./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/drift_tenth.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/drift_tenth.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur --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 cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 --- 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-38b53e6 [2022-11-26 01:07:26,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:07:26,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:07:26,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:07:26,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:07:26,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:07:26,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:07:26,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:07:26,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:07:26,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:07:26,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:07:26,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:07:26,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:07:26,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:07:26,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:07:26,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:07:26,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:07:26,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:07:26,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:07:26,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:07:26,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:07:26,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:07:26,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:07:26,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:07:26,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:07:26,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:07:26,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:07:26,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:07:26,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:07:26,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:07:26,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:07:26,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:07:26,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:07:26,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:07:26,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:07:26,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:07:26,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:07:26,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:07:26,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:07:26,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:07:26,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:07:26,775 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 01:07:26,801 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:07:26,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:07:26,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:07:26,802 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:07:26,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:07:26,803 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:07:26,803 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:07:26,803 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:07:26,803 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:07:26,803 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:07:26,804 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:07:26,804 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:07:26,804 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:07:26,804 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:07:26,804 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:07:26,805 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:07:26,805 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:07:26,805 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:07:26,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:07:26,806 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 01:07:26,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:07:26,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 01:07:26,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:07:26,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:07:26,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:07:26,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:07:26,807 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 01:07:26,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:07:26,808 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:07:26,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:07:26,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:07:26,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:07:26,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:07:26,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:07:26,809 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:07:26,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:07:26,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:07:26,809 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:07:26,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:07:26,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:07:26,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:07:26,810 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_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 [2022-11-26 01:07:27,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:07:27,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:07:27,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:07:27,086 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:07:27,087 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:07:27,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/float-benchs/drift_tenth.c [2022-11-26 01:07:30,284 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:07:30,555 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:07:30,556 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/sv-benchmarks/c/float-benchs/drift_tenth.c [2022-11-26 01:07:30,563 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/data/f4b5d75e7/19ca1fe7c2ca4d5592603d03e3c6aec0/FLAG390078262 [2022-11-26 01:07:30,580 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/data/f4b5d75e7/19ca1fe7c2ca4d5592603d03e3c6aec0 [2022-11-26 01:07:30,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:07:30,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:07:30,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:07:30,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:07:30,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:07:30,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:07:30" (1/1) ... [2022-11-26 01:07:30,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c67d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:30, skipping insertion in model container [2022-11-26 01:07:30,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:07:30" (1/1) ... [2022-11-26 01:07:30,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:07:30,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:07:30,811 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_63d2d185-4887-42c5-a99b-2ab0b57d761f/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2022-11-26 01:07:30,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:07:30,838 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:07:30,852 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_63d2d185-4887-42c5-a99b-2ab0b57d761f/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2022-11-26 01:07:30,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:07:30,870 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:07:30,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:30 WrapperNode [2022-11-26 01:07:30,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:07:30,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:07:30,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:07:30,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:07:30,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:30" (1/1) ... [2022-11-26 01:07:30,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:30" (1/1) ... [2022-11-26 01:07:30,906 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2022-11-26 01:07:30,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:07:30,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:07:30,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:07:30,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:07:30,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:30" (1/1) ... [2022-11-26 01:07:30,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:30" (1/1) ... [2022-11-26 01:07:30,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:30" (1/1) ... [2022-11-26 01:07:30,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:30" (1/1) ... [2022-11-26 01:07:30,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:30" (1/1) ... [2022-11-26 01:07:30,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:30" (1/1) ... [2022-11-26 01:07:30,931 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:30" (1/1) ... [2022-11-26 01:07:30,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:30" (1/1) ... [2022-11-26 01:07:30,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:07:30,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:07:30,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:07:30,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:07:30,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:30" (1/1) ... [2022-11-26 01:07:30,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:07:30,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:07:30,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:07:31,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:07:31,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:07:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:07:31,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:07:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:07:31,104 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:07:31,106 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:07:31,227 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:07:31,257 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:07:31,257 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 01:07:31,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:07:31 BoogieIcfgContainer [2022-11-26 01:07:31,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:07:31,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:07:31,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:07:31,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:07:31,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:07:30" (1/3) ... [2022-11-26 01:07:31,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2abd1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:07:31, skipping insertion in model container [2022-11-26 01:07:31,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:30" (2/3) ... [2022-11-26 01:07:31,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2abd1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:07:31, skipping insertion in model container [2022-11-26 01:07:31,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:07:31" (3/3) ... [2022-11-26 01:07:31,273 INFO L112 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2022-11-26 01:07:31,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:07:31,299 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 01:07:31,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:07:31,362 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;@704ef67f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:07:31,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 01:07:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-26 01:07:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:07:31,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:31,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:07:31,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:07:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:31,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1912039, now seen corresponding path program 1 times [2022-11-26 01:07:31,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:31,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439625343] [2022-11-26 01:07:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:31,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:31,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:07:31,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439625343] [2022-11-26 01:07:31,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439625343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:07:31,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:07:31,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:07:31,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766768448] [2022-11-26 01:07:31,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:07:31,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:07:31,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:07:31,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:07:31,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:07:31,791 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-26 01:07:31,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:07:31,843 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2022-11-26 01:07:31,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:07:31,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-26 01:07:31,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:07:31,860 INFO L225 Difference]: With dead ends: 13 [2022-11-26 01:07:31,861 INFO L226 Difference]: Without dead ends: 6 [2022-11-26 01:07:31,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:07:31,877 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:07:31,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:07:31,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-11-26 01:07:31,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-11-26 01:07:31,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2022-11-26 01:07:31,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-11-26 01:07:31,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-11-26 01:07:31,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:07:31,923 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-11-26 01:07:31,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-26 01:07:31,924 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-11-26 01:07:31,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 01:07:31,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:31,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 01:07:31,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:07:31,926 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:07:31,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:31,928 INFO L85 PathProgramCache]: Analyzing trace with hash 59200132, now seen corresponding path program 1 times [2022-11-26 01:07:31,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:31,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218301428] [2022-11-26 01:07:31,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:31,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:32,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:07:32,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218301428] [2022-11-26 01:07:32,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218301428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:07:32,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342285423] [2022-11-26 01:07:32,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:32,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:07:32,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:07:32,116 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:07:32,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 01:07:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:32,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:07:32,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:07:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:32,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:07:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:32,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342285423] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:07:32,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [948284852] [2022-11-26 01:07:32,367 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-26 01:07:32,367 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:07:32,372 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:07:32,379 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:07:32,381 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:07:32,742 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:07:32,908 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '69#(and (<= 10 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:07:32,908 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:07:32,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:07:32,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-26 01:07:32,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292611600] [2022-11-26 01:07:32,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:07:32,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 01:07:32,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:07:32,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 01:07:32,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-26 01:07:32,916 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-26 01:07:32,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:07:32,936 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2022-11-26 01:07:32,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:07:32,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 5 [2022-11-26 01:07:32,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:07:32,937 INFO L225 Difference]: With dead ends: 12 [2022-11-26 01:07:32,938 INFO L226 Difference]: Without dead ends: 9 [2022-11-26 01:07:32,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-26 01:07:32,941 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:07:32,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:07:32,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-26 01:07:32,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-26 01:07:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:32,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 01:07:32,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-26 01:07:32,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:07:32,950 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 01:07:32,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-26 01:07:32,950 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 01:07:32,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 01:07:32,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:32,951 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-26 01:07:32,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-26 01:07:33,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:07:33,158 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:07:33,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:33,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1672991705, now seen corresponding path program 2 times [2022-11-26 01:07:33,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:33,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931049608] [2022-11-26 01:07:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:33,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:33,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:07:33,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931049608] [2022-11-26 01:07:33,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931049608] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:07:33,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932052010] [2022-11-26 01:07:33,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:07:33,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:07:33,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:07:33,327 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:07:33,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 01:07:33,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-26 01:07:33,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:07:33,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-26 01:07:33,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:07:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:33,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:07:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:33,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932052010] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:07:33,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [101977887] [2022-11-26 01:07:33,545 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-26 01:07:33,545 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:07:33,546 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:07:33,546 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:07:33,546 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:07:33,694 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:07:33,819 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '158#(and (<= 10 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:07:33,819 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:07:33,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:07:33,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-26 01:07:33,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533972644] [2022-11-26 01:07:33,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:07:33,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 01:07:33,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:07:33,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 01:07:33,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2022-11-26 01:07:33,823 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 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) [2022-11-26 01:07:33,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:07:33,875 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-11-26 01:07:33,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 01:07:33,876 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 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 8 [2022-11-26 01:07:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:07:33,877 INFO L225 Difference]: With dead ends: 18 [2022-11-26 01:07:33,877 INFO L226 Difference]: Without dead ends: 15 [2022-11-26 01:07:33,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2022-11-26 01:07:33,884 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:07:33,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:07:33,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-26 01:07:33,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-26 01:07:33,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-26 01:07:33,900 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-26 01:07:33,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:07:33,902 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-26 01:07:33,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 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) [2022-11-26 01:07:33,903 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-26 01:07:33,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 01:07:33,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:33,904 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2022-11-26 01:07:33,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-26 01:07:34,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:07:34,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:07:34,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:34,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1912037625, now seen corresponding path program 3 times [2022-11-26 01:07:34,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:34,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705698496] [2022-11-26 01:07:34,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:34,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:07:34,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:07:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:07:34,158 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 01:07:34,158 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:07:34,159 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 01:07:34,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 01:07:34,166 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-26 01:07:34,170 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 01:07:34,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 01:07:34 BoogieIcfgContainer [2022-11-26 01:07:34,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 01:07:34,197 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 01:07:34,197 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 01:07:34,198 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 01:07:34,198 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:07:31" (3/4) ... [2022-11-26 01:07:34,202 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 01:07:34,202 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 01:07:34,202 INFO L158 Benchmark]: Toolchain (without parser) took 3617.10ms. Allocated memory is still 157.3MB. Free memory was 127.5MB in the beginning and 75.6MB in the end (delta: 51.9MB). Peak memory consumption was 53.2MB. Max. memory is 16.1GB. [2022-11-26 01:07:34,203 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 71.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:07:34,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.51ms. Allocated memory is still 157.3MB. Free memory was 127.2MB in the beginning and 117.3MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-26 01:07:34,203 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.97ms. Allocated memory is still 157.3MB. Free memory was 117.3MB in the beginning and 116.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 01:07:34,204 INFO L158 Benchmark]: Boogie Preprocessor took 25.67ms. Allocated memory is still 157.3MB. Free memory was 115.7MB in the beginning and 114.9MB in the end (delta: 764.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:07:34,204 INFO L158 Benchmark]: RCFGBuilder took 326.60ms. Allocated memory is still 157.3MB. Free memory was 114.6MB in the beginning and 104.6MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-26 01:07:34,205 INFO L158 Benchmark]: TraceAbstraction took 2932.97ms. Allocated memory is still 157.3MB. Free memory was 104.1MB in the beginning and 75.6MB in the end (delta: 28.5MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2022-11-26 01:07:34,205 INFO L158 Benchmark]: Witness Printer took 4.68ms. Allocated memory is still 157.3MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:07:34,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 71.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.51ms. Allocated memory is still 157.3MB. Free memory was 127.2MB in the beginning and 117.3MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.97ms. Allocated memory is still 157.3MB. Free memory was 117.3MB in the beginning and 116.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.67ms. Allocated memory is still 157.3MB. Free memory was 115.7MB in the beginning and 114.9MB in the end (delta: 764.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 326.60ms. Allocated memory is still 157.3MB. Free memory was 114.6MB in the beginning and 104.6MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2932.97ms. Allocated memory is still 157.3MB. Free memory was 104.1MB in the beginning and 75.6MB in the end (delta: 28.5MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * Witness Printer took 4.68ms. Allocated memory is still 157.3MB. Free memory is still 75.6MB. 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: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 15. Possible FailurePath: [L10] float tick = 1.f / 10.f; [L11] float time = 0.f; [L12] int i; [L14] i = 0 VAL [i=0, time=0] [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ VAL [i=1] [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ VAL [i=2] [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ VAL [i=3] [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ VAL [i=4] [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ VAL [i=5] [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ VAL [i=6] [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ VAL [i=7] [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ VAL [i=8] [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ VAL [i=9] [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ VAL [i=10] [L14] COND FALSE !(i < 10) [L17] CALL __VERIFIER_assert(time != 1.0) [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 7 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, InterpolantAutomatonStates: 21, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 SizeOfPredicates, 0 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 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 [2022-11-26 01:07:34,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/drift_tenth.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur --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 cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 --- 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-38b53e6 [2022-11-26 01:07:37,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:07:37,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:07:37,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:07:37,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:07:37,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:07:37,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:07:37,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:07:37,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:07:37,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:07:37,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:07:37,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:07:37,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:07:37,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:07:37,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:07:37,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:07:37,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:07:37,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:07:37,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:07:37,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:07:37,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:07:37,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:07:37,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:07:37,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:07:37,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:07:37,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:07:37,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:07:37,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:07:37,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:07:37,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:07:37,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:07:37,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:07:37,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:07:37,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:07:37,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:07:37,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:07:37,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:07:37,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:07:37,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:07:37,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:07:37,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:07:37,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-26 01:07:37,372 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:07:37,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:07:37,374 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:07:37,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:07:37,376 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:07:37,376 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:07:37,376 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:07:37,376 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:07:37,377 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:07:37,377 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:07:37,378 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:07:37,379 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:07:37,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:07:37,380 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 01:07:37,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 01:07:37,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:07:37,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:07:37,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:07:37,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:07:37,382 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 01:07:37,382 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 01:07:37,382 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 01:07:37,382 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 01:07:37,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:07:37,383 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:07:37,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:07:37,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:07:37,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 01:07:37,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:07:37,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:07:37,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:07:37,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:07:37,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:07:37,386 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 01:07:37,386 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 01:07:37,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:07:37,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:07:37,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 01:07:37,387 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_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbe9305dfa705c6adeb45241a85cbda41a40d96daaf057706b199b2a64bbcd77 [2022-11-26 01:07:37,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:07:37,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:07:37,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:07:37,880 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:07:37,881 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:07:37,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/float-benchs/drift_tenth.c [2022-11-26 01:07:41,441 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:07:41,636 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:07:41,637 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/sv-benchmarks/c/float-benchs/drift_tenth.c [2022-11-26 01:07:41,644 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/data/4bd326f5f/5fb2389ee1bb4c5eb0aaab0fbd77205a/FLAG01d4bafe6 [2022-11-26 01:07:41,667 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/data/4bd326f5f/5fb2389ee1bb4c5eb0aaab0fbd77205a [2022-11-26 01:07:41,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:07:41,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:07:41,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:07:41,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:07:41,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:07:41,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:07:41" (1/1) ... [2022-11-26 01:07:41,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206f8bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:41, skipping insertion in model container [2022-11-26 01:07:41,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:07:41" (1/1) ... [2022-11-26 01:07:41,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:07:41,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:07:41,874 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_63d2d185-4887-42c5-a99b-2ab0b57d761f/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2022-11-26 01:07:41,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:07:41,907 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:07:41,922 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_63d2d185-4887-42c5-a99b-2ab0b57d761f/sv-benchmarks/c/float-benchs/drift_tenth.c[348,361] [2022-11-26 01:07:41,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:07:41,942 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:07:41,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:41 WrapperNode [2022-11-26 01:07:41,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:07:41,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:07:41,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:07:41,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:07:41,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:41" (1/1) ... [2022-11-26 01:07:41,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:41" (1/1) ... [2022-11-26 01:07:42,010 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2022-11-26 01:07:42,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:07:42,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:07:42,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:07:42,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:07:42,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:41" (1/1) ... [2022-11-26 01:07:42,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:41" (1/1) ... [2022-11-26 01:07:42,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:41" (1/1) ... [2022-11-26 01:07:42,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:41" (1/1) ... [2022-11-26 01:07:42,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:41" (1/1) ... [2022-11-26 01:07:42,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:41" (1/1) ... [2022-11-26 01:07:42,062 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:41" (1/1) ... [2022-11-26 01:07:42,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:41" (1/1) ... [2022-11-26 01:07:42,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:07:42,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:07:42,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:07:42,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:07:42,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:41" (1/1) ... [2022-11-26 01:07:42,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:07:42,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:07:42,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:07:42,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:07:42,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:07:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:07:42,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:07:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 01:07:42,287 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:07:42,290 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:07:42,520 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:07:42,527 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:07:42,528 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 01:07:42,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:07:42 BoogieIcfgContainer [2022-11-26 01:07:42,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:07:42,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:07:42,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:07:42,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:07:42,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:07:41" (1/3) ... [2022-11-26 01:07:42,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295b1b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:07:42, skipping insertion in model container [2022-11-26 01:07:42,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:41" (2/3) ... [2022-11-26 01:07:42,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295b1b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:07:42, skipping insertion in model container [2022-11-26 01:07:42,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:07:42" (3/3) ... [2022-11-26 01:07:42,554 INFO L112 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2022-11-26 01:07:42,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:07:42,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 01:07:42,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:07:42,664 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;@49e5059f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:07:42,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 01:07:42,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:42,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 01:07:42,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:42,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 01:07:42,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:07:42,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:42,694 INFO L85 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2022-11-26 01:07:42,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:07:42,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82739265] [2022-11-26 01:07:42,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:42,713 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 [2022-11-26 01:07:42,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:07:42,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:07:42,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:07:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:42,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-26 01:07:42,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:07:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:42,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:07:42,983 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:07:42,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82739265] [2022-11-26 01:07:42,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82739265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:07:42,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:07:42,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:07:42,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840372701] [2022-11-26 01:07:42,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:07:42,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:07:43,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:07:43,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:07:43,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:07:43,048 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-26 01:07:43,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:07:43,286 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-11-26 01:07:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:07:43,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-26 01:07:43,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:07:43,303 INFO L225 Difference]: With dead ends: 22 [2022-11-26 01:07:43,303 INFO L226 Difference]: Without dead ends: 10 [2022-11-26 01:07:43,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:07:43,311 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:07:43,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 01:07:43,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-26 01:07:43,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-11-26 01:07:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:43,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 01:07:43,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2022-11-26 01:07:43,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:07:43,360 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 01:07:43,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-26 01:07:43,361 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 01:07:43,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 01:07:43,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:43,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:07:43,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:07:43,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:07:43,578 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:07:43,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:43,579 INFO L85 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2022-11-26 01:07:43,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:07:43,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333206472] [2022-11-26 01:07:43,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:43,580 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 [2022-11-26 01:07:43,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:07:43,597 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:07:43,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:07:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:43,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:07:43,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:07:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:43,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:07:43,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:43,793 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:07:43,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333206472] [2022-11-26 01:07:43,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333206472] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:07:43,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [998075312] [2022-11-26 01:07:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:43,795 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 01:07:43,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 01:07:43,798 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 01:07:43,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-26 01:07:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:43,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:07:43,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:07:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:44,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:07:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:44,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [998075312] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:07:44,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156050281] [2022-11-26 01:07:44,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:44,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:07:44,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:07:44,044 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:07:44,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 01:07:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:44,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 01:07:44,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:07:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:44,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:07:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:44,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156050281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:07:44,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 01:07:44,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2022-11-26 01:07:44,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921130903] [2022-11-26 01:07:44,202 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 01:07:44,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 01:07:44,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:07:44,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 01:07:44,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-26 01:07:44,205 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-11-26 01:07:44,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:07:44,514 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-11-26 01:07:44,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:07:44,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 8 [2022-11-26 01:07:44,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:07:44,519 INFO L225 Difference]: With dead ends: 19 [2022-11-26 01:07:44,519 INFO L226 Difference]: Without dead ends: 15 [2022-11-26 01:07:44,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-26 01:07:44,521 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:07:44,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 01:07:44,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-26 01:07:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-26 01:07:44,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-26 01:07:44,528 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-26 01:07:44,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:07:44,528 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-26 01:07:44,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-11-26 01:07:44,529 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-26 01:07:44,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 01:07:44,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:44,529 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2022-11-26 01:07:44,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-26 01:07:44,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-26 01:07:44,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 01:07:45,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:07:45,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:07:45,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:45,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1745754443, now seen corresponding path program 2 times [2022-11-26 01:07:45,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:07:45,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163662728] [2022-11-26 01:07:45,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 01:07:45,153 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 [2022-11-26 01:07:45,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:07:45,154 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:07:45,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:07:45,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 01:07:45,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:07:45,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-26 01:07:45,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:07:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:54,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:08:36,181 WARN L859 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2022-11-26 01:08:45,140 WARN L859 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2022-11-26 01:08:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-26 01:08:46,082 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:08:46,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163662728] [2022-11-26 01:08:46,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163662728] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:08:46,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [469015537] [2022-11-26 01:08:46,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 01:08:46,083 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 01:08:46,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 01:08:46,088 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 01:08:46,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-26 01:08:46,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 01:08:46,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:08:46,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-26 01:08:46,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:08:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:08:49,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:09:06,359 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-26 01:09:06,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [469015537] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:09:06,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088430467] [2022-11-26 01:09:06,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 01:09:06,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:09:06,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:09:06,364 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:09:06,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 01:09:06,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 01:09:06,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:09:06,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-26 01:09:06,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:09:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:09:18,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:09:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:09:31,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088430467] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:09:31,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 01:09:31,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 7, 7] total 25 [2022-11-26 01:09:31,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17236526] [2022-11-26 01:09:31,764 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 01:09:31,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-26 01:09:31,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:09:31,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-26 01:09:31,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=8, NotChecked=86, Total=600 [2022-11-26 01:09:31,768 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 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) [2022-11-26 01:09:33,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 01:09:56,756 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 25 DAG size of output: 18 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:08,494 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 25 DAG size of output: 18 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:18,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:10:51,254 WARN L233 SmtUtils]: Spent 13.21s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:52,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:11:28,265 WARN L233 SmtUtils]: Spent 17.11s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:11:29,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:11:31,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:11:49,452 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:11:52,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:12:23,393 WARN L233 SmtUtils]: Spent 9.26s on a formula simplification. DAG size of input: 30 DAG size of output: 21 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:12:25,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:12:27,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:12:35,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:12:49,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:12:58,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:13:00,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:13:01,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:13:03,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:13:06,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:13:07,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 01:13:07,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:13:07,787 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-11-26 01:13:07,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 01:13:07,804 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 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 14 [2022-11-26 01:13:07,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:13:07,805 INFO L225 Difference]: With dead ends: 31 [2022-11-26 01:13:07,805 INFO L226 Difference]: Without dead ends: 27 [2022-11-26 01:13:07,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 245.7s TimeCoverageRelationStatistics Valid=358, Invalid=1186, Unknown=24, NotChecked=154, Total=1722 [2022-11-26 01:13:07,807 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 24 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 36.5s IncrementalHoareTripleChecker+Time [2022-11-26 01:13:07,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 28 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 6 Unknown, 35 Unchecked, 36.5s Time] [2022-11-26 01:13:07,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-26 01:13:07,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-26 01:13:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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) [2022-11-26 01:13:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-11-26 01:13:07,815 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-11-26 01:13:07,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:13:07,815 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-11-26 01:13:07,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 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) [2022-11-26 01:13:07,816 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-11-26 01:13:07,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 01:13:07,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:13:07,817 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2022-11-26 01:13:07,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:13:08,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-26 01:13:08,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-26 01:13:08,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:13:08,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:13:08,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:13:08,419 INFO L85 PathProgramCache]: Analyzing trace with hash -95702975, now seen corresponding path program 3 times [2022-11-26 01:13:08,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:13:08,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779854867] [2022-11-26 01:13:08,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:13:08,420 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 [2022-11-26 01:13:08,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:13:08,422 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:13:08,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:13:08,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-26 01:13:08,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:13:08,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-26 01:13:08,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:14:33,949 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:15:24,455 WARN L233 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:15:38,712 WARN L837 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~tick~0#1| (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0))) (= (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~time~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-26 01:16:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 54 refuted. 27 times theorem prover too weak. 0 trivial. 19 not checked. [2022-11-26 01:16:45,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:17:57,129 WARN L859 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2022-11-26 01:18:07,608 WARN L859 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2022-11-26 01:18:17,250 WARN L837 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2022-11-26 01:18:19,281 WARN L859 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2022-11-26 01:18:29,252 WARN L859 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2022-11-26 01:18:39,440 WARN L837 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2022-11-26 01:18:51,590 WARN L837 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2022-11-26 01:18:53,636 WARN L859 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2022-11-26 01:19:03,876 WARN L837 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2022-11-26 01:19:05,925 WARN L859 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2022-11-26 01:19:17,902 WARN L859 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~time~0#1| |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|) |c_ULTIMATE.start_main_~tick~0#1|)) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2022-11-26 01:19:24,039 WARN L837 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from false [2022-11-26 01:19:26,080 WARN L859 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) ((_ to_fp 8 24) c_currentRoundingMode 10.0)))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (_ +zero 8 24) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0))) ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2022-11-26 01:19:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 94 not checked. [2022-11-26 01:19:26,081 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:19:26,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779854867] [2022-11-26 01:19:26,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779854867] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:19:26,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2088209589] [2022-11-26 01:19:26,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:19:26,082 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 01:19:26,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 01:19:26,083 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 01:19:26,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-26 01:19:26,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-26 01:19:26,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:19:26,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-26 01:19:26,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:20:19,556 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 54 refuted. 27 times theorem prover too weak. 0 trivial. 19 not checked. [2022-11-26 01:20:19,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:21:22,020 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 94 not checked. [2022-11-26 01:21:22,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2088209589] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:21:22,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605045242] [2022-11-26 01:21:22,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:21:22,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:21:22,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:21:22,023 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:21:22,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d2d185-4887-42c5-a99b-2ab0b57d761f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-26 01:21:24,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-26 01:21:24,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:21:24,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-26 01:21:24,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:22:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 54 refuted. 27 times theorem prover too weak. 0 trivial. 19 not checked. [2022-11-26 01:22:14,760 INFO L328 TraceCheckSpWp]: Computing backward predicates...