./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.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_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/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_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/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_d54cb11d-c0d2-4de3-8974-afea62e9656f/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 bb5ad63279572b10ccf828ab50fb4850c30a9bc769c3e514e6f9dd22eeb86526 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:27:57,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:27:57,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:27:57,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:27:57,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:27:57,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:27:57,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:27:57,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:27:57,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:27:57,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:27:57,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:27:57,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:27:57,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:27:57,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:27:57,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:27:57,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:27:57,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:27:57,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:27:57,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:27:57,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:27:57,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:27:57,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:27:57,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:27:57,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:27:57,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:27:57,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:27:57,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:27:57,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:27:57,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:27:57,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:27:57,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:27:57,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:27:57,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:27:57,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:27:57,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:27:57,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:27:57,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:27:57,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:27:57,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:27:57,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:27:57,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:27:57,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:27:57,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:27:57,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:27:57,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:27:57,230 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:27:57,230 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:27:57,230 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:27:57,231 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:27:57,231 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:27:57,231 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:27:57,231 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:27:57,238 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:27:57,239 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:27:57,239 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:27:57,239 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:27:57,240 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:27:57,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:27:57,240 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:27:57,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:27:57,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:27:57,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:27:57,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:27:57,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:27:57,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:27:57,242 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:27:57,242 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:27:57,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:27:57,243 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:27:57,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:27:57,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:27:57,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:27:57,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:27:57,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:27:57,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:27:57,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:27:57,246 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:27:57,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:27:57,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:27:57,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:27:57,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:27:57,247 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_d54cb11d-c0d2-4de3-8974-afea62e9656f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb5ad63279572b10ccf828ab50fb4850c30a9bc769c3e514e6f9dd22eeb86526 [2021-11-07 01:27:57,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:27:57,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:27:57,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:27:57,600 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:27:57,601 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:27:57,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i [2021-11-07 01:27:57,673 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/data/1d75dafbb/1d6095e4c650432b9842c4d842eb6f6a/FLAGbab730c47 [2021-11-07 01:27:58,283 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:27:58,290 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i [2021-11-07 01:27:58,304 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/data/1d75dafbb/1d6095e4c650432b9842c4d842eb6f6a/FLAGbab730c47 [2021-11-07 01:27:58,616 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/data/1d75dafbb/1d6095e4c650432b9842c4d842eb6f6a [2021-11-07 01:27:58,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:27:58,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:27:58,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:58,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:27:58,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:27:58,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:58" (1/1) ... [2021-11-07 01:27:58,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40953d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:58, skipping insertion in model container [2021-11-07 01:27:58,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:58" (1/1) ... [2021-11-07 01:27:58,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:27:58,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:27:58,805 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_d54cb11d-c0d2-4de3-8974-afea62e9656f/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i[948,961] [2021-11-07 01:27:58,844 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 01:27:58,850 INFO L168 Benchmark]: Toolchain (without parser) took 227.76 ms. Allocated memory is still 117.4 MB. Free memory was 90.8 MB in the beginning and 92.8 MB in the end (delta: -2.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:27:58,851 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 117.4 MB. Free memory was 72.2 MB in the beginning and 72.1 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:27:58,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.39 ms. Allocated memory is still 117.4 MB. Free memory was 90.5 MB in the beginning and 92.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:27:58,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 117.4 MB. Free memory was 72.2 MB in the beginning and 72.1 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 225.39 ms. Allocated memory is still 117.4 MB. Free memory was 90.5 MB in the beginning and 92.8 MB in the end (delta: -2.3 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_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/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_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/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_d54cb11d-c0d2-4de3-8974-afea62e9656f/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 bb5ad63279572b10ccf828ab50fb4850c30a9bc769c3e514e6f9dd22eeb86526 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:28:01,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:28:01,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:28:01,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:28:01,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:28:01,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:28:01,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:28:01,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:28:01,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:28:01,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:28:01,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:28:01,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:28:01,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:28:01,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:28:01,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:28:01,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:28:01,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:28:01,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:28:01,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:28:01,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:28:01,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:28:01,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:28:01,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:28:01,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:28:01,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:28:01,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:28:01,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:28:01,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:28:01,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:28:01,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:28:01,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:28:01,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:28:01,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:28:01,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:28:01,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:28:01,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:28:01,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:28:01,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:28:01,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:28:01,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:28:01,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:28:01,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:28:01,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:28:01,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:28:01,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:28:01,416 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:28:01,416 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:28:01,416 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:28:01,417 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:28:01,417 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:28:01,417 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:28:01,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:28:01,420 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:28:01,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:28:01,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:28:01,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:28:01,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:28:01,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:28:01,421 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:28:01,421 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:28:01,421 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:28:01,422 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:28:01,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:28:01,422 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:28:01,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:28:01,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:28:01,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:28:01,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:28:01,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:28:01,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:28:01,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:28:01,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:28:01,424 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:28:01,424 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:01,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:28:01,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:28:01,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:28:01,425 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_d54cb11d-c0d2-4de3-8974-afea62e9656f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb5ad63279572b10ccf828ab50fb4850c30a9bc769c3e514e6f9dd22eeb86526 [2021-11-07 01:28:01,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:28:01,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:28:01,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:28:01,869 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:28:01,870 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:28:01,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i [2021-11-07 01:28:01,958 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/data/909cf9bb4/27cdd562f08d4c6ca013a26a99e73b81/FLAG16e356ba0 [2021-11-07 01:28:02,676 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:28:02,677 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i [2021-11-07 01:28:02,691 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/data/909cf9bb4/27cdd562f08d4c6ca013a26a99e73b81/FLAG16e356ba0 [2021-11-07 01:28:02,952 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/data/909cf9bb4/27cdd562f08d4c6ca013a26a99e73b81 [2021-11-07 01:28:02,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:28:02,957 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:28:02,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:28:02,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:28:02,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:28:02,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:28:02" (1/1) ... [2021-11-07 01:28:02,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ddc45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:02, skipping insertion in model container [2021-11-07 01:28:02,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:28:02" (1/1) ... [2021-11-07 01:28:02,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:28:02,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:28:03,152 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_d54cb11d-c0d2-4de3-8974-afea62e9656f/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i[948,961] [2021-11-07 01:28:03,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:28:03,201 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:28:03,215 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_d54cb11d-c0d2-4de3-8974-afea62e9656f/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i[948,961] [2021-11-07 01:28:03,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:28:03,247 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:28:03,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:03 WrapperNode [2021-11-07 01:28:03,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:28:03,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:28:03,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:28:03,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:28:03,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:03" (1/1) ... [2021-11-07 01:28:03,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:03" (1/1) ... [2021-11-07 01:28:03,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:28:03,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:28:03,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:28:03,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:28:03,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:03" (1/1) ... [2021-11-07 01:28:03,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:03" (1/1) ... [2021-11-07 01:28:03,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:03" (1/1) ... [2021-11-07 01:28:03,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:03" (1/1) ... [2021-11-07 01:28:03,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:03" (1/1) ... [2021-11-07 01:28:03,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:03" (1/1) ... [2021-11-07 01:28:03,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:03" (1/1) ... [2021-11-07 01:28:03,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:28:03,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:28:03,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:28:03,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:28:03,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:03" (1/1) ... [2021-11-07 01:28:03,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:28:03,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:28:03,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:28:03,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:28:03,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:28:03,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:28:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:28:03,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:28:06,897 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:28:06,898 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-11-07 01:28:06,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:28:06 BoogieIcfgContainer [2021-11-07 01:28:06,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:28:06,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:28:06,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:28:06,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:28:06,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:28:02" (1/3) ... [2021-11-07 01:28:06,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8b7880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:28:06, skipping insertion in model container [2021-11-07 01:28:06,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:03" (2/3) ... [2021-11-07 01:28:06,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8b7880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:28:06, skipping insertion in model container [2021-11-07 01:28:06,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:28:06" (3/3) ... [2021-11-07 01:28:06,910 INFO L111 eAbstractionObserver]: Analyzing ICFG knuth_valuebound50.i [2021-11-07 01:28:06,915 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:28:06,915 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 01:28:06,976 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:28:06,983 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 01:28:06,984 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 01:28:06,998 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 01:28:07,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:28:07,005 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:07,005 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:07,006 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 01:28:07,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:07,013 INFO L85 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-11-07 01:28:07,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:07,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719580866] [2021-11-07 01:28:07,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:07,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:07,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:07,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:07,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:28:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:07,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:28:07,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:07,776 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 01:28:07,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:08,052 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 01:28:08,053 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:08,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719580866] [2021-11-07 01:28:08,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719580866] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:08,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:08,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:28:08,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293980003] [2021-11-07 01:28:08,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:28:08,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:28:08,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:28:08,076 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 01:28:08,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:08,092 INFO L93 Difference]: Finished difference Result 65 states and 90 transitions. [2021-11-07 01:28:08,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:28:08,094 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 01:28:08,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:08,102 INFO L225 Difference]: With dead ends: 65 [2021-11-07 01:28:08,103 INFO L226 Difference]: Without dead ends: 30 [2021-11-07 01:28:08,105 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 01:28:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-07 01:28:08,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-07 01:28:08,140 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 01:28:08,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-11-07 01:28:08,145 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2021-11-07 01:28:08,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:08,146 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-11-07 01:28:08,146 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 01:28:08,146 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-11-07 01:28:08,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:28:08,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:08,148 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:08,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:08,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:08,361 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 01:28:08,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:08,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-11-07 01:28:08,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:08,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030668804] [2021-11-07 01:28:08,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:08,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:08,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:08,365 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:08,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:28:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:23,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:28:23,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:18,733 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~n~0 (_ BitVec 32)) (ULTIMATE.start_main_~d~0 (_ BitVec 32))) (and (not (= (bvmul (_ bv8 32) ULTIMATE.start_main_~n~0) (let ((.cse3 (bvadd ULTIMATE.start_main_~d~0 (_ bv4294967294 32)))) (let ((.cse1 (bvurem ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~d~0)) (.cse0 (bvudiv ULTIMATE.start_main_~n~0 .cse3)) (.cse2 (bvneg (bvudiv ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~d~0)))) (bvadd (bvmul (_ bv4 32) (bvmul ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~d~0 .cse0)) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul .cse2 ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~d~0)) (bvmul (_ bv4 32) (bvmul ULTIMATE.start_main_~d~0 (bvurem ULTIMATE.start_main_~n~0 .cse3))) (bvneg (bvmul (bvmul .cse1 (_ bv4 32)) ULTIMATE.start_main_~d~0)) (bvneg (bvmul (bvadd (bvmul .cse0 (_ bv8 32)) (bvmul .cse2 (_ bv8 32))) ULTIMATE.start_main_~d~0))))))) (bvule ULTIMATE.start_main_~n~0 (_ bv50 32)) (bvule ULTIMATE.start_main_~d~0 (_ bv50 32)))) is different from false [2021-11-07 01:30:20,762 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~n~0 (_ BitVec 32)) (ULTIMATE.start_main_~d~0 (_ BitVec 32))) (and (not (= (bvmul (_ bv8 32) ULTIMATE.start_main_~n~0) (let ((.cse3 (bvadd ULTIMATE.start_main_~d~0 (_ bv4294967294 32)))) (let ((.cse1 (bvurem ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~d~0)) (.cse0 (bvudiv ULTIMATE.start_main_~n~0 .cse3)) (.cse2 (bvneg (bvudiv ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~d~0)))) (bvadd (bvmul (_ bv4 32) (bvmul ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~d~0 .cse0)) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul .cse2 ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~d~0)) (bvmul (_ bv4 32) (bvmul ULTIMATE.start_main_~d~0 (bvurem ULTIMATE.start_main_~n~0 .cse3))) (bvneg (bvmul (bvmul .cse1 (_ bv4 32)) ULTIMATE.start_main_~d~0)) (bvneg (bvmul (bvadd (bvmul .cse0 (_ bv8 32)) (bvmul .cse2 (_ bv8 32))) ULTIMATE.start_main_~d~0))))))) (bvule ULTIMATE.start_main_~n~0 (_ bv50 32)) (bvule ULTIMATE.start_main_~d~0 (_ bv50 32)))) is different from true [2021-11-07 01:30:20,763 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 01:30:20,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:32,326 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 01:30:41,341 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 01:30:50,995 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 01:31:17,000 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 01:31:32,618 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_10 (_ BitVec 32))) (or (not (bvule v_ULTIMATE.start_main_~a~0_10 (_ bv50 32))) (not (bvugt v_ULTIMATE.start_main_~a~0_10 (_ bv2 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 01:31:45,170 WARN L860 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (forall ((v_ULTIMATE.start_main_~a~0_10 (_ BitVec 32))) (or (not (bvule v_ULTIMATE.start_main_~a~0_10 (_ bv50 32))) (not (bvugt v_ULTIMATE.start_main_~a~0_10 (_ bv2 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 01:32:21,477 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~n~0_10 (_ BitVec 32)) (v_ULTIMATE.start_main_~a~0_10 (_ BitVec 32))) (or (not (bvule v_ULTIMATE.start_main_~a~0_10 (_ bv50 32))) (= (bvmul (_ bv8 32) v_ULTIMATE.start_main_~n~0_10) (let ((.cse2 (bvadd v_ULTIMATE.start_main_~a~0_10 (_ bv4294967294 32)))) (let ((.cse0 (bvudiv v_ULTIMATE.start_main_~n~0_10 .cse2)) (.cse1 (bvneg (bvudiv v_ULTIMATE.start_main_~n~0_10 v_ULTIMATE.start_main_~a~0_10))) (.cse3 (bvurem v_ULTIMATE.start_main_~n~0_10 v_ULTIMATE.start_main_~a~0_10))) (bvadd (bvneg (bvmul (bvadd (bvmul .cse0 (_ bv8 32)) (bvmul .cse1 (_ bv8 32))) v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul .cse0 v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul v_ULTIMATE.start_main_~a~0_10 (bvurem v_ULTIMATE.start_main_~n~0_10 .cse2))) (bvmul (_ bv4 32) (bvmul v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10 .cse1)) (bvmul (_ bv8 32) .cse3) (bvneg (bvmul (bvmul .cse3 (_ bv4 32)) v_ULTIMATE.start_main_~a~0_10)))))) (not (bvule v_ULTIMATE.start_main_~n~0_10 (_ bv50 32))))) is different from false [2021-11-07 01:32:23,524 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~n~0_10 (_ BitVec 32)) (v_ULTIMATE.start_main_~a~0_10 (_ BitVec 32))) (or (not (bvule v_ULTIMATE.start_main_~a~0_10 (_ bv50 32))) (= (bvmul (_ bv8 32) v_ULTIMATE.start_main_~n~0_10) (let ((.cse2 (bvadd v_ULTIMATE.start_main_~a~0_10 (_ bv4294967294 32)))) (let ((.cse0 (bvudiv v_ULTIMATE.start_main_~n~0_10 .cse2)) (.cse1 (bvneg (bvudiv v_ULTIMATE.start_main_~n~0_10 v_ULTIMATE.start_main_~a~0_10))) (.cse3 (bvurem v_ULTIMATE.start_main_~n~0_10 v_ULTIMATE.start_main_~a~0_10))) (bvadd (bvneg (bvmul (bvadd (bvmul .cse0 (_ bv8 32)) (bvmul .cse1 (_ bv8 32))) v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul .cse0 v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul v_ULTIMATE.start_main_~a~0_10 (bvurem v_ULTIMATE.start_main_~n~0_10 .cse2))) (bvmul (_ bv4 32) (bvmul v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10 .cse1)) (bvmul (_ bv8 32) .cse3) (bvneg (bvmul (bvmul .cse3 (_ bv4 32)) v_ULTIMATE.start_main_~a~0_10)))))) (not (bvule v_ULTIMATE.start_main_~n~0_10 (_ bv50 32))))) is different from true [2021-11-07 01:32:23,525 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 01:32:23,525 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:32:23,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030668804] [2021-11-07 01:32:23,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030668804] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:32:23,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:32:23,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 20 [2021-11-07 01:32:23,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510670030] [2021-11-07 01:32:23,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 01:32:23,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:32:23,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 01:32:23,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=105, Unknown=15, NotChecked=216, Total=380 [2021-11-07 01:32:23,530 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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 01:32:41,864 WARN L207 SmtUtils]: Spent 13.76 s on a formula simplification that was a NOOP. DAG size: 49 [2021-11-07 01:33:07,686 WARN L207 SmtUtils]: Spent 13.49 s on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-11-07 01:33:37,299 WARN L207 SmtUtils]: Spent 22.15 s on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-11-07 01:33:58,242 WARN L207 SmtUtils]: Spent 11.27 s on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-11-07 01:34:21,315 WARN L207 SmtUtils]: Spent 14.39 s on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-11-07 01:34:39,102 WARN L207 SmtUtils]: Spent 10.04 s on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2021-11-07 01:35:03,363 WARN L207 SmtUtils]: Spent 9.75 s on a formula simplification that was a NOOP. DAG size: 68 [2021-11-07 01:35:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:57,101 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2021-11-07 01:35:57,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:35:57,120 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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 01:35:57,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:57,121 INFO L225 Difference]: With dead ends: 50 [2021-11-07 01:35:57,121 INFO L226 Difference]: Without dead ends: 48 [2021-11-07 01:35:57,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 191.5s TimeCoverageRelationStatistics Valid=106, Invalid=365, Unknown=23, NotChecked=376, Total=870 [2021-11-07 01:35:57,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-07 01:35:57,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2021-11-07 01:35:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:57,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-11-07 01:35:57,132 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 13 [2021-11-07 01:35:57,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:57,132 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-11-07 01:35:57,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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 01:35:57,133 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-11-07 01:35:57,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:35:57,134 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:57,134 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:57,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:57,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:57,357 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 01:35:57,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:57,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2021-11-07 01:35:57,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:57,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746958004] [2021-11-07 01:35:57,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:57,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:57,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:57,360 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:57,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:35:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:57,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:35:57,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:58,057 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 01:35:58,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:58,557 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 01:35:58,557 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:58,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746958004] [2021-11-07 01:35:58,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746958004] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:58,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:58,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:35:58,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699798359] [2021-11-07 01:35:58,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:35:58,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:58,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:35:58,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:35:58,567 INFO L87 Difference]: Start difference. First operand 32 states and 35 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 01:35:59,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:59,980 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2021-11-07 01:35:59,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:35:59,981 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 01:35:59,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:59,982 INFO L225 Difference]: With dead ends: 48 [2021-11-07 01:35:59,982 INFO L226 Difference]: Without dead ends: 46 [2021-11-07 01:35:59,982 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 01:35:59,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-07 01:35:59,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2021-11-07 01:35:59,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 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 01:35:59,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-11-07 01:35:59,992 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 15 [2021-11-07 01:35:59,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:59,993 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-11-07 01:35:59,993 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 01:35:59,993 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-11-07 01:35:59,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 01:35:59,994 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:59,995 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 01:36:00,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 01:36:00,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:00,208 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 01:36:00,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:00,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2021-11-07 01:36:00,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:00,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658386207] [2021-11-07 01:36:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:00,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:00,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:00,213 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:00,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:36:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:20,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 01:36:20,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:55,251 WARN L207 SmtUtils]: Spent 14.45 s on a formula simplification that was a NOOP. DAG size: 52 [2021-11-07 01:37:15,386 WARN L207 SmtUtils]: Spent 5.47 s on a formula simplification that was a NOOP. DAG size: 44 [2021-11-07 01:37:52,313 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 01:37:52,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:32,526 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 01:38:32,527 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:38:32,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658386207] [2021-11-07 01:38:32,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658386207] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:38:32,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:38:32,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 6] imperfect sequences [] total 16 [2021-11-07 01:38:32,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736195555] [2021-11-07 01:38:32,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:38:32,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:38:32,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:38:32,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=178, Unknown=13, NotChecked=0, Total=240 [2021-11-07 01:38:32,530 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 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 01:39:02,582 WARN L207 SmtUtils]: Spent 7.50 s on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2021-11-07 01:39:44,355 WARN L207 SmtUtils]: Spent 25.17 s on a formula simplification that was a NOOP. DAG size: 70 [2021-11-07 01:40:17,509 WARN L207 SmtUtils]: Spent 28.55 s on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2021-11-07 01:40:49,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:49,660 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2021-11-07 01:40:49,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 01:40:49,690 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 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 01:40:49,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:49,692 INFO L225 Difference]: With dead ends: 39 [2021-11-07 01:40:49,693 INFO L226 Difference]: Without dead ends: 37 [2021-11-07 01:40:49,694 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 173.0s TimeCoverageRelationStatistics Valid=118, Invalid=411, Unknown=23, NotChecked=0, Total=552 [2021-11-07 01:40:49,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-07 01:40:49,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-11-07 01:40:49,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.21875) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:49,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-11-07 01:40:49,703 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 17 [2021-11-07 01:40:49,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:49,704 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-11-07 01:40:49,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 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 01:40:49,705 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-11-07 01:40:49,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 01:40:49,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:49,706 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:49,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:49,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:49,931 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:40:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:49,931 INFO L85 PathProgramCache]: Analyzing trace with hash 720171431, now seen corresponding path program 1 times [2021-11-07 01:40:49,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:49,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684060130] [2021-11-07 01:40:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:49,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:49,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:49,933 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:49,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:40:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:51,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:40:51,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:53,180 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 01:40:53,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:56,466 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 01:40:56,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:56,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684060130] [2021-11-07 01:40:56,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684060130] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:56,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:56,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-11-07 01:40:56,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156487930] [2021-11-07 01:40:56,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:40:56,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:56,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:40:56,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:40:56,471 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 01:41:05,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:05,444 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2021-11-07 01:41:05,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:41:05,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 19 [2021-11-07 01:41:05,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:05,462 INFO L225 Difference]: With dead ends: 45 [2021-11-07 01:41:05,463 INFO L226 Difference]: Without dead ends: 43 [2021-11-07 01:41:05,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:41:05,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-07 01:41:05,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2021-11-07 01:41:05,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 37 states have internal predecessors, (41), 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 01:41:05,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-11-07 01:41:05,473 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 19 [2021-11-07 01:41:05,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:05,473 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-11-07 01:41:05,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 01:41:05,474 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-11-07 01:41:05,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 01:41:05,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:05,475 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:05,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:41:05,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:05,689 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:41:05,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:05,690 INFO L85 PathProgramCache]: Analyzing trace with hash 729574747, now seen corresponding path program 1 times [2021-11-07 01:41:05,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:05,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246101107] [2021-11-07 01:41:05,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:05,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:05,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:05,695 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:05,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54cb11d-c0d2-4de3-8974-afea62e9656f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:41:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:07,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 01:41:07,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:16,812 WARN L207 SmtUtils]: Spent 5.94 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 01:41:22,487 WARN L207 SmtUtils]: Spent 5.67 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-07 01:41:28,151 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 01:41:33,833 WARN L207 SmtUtils]: Spent 5.68 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 01:41:39,595 WARN L207 SmtUtils]: Spent 5.76 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 01:41:45,344 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 01:41:51,074 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 01:41:56,800 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 01:42:01,926 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 01:42:04,482 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd c_ULTIMATE.start_main_~d~0 (_ bv4294967294 32)))) (and (bvugt c_ULTIMATE.start_main_~a~0 (_ bv2 32)) (= c_ULTIMATE.start_main_~q~0 (bvadd (bvmul (_ bv4 32) (bvudiv c_ULTIMATE.start_main_~n~0 .cse0)) (bvmul (_ bv4 32) (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~d~0))))) (bvule c_ULTIMATE.start_main_~a~0 (_ bv50 32)) (= c_ULTIMATE.start_main_~t~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~d~0) (= (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~d~0) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~k~0 (bvurem c_ULTIMATE.start_main_~n~0 .cse0)) (bvule c_ULTIMATE.start_main_~n~0 (_ bv50 32)) (= ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven c_ULTIMATE.start_main_~n~0))) c_ULTIMATE.start_main_~s~0))) is different from false [2021-11-07 01:42:06,991 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd c_ULTIMATE.start_main_~d~0 (_ bv4294967294 32)))) (and (bvugt c_ULTIMATE.start_main_~a~0 (_ bv2 32)) (= c_ULTIMATE.start_main_~q~0 (bvadd (bvmul (_ bv4 32) (bvudiv c_ULTIMATE.start_main_~n~0 .cse0)) (bvmul (_ bv4 32) (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~d~0))))) (bvule c_ULTIMATE.start_main_~a~0 (_ bv50 32)) (= c_ULTIMATE.start_main_~t~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~d~0) (= (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~d~0) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~k~0 (bvurem c_ULTIMATE.start_main_~n~0 .cse0)) (bvule c_ULTIMATE.start_main_~n~0 (_ bv50 32)) (= ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven c_ULTIMATE.start_main_~n~0))) c_ULTIMATE.start_main_~s~0))) is different from true [2021-11-07 01:42:12,770 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 01:42:18,541 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-07 01:42:24,292 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 01:42:30,023 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 3