/db7c716b7/3c22e2dacdc948cebe78b7a17cf8556e/FLAG98097faf7 [2021-11-07 01:54:37,857 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:54:37,857 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i [2021-11-07 01:54:37,881 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/data/db7c716b7/3c22e2dacdc948cebe78b7a17cf8556e/FLAG98097faf7 [2021-11-07 01:54:38,185 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/data/db7c716b7/3c22e2dacdc948cebe78b7a17cf8556e [2021-11-07 01:54:38,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:54:38,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:54:38,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:54:38,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:54:38,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:54:38,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:54:38" (1/1) ... [2021-11-07 01:54:38,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6db42e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:38, skipping insertion in model container [2021-11-07 01:54:38,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:54:38" (1/1) ... [2021-11-07 01:54:38,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:54:38,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:54:38,461 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_efb5ef77-9e82-4a67-b7b6-80c419d08651/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i[948,961] [2021-11-07 01:54:38,480 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1720) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1430) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:729) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1381) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3247) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2321) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) 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) [2021-11-07 01:54:38,488 INFO L168 Benchmark]: Toolchain (without parser) took 294.14 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 57.5 MB in the beginning and 95.4 MB in the end (delta: -38.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:54:38,489 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory is still 44.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:54:38,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.32 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 57.3 MB in the beginning and 95.4 MB in the end (delta: -38.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:54:38,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory is still 44.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.32 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 57.3 MB in the beginning and 95.4 MB in the end (delta: -38.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8 --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 d57b5e0932e2ae1d13ff96f4ee516144e471d697de2e183c71b602b9615c31f3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:54:40,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:54:41,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:54:41,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:54:41,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:54:41,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:54:41,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:54:41,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:54:41,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:54:41,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:54:41,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:54:41,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:54:41,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:54:41,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:54:41,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:54:41,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:54:41,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:54:41,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:54:41,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:54:41,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:54:41,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:54:41,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:54:41,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:54:41,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:54:41,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:54:41,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:54:41,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:54:41,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:54:41,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:54:41,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:54:41,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:54:41,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:54:41,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:54:41,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:54:41,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:54:41,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:54:41,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:54:41,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:54:41,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:54:41,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:54:41,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:54:41,099 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:54:41,132 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:54:41,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:54:41,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:54:41,134 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:54:41,135 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:54:41,135 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:54:41,135 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:54:41,135 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:54:41,136 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:54:41,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:54:41,137 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:54:41,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:54:41,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:54:41,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:54:41,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:54:41,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:54:41,139 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:54:41,139 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:54:41,140 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:54:41,140 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:54:41,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:54:41,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:54:41,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:54:41,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:54:41,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:54:41,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:54:41,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:54:41,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:54:41,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:54:41,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:54:41,143 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:54:41,144 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:54:41,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:54:41,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:54:41,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:54:41,145 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_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d57b5e0932e2ae1d13ff96f4ee516144e471d697de2e183c71b602b9615c31f3 [2021-11-07 01:54:41,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:54:41,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:54:41,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:54:41,646 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:54:41,647 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:54:41,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i [2021-11-07 01:54:41,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/data/8f9ce4988/fcd6170c384d47d1856adcf3673c378f/FLAGbb75c6f46 [2021-11-07 01:54:42,446 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:54:42,447 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i [2021-11-07 01:54:42,466 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/data/8f9ce4988/fcd6170c384d47d1856adcf3673c378f/FLAGbb75c6f46 [2021-11-07 01:54:42,793 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/data/8f9ce4988/fcd6170c384d47d1856adcf3673c378f [2021-11-07 01:54:42,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:54:42,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:54:42,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:54:42,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:54:42,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:54:42,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:54:42" (1/1) ... [2021-11-07 01:54:42,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d7a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:42, skipping insertion in model container [2021-11-07 01:54:42,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:54:42" (1/1) ... [2021-11-07 01:54:42,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:54:42,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:54:43,046 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_efb5ef77-9e82-4a67-b7b6-80c419d08651/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i[948,961] [2021-11-07 01:54:43,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:54:43,117 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:54:43,140 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_efb5ef77-9e82-4a67-b7b6-80c419d08651/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i[948,961] [2021-11-07 01:54:43,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:54:43,222 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:54:43,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:43 WrapperNode [2021-11-07 01:54:43,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:54:43,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:54:43,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:54:43,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:54:43,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:43" (1/1) ... [2021-11-07 01:54:43,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:43" (1/1) ... [2021-11-07 01:54:43,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:54:43,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:54:43,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:54:43,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:54:43,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:43" (1/1) ... [2021-11-07 01:54:43,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:43" (1/1) ... [2021-11-07 01:54:43,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:43" (1/1) ... [2021-11-07 01:54:43,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:43" (1/1) ... [2021-11-07 01:54:43,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:43" (1/1) ... [2021-11-07 01:54:43,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:43" (1/1) ... [2021-11-07 01:54:43,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:43" (1/1) ... [2021-11-07 01:54:43,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:54:43,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:54:43,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:54:43,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:54:43,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:43" (1/1) ... [2021-11-07 01:54:43,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:54:43,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:54:43,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:54:43,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:54:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:54:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:54:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:54:43,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:54:46,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:54:46,851 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-11-07 01:54:46,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:54:46 BoogieIcfgContainer [2021-11-07 01:54:46,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:54:46,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:54:46,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:54:46,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:54:46,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:54:42" (1/3) ... [2021-11-07 01:54:46,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a265e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:54:46, skipping insertion in model container [2021-11-07 01:54:46,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:43" (2/3) ... [2021-11-07 01:54:46,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a265e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:54:46, skipping insertion in model container [2021-11-07 01:54:46,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:54:46" (3/3) ... [2021-11-07 01:54:46,864 INFO L111 eAbstractionObserver]: Analyzing ICFG knuth_valuebound10.i [2021-11-07 01:54:46,871 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:54:46,872 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 01:54:46,996 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:54:47,014 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:54:47,014 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 01:54:47,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 33 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:47,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:54:47,052 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:54:47,053 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:54:47,054 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:54:47,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:54:47,062 INFO L85 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-11-07 01:54:47,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:54:47,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751830993] [2021-11-07 01:54:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:54:47,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:54:47,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:54:47,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:54:47,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:54:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:54:47,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:54:47,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:54:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:54:47,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:54:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:54:47,942 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:54:47,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751830993] [2021-11-07 01:54:47,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751830993] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:54:47,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:54:47,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:54:47,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632276839] [2021-11-07 01:54:47,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:54:47,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:54:47,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:54:47,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:54:47,971 INFO L87 Difference]: Start difference. First operand has 34 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 33 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:47,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:54:47,996 INFO L93 Difference]: Finished difference Result 65 states and 90 transitions. [2021-11-07 01:54:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:54:47,997 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2021-11-07 01:54:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:54:48,037 INFO L225 Difference]: With dead ends: 65 [2021-11-07 01:54:48,038 INFO L226 Difference]: Without dead ends: 30 [2021-11-07 01:54:48,043 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:54:48,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-07 01:54:48,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-07 01:54:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-11-07 01:54:48,125 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2021-11-07 01:54:48,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:54:48,126 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-11-07 01:54:48,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:48,127 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-11-07 01:54:48,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:54:48,128 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:54:48,128 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:54:48,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:54:48,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:54:48,353 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:54:48,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:54:48,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-11-07 01:54:48,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:54:48,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828027037] [2021-11-07 01:54:48,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:54:48,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:54:48,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:54:48,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:54:48,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:54:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:54:49,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:54:49,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:55:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:55:03,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:55:10,819 WARN L860 $PredicateComparison]: unable to prove that (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (let ((.cse3 (bvadd c_ULTIMATE.start_main_~a~0 (_ bv4294967294 32)))) (let ((.cse1 (bvudiv c_ULTIMATE.start_main_~n~0 .cse3)) (.cse0 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (.cse2 (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (bvadd (bvmul (_ bv4 32) (bvmul .cse0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv4 32) (bvmul .cse1 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvmul .cse2 (_ bv4 32)) c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvadd (bvmul .cse1 (_ bv8 32)) (bvmul .cse0 (_ bv8 32))) c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv8 32) .cse2) (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse3) c_ULTIMATE.start_main_~a~0)))))) is different from true [2021-11-07 01:55:19,682 WARN L860 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (let ((.cse3 (bvadd c_ULTIMATE.start_main_~a~0 (_ bv4294967294 32)))) (let ((.cse1 (bvudiv c_ULTIMATE.start_main_~n~0 .cse3)) (.cse0 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (.cse2 (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (bvadd (bvmul (_ bv4 32) (bvmul .cse0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv4 32) (bvmul .cse1 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvmul .cse2 (_ bv4 32)) c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvadd (bvmul .cse1 (_ bv8 32)) (bvmul .cse0 (_ bv8 32))) c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv8 32) .cse2) (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse3) c_ULTIMATE.start_main_~a~0))))))) is different from true [2021-11-07 01:55:28,699 WARN L860 $PredicateComparison]: unable to prove that (or (not (bvugt c_ULTIMATE.start_main_~a~0 (_ bv2 32))) (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (let ((.cse3 (bvadd c_ULTIMATE.start_main_~a~0 (_ bv4294967294 32)))) (let ((.cse1 (bvudiv c_ULTIMATE.start_main_~n~0 .cse3)) (.cse0 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (.cse2 (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (bvadd (bvmul (_ bv4 32) (bvmul .cse0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv4 32) (bvmul .cse1 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvmul .cse2 (_ bv4 32)) c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvadd (bvmul .cse1 (_ bv8 32)) (bvmul .cse0 (_ bv8 32))) c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv8 32) .cse2) (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse3) c_ULTIMATE.start_main_~a~0))))))) is different from true [2021-11-07 01:55:54,802 WARN L860 $PredicateComparison]: unable to prove that (or (not (bvugt c_ULTIMATE.start_main_~a~0 (_ bv2 32))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (let ((.cse3 (bvadd c_ULTIMATE.start_main_~a~0 (_ bv4294967294 32)))) (let ((.cse1 (bvudiv c_ULTIMATE.start_main_~n~0 .cse3)) (.cse0 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (.cse2 (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (bvadd (bvmul (_ bv4 32) (bvmul .cse0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv4 32) (bvmul .cse1 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvmul .cse2 (_ bv4 32)) c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvadd (bvmul .cse1 (_ bv8 32)) (bvmul .cse0 (_ bv8 32))) c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv8 32) .cse2) (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse3) c_ULTIMATE.start_main_~a~0))))))) is different from true [2021-11-07 01:56:09,578 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_10 (_ BitVec 32))) (or (not (bvugt v_ULTIMATE.start_main_~a~0_10 (_ bv2 32))) (not (bvule v_ULTIMATE.start_main_~a~0_10 (_ bv10 32))) (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (let ((.cse1 (bvadd v_ULTIMATE.start_main_~a~0_10 (_ bv4294967294 32)))) (let ((.cse0 (bvurem c_ULTIMATE.start_main_~n~0 v_ULTIMATE.start_main_~a~0_10)) (.cse2 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 v_ULTIMATE.start_main_~a~0_10))) (.cse3 (bvudiv c_ULTIMATE.start_main_~n~0 .cse1))) (bvadd (bvneg (bvmul (bvmul .cse0 (_ bv4 32)) v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv8 32) .cse0) (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse1) v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul .cse2 v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul .cse3 v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10)) (bvneg (bvmul (bvadd (bvmul .cse2 (_ bv8 32)) (bvmul .cse3 (_ bv8 32))) v_ULTIMATE.start_main_~a~0_10)))))))) is different from true [2021-11-07 01:56:22,082 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_main_~a~0_10 (_ BitVec 32))) (or (not (bvugt v_ULTIMATE.start_main_~a~0_10 (_ bv2 32))) (not (bvule v_ULTIMATE.start_main_~a~0_10 (_ bv10 32))) (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (let ((.cse1 (bvadd v_ULTIMATE.start_main_~a~0_10 (_ bv4294967294 32)))) (let ((.cse0 (bvurem c_ULTIMATE.start_main_~n~0 v_ULTIMATE.start_main_~a~0_10)) (.cse2 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 v_ULTIMATE.start_main_~a~0_10))) (.cse3 (bvudiv c_ULTIMATE.start_main_~n~0 .cse1))) (bvadd (bvneg (bvmul (bvmul .cse0 (_ bv4 32)) v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv8 32) .cse0) (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse1) v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul .cse2 v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul .cse3 v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10)) (bvneg (bvmul (bvadd (bvmul .cse2 (_ bv8 32)) (bvmul .cse3 (_ bv8 32))) v_ULTIMATE.start_main_~a~0_10)))))))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) is different from true [2021-11-07 01:56:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:56:22,706 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:56:22,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828027037] [2021-11-07 01:56:22,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828027037] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:56:22,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:56:22,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-07 01:56:22,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615214387] [2021-11-07 01:56:22,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:56:22,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:56:22,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:56:22,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=108, Unknown=6, NotChecked=150, Total=306 [2021-11-07 01:56:22,713 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:27,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:27,950 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2021-11-07 01:57:27,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 01:57:27,970 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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 13 [2021-11-07 01:57:27,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:27,972 INFO L225 Difference]: With dead ends: 68 [2021-11-07 01:57:27,972 INFO L226 Difference]: Without dead ends: 66 [2021-11-07 01:57:27,975 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 56.0s TimeCoverageRelationStatistics Valid=109, Invalid=329, Unknown=6, NotChecked=258, Total=702 [2021-11-07 01:57:27,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-07 01:57:27,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 44. [2021-11-07 01:57:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.325) internal successors, (53), 43 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2021-11-07 01:57:27,989 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 13 [2021-11-07 01:57:27,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:27,990 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2021-11-07 01:57:27,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2021-11-07 01:57:27,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:57:27,992 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:27,992 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:28,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:28,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:28,218 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:57:28,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:28,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2021-11-07 01:57:28,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:28,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670321107] [2021-11-07 01:57:28,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:28,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:28,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:28,222 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:28,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:57:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:28,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:57:28,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:28,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:29,500 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:29,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670321107] [2021-11-07 01:57:29,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670321107] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:29,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:29,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:57:29,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250000975] [2021-11-07 01:57:29,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:57:29,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:29,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:57:29,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:57:29,504 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:31,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:31,180 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2021-11-07 01:57:31,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:57:31,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 15 [2021-11-07 01:57:31,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:31,183 INFO L225 Difference]: With dead ends: 50 [2021-11-07 01:57:31,183 INFO L226 Difference]: Without dead ends: 48 [2021-11-07 01:57:31,183 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:57:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-07 01:57:31,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2021-11-07 01:57:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.3) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:31,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2021-11-07 01:57:31,193 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 15 [2021-11-07 01:57:31,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:31,194 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2021-11-07 01:57:31,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:31,194 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2021-11-07 01:57:31,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 01:57:31,195 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:31,195 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:31,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:31,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:31,414 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:57:31,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:31,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2021-11-07 01:57:31,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:31,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588358314] [2021-11-07 01:57:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:31,416 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:31,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:31,417 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:31,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:57:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:32,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 01:57:32,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:58:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:01,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:37,240 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse7 (bvadd c_ULTIMATE.start_main_~a~0 (_ bv4294967294 32)))) (let ((.cse6 (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0)) (.cse4 (bvudiv c_ULTIMATE.start_main_~n~0 .cse7)) (.cse5 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0)))) (let ((.cse0 (bvmul (_ bv4 32) (bvmul .cse5 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0))) (.cse1 (bvmul (_ bv4 32) (bvmul .cse4 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0))) (.cse2 (bvmul (_ bv8 32) .cse6)) (.cse3 (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse7) c_ULTIMATE.start_main_~a~0)))) (or (= (bvadd .cse0 .cse1 .cse2 .cse3 (bvneg (bvmul c_ULTIMATE.start_main_~n~0 (_ bv8 32))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~a~0 (_ bv2 32)) (bvadd (bvmul .cse4 (_ bv4 32)) (bvmul .cse5 (_ bv4 32))))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~a~0 (_ bv4 32)) .cse6))) (_ bv0 32)) (not (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (bvadd .cse0 .cse1 (bvneg (bvmul (bvmul .cse6 (_ bv4 32)) c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvadd (bvmul .cse4 (_ bv8 32)) (bvmul .cse5 (_ bv8 32))) c_ULTIMATE.start_main_~a~0)) .cse2 .cse3))))))) is different from true [2021-11-07 01:58:50,342 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse7 (bvadd c_ULTIMATE.start_main_~a~0 (_ bv4294967294 32)))) (let ((.cse6 (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0)) (.cse4 (bvudiv c_ULTIMATE.start_main_~n~0 .cse7)) (.cse5 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0)))) (let ((.cse0 (bvmul (_ bv4 32) (bvmul .cse5 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0))) (.cse1 (bvmul (_ bv4 32) (bvmul .cse4 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0))) (.cse2 (bvmul (_ bv8 32) .cse6)) (.cse3 (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse7) c_ULTIMATE.start_main_~a~0)))) (or (= (bvadd .cse0 .cse1 .cse2 .cse3 (bvneg (bvmul c_ULTIMATE.start_main_~n~0 (_ bv8 32))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~a~0 (_ bv2 32)) (bvadd (bvmul .cse4 (_ bv4 32)) (bvmul .cse5 (_ bv4 32))))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~a~0 (_ bv4 32)) .cse6))) (_ bv0 32)) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (not (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (bvadd .cse0 .cse1 (bvneg (bvmul (bvmul .cse6 (_ bv4 32)) c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvadd (bvmul .cse4 (_ bv8 32)) (bvmul .cse5 (_ bv8 32))) c_ULTIMATE.start_main_~a~0)) .cse2 .cse3))))))) is different from true [2021-11-07 01:59:03,339 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse7 (bvadd c_ULTIMATE.start_main_~a~0 (_ bv4294967294 32)))) (let ((.cse6 (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0)) (.cse4 (bvudiv c_ULTIMATE.start_main_~n~0 .cse7)) (.cse5 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0)))) (let ((.cse0 (bvmul (_ bv4 32) (bvmul .cse5 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0))) (.cse1 (bvmul (_ bv4 32) (bvmul .cse4 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0))) (.cse2 (bvmul (_ bv8 32) .cse6)) (.cse3 (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse7) c_ULTIMATE.start_main_~a~0)))) (or (= (bvadd .cse0 .cse1 .cse2 .cse3 (bvneg (bvmul c_ULTIMATE.start_main_~n~0 (_ bv8 32))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~a~0 (_ bv2 32)) (bvadd (bvmul .cse4 (_ bv4 32)) (bvmul .cse5 (_ bv4 32))))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~a~0 (_ bv4 32)) .cse6))) (_ bv0 32)) (not (bvugt c_ULTIMATE.start_main_~a~0 (_ bv2 32))) (not (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (bvadd .cse0 .cse1 (bvneg (bvmul (bvmul .cse6 (_ bv4 32)) c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvadd (bvmul .cse4 (_ bv8 32)) (bvmul .cse5 (_ bv8 32))) c_ULTIMATE.start_main_~a~0)) .cse2 .cse3))))))) is different from true [2021-11-07 01:59:41,977 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse7 (bvadd c_ULTIMATE.start_main_~a~0 (_ bv4294967294 32)))) (let ((.cse6 (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0)) (.cse4 (bvudiv c_ULTIMATE.start_main_~n~0 .cse7)) (.cse5 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0)))) (let ((.cse0 (bvmul (_ bv4 32) (bvmul .cse5 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0))) (.cse1 (bvmul (_ bv4 32) (bvmul .cse4 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0))) (.cse2 (bvmul (_ bv8 32) .cse6)) (.cse3 (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse7) c_ULTIMATE.start_main_~a~0)))) (or (= (bvadd .cse0 .cse1 .cse2 .cse3 (bvneg (bvmul c_ULTIMATE.start_main_~n~0 (_ bv8 32))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~a~0 (_ bv2 32)) (bvadd (bvmul .cse4 (_ bv4 32)) (bvmul .cse5 (_ bv4 32))))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~a~0 (_ bv4 32)) .cse6))) (_ bv0 32)) (not (bvugt c_ULTIMATE.start_main_~a~0 (_ bv2 32))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (not (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (bvadd .cse0 .cse1 (bvneg (bvmul (bvmul .cse6 (_ bv4 32)) c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvadd (bvmul .cse4 (_ bv8 32)) (bvmul .cse5 (_ bv8 32))) c_ULTIMATE.start_main_~a~0)) .cse2 .cse3))))))) is different from true [2021-11-07 01:59:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:48,528 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:59:48,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588358314] [2021-11-07 01:59:48,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588358314] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:59:48,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:59:48,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 19 [2021-11-07 01:59:48,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443092344] [2021-11-07 01:59:48,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:59:48,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:59:48,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:59:48,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=163, Unknown=4, NotChecked=116, Total=342 [2021-11-07 01:59:48,532 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:19,896 WARN L207 SmtUtils]: Spent 6.99 s on a formula simplification. DAG size of input: 67 DAG size of output: 11 [2021-11-07 02:01:33,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:33,802 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2021-11-07 02:01:33,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 02:01:33,833 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 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 17 [2021-11-07 02:01:33,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:33,834 INFO L225 Difference]: With dead ends: 55 [2021-11-07 02:01:33,834 INFO L226 Difference]: Without dead ends: 51 [2021-11-07 02:01:33,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 88.3s TimeCoverageRelationStatistics Valid=133, Invalid=384, Unknown=5, NotChecked=180, Total=702 [2021-11-07 02:01:33,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-07 02:01:33,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2021-11-07 02:01:33,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 44 states have (on average 1.25) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:33,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-11-07 02:01:33,846 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 17 [2021-11-07 02:01:33,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:33,847 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-11-07 02:01:33,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:33,847 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-11-07 02:01:33,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 02:01:33,848 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:33,849 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:33,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:34,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:01:34,065 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:01:34,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:34,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1041819038, now seen corresponding path program 1 times [2021-11-07 02:01:34,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:34,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486970215] [2021-11-07 02:01:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:34,066 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:34,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:34,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:34,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:01:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:34,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:01:34,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:34,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:35,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:35,814 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:01:35,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486970215] [2021-11-07 02:01:35,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486970215] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:35,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:01:35,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:01:35,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412385055] [2021-11-07 02:01:35,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:01:35,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:01:35,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:01:35,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:01:35,818 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 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) [2021-11-07 02:01:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:47,834 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2021-11-07 02:01:47,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:01:47,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 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 25 [2021-11-07 02:01:47,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:47,836 INFO L225 Difference]: With dead ends: 48 [2021-11-07 02:01:47,836 INFO L226 Difference]: Without dead ends: 46 [2021-11-07 02:01:47,837 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:01:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-07 02:01:47,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-07 02:01:47,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:47,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2021-11-07 02:01:47,859 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 25 [2021-11-07 02:01:47,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:47,860 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2021-11-07 02:01:47,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 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) [2021-11-07 02:01:47,862 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2021-11-07 02:01:47,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 02:01:47,863 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:47,864 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:47,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:48,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:01:48,069 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:01:48,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:48,069 INFO L85 PathProgramCache]: Analyzing trace with hash 516826116, now seen corresponding path program 1 times [2021-11-07 02:01:48,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:48,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122527521] [2021-11-07 02:01:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:48,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:48,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:48,074 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:48,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb5ef77-9e82-4a67-b7b6-80c419d08651/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:01:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:48,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 02:01:48,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:57,813 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:02:03,538 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-07 02:02:09,223 WARN L207 SmtUtils]: Spent 5.68 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:02:14,879 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:02:19,891 WARN L207 SmtUtils]: Spent 5.01 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 02:02:22,422 WARN L838 $PredicateComparison]: unable to prove that (and (bvule c_ULTIMATE.start_main_~d~0 (_ bv10 32)) (bvugt c_ULTIMATE.start_main_~d~0 (_ bv2 32)) (exists ((ULTIMATE.start_main_~n~0 (_ BitVec 32))) (let ((.cse0 (bvadd c_ULTIMATE.start_main_~d~0 (_ bv4294967294 32)))) (and (bvule ULTIMATE.start_main_~n~0 (_ bv10 32)) (= c_ULTIMATE.start_main_~q~0 (bvadd (bvmul (_ bv4 32) (bvudiv ULTIMATE.start_main_~n~0 .cse0)) (bvmul (_ bv4 32) (bvneg (bvudiv ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~d~0))))) (= (bvurem ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~d~0) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~k~0 (bvurem ULTIMATE.start_main_~n~0 .cse0)) (= ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven ULTIMATE.start_main_~n~0))) c_ULTIMATE.start_main_~s~0))))) is different from false [2021-11-07 02:02:28,227 WARN L207 SmtUtils]: Spent 5.67 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:02:33,945 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-07 02:02:39,712 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:02:45,563 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:02:50,691 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 02:02:56,547 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:03:02,269 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-07 02:03:08,164 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:03:13,897 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:03:18,922 WARN L207 SmtUtils]: Spent 5.03 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 02:03:24,785 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:03:30,541 WARN L207 SmtUtils]: Spent 5.76 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-07 02:03:36,280 WARN L207 SmtUtils]: Spent 5.74 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:03:42,094 WARN L207 SmtUtils]: Spent 5.81 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:03:47,158 WARN L207 SmtUtils]: Spent 5.06 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 02:03:53,017 WARN L207 SmtUtils]: Spent 5.76 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:03:58,547 WARN L207 SmtUtils]: Spent 5.53 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-07 02:04:04,124 WARN L207 SmtUtils]: Spent 5.58 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:04:09,754 WARN L207 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:04:14,857 WARN L207 SmtUtils]: Spent 5.10 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 02:04:20,626 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:04:26,200 WARN L207 SmtUtils]: Spent 5.57 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-07 02:04:31,841 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:04:37,455 WARN L207 SmtUtils]: Spent 5.61 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:04:42,541 WARN L207 SmtUtils]: Spent 5.08 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 02:04:48,327 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:04:53,971 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-07 02:04:59,666 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:05:05,346 WARN L207 SmtUtils]: Spent 5.68 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:05:10,351 WARN L207 SmtUtils]: Spent 5.00 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 02:05:16,086 WARN L207 SmtUtils]: Spent 5.62 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:05:21,852 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-07 02:05:27,625 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:05:33,408 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:05:38,497 WARN L207 SmtUtils]: Spent 5.09 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 02:05:44,381 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:05:50,057 WARN L207 SmtUtils]: Spent 5.68 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-07 02:05:55,734 WARN L207 SmtUtils]: Spent 5.68 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:06:01,479 WARN L207 SmtUtils]: Spent 5.74 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:06:06,590 WARN L207 SmtUtils]: Spent 5.11 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 02:06:12,295 WARN L207 SmtUtils]: Spent 5.67 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:06:18,018 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-07 02:06:23,737 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:06:29,596 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:06:34,851 WARN L207 SmtUtils]: Spent 5.25 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 02:06:40,678 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-07 02:06:46,523 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:06:52,314 WARN L207 SmtUtils]: Spent 5.79 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:06:57,411 WARN L207 SmtUtils]: Spent 5.10 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 02:07:03,198 WARN L207 SmtUtils]: Spent 5.79 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:07:09,067 WARN L207 SmtUtils]: Spent 5.87 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:07:14,866 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:07:20,600 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-07 02:07:26,350 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:07:32,159 WARN L207 SmtUtils]: Spent 5.81 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:07:37,325 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 02:07:43,127 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:07:49,021 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:07:51,637 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~n~0 (_ BitVec 32)) (ULTIMATE.start_main_~d~0 (_ BitVec 32))) (let ((.cse0 (bvadd ULTIMATE.start_main_~d~0 (_ bv4294967294 32)))) (and (bvule ULTIMATE.start_main_~n~0 (_ bv10 32)) (= c_ULTIMATE.start_main_~q~0 (bvadd (bvmul (_ bv4 32) (bvudiv ULTIMATE.start_main_~n~0 .cse0)) (bvmul (_ bv4 32) (bvneg (bvudiv ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~d~0))))) (= (bvurem ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~d~0) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~k~0 (bvurem ULTIMATE.start_main_~n~0 .cse0)) (bvuge ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven ULTIMATE.start_main_~n~0))) ULTIMATE.start_main_~d~0) (bvule ULTIMATE.start_main_~d~0 (_ bv10 32)) (bvugt ULTIMATE.start_main_~d~0 (_ bv2 32))))) (not (= c_ULTIMATE.start_main_~r~0 (_ bv0 32)))) is different from false [2021-11-07 02:08:00,168 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:08:05,975 WARN L207 SmtUtils]: Spent 5.81 s on a formula simplification that was a NOOP. DAG size: 16 [2021-11-07 02:08:11,778 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:08:16,928 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 02:08:22,711 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification that was a NOOP. DAG size: 16 [2021-11-07 02:08:28,523 WARN L207 SmtUtils]: Spent 5.81 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:08:33,676 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 02:08:45,773 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:08:51,627 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 16 [2021-11-07 02:08:57,456 WARN L207 SmtUtils]: Spent 5.83 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:09:02,684 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 8