./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW --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 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:58:22,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:58:22,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:58:22,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:58:22,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:58:22,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:58:22,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:58:22,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:58:22,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:58:22,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:58:22,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:58:22,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:58:22,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:58:22,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:58:22,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:58:22,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:58:22,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:58:22,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:58:22,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:58:22,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:58:22,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:58:22,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:58:22,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:58:22,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:58:22,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:58:22,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:58:22,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:58:22,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:58:22,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:58:22,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:58:22,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:58:22,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:58:22,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:58:22,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:58:22,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:58:22,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:58:22,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:58:22,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:58:22,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:58:22,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:58:22,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:58:22,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:58:22,752 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:58:22,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:58:22,753 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:58:22,753 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:58:22,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:58:22,760 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:58:22,760 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:58:22,761 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:58:22,761 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:58:22,761 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:58:22,762 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:58:22,762 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:58:22,762 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:58:22,762 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:58:22,763 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:58:22,763 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:58:22,763 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:58:22,764 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:58:22,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:58:22,765 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:58:22,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:58:22,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:58:22,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:58:22,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:58:22,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:58:22,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:58:22,767 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:58:22,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:58:22,768 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:58:22,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:58:22,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:58:22,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:58:22,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:58:22,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:58:22,770 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:58:22,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:58:22,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:58:22,770 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:58:22,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:58:22,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:58:22,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:58:22,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e [2022-11-23 15:58:23,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:58:23,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:58:23,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:58:23,035 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:58:23,035 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:58:23,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2022-11-23 15:58:26,115 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:58:26,373 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:58:26,374 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2022-11-23 15:58:26,380 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/data/d9e9c2174/6e522747b1fb4793ae156be7942df471/FLAG0608558a7 [2022-11-23 15:58:26,395 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/data/d9e9c2174/6e522747b1fb4793ae156be7942df471 [2022-11-23 15:58:26,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:58:26,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:58:26,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:58:26,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:58:26,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:58:26,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:58:26" (1/1) ... [2022-11-23 15:58:26,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d84d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:26, skipping insertion in model container [2022-11-23 15:58:26,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:58:26" (1/1) ... [2022-11-23 15:58:26,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:58:26,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:58:26,588 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2022-11-23 15:58:26,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:58:26,607 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:58:26,634 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2022-11-23 15:58:26,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:58:26,661 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:58:26,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:26 WrapperNode [2022-11-23 15:58:26,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:58:26,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:58:26,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:58:26,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:58:26,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:26" (1/1) ... [2022-11-23 15:58:26,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:26" (1/1) ... [2022-11-23 15:58:26,706 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2022-11-23 15:58:26,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:58:26,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:58:26,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:58:26,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:58:26,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:26" (1/1) ... [2022-11-23 15:58:26,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:26" (1/1) ... [2022-11-23 15:58:26,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:26" (1/1) ... [2022-11-23 15:58:26,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:26" (1/1) ... [2022-11-23 15:58:26,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:26" (1/1) ... [2022-11-23 15:58:26,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:26" (1/1) ... [2022-11-23 15:58:26,747 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:26" (1/1) ... [2022-11-23 15:58:26,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:26" (1/1) ... [2022-11-23 15:58:26,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:58:26,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:58:26,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:58:26,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:58:26,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:26" (1/1) ... [2022-11-23 15:58:26,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:58:26,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:58:26,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:58:26,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:58:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:58:26,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:58:26,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:58:26,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:58:26,919 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:58:26,922 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:58:27,124 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:58:27,160 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:58:27,160 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:58:27,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:58:27 BoogieIcfgContainer [2022-11-23 15:58:27,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:58:27,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:58:27,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:58:27,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:58:27,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:58:26" (1/3) ... [2022-11-23 15:58:27,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db4456c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:58:27, skipping insertion in model container [2022-11-23 15:58:27,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:26" (2/3) ... [2022-11-23 15:58:27,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db4456c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:58:27, skipping insertion in model container [2022-11-23 15:58:27,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:58:27" (3/3) ... [2022-11-23 15:58:27,185 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.p+cfa-reducer.c [2022-11-23 15:58:27,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:58:27,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:58:27,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:58:27,300 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c550c0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:58:27,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:58:27,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:58:27,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 15:58:27,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:58:27,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:58:27,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:58:27,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:58:27,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1394921896, now seen corresponding path program 1 times [2022-11-23 15:58:27,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:58:27,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330798968] [2022-11-23 15:58:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:27,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:58:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:58:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:58:27,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:58:27,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330798968] [2022-11-23 15:58:27,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330798968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:58:27,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:58:27,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:58:27,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299456395] [2022-11-23 15:58:27,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:58:27,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:58:27,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:58:27,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:58:27,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:58:27,755 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 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 2.6) internal successors, (13), 5 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) [2022-11-23 15:58:27,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:58:27,951 INFO L93 Difference]: Finished difference Result 89 states and 129 transitions. [2022-11-23 15:58:27,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:58:27,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-23 15:58:27,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:58:27,962 INFO L225 Difference]: With dead ends: 89 [2022-11-23 15:58:27,962 INFO L226 Difference]: Without dead ends: 73 [2022-11-23 15:58:27,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:58:27,968 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 120 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:58:27,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 129 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:58:27,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-23 15:58:28,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 19. [2022-11-23 15:58:28,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:58:28,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2022-11-23 15:58:28,005 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 13 [2022-11-23 15:58:28,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:58:28,006 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-11-23 15:58:28,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2022-11-23 15:58:28,006 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2022-11-23 15:58:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 15:58:28,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:58:28,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:58:28,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:58:28,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:58:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:58:28,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1411932557, now seen corresponding path program 1 times [2022-11-23 15:58:28,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:58:28,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453669237] [2022-11-23 15:58:28,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:28,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:58:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:58:28,042 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:58:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:58:28,107 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:58:28,107 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:58:28,109 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:58:28,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:58:28,119 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 15:58:28,123 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:58:28,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:58:28 BoogieIcfgContainer [2022-11-23 15:58:28,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:58:28,169 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:58:28,169 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:58:28,169 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:58:28,170 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:58:27" (3/4) ... [2022-11-23 15:58:28,174 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:58:28,174 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:58:28,175 INFO L158 Benchmark]: Toolchain (without parser) took 1775.77ms. Allocated memory is still 146.8MB. Free memory was 113.1MB in the beginning and 52.4MB in the end (delta: 60.6MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2022-11-23 15:58:28,176 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 146.8MB. Free memory is still 116.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:58:28,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.78ms. Allocated memory is still 146.8MB. Free memory was 112.6MB in the beginning and 102.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 15:58:28,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.76ms. Allocated memory is still 146.8MB. Free memory was 102.1MB in the beginning and 100.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:58:28,181 INFO L158 Benchmark]: Boogie Preprocessor took 49.96ms. Allocated memory is still 146.8MB. Free memory was 100.6MB in the beginning and 99.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:58:28,184 INFO L158 Benchmark]: RCFGBuilder took 417.49ms. Allocated memory is still 146.8MB. Free memory was 99.0MB in the beginning and 87.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 15:58:28,184 INFO L158 Benchmark]: TraceAbstraction took 991.15ms. Allocated memory is still 146.8MB. Free memory was 86.5MB in the beginning and 52.9MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-23 15:58:28,185 INFO L158 Benchmark]: Witness Printer took 5.18ms. Allocated memory is still 146.8MB. Free memory was 52.9MB in the beginning and 52.4MB in the end (delta: 478.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:58:28,192 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 146.8MB. Free memory is still 116.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.78ms. Allocated memory is still 146.8MB. Free memory was 112.6MB in the beginning and 102.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.76ms. Allocated memory is still 146.8MB. Free memory was 102.1MB in the beginning and 100.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.96ms. Allocated memory is still 146.8MB. Free memory was 100.6MB in the beginning and 99.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 417.49ms. Allocated memory is still 146.8MB. Free memory was 99.0MB in the beginning and 87.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 991.15ms. Allocated memory is still 146.8MB. Free memory was 86.5MB in the beginning and 52.9MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 5.18ms. Allocated memory is still 146.8MB. Free memory was 52.9MB in the beginning and 52.4MB in the end (delta: 478.9kB). 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: 66]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 48, overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 20, overapproximation of someBinaryArithmeticFLOAToperation at line 47. Possible FailurePath: [L1] int __return_main; [L14] float main__X; [L15] float main__Y; [L16] float main__S; [L17] float main__R; [L18] float main__D; [L19] int main__i; [L20] main__Y = 0 [L21] main__i = 0 VAL [__return_main=0, main__i=0] [L23] COND TRUE main__i < 100000 [L25] main__X = __VERIFIER_nondet_float() [L26] main__D = __VERIFIER_nondet_float() [L27] int main____CPAchecker_TMP_0; VAL [__return_main=0, main__D=53, main__i=0, main__X=54] [L28] COND TRUE main__X >= -128.0 VAL [__return_main=0, main__D=53, main__i=0, main__X=54] [L30] COND TRUE main__X <= 128.0 [L32] main____CPAchecker_TMP_0 = 1 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__D=53, main__i=0, main__X=54] [L34] COND TRUE main____CPAchecker_TMP_0 != 0 [L36] int main____CPAchecker_TMP_1; VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__D=53, main__i=0, main__X=54] [L37] COND TRUE main__D >= 0.0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__D=53, main__i=0, main__X=54] [L39] COND TRUE main__D <= 16.0 [L41] main____CPAchecker_TMP_1 = 1 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=53, main__i=0, main__X=54] [L43] COND TRUE main____CPAchecker_TMP_1 != 0 [L45] main__S = main__Y [L46] main__Y = main__X [L47] main__R = main__X - main__S [L48] COND TRUE main__R <= (-main__D) [L50] main__Y = main__S - main__D [L52] int main____CPAchecker_TMP_2; VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] [L53] COND FALSE !(main__Y >= -129.0) VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] [L79] main____CPAchecker_TMP_2 = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] [L60] int __tmp_1; [L61] __tmp_1 = main____CPAchecker_TMP_2 [L62] int __VERIFIER_assert__cond; [L63] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] [L64] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] [L66] reach_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=53, main__i=0, main__S=55, main__X=54, main__Y=54] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 120 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 120 mSDsluCounter, 129 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 89 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 40 mSDtfsCounter, 47 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 54 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 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 [2022-11-23 15:58:28,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW --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 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:58:30,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:58:30,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:58:30,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:58:30,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:58:30,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:58:30,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:58:30,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:58:30,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:58:30,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:58:30,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:58:30,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:58:30,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:58:30,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:58:30,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:58:30,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:58:30,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:58:30,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:58:30,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:58:30,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:58:30,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:58:30,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:58:30,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:58:30,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:58:30,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:58:30,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:58:30,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:58:30,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:58:30,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:58:30,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:58:30,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:58:30,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:58:30,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:58:30,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:58:30,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:58:30,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:58:30,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:58:30,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:58:30,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:58:30,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:58:30,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:58:30,863 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-23 15:58:30,907 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:58:30,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:58:30,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:58:30,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:58:30,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:58:30,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:58:30,911 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:58:30,911 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:58:30,912 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:58:30,912 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:58:30,913 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:58:30,913 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:58:30,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:58:30,914 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:58:30,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:58:30,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:58:30,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:58:30,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:58:30,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:58:30,916 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:58:30,916 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:58:30,917 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:58:30,917 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:58:30,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:58:30,917 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:58:30,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:58:30,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:58:30,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:58:30,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:58:30,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:58:30,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:58:30,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:58:30,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:58:30,920 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:58:30,920 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:58:30,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:58:30,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:58:30,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:58:30,921 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_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e [2022-11-23 15:58:31,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:58:31,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:58:31,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:58:31,343 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:58:31,344 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:58:31,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2022-11-23 15:58:34,506 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:58:34,771 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:58:34,771 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2022-11-23 15:58:34,777 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/data/f9e6bccdd/53c886d2f6c84538b0dd8f4660fa7720/FLAG9a5e6cd15 [2022-11-23 15:58:34,791 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/data/f9e6bccdd/53c886d2f6c84538b0dd8f4660fa7720 [2022-11-23 15:58:34,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:58:34,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:58:34,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:58:34,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:58:34,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:58:34,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:58:34" (1/1) ... [2022-11-23 15:58:34,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c593e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:34, skipping insertion in model container [2022-11-23 15:58:34,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:58:34" (1/1) ... [2022-11-23 15:58:34,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:58:34,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:58:34,995 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2022-11-23 15:58:35,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:58:35,021 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:58:35,039 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2022-11-23 15:58:35,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:58:35,057 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:58:35,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:35 WrapperNode [2022-11-23 15:58:35,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:58:35,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:58:35,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:58:35,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:58:35,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:35" (1/1) ... [2022-11-23 15:58:35,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:35" (1/1) ... [2022-11-23 15:58:35,119 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-11-23 15:58:35,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:58:35,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:58:35,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:58:35,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:58:35,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:35" (1/1) ... [2022-11-23 15:58:35,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:35" (1/1) ... [2022-11-23 15:58:35,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:35" (1/1) ... [2022-11-23 15:58:35,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:35" (1/1) ... [2022-11-23 15:58:35,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:35" (1/1) ... [2022-11-23 15:58:35,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:35" (1/1) ... [2022-11-23 15:58:35,160 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:35" (1/1) ... [2022-11-23 15:58:35,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:35" (1/1) ... [2022-11-23 15:58:35,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:58:35,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:58:35,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:58:35,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:58:35,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:35" (1/1) ... [2022-11-23 15:58:35,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:58:35,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:58:35,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:58:35,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:58:35,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:58:35,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 15:58:35,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:58:35,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:58:35,409 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:58:35,411 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:58:36,449 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:58:36,455 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:58:36,455 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:58:36,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:58:36 BoogieIcfgContainer [2022-11-23 15:58:36,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:58:36,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:58:36,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:58:36,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:58:36,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:58:34" (1/3) ... [2022-11-23 15:58:36,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c93e6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:58:36, skipping insertion in model container [2022-11-23 15:58:36,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:35" (2/3) ... [2022-11-23 15:58:36,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c93e6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:58:36, skipping insertion in model container [2022-11-23 15:58:36,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:58:36" (3/3) ... [2022-11-23 15:58:36,465 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.p+cfa-reducer.c [2022-11-23 15:58:36,484 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:58:36,484 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:58:36,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:58:36,534 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7c33716d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:58:36,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:58:36,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:58:36,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 15:58:36,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:58:36,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:58:36,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:58:36,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:58:36,552 INFO L85 PathProgramCache]: Analyzing trace with hash -34829450, now seen corresponding path program 1 times [2022-11-23 15:58:36,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:58:36,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088166402] [2022-11-23 15:58:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:36,563 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:58:36,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:58:36,568 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:58:36,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 15:58:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:58:36,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:58:36,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:58:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:58:36,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:58:36,799 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:58:36,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088166402] [2022-11-23 15:58:36,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088166402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:58:36,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:58:36,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:58:36,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505818674] [2022-11-23 15:58:36,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:58:36,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:58:36,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:58:36,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:58:36,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:58:36,846 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:58:36,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:58:36,924 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2022-11-23 15:58:36,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:58:36,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-23 15:58:36,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:58:36,935 INFO L225 Difference]: With dead ends: 51 [2022-11-23 15:58:36,935 INFO L226 Difference]: Without dead ends: 40 [2022-11-23 15:58:36,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:58:36,941 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 53 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:58:36,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 122 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:58:36,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-23 15:58:36,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2022-11-23 15:58:36,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:58:36,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2022-11-23 15:58:36,997 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 16 [2022-11-23 15:58:36,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:58:36,998 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2022-11-23 15:58:36,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:58:36,998 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-11-23 15:58:36,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 15:58:36,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:58:36,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:58:37,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:58:37,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:58:37,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:58:37,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:58:37,205 INFO L85 PathProgramCache]: Analyzing trace with hash -17818789, now seen corresponding path program 1 times [2022-11-23 15:58:37,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:58:37,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146589312] [2022-11-23 15:58:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:58:37,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:58:37,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:58:37,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:58:37,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 15:58:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:58:37,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:58:37,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:58:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:58:44,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:58:44,247 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:58:44,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146589312] [2022-11-23 15:58:44,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146589312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:58:44,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:58:44,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:58:44,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849855660] [2022-11-23 15:58:44,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:58:44,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:58:44,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:58:44,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:58:44,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:58:44,251 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:58:46,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:58:51,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:58:58,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:59:01,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:59:05,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:59:09,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:59:11,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:59:14,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:59:15,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:59:18,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:59:21,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:59:22,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:59:23,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:23,126 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2022-11-23 15:59:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:59:23,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-23 15:59:23,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:23,134 INFO L225 Difference]: With dead ends: 104 [2022-11-23 15:59:23,134 INFO L226 Difference]: Without dead ends: 83 [2022-11-23 15:59:23,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:59:23,135 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 76 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:23,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 97 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 8 Unknown, 0 Unchecked, 34.6s Time] [2022-11-23 15:59:23,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-23 15:59:23,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 34. [2022-11-23 15:59:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:59:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2022-11-23 15:59:23,147 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 16 [2022-11-23 15:59:23,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:23,147 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2022-11-23 15:59:23,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:59:23,148 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2022-11-23 15:59:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 15:59:23,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:23,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:59:23,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:59:23,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:59:23,350 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:59:23,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:23,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1271663018, now seen corresponding path program 1 times [2022-11-23 15:59:23,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:59:23,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771232764] [2022-11-23 15:59:23,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:23,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:59:23,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:59:23,353 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:59:23,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 15:59:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:23,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:59:23,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:59:23,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:59:23,474 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:59:23,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771232764] [2022-11-23 15:59:23,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771232764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:23,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:23,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:59:23,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88519422] [2022-11-23 15:59:23,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:23,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:59:23,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:59:23,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:59:23,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:59:23,484 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:59:23,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:23,607 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2022-11-23 15:59:23,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:59:23,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-23 15:59:23,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:23,613 INFO L225 Difference]: With dead ends: 56 [2022-11-23 15:59:23,613 INFO L226 Difference]: Without dead ends: 33 [2022-11-23 15:59:23,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:59:23,615 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:23,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:59:23,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-23 15:59:23,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-23 15:59:23,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:59:23,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-11-23 15:59:23,623 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 16 [2022-11-23 15:59:23,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:23,623 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-11-23 15:59:23,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:59:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-11-23 15:59:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:59:23,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:23,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:59:23,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:59:23,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:59:23,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:59:23,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:23,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1069421883, now seen corresponding path program 1 times [2022-11-23 15:59:23,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:59:23,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035185893] [2022-11-23 15:59:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:23,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:59:23,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:59:23,842 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:59:23,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-23 15:59:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:23,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:59:23,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:28,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:59:28,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:59:28,895 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:59:28,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035185893] [2022-11-23 15:59:28,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035185893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:28,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:28,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:59:28,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943064346] [2022-11-23 15:59:28,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:28,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:59:28,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:59:28,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:59:28,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:59:28,897 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 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) [2022-11-23 15:59:43,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:43,537 INFO L93 Difference]: Finished difference Result 83 states and 105 transitions. [2022-11-23 15:59:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:59:43,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 15:59:43,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:43,550 INFO L225 Difference]: With dead ends: 83 [2022-11-23 15:59:43,550 INFO L226 Difference]: Without dead ends: 63 [2022-11-23 15:59:43,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:59:43,551 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 94 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:43,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 52 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2022-11-23 15:59:43,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-23 15:59:43,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 34. [2022-11-23 15:59:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:59:43,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2022-11-23 15:59:43,560 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 17 [2022-11-23 15:59:43,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:43,561 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2022-11-23 15:59:43,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 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) [2022-11-23 15:59:43,561 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2022-11-23 15:59:43,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:59:43,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:43,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:59:43,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:59:43,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:59:43,789 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:59:43,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:43,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1450538051, now seen corresponding path program 1 times [2022-11-23 15:59:43,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:59:43,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40891635] [2022-11-23 15:59:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:43,791 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:59:43,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:59:43,792 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:59:43,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 15:59:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:43,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:59:43,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:59:48,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:59:48,266 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:59:48,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40891635] [2022-11-23 15:59:48,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40891635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:48,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:48,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:59:48,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912054460] [2022-11-23 15:59:48,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:48,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:59:48,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:59:48,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:59:48,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:59:48,268 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:59:59,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 16:00:09,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:09,727 INFO L93 Difference]: Finished difference Result 128 states and 160 transitions. [2022-11-23 16:00:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 16:00:09,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 16:00:09,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:09,739 INFO L225 Difference]: With dead ends: 128 [2022-11-23 16:00:09,740 INFO L226 Difference]: Without dead ends: 108 [2022-11-23 16:00:09,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:00:09,741 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 66 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:09,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 64 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 17.8s Time] [2022-11-23 16:00:09,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-23 16:00:09,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 49. [2022-11-23 16:00:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3125) internal successors, (63), 48 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2022-11-23 16:00:09,752 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 17 [2022-11-23 16:00:09,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:09,753 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2022-11-23 16:00:09,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2022-11-23 16:00:09,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 16:00:09,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:09,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:09,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:09,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 16:00:09,955 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:09,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:09,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1069229389, now seen corresponding path program 1 times [2022-11-23 16:00:09,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:00:09,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370200655] [2022-11-23 16:00:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:09,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 16:00:09,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:00:09,958 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 16:00:09,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-23 16:00:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:10,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 16:00:10,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:19,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:00:19,351 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:00:19,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370200655] [2022-11-23 16:00:19,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370200655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:19,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:19,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 16:00:19,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163361627] [2022-11-23 16:00:19,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:19,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 16:00:19,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:00:19,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 16:00:19,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:00:19,353 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 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) [2022-11-23 16:00:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:32,445 INFO L93 Difference]: Finished difference Result 109 states and 136 transitions. [2022-11-23 16:00:32,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 16:00:32,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 16:00:32,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:32,455 INFO L225 Difference]: With dead ends: 109 [2022-11-23 16:00:32,455 INFO L226 Difference]: Without dead ends: 80 [2022-11-23 16:00:32,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-23 16:00:32,456 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 89 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:32,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 36 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-11-23 16:00:32,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-23 16:00:32,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 49. [2022-11-23 16:00:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3125) internal successors, (63), 48 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:32,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2022-11-23 16:00:32,466 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 17 [2022-11-23 16:00:32,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:32,466 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2022-11-23 16:00:32,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 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) [2022-11-23 16:00:32,467 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2022-11-23 16:00:32,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 16:00:32,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:32,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:32,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-23 16:00:32,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 16:00:32,676 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:32,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:32,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1175383176, now seen corresponding path program 1 times [2022-11-23 16:00:32,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:00:32,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441610043] [2022-11-23 16:00:32,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:32,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 16:00:32,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:00:32,679 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 16:00:32,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-23 16:00:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:32,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 16:00:32,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:32,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:00:32,767 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:00:32,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441610043] [2022-11-23 16:00:32,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441610043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:32,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:32,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:00:32,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996320089] [2022-11-23 16:00:32,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:32,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:00:32,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:00:32,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:00:32,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:00:32,770 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2022-11-23 16:00:32,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:32,830 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2022-11-23 16:00:32,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:00:32,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 16:00:32,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:32,832 INFO L225 Difference]: With dead ends: 75 [2022-11-23 16:00:32,832 INFO L226 Difference]: Without dead ends: 35 [2022-11-23 16:00:32,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:00:32,833 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:32,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:00:32,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-23 16:00:32,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-23 16:00:32,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:32,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-11-23 16:00:32,841 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 17 [2022-11-23 16:00:32,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:32,841 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-11-23 16:00:32,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2022-11-23 16:00:32,842 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-11-23 16:00:32,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 16:00:32,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:32,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:32,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-23 16:00:33,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 16:00:33,056 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:33,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:33,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1724506925, now seen corresponding path program 1 times [2022-11-23 16:00:33,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:00:33,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156370856] [2022-11-23 16:00:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:33,057 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 16:00:33,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:00:33,058 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 16:00:33,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 16:00:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:33,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 16:00:33,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:41,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:00:41,722 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:00:41,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156370856] [2022-11-23 16:00:41,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156370856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:41,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:41,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 16:00:41,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056793833] [2022-11-23 16:00:41,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:41,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 16:00:41,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:00:41,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 16:00:41,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:00:41,724 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 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) [2022-11-23 16:00:53,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 16:00:58,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:58,202 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2022-11-23 16:00:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 16:00:58,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-23 16:00:58,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:58,213 INFO L225 Difference]: With dead ends: 73 [2022-11-23 16:00:58,213 INFO L226 Difference]: Without dead ends: 51 [2022-11-23 16:00:58,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-23 16:00:58,214 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 62 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:58,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 62 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2022-11-23 16:00:58,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-23 16:00:58,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2022-11-23 16:00:58,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:58,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-23 16:00:58,220 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 18 [2022-11-23 16:00:58,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:58,221 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-23 16:00:58,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 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) [2022-11-23 16:00:58,221 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-23 16:00:58,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 16:00:58,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:58,222 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:58,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:58,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 16:00:58,422 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:58,423 INFO L85 PathProgramCache]: Analyzing trace with hash -66815887, now seen corresponding path program 1 times [2022-11-23 16:00:58,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:00:58,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854238992] [2022-11-23 16:00:58,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:58,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 16:00:58,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:00:58,424 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 16:00:58,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-23 16:00:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:58,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 16:00:58,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:02:25,100 WARN L837 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_8| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_12| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_12|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_12|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq .cse2 .cse1) (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_8| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_12|)) (fp.geq .cse0 (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse2 (_ +zero 11 53))))) is different from false [2022-11-23 16:02:27,116 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_8| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_12| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_12|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_12|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq .cse2 .cse1) (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_8| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_12|)) (fp.geq .cse0 (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse2 (_ +zero 11 53))))) is different from true [2022-11-23 16:03:49,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 2 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-23 16:03:49,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:04:49,387 WARN L233 SmtUtils]: Spent 8.48s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:06:26,992 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (or (forall ((|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~main__D~0#1|))) (or (not (fp.geq .cse0 (_ +zero 11 53))) (not (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 16.0))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1| |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg .cse1)) (forall ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|))))))) (not (fp.leq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1|) .cse1)))) is different from true [2022-11-23 16:06:44,265 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (let ((.cse1 (fp.neg .cse3)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1|))) (or (forall ((|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~main__D~0#1|))) (or (not (fp.geq .cse0 (_ +zero 11 53))) (not (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 16.0))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1| |ULTIMATE.start_main_~main__D~0#1|)) .cse1) (forall ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|))))))) (not (fp.geq .cse2 .cse1)) (not (fp.leq .cse2 .cse3))))) is different from true [2022-11-23 16:07:20,249 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode 129.0)) (.cse1 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__S~0#1| |c_ULTIMATE.start_main_~main__D~0#1|))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode .cse1)) (.cse2 (fp.neg .cse4))) (or (forall ((|v_ULTIMATE.start_main_~main__D~0#1_14| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__R~0#1_10| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_14|))) (or (not (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_10| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_14|))) (not (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 16.0))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode .cse1 |v_ULTIMATE.start_main_~main__D~0#1_14|)) .cse2) (not (fp.geq .cse0 (_ +zero 11 53)))))) (not (fp.leq .cse3 .cse4)) (not (fp.geq .cse3 .cse2)) (forall ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |c_ULTIMATE.start_main_~main__D~0#1|))))))) is different from true [2022-11-23 16:07:41,309 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 129.0)) (.cse3 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1| |c_ULTIMATE.start_main_~main__D~0#1|))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode .cse3)) (.cse2 (fp.neg .cse1))) (or (not (fp.leq .cse0 .cse1)) (not (fp.geq .cse0 .cse2)) (forall ((|v_ULTIMATE.start_main_~main__D~0#1_14| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__R~0#1_10| (_ FloatingPoint 8 24))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_14|))) (or (not (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_10| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_14|))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode .cse3 |v_ULTIMATE.start_main_~main__D~0#1_14|)) .cse2) (not (fp.leq .cse4 ((_ to_fp 11 53) c_currentRoundingMode 16.0))) (not (fp.geq .cse4 (_ +zero 11 53)))))) (forall ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |c_ULTIMATE.start_main_~main__D~0#1|))))))) is different from true [2022-11-23 16:08:07,455 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 129.0)) (.cse4 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1| |c_ULTIMATE.start_main_~main__D~0#1|))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode .cse4)) (.cse3 (fp.neg .cse1)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 16.0))) (or (not (fp.leq .cse0 .cse1)) (not (fp.leq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__D~0#1|) .cse2)) (not (fp.geq .cse0 .cse3)) (forall ((|v_ULTIMATE.start_main_~main__D~0#1_14| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__R~0#1_10| (_ FloatingPoint 8 24))) (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_14|))) (or (not (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_10| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_14|))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode .cse4 |v_ULTIMATE.start_main_~main__D~0#1_14|)) .cse3) (not (fp.leq .cse5 .cse2)) (not (fp.geq .cse5 (_ +zero 11 53)))))) (forall ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |c_ULTIMATE.start_main_~main__D~0#1|))))))) is different from true [2022-11-23 16:08:32,064 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode 129.0)) (.cse0 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1| |ULTIMATE.start_main_~main__D~0#1|))) (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~main__D~0#1|)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode 16.0)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode .cse0)) (.cse1 (fp.neg .cse5))) (or (forall ((|v_ULTIMATE.start_main_~main__D~0#1_14| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__R~0#1_10| (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_14|))) (or (not (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_10| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_14|))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~main__D~0#1_14|)) .cse1) (not (fp.leq .cse2 .cse3)) (not (fp.geq .cse2 (_ +zero 11 53)))))) (not (fp.leq .cse4 .cse5)) (not (fp.geq .cse6 (_ +zero 11 53))) (not (fp.leq .cse6 .cse3)) (not (fp.geq .cse4 .cse1)) (forall ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)))))))) is different from false [2022-11-23 16:08:34,096 WARN L859 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24))) (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode 129.0)) (.cse0 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~main__Y~0#1| |ULTIMATE.start_main_~main__D~0#1|))) (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~main__D~0#1|)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode 16.0)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode .cse0)) (.cse1 (fp.neg .cse5))) (or (forall ((|v_ULTIMATE.start_main_~main__D~0#1_14| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__R~0#1_10| (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_14|))) (or (not (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_10| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_14|))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~main__D~0#1_14|)) .cse1) (not (fp.leq .cse2 .cse3)) (not (fp.geq .cse2 (_ +zero 11 53)))))) (not (fp.leq .cse4 .cse5)) (not (fp.geq .cse6 (_ +zero 11 53))) (not (fp.leq .cse6 .cse3)) (not (fp.geq .cse4 .cse1)) (forall ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)))))))) is different from true [2022-11-23 16:10:45,472 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~main__D~0#1_14| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__R~0#1_10| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~main__D~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 16.0)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_14|))) (or (not (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_10| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_14|))) (not (fp.geq .cse0 (_ +zero 11 53))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)) |ULTIMATE.start_main_~main__D~0#1|) |v_ULTIMATE.start_main_~main__D~0#1_14|)) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (not (fp.leq .cse1 .cse2)) (not (fp.leq .cse0 .cse2)) (not (fp.geq .cse1 (_ +zero 11 53))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)))))) is different from false [2022-11-23 16:10:47,494 WARN L859 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~main__D~0#1_14| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__R~0#1_10| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_main_~main__D~0#1|)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 16.0)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~main__D~0#1_14|))) (or (not (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_10| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_14|))) (not (fp.geq .cse0 (_ +zero 11 53))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)) |ULTIMATE.start_main_~main__D~0#1|) |v_ULTIMATE.start_main_~main__D~0#1_14|)) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (not (fp.leq .cse1 .cse2)) (not (fp.leq .cse0 .cse2)) (not (fp.geq .cse1 (_ +zero 11 53))) (not (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)))))) is different from true [2022-11-23 16:10:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-23 16:10:47,495 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:10:47,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854238992] [2022-11-23 16:10:47,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854238992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:47,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [72989410] [2022-11-23 16:10:47,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:47,496 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:10:47,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:10:47,524 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:10:47,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2183ca1d-2ba7-4ba1-b09d-355e91a87953/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-23 16:10:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:48,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 16:10:48,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:12:24,567 WARN L837 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_12| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_12|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_12|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_12|)) (fp.leq .cse2 .cse1) (fp.geq .cse0 (_ +zero 11 53)) (fp.geq .cse2 (_ +zero 11 53))))) is different from false [2022-11-23 16:12:26,585 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_12| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_12|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq .cse0 .cse1) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_12|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_12|)) (fp.leq .cse2 .cse1) (fp.geq .cse0 (_ +zero 11 53)) (fp.geq .cse2 (_ +zero 11 53))))) is different from true [2022-11-23 16:13:38,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 2 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-23 16:13:38,916 INFO L328 TraceCheckSpWp]: Computing backward predicates...