./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9 --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 dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:14:23,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:14:23,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:14:23,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:14:23,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:14:23,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:14:23,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:14:23,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:14:23,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:14:23,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:14:23,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:14:23,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:14:23,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:14:23,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:14:23,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:14:23,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:14:23,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:14:23,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:14:23,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:14:23,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:14:23,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:14:23,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:14:23,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:14:23,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:14:23,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:14:23,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:14:23,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:14:23,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:14:23,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:14:23,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:14:23,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:14:23,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:14:23,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:14:23,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:14:23,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:14:23,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:14:23,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:14:23,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:14:23,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:14:23,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:14:23,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:14:23,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:14:23,170 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:14:23,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:14:23,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:14:23,172 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:14:23,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:14:23,173 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:14:23,173 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:14:23,173 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:14:23,173 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:14:23,174 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:14:23,174 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:14:23,174 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:14:23,175 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:14:23,175 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:14:23,175 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:14:23,175 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:14:23,176 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:14:23,176 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:14:23,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:14:23,177 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:14:23,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:14:23,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:14:23,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:14:23,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:14:23,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:14:23,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:14:23,179 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:14:23,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:14:23,179 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:14:23,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:14:23,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:14:23,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:14:23,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:14:23,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:14:23,181 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:14:23,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:14:23,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:14:23,182 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:14:23,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:14:23,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:14:23,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:14:23,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 [2022-11-20 20:14:23,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:14:23,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:14:23,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:14:23,456 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:14:23,458 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:14:23,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2022-11-20 20:14:26,523 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:14:26,883 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:14:26,883 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2022-11-20 20:14:26,898 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/data/3577a2819/113d4e9370064eed9860bfada4984e56/FLAGef2db23de [2022-11-20 20:14:26,912 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/data/3577a2819/113d4e9370064eed9860bfada4984e56 [2022-11-20 20:14:26,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:14:26,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:14:26,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:14:26,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:14:26,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:14:26,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:14:26" (1/1) ... [2022-11-20 20:14:26,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d0277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:26, skipping insertion in model container [2022-11-20 20:14:26,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:14:26" (1/1) ... [2022-11-20 20:14:26,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:14:26,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:14:27,469 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: fpclassify at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:800) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:2039) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:242) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1463) 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:1126) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) 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:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) 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:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.ExpressionResultTransformer.transformDispatchDecaySwitchRexBoolToInt(ExpressionResultTransformer.java:177) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:675) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:509) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1469) 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:1413) 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:1087) 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:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) 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:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) 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) [2022-11-20 20:14:27,474 INFO L158 Benchmark]: Toolchain (without parser) took 556.91ms. Allocated memory is still 186.6MB. Free memory was 153.7MB in the beginning and 141.4MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 20:14:27,474 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 134.2MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:14:27,475 INFO L158 Benchmark]: CACSL2BoogieTranslator took 554.56ms. Allocated memory is still 186.6MB. Free memory was 153.5MB in the beginning and 141.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 20:14:27,477 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 134.2MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 554.56ms. Allocated memory is still 186.6MB. Free memory was 153.5MB in the beginning and 141.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:800) 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9 --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 dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:14:29,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:14:29,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:14:29,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:14:29,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:14:29,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:14:29,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:14:29,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:14:29,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:14:29,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:14:29,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:14:29,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:14:29,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:14:29,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:14:29,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:14:29,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:14:29,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:14:29,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:14:29,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:14:29,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:14:29,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:14:29,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:14:29,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:14:29,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:14:29,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:14:29,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:14:29,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:14:29,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:14:29,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:14:29,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:14:29,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:14:29,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:14:29,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:14:29,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:14:29,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:14:29,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:14:29,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:14:29,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:14:29,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:14:29,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:14:29,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:14:29,853 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-20 20:14:29,878 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:14:29,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:14:29,879 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:14:29,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:14:29,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:14:29,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:14:29,880 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:14:29,880 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:14:29,881 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:14:29,881 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:14:29,881 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:14:29,881 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:14:29,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:14:29,882 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:14:29,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:14:29,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:14:29,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:14:29,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:14:29,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:14:29,883 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:14:29,884 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 20:14:29,884 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 20:14:29,884 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:14:29,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:14:29,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:14:29,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:14:29,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:14:29,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 20:14:29,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:14:29,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:14:29,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:14:29,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:14:29,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:14:29,886 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 20:14:29,886 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 20:14:29,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:14:29,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:14:29,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 20:14:29,887 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_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 [2022-11-20 20:14:30,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:14:30,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:14:30,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:14:30,317 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:14:30,319 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:14:30,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2022-11-20 20:14:33,605 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:14:33,902 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:14:33,906 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2022-11-20 20:14:33,927 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/data/0aefc276d/c94425d6c7f64e4191307acb182062a3/FLAG5b38168bd [2022-11-20 20:14:33,947 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/data/0aefc276d/c94425d6c7f64e4191307acb182062a3 [2022-11-20 20:14:33,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:14:33,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:14:33,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:14:33,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:14:33,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:14:33,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:14:33" (1/1) ... [2022-11-20 20:14:33,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@153e7c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:33, skipping insertion in model container [2022-11-20 20:14:33,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:14:33" (1/1) ... [2022-11-20 20:14:33,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:14:34,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:14:34,735 WARN L237 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_e138221f-74e0-40a0-83a9-0d5d8b94ae28/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40610,40623] [2022-11-20 20:14:34,757 WARN L237 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_e138221f-74e0-40a0-83a9-0d5d8b94ae28/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40902,40915] [2022-11-20 20:14:34,760 WARN L237 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_e138221f-74e0-40a0-83a9-0d5d8b94ae28/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40949,40962] [2022-11-20 20:14:34,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:14:34,778 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:14:34,831 WARN L237 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_e138221f-74e0-40a0-83a9-0d5d8b94ae28/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40610,40623] [2022-11-20 20:14:34,835 WARN L237 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_e138221f-74e0-40a0-83a9-0d5d8b94ae28/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40902,40915] [2022-11-20 20:14:34,841 WARN L237 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_e138221f-74e0-40a0-83a9-0d5d8b94ae28/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40949,40962] [2022-11-20 20:14:34,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:14:35,010 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:14:35,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:35 WrapperNode [2022-11-20 20:14:35,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:14:35,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:14:35,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:14:35,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:14:35,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:35" (1/1) ... [2022-11-20 20:14:35,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:35" (1/1) ... [2022-11-20 20:14:35,090 INFO L138 Inliner]: procedures = 450, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 35 [2022-11-20 20:14:35,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:14:35,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:14:35,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:14:35,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:14:35,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:35" (1/1) ... [2022-11-20 20:14:35,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:35" (1/1) ... [2022-11-20 20:14:35,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:35" (1/1) ... [2022-11-20 20:14:35,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:35" (1/1) ... [2022-11-20 20:14:35,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:35" (1/1) ... [2022-11-20 20:14:35,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:35" (1/1) ... [2022-11-20 20:14:35,139 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:35" (1/1) ... [2022-11-20 20:14:35,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:35" (1/1) ... [2022-11-20 20:14:35,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:14:35,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:14:35,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:14:35,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:14:35,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:35" (1/1) ... [2022-11-20 20:14:35,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:14:35,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:14:35,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:14:35,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:14:35,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 20:14:35,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:14:35,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:14:35,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:14:35,241 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 20:14:35,241 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 20:14:35,369 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:14:35,371 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:14:38,931 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:14:38,939 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:14:38,939 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:14:38,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:14:38 BoogieIcfgContainer [2022-11-20 20:14:38,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:14:38,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:14:38,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:14:38,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:14:38,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:14:33" (1/3) ... [2022-11-20 20:14:38,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6cef2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:14:38, skipping insertion in model container [2022-11-20 20:14:38,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:14:35" (2/3) ... [2022-11-20 20:14:38,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6cef2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:14:38, skipping insertion in model container [2022-11-20 20:14:38,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:14:38" (3/3) ... [2022-11-20 20:14:38,963 INFO L112 eAbstractionObserver]: Analyzing ICFG float-div1.i [2022-11-20 20:14:38,993 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:14:38,994 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 20:14:39,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:14:39,067 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@dc7395f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:14:39,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 20:14:39,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 20:14:39,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 20:14:39,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:39,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:14:39,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:14:39,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:39,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1300304823, now seen corresponding path program 1 times [2022-11-20 20:14:39,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:14:39,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991598245] [2022-11-20 20:14:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:39,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:14:39,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:14:39,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:14:39,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 20:14:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:39,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 20:14:39,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:14:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:14:39,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:14:39,576 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:14:39,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991598245] [2022-11-20 20:14:39,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991598245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:14:39,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:14:39,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:14:39,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746866801] [2022-11-20 20:14:39,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:14:39,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:14:39,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:14:39,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:14:39,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:14:39,620 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:14:39,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:14:39,641 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2022-11-20 20:14:39,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:14:39,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-20 20:14:39,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:14:39,651 INFO L225 Difference]: With dead ends: 45 [2022-11-20 20:14:39,652 INFO L226 Difference]: Without dead ends: 20 [2022-11-20 20:14:39,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:14:39,659 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:14:39,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:14:39,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-20 20:14:39,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-20 20:14:39,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 20:14:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-11-20 20:14:39,701 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2022-11-20 20:14:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:14:39,702 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-11-20 20:14:39,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:14:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-11-20 20:14:39,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 20:14:39,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:14:39,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:14:39,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:14:39,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:14:39,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:14:39,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:14:39,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1357563125, now seen corresponding path program 1 times [2022-11-20 20:14:39,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:14:39,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071537180] [2022-11-20 20:14:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:14:39,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:14:39,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:14:39,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:14:39,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 20:14:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:14:40,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 20:14:40,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:14:56,747 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_inductiveStepHunt_~startState#1| (_ FloatingPoint 8 24))) (and (= (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode |ULTIMATE.start_inductiveStepHunt_~startState#1| (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_inductiveStepHunt_~startState#1|)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32))))) |c_ULTIMATE.start_inductiveStepHunt_~oneAfter~0#1|) (fp.lt ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)) |ULTIMATE.start_inductiveStepHunt_~startState#1|) (not (fp.isInfinite |ULTIMATE.start_inductiveStepHunt_~startState#1|)) (not (fp.isSubnormal |ULTIMATE.start_inductiveStepHunt_~startState#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-20 20:15:16,121 WARN L837 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_inductiveStepHunt_~startState#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (and (not (fp.gt (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 16777215.0 67108864.0)))) (fp.div roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven (fp.add roundNearestTiesToEven |ULTIMATE.start_inductiveStepHunt_~startState#1| (fp.div roundNearestTiesToEven .cse0 |ULTIMATE.start_inductiveStepHunt_~startState#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))))) .cse1)) (not (fp.isInfinite |ULTIMATE.start_inductiveStepHunt_~startState#1|)) (not (fp.isSubnormal |ULTIMATE.start_inductiveStepHunt_~startState#1|)) (fp.lt .cse1 |ULTIMATE.start_inductiveStepHunt_~startState#1|)))) is different from false [2022-11-20 20:15:18,169 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_inductiveStepHunt_~startState#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (and (not (fp.gt (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 16777215.0 67108864.0)))) (fp.div roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven (fp.add roundNearestTiesToEven |ULTIMATE.start_inductiveStepHunt_~startState#1| (fp.div roundNearestTiesToEven .cse0 |ULTIMATE.start_inductiveStepHunt_~startState#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))))) .cse1)) (not (fp.isInfinite |ULTIMATE.start_inductiveStepHunt_~startState#1|)) (not (fp.isSubnormal |ULTIMATE.start_inductiveStepHunt_~startState#1|)) (fp.lt .cse1 |ULTIMATE.start_inductiveStepHunt_~startState#1|)))) is different from true [2022-11-20 20:15:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:15:18,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:15:18,170 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:15:18,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071537180] [2022-11-20 20:15:18,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071537180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:15:18,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:15:18,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:15:18,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73996678] [2022-11-20 20:15:18,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:15:18,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:15:18,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:15:18,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:15:18,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=27, Unknown=3, NotChecked=22, Total=72 [2022-11-20 20:15:18,174 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:15:20,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:15:21,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:15:21,162 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2022-11-20 20:15:21,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:15:21,163 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-20 20:15:21,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:15:21,164 INFO L225 Difference]: With dead ends: 24 [2022-11-20 20:15:21,164 INFO L226 Difference]: Without dead ends: 22 [2022-11-20 20:15:21,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=25, Invalid=36, Unknown=3, NotChecked=26, Total=90 [2022-11-20 20:15:21,166 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:15:21,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 1 Unknown, 33 Unchecked, 2.9s Time] [2022-11-20 20:15:21,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-20 20:15:21,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-20 20:15:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 20:15:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2022-11-20 20:15:21,172 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 10 [2022-11-20 20:15:21,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:15:21,172 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2022-11-20 20:15:21,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:15:21,173 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2022-11-20 20:15:21,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 20:15:21,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:15:21,174 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:15:21,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-20 20:15:21,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:15:21,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:15:21,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:15:21,383 INFO L85 PathProgramCache]: Analyzing trace with hash 723620047, now seen corresponding path program 1 times [2022-11-20 20:15:21,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:15:21,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671298069] [2022-11-20 20:15:21,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:21,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:15:21,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:15:21,389 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:15:21,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 20:15:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:21,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:15:21,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:15:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 20:15:22,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:15:22,139 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:15:22,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671298069] [2022-11-20 20:15:22,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671298069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:15:22,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:15:22,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:15:22,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080118768] [2022-11-20 20:15:22,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:15:22,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:15:22,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:15:22,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:15:22,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:15:22,142 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:15:24,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:15:24,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:15:24,971 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2022-11-20 20:15:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:15:24,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-11-20 20:15:24,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:15:24,972 INFO L225 Difference]: With dead ends: 22 [2022-11-20 20:15:24,972 INFO L226 Difference]: Without dead ends: 20 [2022-11-20 20:15:24,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:15:24,974 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:15:24,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 9 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 20:15:24,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-20 20:15:24,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-20 20:15:24,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.0) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 20:15:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2022-11-20 20:15:24,979 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 18 [2022-11-20 20:15:24,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:15:24,980 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2022-11-20 20:15:24,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:15:24,980 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2022-11-20 20:15:24,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 20:15:24,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:15:24,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:15:25,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:15:25,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:15:25,182 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:15:25,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:15:25,183 INFO L85 PathProgramCache]: Analyzing trace with hash 957389065, now seen corresponding path program 1 times [2022-11-20 20:15:25,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:15:25,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984568047] [2022-11-20 20:15:25,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:15:25,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:15:25,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:15:25,185 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:15:25,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 20:15:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:15:25,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 20:15:25,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:15:36,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:15:36,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:15:36,002 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:15:36,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984568047] [2022-11-20 20:15:36,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984568047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:15:36,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:15:36,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:15:36,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891743838] [2022-11-20 20:15:36,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:15:36,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:15:36,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:15:36,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:15:36,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:15:36,004 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 20:15:38,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:15:43,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:15:43,706 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2022-11-20 20:15:43,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:15:43,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-11-20 20:15:43,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:15:43,707 INFO L225 Difference]: With dead ends: 20 [2022-11-20 20:15:43,707 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:15:43,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:15:43,708 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:15:43,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 11 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 1 Unknown, 10 Unchecked, 3.5s Time] [2022-11-20 20:15:43,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:15:43,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:15:43,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:15:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:15:43,710 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2022-11-20 20:15:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:15:43,710 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:15:43,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 20:15:43,711 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:15:43,711 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:15:43,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-20 20:15:43,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-11-20 20:15:43,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-11-20 20:15:43,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:15:43,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:15:43,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 20:15:43,963 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 20:15:43,974 INFO L899 garLoopResultBuilder]: For program point L384(line 384) no Hoare annotation was computed. [2022-11-20 20:15:43,974 INFO L899 garLoopResultBuilder]: For program point L384-1(line 384) no Hoare annotation was computed. [2022-11-20 20:15:43,975 INFO L895 garLoopResultBuilder]: At program point L380(line 380) the Hoare annotation is: (and (= ((_ to_fp 8 24) currentRoundingMode (/ 16777215.0 67108864.0)) |ULTIMATE.start_inductiveStepHunt_~target~0#1|) (= currentRoundingMode roundNearestTiesToEven)) [2022-11-20 20:15:43,978 INFO L899 garLoopResultBuilder]: For program point L380-1(line 380) no Hoare annotation was computed. [2022-11-20 20:15:43,978 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 391) no Hoare annotation was computed. [2022-11-20 20:15:43,978 INFO L902 garLoopResultBuilder]: At program point L399(lines 394 400) the Hoare annotation is: true [2022-11-20 20:15:43,979 INFO L899 garLoopResultBuilder]: For program point L391(line 391) no Hoare annotation was computed. [2022-11-20 20:15:43,979 INFO L899 garLoopResultBuilder]: For program point L391-1(line 391) no Hoare annotation was computed. [2022-11-20 20:15:43,979 INFO L895 garLoopResultBuilder]: At program point L389(line 389) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode (/ 16777215.0 67108864.0)) |ULTIMATE.start_simplifiedInductiveStepHunt_~target~1#1|)) [2022-11-20 20:15:43,979 INFO L899 garLoopResultBuilder]: For program point L389-1(line 389) no Hoare annotation was computed. [2022-11-20 20:15:43,979 INFO L899 garLoopResultBuilder]: For program point L391-3(lines 387 393) no Hoare annotation was computed. [2022-11-20 20:15:43,980 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 20:15:43,980 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 20:15:43,980 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 20:15:43,980 INFO L899 garLoopResultBuilder]: For program point L377(lines 377 385) no Hoare annotation was computed. [2022-11-20 20:15:43,980 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 384) no Hoare annotation was computed. [2022-11-20 20:15:43,981 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 392) no Hoare annotation was computed. [2022-11-20 20:15:43,981 INFO L899 garLoopResultBuilder]: For program point L392(line 392) no Hoare annotation was computed. [2022-11-20 20:15:43,981 INFO L899 garLoopResultBuilder]: For program point L386(lines 386 393) no Hoare annotation was computed. [2022-11-20 20:15:43,981 INFO L899 garLoopResultBuilder]: For program point L3-2(lines 2 4) no Hoare annotation was computed. [2022-11-20 20:15:43,981 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 2 4) the Hoare annotation is: true [2022-11-20 20:15:43,981 INFO L899 garLoopResultBuilder]: For program point L3(line 3) no Hoare annotation was computed. [2022-11-20 20:15:43,982 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 2 4) no Hoare annotation was computed. [2022-11-20 20:15:43,985 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-20 20:15:43,993 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:15:44,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:15:43 BoogieIcfgContainer [2022-11-20 20:15:44,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:15:44,001 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:15:44,001 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:15:44,001 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:15:44,002 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:14:38" (3/4) ... [2022-11-20 20:15:44,005 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:15:44,012 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-20 20:15:44,016 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-20 20:15:44,016 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 20:15:44,017 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 20:15:44,017 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:15:44,059 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:15:44,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:15:44,060 INFO L158 Benchmark]: Toolchain (without parser) took 70106.14ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 65.7MB in the beginning and 76.3MB in the end (delta: -10.6MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2022-11-20 20:15:44,060 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 58.7MB. Free memory was 37.3MB in the beginning and 37.3MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:15:44,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1051.62ms. Allocated memory is still 86.0MB. Free memory was 65.7MB in the beginning and 47.0MB in the end (delta: 18.7MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2022-11-20 20:15:44,061 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.63ms. Allocated memory is still 86.0MB. Free memory was 47.0MB in the beginning and 44.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:15:44,061 INFO L158 Benchmark]: Boogie Preprocessor took 55.02ms. Allocated memory is still 86.0MB. Free memory was 44.5MB in the beginning and 43.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:15:44,062 INFO L158 Benchmark]: RCFGBuilder took 3793.59ms. Allocated memory is still 86.0MB. Free memory was 43.2MB in the beginning and 60.3MB in the end (delta: -17.2MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2022-11-20 20:15:44,062 INFO L158 Benchmark]: TraceAbstraction took 65055.78ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 59.4MB in the beginning and 79.1MB in the end (delta: -19.7MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. [2022-11-20 20:15:44,063 INFO L158 Benchmark]: Witness Printer took 58.46ms. Allocated memory is still 104.9MB. Free memory was 79.1MB in the beginning and 76.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 20:15:44,065 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 58.7MB. Free memory was 37.3MB in the beginning and 37.3MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1051.62ms. Allocated memory is still 86.0MB. Free memory was 65.7MB in the beginning and 47.0MB in the end (delta: 18.7MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.63ms. Allocated memory is still 86.0MB. Free memory was 47.0MB in the beginning and 44.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.02ms. Allocated memory is still 86.0MB. Free memory was 44.5MB in the beginning and 43.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 3793.59ms. Allocated memory is still 86.0MB. Free memory was 43.2MB in the beginning and 60.3MB in the end (delta: -17.2MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * TraceAbstraction took 65055.78ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 59.4MB in the beginning and 79.1MB in the end (delta: -19.7MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. * Witness Printer took 58.46ms. Allocated memory is still 104.9MB. Free memory was 79.1MB in the beginning and 76.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 384]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 391]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 392]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 64.9s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 9.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 73 SdHoareTripleChecker+Invalid, 8.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 43 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 51 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 15.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 6 PreInvPairs, 8 NumberOfFragments, 20 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 48.2s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 53 ConstructedInterpolants, 4 QuantifiedInterpolants, 321 SizeOfPredicates, 13 NumberOfNonLiveVariables, 137 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 394]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 20:15:44,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e138221f-74e0-40a0-83a9-0d5d8b94ae28/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE