./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P --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 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:18:05,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:18:05,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:18:05,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:18:05,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:18:05,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:18:05,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:18:05,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:18:05,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:18:05,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:18:05,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:18:05,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:18:05,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:18:05,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:18:05,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:18:05,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:18:05,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:18:05,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:18:05,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:18:05,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:18:05,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:18:05,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:18:05,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:18:05,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:18:05,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:18:05,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:18:05,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:18:05,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:18:05,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:18:05,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:18:05,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:18:05,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:18:05,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:18:05,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:18:05,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:18:05,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:18:05,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:18:05,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:18:05,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:18:05,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:18:05,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:18:05,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:18:05,796 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:18:05,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:18:05,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:18:05,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:18:05,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:18:05,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:18:05,798 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:18:05,799 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:18:05,799 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:18:05,799 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:18:05,799 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:18:05,799 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:18:05,799 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:18:05,800 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:18:05,800 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:18:05,800 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:18:05,800 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:18:05,800 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:18:05,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:18:05,801 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:18:05,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:18:05,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:18:05,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:18:05,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:18:05,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:18:05,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:18:05,803 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:18:05,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:18:05,803 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:18:05,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:18:05,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:18:05,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:18:05,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:18:05,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:18:05,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:18:05,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:18:05,805 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:18:05,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:18:05,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:18:05,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:18:05,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:18:05,806 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 [2021-11-21 01:18:06,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:18:06,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:18:06,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:18:06,121 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:18:06,122 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:18:06,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2021-11-21 01:18:06,184 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/data/c998407e9/bb38e76911a14464a8ad997398dc3e14/FLAG7d08095e2 [2021-11-21 01:18:06,609 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:18:06,610 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2021-11-21 01:18:06,620 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/data/c998407e9/bb38e76911a14464a8ad997398dc3e14/FLAG7d08095e2 [2021-11-21 01:18:07,045 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/data/c998407e9/bb38e76911a14464a8ad997398dc3e14 [2021-11-21 01:18:07,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:18:07,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:18:07,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:18:07,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:18:07,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:18:07,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:18:07" (1/1) ... [2021-11-21 01:18:07,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c82bf58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:07, skipping insertion in model container [2021-11-21 01:18:07,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:18:07" (1/1) ... [2021-11-21 01:18:07,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:18:07,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:18:07,279 WARN L230 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_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2021-11-21 01:18:07,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:18:07,292 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:18:07,308 WARN L230 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_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2021-11-21 01:18:07,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:18:07,321 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:18:07,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:07 WrapperNode [2021-11-21 01:18:07,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:18:07,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:18:07,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:18:07,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:18:07,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:07" (1/1) ... [2021-11-21 01:18:07,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:07" (1/1) ... [2021-11-21 01:18:07,356 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2021-11-21 01:18:07,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:18:07,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:18:07,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:18:07,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:18:07,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:07" (1/1) ... [2021-11-21 01:18:07,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:07" (1/1) ... [2021-11-21 01:18:07,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:07" (1/1) ... [2021-11-21 01:18:07,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:07" (1/1) ... [2021-11-21 01:18:07,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:07" (1/1) ... [2021-11-21 01:18:07,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:07" (1/1) ... [2021-11-21 01:18:07,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:07" (1/1) ... [2021-11-21 01:18:07,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:18:07,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:18:07,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:18:07,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:18:07,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:07" (1/1) ... [2021-11-21 01:18:07,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:18:07,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:18:07,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:18:07,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:18:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:18:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:18:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:18:07,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:18:07,517 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:18:07,518 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:18:07,619 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:18:07,653 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:18:07,653 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:18:07,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:18:07 BoogieIcfgContainer [2021-11-21 01:18:07,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:18:07,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:18:07,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:18:07,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:18:07,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:18:07" (1/3) ... [2021-11-21 01:18:07,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11120f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:18:07, skipping insertion in model container [2021-11-21 01:18:07,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:07" (2/3) ... [2021-11-21 01:18:07,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11120f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:18:07, skipping insertion in model container [2021-11-21 01:18:07,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:18:07" (3/3) ... [2021-11-21 01:18:07,668 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c.v+cfa-reducer.c [2021-11-21 01:18:07,674 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:18:07,674 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:18:07,735 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:18:07,743 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:18:07,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:18:07,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:07,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:18:07,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:07,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:07,766 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:07,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:07,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1602314196, now seen corresponding path program 1 times [2021-11-21 01:18:07,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:18:07,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025037054] [2021-11-21 01:18:07,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:07,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:18:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:18:07,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:18:07,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025037054] [2021-11-21 01:18:07,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025037054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:18:07,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:18:07,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:18:07,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238535804] [2021-11-21 01:18:07,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:18:07,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:18:07,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:18:08,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:18:08,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:18:08,020 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:08,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:08,095 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-11-21 01:18:08,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:18:08,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-21 01:18:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:08,107 INFO L225 Difference]: With dead ends: 23 [2021-11-21 01:18:08,107 INFO L226 Difference]: Without dead ends: 11 [2021-11-21 01:18:08,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:18:08,115 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:08,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 34 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:18:08,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-21 01:18:08,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-21 01:18:08,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:08,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-11-21 01:18:08,149 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2021-11-21 01:18:08,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:08,150 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-11-21 01:18:08,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:08,150 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-11-21 01:18:08,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:18:08,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:08,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:08,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:18:08,152 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:08,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:08,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1619324857, now seen corresponding path program 1 times [2021-11-21 01:18:08,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:18:08,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105838264] [2021-11-21 01:18:08,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:08,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:18:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:18:08,167 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:18:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:18:08,196 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:18:08,197 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:18:08,199 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:18:08,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:18:08,211 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-21 01:18:08,218 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:18:08,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:18:08 BoogieIcfgContainer [2021-11-21 01:18:08,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:18:08,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:18:08,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:18:08,256 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:18:08,258 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:18:07" (3/4) ... [2021-11-21 01:18:08,261 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:18:08,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:18:08,262 INFO L158 Benchmark]: Toolchain (without parser) took 1211.99ms. Allocated memory is still 107.0MB. Free memory was 63.7MB in the beginning and 42.4MB in the end (delta: 21.3MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2021-11-21 01:18:08,263 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 107.0MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:18:08,264 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.06ms. Allocated memory is still 107.0MB. Free memory was 63.5MB in the beginning and 80.4MB in the end (delta: -16.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-21 01:18:08,267 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.87ms. Allocated memory is still 107.0MB. Free memory was 80.4MB in the beginning and 78.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:18:08,268 INFO L158 Benchmark]: Boogie Preprocessor took 19.43ms. Allocated memory is still 107.0MB. Free memory was 78.8MB in the beginning and 78.0MB in the end (delta: 740.8kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 01:18:08,271 INFO L158 Benchmark]: RCFGBuilder took 278.40ms. Allocated memory is still 107.0MB. Free memory was 77.8MB in the beginning and 68.2MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:18:08,272 INFO L158 Benchmark]: TraceAbstraction took 597.47ms. Allocated memory is still 107.0MB. Free memory was 67.6MB in the beginning and 42.7MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-21 01:18:08,272 INFO L158 Benchmark]: Witness Printer took 4.83ms. Allocated memory is still 107.0MB. Free memory was 42.7MB in the beginning and 42.4MB in the end (delta: 291.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:18:08,280 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 107.0MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.06ms. Allocated memory is still 107.0MB. Free memory was 63.5MB in the beginning and 80.4MB in the end (delta: -16.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.87ms. Allocated memory is still 107.0MB. Free memory was 80.4MB in the beginning and 78.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.43ms. Allocated memory is still 107.0MB. Free memory was 78.8MB in the beginning and 78.0MB in the end (delta: 740.8kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 278.40ms. Allocated memory is still 107.0MB. Free memory was 77.8MB in the beginning and 68.2MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 597.47ms. Allocated memory is still 107.0MB. Free memory was 67.6MB in the beginning and 42.7MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.83ms. Allocated memory is still 107.0MB. Free memory was 42.7MB in the beginning and 42.4MB in the end (delta: 291.2kB). There was no memory consumed. 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 - UnprovableResult [Line: 45]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 26. Possible FailurePath: [L1] int __return_main; [L12] int __return_76; [L15] double main__x; [L16] double main__y; [L17] main__x = __VERIFIER_nondet_double() [L18] int main____CPAchecker_TMP_0; VAL [__return_76=0, __return_main=0] [L19] COND TRUE main__x >= 0.0 VAL [__return_76=0, __return_main=0] [L21] COND TRUE main__x <= 10.0 [L23] main____CPAchecker_TMP_0 = 1 VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L24] COND TRUE main____CPAchecker_TMP_0 != 0 [L26] main__y = (main__x * main__x) - main__x [L27] COND FALSE !(main__y >= 0) [L69] main__y = (main__x * main__x) + 2.0 [L31] int main____CPAchecker_TMP_1; VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L32] COND FALSE !(main__y >= 0.0) VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L58] main____CPAchecker_TMP_1 = 0 VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] [L39] int __tmp_1; [L40] __tmp_1 = main____CPAchecker_TMP_1 [L41] int __VERIFIER_assert__cond; [L42] __VERIFIER_assert__cond = __tmp_1 VAL [__return_76=0, __return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] [L43] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_76=0, __return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] [L45] reach_error() VAL [__return_76=0, __return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 11 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-21 01:18:08,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P --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 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:18:10,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:18:10,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:18:10,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:18:10,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:18:10,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:18:10,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:18:10,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:18:10,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:18:10,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:18:10,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:18:10,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:18:10,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:18:10,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:18:10,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:18:10,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:18:10,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:18:10,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:18:10,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:18:10,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:18:10,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:18:10,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:18:10,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:18:10,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:18:10,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:18:10,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:18:10,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:18:10,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:18:10,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:18:10,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:18:10,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:18:10,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:18:10,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:18:10,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:18:10,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:18:10,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:18:10,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:18:10,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:18:10,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:18:10,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:18:10,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:18:10,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:18:10,965 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:18:10,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:18:10,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:18:10,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:18:10,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:18:10,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:18:10,968 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:18:10,969 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:18:10,969 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:18:10,969 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:18:10,970 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:18:10,971 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:18:10,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:18:10,973 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:18:10,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:18:10,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:18:10,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:18:10,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:18:10,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:18:10,974 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:18:10,974 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:18:10,975 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:18:10,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:18:10,975 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:18:10,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:18:10,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:18:10,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:18:10,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:18:10,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:18:10,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:18:10,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:18:10,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:18:10,978 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:18:10,978 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:18:10,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:18:10,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:18:10,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:18:10,979 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_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 [2021-11-21 01:18:11,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:18:11,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:18:11,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:18:11,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:18:11,385 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:18:11,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2021-11-21 01:18:11,461 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/data/838f0ec0b/1d092f1c68ae4322bf0d400eac82ca6a/FLAG47668ad0f [2021-11-21 01:18:12,074 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:18:12,076 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2021-11-21 01:18:12,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/data/838f0ec0b/1d092f1c68ae4322bf0d400eac82ca6a/FLAG47668ad0f [2021-11-21 01:18:12,422 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/data/838f0ec0b/1d092f1c68ae4322bf0d400eac82ca6a [2021-11-21 01:18:12,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:18:12,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:18:12,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:18:12,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:18:12,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:18:12,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:18:12" (1/1) ... [2021-11-21 01:18:12,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7e2086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:12, skipping insertion in model container [2021-11-21 01:18:12,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:18:12" (1/1) ... [2021-11-21 01:18:12,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:18:12,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:18:12,693 WARN L230 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_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2021-11-21 01:18:12,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:18:12,717 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:18:12,742 WARN L230 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_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2021-11-21 01:18:12,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:18:12,791 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:18:12,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:12 WrapperNode [2021-11-21 01:18:12,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:18:12,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:18:12,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:18:12,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:18:12,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:12" (1/1) ... [2021-11-21 01:18:12,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:12" (1/1) ... [2021-11-21 01:18:12,849 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2021-11-21 01:18:12,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:18:12,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:18:12,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:18:12,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:18:12,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:12" (1/1) ... [2021-11-21 01:18:12,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:12" (1/1) ... [2021-11-21 01:18:12,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:12" (1/1) ... [2021-11-21 01:18:12,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:12" (1/1) ... [2021-11-21 01:18:12,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:12" (1/1) ... [2021-11-21 01:18:12,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:12" (1/1) ... [2021-11-21 01:18:12,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:12" (1/1) ... [2021-11-21 01:18:12,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:18:12,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:18:12,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:18:12,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:18:12,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:12" (1/1) ... [2021-11-21 01:18:12,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:18:12,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:18:12,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:18:12,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:18:12,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:18:12,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:18:12,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:18:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:18:13,069 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:18:13,072 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:18:17,189 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:18:17,196 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:18:17,196 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:18:17,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:18:17 BoogieIcfgContainer [2021-11-21 01:18:17,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:18:17,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:18:17,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:18:17,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:18:17,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:18:12" (1/3) ... [2021-11-21 01:18:17,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cae512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:18:17, skipping insertion in model container [2021-11-21 01:18:17,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:18:12" (2/3) ... [2021-11-21 01:18:17,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cae512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:18:17, skipping insertion in model container [2021-11-21 01:18:17,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:18:17" (3/3) ... [2021-11-21 01:18:17,206 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c.v+cfa-reducer.c [2021-11-21 01:18:17,211 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:18:17,212 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:18:17,309 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:18:17,316 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:18:17,316 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:18:17,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:17,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:18:17,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:17,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:17,368 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:17,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:17,374 INFO L85 PathProgramCache]: Analyzing trace with hash 570602568, now seen corresponding path program 1 times [2021-11-21 01:18:17,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:18:17,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039506862] [2021-11-21 01:18:17,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:17,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:18:17,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:18:17,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:18:17,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:18:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:17,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:18:17,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:18:18,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:18:18,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:18:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:18:18,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:18:18,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039506862] [2021-11-21 01:18:18,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039506862] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:18:18,191 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:18:18,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 01:18:18,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059322068] [2021-11-21 01:18:18,194 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:18:18,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:18:18,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:18:18,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:18:18,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:18:18,229 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:18,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:18,333 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-11-21 01:18:18,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:18:18,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-21 01:18:18,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:18,344 INFO L225 Difference]: With dead ends: 30 [2021-11-21 01:18:18,345 INFO L226 Difference]: Without dead ends: 14 [2021-11-21 01:18:18,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:18:18,352 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:18,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 80 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:18:18,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-21 01:18:18,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-21 01:18:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:18,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-21 01:18:18,384 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2021-11-21 01:18:18,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:18,385 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-21 01:18:18,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:18,385 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-21 01:18:18,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:18:18,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:18,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:18,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:18:18,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:18:18,598 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:18,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:18,599 INFO L85 PathProgramCache]: Analyzing trace with hash 587613229, now seen corresponding path program 1 times [2021-11-21 01:18:18,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:18:18,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394601177] [2021-11-21 01:18:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:18,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:18:18,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:18:18,612 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:18:18,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:18:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:19,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:18:19,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:18:47,964 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))))) is different from false [2021-11-21 01:18:49,987 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))))) is different from true [2021-11-21 01:19:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:19:19,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:19:28,300 WARN L838 $PredicateComparison]: unable to prove that (fp.geq (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| |c_ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (_ +zero 11 53)) is different from false [2021-11-21 01:19:30,338 WARN L860 $PredicateComparison]: unable to prove that (fp.geq (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| |c_ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (_ +zero 11 53)) is different from true [2021-11-21 01:19:48,175 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (or (fp.geq (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (_ +zero 11 53)) (not (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53))))) is different from false [2021-11-21 01:19:50,215 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (or (fp.geq (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (_ +zero 11 53)) (not (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53))))) is different from true [2021-11-21 01:19:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:19:58,120 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:19:58,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394601177] [2021-11-21 01:19:58,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394601177] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:19:58,121 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:19:58,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-21 01:19:58,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776211416] [2021-11-21 01:19:58,122 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:19:58,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:19:58,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:19:58,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:19:58,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=19, Unknown=7, NotChecked=30, Total=72 [2021-11-21 01:19:58,125 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:20:00,164 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (or (fp.geq (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (_ +zero 11 53)) (not (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)))))) is different from false [2021-11-21 01:20:03,067 WARN L838 $PredicateComparison]: unable to prove that (and (fp.geq (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| |c_ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (_ +zero 11 53)) (fp.geq |c_ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 01:20:07,066 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (= (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)))) (fp.geq |c_ULTIMATE.start_main_~main__y~0#1| (_ +zero 11 53))) is different from false [2021-11-21 01:20:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:20:07,086 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-11-21 01:20:07,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:20:07,087 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-21 01:20:07,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:20:07,087 INFO L225 Difference]: With dead ends: 21 [2021-11-21 01:20:07,088 INFO L226 Difference]: Without dead ends: 16 [2021-11-21 01:20:07,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=22, Invalid=22, Unknown=10, NotChecked=78, Total=132 [2021-11-21 01:20:07,090 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:20:07,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 30 Unchecked, 0.0s Time] [2021-11-21 01:20:07,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-21 01:20:07,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-21 01:20:07,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:20:07,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-11-21 01:20:07,096 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2021-11-21 01:20:07,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:20:07,097 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-11-21 01:20:07,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:20:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-11-21 01:20:07,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:20:07,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:20:07,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:20:07,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:20:07,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:20:07,320 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:20:07,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:20:07,321 INFO L85 PathProgramCache]: Analyzing trace with hash -125142316, now seen corresponding path program 1 times [2021-11-21 01:20:07,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:20:07,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301986236] [2021-11-21 01:20:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:20:07,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:20:07,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:20:07,323 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:20:07,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:20:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:20:07,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:20:07,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:20:19,504 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (= |c_ULTIMATE.start_main_~main__y~0#1| (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0))) (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)))) is different from false [2021-11-21 01:20:21,602 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (= |c_ULTIMATE.start_main_~main__y~0#1| (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0))) (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)))) is different from true [2021-11-21 01:20:50,693 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) (_ +zero 11 53))))) is different from false [2021-11-21 01:20:52,766 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) (_ +zero 11 53))))) is different from true [2021-11-21 01:21:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:21:36,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:21:43,416 WARN L860 $PredicateComparison]: unable to prove that (forall ((currentRoundingMode RoundingMode)) (fp.geq (fp.div currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) (_ +zero 11 53))) is different from true [2021-11-21 01:22:04,234 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (or (forall ((currentRoundingMode RoundingMode)) (fp.geq (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) (_ +zero 11 53))) (not (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53))))) is different from false [2021-11-21 01:22:06,360 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (or (forall ((currentRoundingMode RoundingMode)) (fp.geq (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) (_ +zero 11 53))) (not (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53))))) is different from true [2021-11-21 01:22:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:22:17,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:22:17,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301986236] [2021-11-21 01:22:17,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301986236] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:17,019 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:17,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-21 01:22:17,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852726544] [2021-11-21 01:22:17,020 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:17,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:22:17,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:22:17,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:22:17,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=8, Unknown=7, NotChecked=28, Total=56 [2021-11-21 01:22:17,022 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:22:19,144 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((currentRoundingMode RoundingMode)) (fp.geq (fp.div currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) (_ +zero 11 53))) (fp.geq |c_ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53))) is different from true [2021-11-21 01:22:30,521 WARN L227 SmtUtils]: Spent 7.66s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:22:30,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:30,536 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-11-21 01:22:30,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:22:30,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-21 01:22:30,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:30,538 INFO L225 Difference]: With dead ends: 21 [2021-11-21 01:22:30,538 INFO L226 Difference]: Without dead ends: 16 [2021-11-21 01:22:30,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=18, Invalid=13, Unknown=9, NotChecked=50, Total=90 [2021-11-21 01:22:30,540 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:30,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 18 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 41 Unchecked, 0.0s Time] [2021-11-21 01:22:30,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-21 01:22:30,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-11-21 01:22:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:22:30,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-21 01:22:30,546 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-11-21 01:22:30,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:30,547 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-21 01:22:30,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:22:30,547 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-21 01:22:30,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:22:30,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:30,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:22:30,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-21 01:22:30,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:22:30,754 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:22:30,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:30,755 INFO L85 PathProgramCache]: Analyzing trace with hash 519293970, now seen corresponding path program 1 times [2021-11-21 01:22:30,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:22:30,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15052468] [2021-11-21 01:22:30,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:30,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:22:30,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:22:30,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:22:30,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:22:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:31,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:22:31,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:22:45,009 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__y~0#1| (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| |c_ULTIMATE.start_main_~main__x~0#1|) |c_ULTIMATE.start_main_~main__x~0#1|)) (fp.leq |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.geq |c_ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 01:23:03,630 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|))) (and (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (not (fp.geq (fp.sub c_currentRoundingMode .cse0 |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 01:23:33,943 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|))) (and (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (= (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (not (fp.geq (fp.sub c_currentRoundingMode .cse0 |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) (fp.geq |c_ULTIMATE.start_main_~main__y~0#1| (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 01:23:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:23:35,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:23:49,815 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| |c_ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode 2.0)))) (or (not (fp.geq .cse0 (_ +zero 11 53))) (fp.geq |c_ULTIMATE.start_main_~main__y~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 105.0)))) is different from false [2021-11-21 01:24:05,105 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| |c_ULTIMATE.start_main_~main__x~0#1|))) (let ((.cse0 (fp.add c_currentRoundingMode .cse1 ((_ to_fp 11 53) c_currentRoundingMode 2.0)))) (or (not (fp.geq .cse0 (_ +zero 11 53))) (fp.geq (fp.sub c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 105.0))))) is different from false [2021-11-21 01:24:07,154 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| |c_ULTIMATE.start_main_~main__x~0#1|))) (let ((.cse0 (fp.add c_currentRoundingMode .cse1 ((_ to_fp 11 53) c_currentRoundingMode 2.0)))) (or (not (fp.geq .cse0 (_ +zero 11 53))) (fp.geq (fp.sub c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 105.0))))) is different from true [2021-11-21 01:24:13,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:24:13,450 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:24:13,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15052468] [2021-11-21 01:24:13,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15052468] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:24:13,451 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:24:13,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12 [2021-11-21 01:24:13,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105515975] [2021-11-21 01:24:13,452 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:24:13,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:24:13,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:24:13,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:24:13,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=6, NotChecked=70, Total=132 [2021-11-21 01:24:13,455 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:24:56,577 WARN L227 SmtUtils]: Spent 33.01s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:24:58,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:25:00,828 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| |c_ULTIMATE.start_main_~main__x~0#1|))) (and (= |c_ULTIMATE.start_main_~main__y~0#1| (fp.sub c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~main__x~0#1|)) (fp.leq |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (let ((.cse1 (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)))) (or (not (fp.geq .cse1 (_ +zero 11 53))) (fp.geq |c_ULTIMATE.start_main_~main__y~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 105.0)))) (fp.geq |c_ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-11-21 01:25:02,878 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| |c_ULTIMATE.start_main_~main__x~0#1|))) (and (= |c_ULTIMATE.start_main_~main__y~0#1| (fp.sub c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~main__x~0#1|)) (fp.leq |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (let ((.cse1 (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)))) (or (not (fp.geq .cse1 (_ +zero 11 53))) (fp.geq |c_ULTIMATE.start_main_~main__y~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 105.0)))) (fp.geq |c_ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-21 01:25:04,939 WARN L838 $PredicateComparison]: unable to prove that (and (or (not (fp.geq |c_ULTIMATE.start_main_~main__y~0#1| (_ +zero 11 53))) (fp.leq |c_ULTIMATE.start_main_~main__y~0#1| ((_ to_fp 11 53) c_currentRoundingMode 105.0))) (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|))) (and (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (not (fp.geq (fp.sub c_currentRoundingMode .cse0 |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 01:25:07,003 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|))) (and (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (= (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (not (fp.geq (fp.sub c_currentRoundingMode .cse0 |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) (fp.geq |c_ULTIMATE.start_main_~main__y~0#1| (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq |c_ULTIMATE.start_main_~main__y~0#1| ((_ to_fp 11 53) c_currentRoundingMode 105.0))) is different from false [2021-11-21 01:25:07,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:25:07,024 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-11-21 01:25:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:25:07,026 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 01:25:07,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:25:07,026 INFO L225 Difference]: With dead ends: 22 [2021-11-21 01:25:07,026 INFO L226 Difference]: Without dead ends: 14 [2021-11-21 01:25:07,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 65.7s TimeCoverageRelationStatistics Valid=36, Invalid=38, Unknown=14, NotChecked=152, Total=240 [2021-11-21 01:25:07,029 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:25:07,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 1 Unknown, 32 Unchecked, 2.2s Time] [2021-11-21 01:25:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-21 01:25:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-21 01:25:07,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:25:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-11-21 01:25:07,034 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2021-11-21 01:25:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:25:07,034 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-11-21 01:25:07,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:25:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-11-21 01:25:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:25:07,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:25:07,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:25:07,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-21 01:25:07,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:25:07,238 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:25:07,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:25:07,239 INFO L85 PathProgramCache]: Analyzing trace with hash -101291445, now seen corresponding path program 1 times [2021-11-21 01:25:07,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:25:07,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199540879] [2021-11-21 01:25:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:25:07,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:25:07,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:25:07,242 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:25:07,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:25:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:25:07,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:25:07,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:25:18,476 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (= |c_ULTIMATE.start_main_~main__y~0#1| (fp.div c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| .cse0)) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 01:25:36,435 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (= |c_ULTIMATE.start_main_~main__y~0#1| (fp.div c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| .cse0)) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse0)))) (fp.geq |c_ULTIMATE.start_main_~main__y~0#1| (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 01:25:51,446 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (let ((.cse0 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| .cse1))) (and (fp.geq .cse0 (_ +zero 11 53)) (not (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 105.0))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse1))))) is different from false [2021-11-21 01:25:53,532 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (let ((.cse0 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| .cse1))) (and (fp.geq .cse0 (_ +zero 11 53)) (not (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 105.0))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse1))))) is different from true [2021-11-21 01:26:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:26:37,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:26:46,717 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (or (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (not (fp.geq .cse0 (_ +zero 11 53))))) is different from false [2021-11-21 01:26:48,838 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (or (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (not (fp.geq .cse0 (_ +zero 11 53))))) is different from true [2021-11-21 01:27:10,443 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (let ((.cse0 (fp.div c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| .cse1))) (or (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (not (fp.geq .cse0 (_ +zero 11 53))) (not (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse1)))))) is different from false [2021-11-21 01:27:12,575 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (let ((.cse0 (fp.div c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| .cse1))) (or (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (not (fp.geq .cse0 (_ +zero 11 53))) (not (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse1)))))) is different from true [2021-11-21 01:27:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:27:36,426 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:27:36,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199540879] [2021-11-21 01:27:36,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199540879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:27:36,427 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:27:36,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-21 01:27:36,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177240183] [2021-11-21 01:27:36,427 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:27:36,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:27:36,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:27:36,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:27:36,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=8, NotChecked=60, Total=110 [2021-11-21 01:27:36,429 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:27:38,529 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (let ((.cse0 (fp.div c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| .cse1))) (or (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (not (fp.geq .cse0 (_ +zero 11 53))) (not (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse1)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-21 01:27:44,673 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (fp.leq |c_ULTIMATE.start_main_~main__x~0#1| .cse0) (let ((.cse1 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| .cse0))) (or (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 105.0)) (not (fp.geq .cse1 (_ +zero 11 53))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-21 01:28:13,831 WARN L227 SmtUtils]: Spent 23.48s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:28:15,963 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (= |c_ULTIMATE.start_main_~main__y~0#1| (fp.div c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| .cse0)) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse0)))) (fp.geq |c_ULTIMATE.start_main_~main__y~0#1| (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq |c_ULTIMATE.start_main_~main__y~0#1| ((_ to_fp 11 53) c_currentRoundingMode 105.0))) is different from false [2021-11-21 01:28:15,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:15,972 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-11-21 01:28:15,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:28:15,972 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 01:28:15,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:15,973 INFO L225 Difference]: With dead ends: 14 [2021-11-21 01:28:15,973 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 01:28:15,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 56.6s TimeCoverageRelationStatistics Valid=31, Invalid=30, Unknown=13, NotChecked=136, Total=210 [2021-11-21 01:28:15,974 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:15,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2021-11-21 01:28:15,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 01:28:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 01:28:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:28:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 01:28:15,977 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-11-21 01:28:15,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:15,977 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 01:28:15,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:28:15,977 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 01:28:15,978 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 01:28:15,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:28:16,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:28:16,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:28:16,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-21 01:32:14,247 WARN L227 SmtUtils]: Spent 3.97m on a formula simplification. DAG size of input: 46 DAG size of output: 41 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-21 01:32:14,250 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-21 01:32:14,251 INFO L854 garLoopResultBuilder]: At program point L64(lines 32 65) the Hoare annotation is: false [2021-11-21 01:32:14,251 INFO L858 garLoopResultBuilder]: For program point L27(lines 27 71) no Hoare annotation was computed. [2021-11-21 01:32:14,251 INFO L858 garLoopResultBuilder]: For program point L21(lines 21 81) no Hoare annotation was computed. [2021-11-21 01:32:14,251 INFO L861 garLoopResultBuilder]: At program point L85(lines 13 87) the Hoare annotation is: true [2021-11-21 01:32:14,251 INFO L858 garLoopResultBuilder]: For program point L19(lines 19 86) no Hoare annotation was computed. [2021-11-21 01:32:14,251 INFO L858 garLoopResultBuilder]: For program point L34(lines 34 60) no Hoare annotation was computed. [2021-11-21 01:32:14,251 INFO L858 garLoopResultBuilder]: For program point L32(lines 32 65) no Hoare annotation was computed. [2021-11-21 01:32:14,252 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-21 01:32:14,252 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-21 01:32:14,252 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-21 01:32:14,252 INFO L854 garLoopResultBuilder]: At program point L59(lines 34 60) the Hoare annotation is: (= |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| (_ bv1 32)) [2021-11-21 01:32:14,252 INFO L858 garLoopResultBuilder]: For program point L24(lines 24 76) no Hoare annotation was computed. [2021-11-21 01:32:14,252 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2021-11-21 01:32:14,255 INFO L858 garLoopResultBuilder]: For program point L45(line 45) no Hoare annotation was computed. [2021-11-21 01:32:14,255 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 52) no Hoare annotation was computed. [2021-11-21 01:32:14,255 INFO L854 garLoopResultBuilder]: At program point L70(lines 27 71) the Hoare annotation is: (let ((.cse1 (= currentRoundingMode roundNearestTiesToEven)) (.cse2 (fp.leq |ULTIMATE.start_main_~main__y~0#1| ((_ to_fp 11 53) currentRoundingMode 105.0)))) (or (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) currentRoundingMode 10.0))) (and (= |ULTIMATE.start_main_~main__y~0#1| (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| .cse0)) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse0)))) (or (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (= (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) |ULTIMATE.start_main_~main__y~0#1|) (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)))) (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (= |ULTIMATE.start_main_~main__y~0#1| (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0))) (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53))))) .cse1 .cse2) (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse3 (fp.mul currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|))) (and (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= (fp.add currentRoundingMode .cse3 ((_ to_fp 11 53) currentRoundingMode 2.0)) |ULTIMATE.start_main_~main__y~0#1|) (not (fp.geq (fp.sub currentRoundingMode .cse3 |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) currentRoundingMode (_ bv0 32))))))) .cse1 .cse2))) [2021-11-21 01:32:14,259 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-21 01:32:14,261 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:32:14,291 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,292 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,293 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,294 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,294 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,294 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,294 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,295 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,295 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-21 01:32:14,295 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,295 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-21 01:32:14,296 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,296 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,296 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,296 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,297 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,297 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,297 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,301 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,301 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,302 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,307 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,307 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,307 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,307 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,307 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,308 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,308 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,308 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,308 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-21 01:32:14,309 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,309 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-21 01:32:14,309 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,309 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,310 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,310 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,310 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,310 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,311 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,316 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,316 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,316 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:32:14 BoogieIcfgContainer [2021-11-21 01:32:14,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:32:14,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:32:14,319 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:32:14,319 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:32:14,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:18:17" (3/4) ... [2021-11-21 01:32:14,322 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-21 01:32:14,332 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-21 01:32:14,332 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-21 01:32:14,332 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-21 01:32:14,333 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-21 01:32:14,361 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((\exists ULTIMATE.start_main_~main__x~0#1 : C_DOUBLE :: main__y == ~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ULTIMATE.start_main_~main__x~0#1, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 10.0)) && ~fp.leq~DOUBLE(ULTIMATE.start_main_~main__x~0#1, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 10.0))) && ((\exists ULTIMATE.start_main_~main__x~0#1 : C_DOUBLE :: ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.mul~DOUBLE(~roundNearestTiesToEven, ULTIMATE.start_main_~main__x~0#1, ULTIMATE.start_main_~main__x~0#1), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 2.0)) == main__y && ~fp.geq~DOUBLE(ULTIMATE.start_main_~main__x~0#1, ~Pluszero~LONGDOUBLE())) || (\exists ULTIMATE.start_main_~main__x~0#1 : C_DOUBLE, currentRoundingMode : FloatRoundingMode :: main__y == ~fp.div~DOUBLE(currentRoundingMode, ULTIMATE.start_main_~main__x~0#1, ~to_fp~LONGDOUBLE(currentRoundingMode, 10.0)) && ~fp.geq~DOUBLE(ULTIMATE.start_main_~main__x~0#1, ~Pluszero~LONGDOUBLE())))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.leq~DOUBLE(main__y, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 105.0))) || (((\exists ULTIMATE.start_main_~main__x~0#1 : C_DOUBLE :: ((~fp.leq~DOUBLE(ULTIMATE.start_main_~main__x~0#1, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 10.0)) && ~fp.geq~DOUBLE(ULTIMATE.start_main_~main__x~0#1, ~Pluszero~LONGDOUBLE())) && ~fp.add~DOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~DOUBLE(unknown-currentRoundingMode-unknown, ULTIMATE.start_main_~main__x~0#1, ULTIMATE.start_main_~main__x~0#1), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2.0)) == main__y) && !~fp.geq~DOUBLE(~fp.sub~DOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~DOUBLE(unknown-currentRoundingMode-unknown, ULTIMATE.start_main_~main__x~0#1, ULTIMATE.start_main_~main__x~0#1), ULTIMATE.start_main_~main__x~0#1), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 0bv32))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.leq~DOUBLE(main__y, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 105.0))) [2021-11-21 01:32:14,380 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:32:14,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:32:14,381 INFO L158 Benchmark]: Toolchain (without parser) took 841955.12ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 31.0MB in the beginning and 47.6MB in the end (delta: -16.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:32:14,381 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 54.5MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:32:14,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.31ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 30.8MB in the beginning and 52.2MB in the end (delta: -21.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:32:14,383 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.10ms. Allocated memory is still 69.2MB. Free memory was 52.2MB in the beginning and 50.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:32:14,383 INFO L158 Benchmark]: Boogie Preprocessor took 38.96ms. Allocated memory is still 69.2MB. Free memory was 50.7MB in the beginning and 49.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:32:14,384 INFO L158 Benchmark]: RCFGBuilder took 4307.33ms. Allocated memory is still 69.2MB. Free memory was 49.4MB in the beginning and 40.7MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:32:14,384 INFO L158 Benchmark]: TraceAbstraction took 837117.64ms. Allocated memory is still 69.2MB. Free memory was 40.2MB in the beginning and 50.5MB in the end (delta: -10.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-21 01:32:14,385 INFO L158 Benchmark]: Witness Printer took 61.82ms. Allocated memory is still 69.2MB. Free memory was 50.5MB in the beginning and 47.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:32:14,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 54.5MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 350.31ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 30.8MB in the beginning and 52.2MB in the end (delta: -21.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.10ms. Allocated memory is still 69.2MB. Free memory was 52.2MB in the beginning and 50.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.96ms. Allocated memory is still 69.2MB. Free memory was 50.7MB in the beginning and 49.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 4307.33ms. Allocated memory is still 69.2MB. Free memory was 49.4MB in the beginning and 40.7MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 837117.64ms. Allocated memory is still 69.2MB. Free memory was 40.2MB in the beginning and 50.5MB in the end (delta: -10.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 61.82ms. Allocated memory is still 69.2MB. Free memory was 50.5MB in the beginning and 47.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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: 45]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 837.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 115.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 238.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 160 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 119 IncrementalHoareTripleChecker+Unchecked, 113 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 47 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 27 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 180.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 30, 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, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 102 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 56 FormulaSimplificationTreeSizeReductionInter, 238.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 479.6s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 114 ConstructedInterpolants, 32 QuantifiedInterpolants, 998 SizeOfPredicates, 18 NumberOfNonLiveVariables, 163 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: main____CPAchecker_TMP_1 == 1bv32 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant [2021-11-21 01:32:14,423 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,423 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,424 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,424 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,424 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,425 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,425 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,425 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,430 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-21 01:32:14,430 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,431 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-21 01:32:14,431 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,431 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,431 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,431 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,432 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,432 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,433 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,434 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,434 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,435 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,436 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,441 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,441 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,442 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,442 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,442 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,442 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,443 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,443 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-21 01:32:14,443 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,443 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-21 01:32:14,444 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,444 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-21 01:32:14,444 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,444 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,444 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,445 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,445 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,446 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,446 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__x~0#1,QUANTIFIED] [2021-11-21 01:32:14,446 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((((\exists ULTIMATE.start_main_~main__x~0#1 : C_DOUBLE :: main__y == ~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ULTIMATE.start_main_~main__x~0#1, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 10.0)) && ~fp.leq~DOUBLE(ULTIMATE.start_main_~main__x~0#1, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 10.0))) && ((\exists ULTIMATE.start_main_~main__x~0#1 : C_DOUBLE :: ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.mul~DOUBLE(~roundNearestTiesToEven, ULTIMATE.start_main_~main__x~0#1, ULTIMATE.start_main_~main__x~0#1), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 2.0)) == main__y && ~fp.geq~DOUBLE(ULTIMATE.start_main_~main__x~0#1, ~Pluszero~LONGDOUBLE())) || (\exists ULTIMATE.start_main_~main__x~0#1 : C_DOUBLE, currentRoundingMode : FloatRoundingMode :: main__y == ~fp.div~DOUBLE(currentRoundingMode, ULTIMATE.start_main_~main__x~0#1, ~to_fp~LONGDOUBLE(currentRoundingMode, 10.0)) && ~fp.geq~DOUBLE(ULTIMATE.start_main_~main__x~0#1, ~Pluszero~LONGDOUBLE())))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.leq~DOUBLE(main__y, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 105.0))) || (((\exists ULTIMATE.start_main_~main__x~0#1 : C_DOUBLE :: ((~fp.leq~DOUBLE(ULTIMATE.start_main_~main__x~0#1, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 10.0)) && ~fp.geq~DOUBLE(ULTIMATE.start_main_~main__x~0#1, ~Pluszero~LONGDOUBLE())) && ~fp.add~DOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~DOUBLE(unknown-currentRoundingMode-unknown, ULTIMATE.start_main_~main__x~0#1, ULTIMATE.start_main_~main__x~0#1), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2.0)) == main__y) && !~fp.geq~DOUBLE(~fp.sub~DOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~DOUBLE(unknown-currentRoundingMode-unknown, ULTIMATE.start_main_~main__x~0#1, ULTIMATE.start_main_~main__x~0#1), ULTIMATE.start_main_~main__x~0#1), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 0bv32))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.leq~DOUBLE(main__y, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 105.0))) RESULT: Ultimate proved your program to be correct! [2021-11-21 01:32:14,689 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-21 01:32:14,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fd1de15-ef46-4a2a-94f1-ebd5d7ec4715/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE