./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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_e72a197e-c101-4c03-a95f-2933aa6878ed/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 d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 --- 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 [2022-11-25 22:32:32,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:32:32,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:32:32,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:32:32,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:32:32,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:32:32,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:32:32,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:32:32,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:32:32,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:32:32,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:32:32,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:32:32,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:32:32,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:32:32,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:32:32,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:32:32,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:32:32,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:32:32,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:32:32,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:32:32,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:32:32,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:32:32,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:32:32,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:32:32,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:32:32,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:32:32,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:32:32,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:32:32,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:32:32,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:32:32,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:32:32,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:32:32,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:32:32,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:32:32,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:32:32,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:32:32,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:32:32,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:32:32,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:32:32,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:32:32,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:32:32,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:32:32,829 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:32:32,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:32:32,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:32:32,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:32:32,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:32:32,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:32:32,831 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:32:32,831 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:32:32,831 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:32:32,832 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:32:32,832 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:32:32,832 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:32:32,832 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:32:32,832 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:32:32,833 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:32:32,833 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:32:32,833 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:32:32,833 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:32:32,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:32:32,834 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:32:32,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:32:32,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:32:32,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:32:32,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:32:32,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:32:32,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:32:32,835 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:32:32,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:32:32,836 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:32:32,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:32:32,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:32:32,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:32:32,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:32:32,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:32:32,837 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:32:32,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:32:32,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:32:32,838 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:32:32,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:32:32,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:32:32,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:32:32,839 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_e72a197e-c101-4c03-a95f-2933aa6878ed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 [2022-11-25 22:32:33,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:32:33,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:32:33,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:32:33,136 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:32:33,136 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:32:33,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-11-25 22:32:36,201 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:32:36,453 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:32:36,454 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-11-25 22:32:36,462 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/data/74817bd59/0ca240bc28fe4a669adf45c38a82cc51/FLAGc5c037114 [2022-11-25 22:32:36,484 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/data/74817bd59/0ca240bc28fe4a669adf45c38a82cc51 [2022-11-25 22:32:36,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:32:36,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:32:36,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:32:36,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:32:36,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:32:36,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:32:36" (1/1) ... [2022-11-25 22:32:36,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8d659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:36, skipping insertion in model container [2022-11-25 22:32:36,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:32:36" (1/1) ... [2022-11-25 22:32:36,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:32:36,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:32:36,693 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_e72a197e-c101-4c03-a95f-2933aa6878ed/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2022-11-25 22:32:36,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:32:36,718 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:32:36,729 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_e72a197e-c101-4c03-a95f-2933aa6878ed/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2022-11-25 22:32:36,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:32:36,749 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:32:36,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:36 WrapperNode [2022-11-25 22:32:36,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:32:36,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:32:36,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:32:36,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:32:36,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:36" (1/1) ... [2022-11-25 22:32:36,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:36" (1/1) ... [2022-11-25 22:32:36,788 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2022-11-25 22:32:36,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:32:36,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:32:36,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:32:36,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:32:36,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:36" (1/1) ... [2022-11-25 22:32:36,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:36" (1/1) ... [2022-11-25 22:32:36,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:36" (1/1) ... [2022-11-25 22:32:36,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:36" (1/1) ... [2022-11-25 22:32:36,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:36" (1/1) ... [2022-11-25 22:32:36,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:36" (1/1) ... [2022-11-25 22:32:36,818 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:36" (1/1) ... [2022-11-25 22:32:36,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:36" (1/1) ... [2022-11-25 22:32:36,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:32:36,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:32:36,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:32:36,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:32:36,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:36" (1/1) ... [2022-11-25 22:32:36,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:32:36,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:32:36,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:32:36,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:32:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:32:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 22:32:36,929 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 22:32:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:32:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:32:36,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:32:37,009 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:32:37,013 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:32:37,168 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:32:37,213 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:32:37,213 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 22:32:37,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:32:37 BoogieIcfgContainer [2022-11-25 22:32:37,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:32:37,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:32:37,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:32:37,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:32:37,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:32:36" (1/3) ... [2022-11-25 22:32:37,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2924cfdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:32:37, skipping insertion in model container [2022-11-25 22:32:37,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:36" (2/3) ... [2022-11-25 22:32:37,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2924cfdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:32:37, skipping insertion in model container [2022-11-25 22:32:37,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:32:37" (3/3) ... [2022-11-25 22:32:37,227 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2022-11-25 22:32:37,262 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:32:37,262 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:32:37,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:32:37,393 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;@1f3c617b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:32:37,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:32:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:32:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 22:32:37,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:32:37,418 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:32:37,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:32:37,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:32:37,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1198132788, now seen corresponding path program 1 times [2022-11-25 22:32:37,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:32:37,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711242706] [2022-11-25 22:32:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:37,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:32:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:32:37,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 22:32:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:32:37,688 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 22:32:37,690 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 22:32:37,692 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 22:32:37,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:32:37,699 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 22:32:37,704 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:32:37,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:32:37 BoogieIcfgContainer [2022-11-25 22:32:37,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:32:37,738 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:32:37,738 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:32:37,739 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:32:37,739 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:32:37" (3/4) ... [2022-11-25 22:32:37,743 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 22:32:37,743 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:32:37,745 INFO L158 Benchmark]: Toolchain (without parser) took 1255.23ms. Allocated memory is still 203.4MB. Free memory was 156.9MB in the beginning and 115.9MB in the end (delta: 41.1MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-25 22:32:37,745 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 151.0MB. Free memory is still 94.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:32:37,746 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.03ms. Allocated memory is still 203.4MB. Free memory was 156.3MB in the beginning and 146.5MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 22:32:37,747 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.25ms. Allocated memory is still 203.4MB. Free memory was 146.5MB in the beginning and 145.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:32:37,748 INFO L158 Benchmark]: Boogie Preprocessor took 34.48ms. Allocated memory is still 203.4MB. Free memory was 145.0MB in the beginning and 143.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:32:37,755 INFO L158 Benchmark]: RCFGBuilder took 390.81ms. Allocated memory is still 203.4MB. Free memory was 143.7MB in the beginning and 131.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 22:32:37,756 INFO L158 Benchmark]: TraceAbstraction took 516.44ms. Allocated memory is still 203.4MB. Free memory was 130.6MB in the beginning and 116.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 22:32:37,758 INFO L158 Benchmark]: Witness Printer took 5.12ms. Allocated memory is still 203.4MB. Free memory was 116.5MB in the beginning and 115.9MB in the end (delta: 606.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:32:37,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 151.0MB. Free memory is still 94.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.03ms. Allocated memory is still 203.4MB. Free memory was 156.3MB in the beginning and 146.5MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.25ms. Allocated memory is still 203.4MB. Free memory was 146.5MB in the beginning and 145.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.48ms. Allocated memory is still 203.4MB. Free memory was 145.0MB in the beginning and 143.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 390.81ms. Allocated memory is still 203.4MB. Free memory was 143.7MB in the beginning and 131.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 516.44ms. Allocated memory is still 203.4MB. Free memory was 130.6MB in the beginning and 116.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.12ms. Allocated memory is still 203.4MB. Free memory was 116.5MB in the beginning and 115.9MB in the end (delta: 606.6kB). 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: 10]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 29, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 28. Possible FailurePath: [L14] float X, Y, S, R, D; [L15] int i; [L17] Y = 0 [L19] i = 0 VAL [i=0] [L19] COND TRUE i < 100000 [L21] X = __VERIFIER_nondet_float() [L22] D = __VERIFIER_nondet_float() [L23] CALL assume_abort_if_not(X >= -128.f && X <= 128.f) VAL [\old(cond)=1] [L8] COND FALSE !(!cond) [L23] RET assume_abort_if_not(X >= -128.f && X <= 128.f) VAL [D=54, i=0, X=53] [L24] CALL assume_abort_if_not(D >= 0.f && D <= 16.f) VAL [\old(cond)=1] [L8] COND FALSE !(!cond) [L24] RET assume_abort_if_not(D >= 0.f && D <= 16.f) VAL [D=54, i=0, X=53] [L26] S = Y [L27] Y = X [L28] R = X - S [L29] COND TRUE R <= -D [L29] Y = S - D [L32] CALL __VERIFIER_assert(Y >= -129.f && Y <= 129.f) [L10] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L10] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 22:32:37,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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_e72a197e-c101-4c03-a95f-2933aa6878ed/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 d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 --- 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 [2022-11-25 22:32:40,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:32:40,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:32:40,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:32:40,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:32:40,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:32:40,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:32:40,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:32:40,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:32:40,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:32:40,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:32:40,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:32:40,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:32:40,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:32:40,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:32:40,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:32:40,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:32:40,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:32:40,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:32:40,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:32:40,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:32:40,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:32:40,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:32:40,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:32:40,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:32:40,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:32:40,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:32:40,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:32:40,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:32:40,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:32:40,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:32:40,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:32:40,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:32:40,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:32:40,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:32:40,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:32:40,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:32:40,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:32:40,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:32:40,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:32:40,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:32:40,468 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-25 22:32:40,510 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:32:40,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:32:40,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:32:40,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:32:40,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:32:40,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:32:40,514 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:32:40,514 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:32:40,515 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:32:40,515 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:32:40,516 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:32:40,516 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:32:40,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:32:40,517 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:32:40,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:32:40,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:32:40,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:32:40,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:32:40,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:32:40,519 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 22:32:40,519 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 22:32:40,519 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 22:32:40,520 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:32:40,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:32:40,520 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:32:40,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:32:40,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:32:40,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 22:32:40,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:32:40,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:32:40,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:32:40,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:32:40,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:32:40,522 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 22:32:40,523 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 22:32:40,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:32:40,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:32:40,523 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 22:32:40,524 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_e72a197e-c101-4c03-a95f-2933aa6878ed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 [2022-11-25 22:32:40,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:32:40,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:32:40,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:32:40,997 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:32:40,997 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:32:40,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-11-25 22:32:44,087 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:32:44,341 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:32:44,342 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/sv-benchmarks/c/float-benchs/rlim_invariant.c [2022-11-25 22:32:44,354 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/data/239103336/708941e306e74046a0e6933ab9eb9a62/FLAGdce2a23a0 [2022-11-25 22:32:44,371 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/data/239103336/708941e306e74046a0e6933ab9eb9a62 [2022-11-25 22:32:44,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:32:44,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:32:44,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:32:44,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:32:44,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:32:44,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:32:44" (1/1) ... [2022-11-25 22:32:44,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1915a7bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:44, skipping insertion in model container [2022-11-25 22:32:44,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:32:44" (1/1) ... [2022-11-25 22:32:44,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:32:44,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:32:44,590 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_e72a197e-c101-4c03-a95f-2933aa6878ed/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2022-11-25 22:32:44,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:32:44,633 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:32:44,651 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_e72a197e-c101-4c03-a95f-2933aa6878ed/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2022-11-25 22:32:44,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:32:44,685 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:32:44,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:44 WrapperNode [2022-11-25 22:32:44,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:32:44,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:32:44,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:32:44,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:32:44,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:44" (1/1) ... [2022-11-25 22:32:44,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:44" (1/1) ... [2022-11-25 22:32:44,741 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-11-25 22:32:44,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:32:44,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:32:44,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:32:44,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:32:44,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:44" (1/1) ... [2022-11-25 22:32:44,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:44" (1/1) ... [2022-11-25 22:32:44,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:44" (1/1) ... [2022-11-25 22:32:44,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:44" (1/1) ... [2022-11-25 22:32:44,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:44" (1/1) ... [2022-11-25 22:32:44,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:44" (1/1) ... [2022-11-25 22:32:44,790 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:44" (1/1) ... [2022-11-25 22:32:44,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:44" (1/1) ... [2022-11-25 22:32:44,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:32:44,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:32:44,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:32:44,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:32:44,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:44" (1/1) ... [2022-11-25 22:32:44,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:32:44,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:32:44,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:32:44,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:32:44,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:32:44,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 22:32:44,894 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 22:32:44,894 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 22:32:44,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:32:44,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:32:44,990 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:32:44,992 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:32:45,421 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:32:45,427 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:32:45,427 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 22:32:45,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:32:45 BoogieIcfgContainer [2022-11-25 22:32:45,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:32:45,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:32:45,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:32:45,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:32:45,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:32:44" (1/3) ... [2022-11-25 22:32:45,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24195f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:32:45, skipping insertion in model container [2022-11-25 22:32:45,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:32:44" (2/3) ... [2022-11-25 22:32:45,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24195f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:32:45, skipping insertion in model container [2022-11-25 22:32:45,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:32:45" (3/3) ... [2022-11-25 22:32:45,464 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2022-11-25 22:32:45,506 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:32:45,506 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:32:45,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:32:45,566 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;@3f2afd25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:32:45,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:32:45,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:32:45,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-25 22:32:45,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:32:45,579 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:32:45,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:32:45,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:32:45,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1358229485, now seen corresponding path program 1 times [2022-11-25 22:32:45,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:32:45,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335821753] [2022-11-25 22:32:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:45,600 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 [2022-11-25 22:32:45,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:32:45,606 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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) [2022-11-25 22:32:45,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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 [2022-11-25 22:32:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:32:45,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 22:32:45,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:32:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:32:45,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:32:45,776 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:32:45,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335821753] [2022-11-25 22:32:45,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335821753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:32:45,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:32:45,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:32:45,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284691276] [2022-11-25 22:32:45,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:32:45,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 22:32:45,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:32:45,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 22:32:45,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:32:45,817 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:32:45,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:32:45,839 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-11-25 22:32:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 22:32:45,841 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-11-25 22:32:45,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:32:45,850 INFO L225 Difference]: With dead ends: 42 [2022-11-25 22:32:45,850 INFO L226 Difference]: Without dead ends: 18 [2022-11-25 22:32:45,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:32:45,855 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:32:45,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:32:45,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-25 22:32:45,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-25 22:32:45,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:32:45,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-11-25 22:32:45,898 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 18 [2022-11-25 22:32:45,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:32:45,899 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-25 22:32:45,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:32:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-11-25 22:32:45,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-25 22:32:45,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:32:45,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:32:45,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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 [2022-11-25 22:32:46,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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 [2022-11-25 22:32:46,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:32:46,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:32:46,119 INFO L85 PathProgramCache]: Analyzing trace with hash -37923155, now seen corresponding path program 1 times [2022-11-25 22:32:46,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:32:46,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101373422] [2022-11-25 22:32:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:46,120 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 [2022-11-25 22:32:46,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:32:46,121 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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) [2022-11-25 22:32:46,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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 [2022-11-25 22:32:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:32:46,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 22:32:46,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:32:46,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:32:46,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:32:46,840 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:32:46,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101373422] [2022-11-25 22:32:46,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101373422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:32:46,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:32:46,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 22:32:46,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506960563] [2022-11-25 22:32:46,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:32:46,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 22:32:46,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:32:46,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 22:32:46,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:32:46,869 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:32:48,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:32:48,778 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2022-11-25 22:32:48,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:32:48,780 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-11-25 22:32:48,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:32:48,781 INFO L225 Difference]: With dead ends: 44 [2022-11-25 22:32:48,781 INFO L226 Difference]: Without dead ends: 42 [2022-11-25 22:32:48,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-11-25 22:32:48,783 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:32:48,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 65 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 22:32:48,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-25 22:32:48,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 25. [2022-11-25 22:32:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 22:32:48,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-11-25 22:32:48,804 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 18 [2022-11-25 22:32:48,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:32:48,805 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-11-25 22:32:48,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:32:48,805 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-11-25 22:32:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 22:32:48,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:32:48,807 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:32:48,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:32:49,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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 [2022-11-25 22:32:49,022 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:32:49,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:32:49,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1173892842, now seen corresponding path program 1 times [2022-11-25 22:32:49,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:32:49,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133386535] [2022-11-25 22:32:49,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:49,024 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 [2022-11-25 22:32:49,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:32:49,025 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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) [2022-11-25 22:32:49,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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)] Waiting until timeout for monitored process [2022-11-25 22:32:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:32:49,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 22:32:49,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:32:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:32:49,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:32:49,577 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:32:49,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133386535] [2022-11-25 22:32:49,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133386535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:32:49,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:32:49,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 22:32:49,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860601030] [2022-11-25 22:32:49,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:32:49,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 22:32:49,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:32:49,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 22:32:49,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:32:49,580 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:32:51,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:32:51,462 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2022-11-25 22:32:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:32:51,471 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-25 22:32:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:32:51,475 INFO L225 Difference]: With dead ends: 46 [2022-11-25 22:32:51,475 INFO L226 Difference]: Without dead ends: 44 [2022-11-25 22:32:51,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-11-25 22:32:51,481 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 48 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:32:51,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 85 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-25 22:32:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-25 22:32:51,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 26. [2022-11-25 22:32:51,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 22:32:51,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2022-11-25 22:32:51,504 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 19 [2022-11-25 22:32:51,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:32:51,505 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2022-11-25 22:32:51,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:32:51,505 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-11-25 22:32:51,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 22:32:51,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:32:51,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:32:51,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:32:51,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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 [2022-11-25 22:32:51,724 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:32:51,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:32:51,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1173833260, now seen corresponding path program 1 times [2022-11-25 22:32:51,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:32:51,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203014004] [2022-11-25 22:32:51,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:51,726 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 [2022-11-25 22:32:51,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:32:51,727 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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) [2022-11-25 22:32:51,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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 (5)] Waiting until timeout for monitored process [2022-11-25 22:32:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:32:51,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:32:51,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:32:51,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:32:51,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:32:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:32:52,355 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:32:52,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203014004] [2022-11-25 22:32:52,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203014004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:32:52,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [466281693] [2022-11-25 22:32:52,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:52,356 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:32:52,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:32:52,362 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:32:52,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-25 22:32:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:32:52,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 22:32:52,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:32:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:32:52,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:32:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:32:52,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [466281693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:32:52,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461409218] [2022-11-25 22:32:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:52,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:32:52,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:32:52,903 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:32:52,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 22:32:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:32:52,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 22:32:52,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:32:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:32:53,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:32:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:32:53,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461409218] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:32:53,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:32:53,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 11 [2022-11-25 22:32:53,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083882477] [2022-11-25 22:32:53,317 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:32:53,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 22:32:53,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:32:53,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 22:32:53,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:32:53,318 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 22:32:54,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:32:54,786 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2022-11-25 22:32:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 22:32:54,791 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 19 [2022-11-25 22:32:54,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:32:54,792 INFO L225 Difference]: With dead ends: 41 [2022-11-25 22:32:54,792 INFO L226 Difference]: Without dead ends: 39 [2022-11-25 22:32:54,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 93 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-25 22:32:54,793 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 41 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:32:54,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 112 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 22:32:54,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-25 22:32:54,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2022-11-25 22:32:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 22:32:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2022-11-25 22:32:54,802 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 19 [2022-11-25 22:32:54,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:32:54,802 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2022-11-25 22:32:54,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 22:32:54,803 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-11-25 22:32:54,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-25 22:32:54,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:32:54,804 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:32:54,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-25 22:32:55,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 22:32:55,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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 (5)] Ended with exit code 0 [2022-11-25 22:32:55,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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 [2022-11-25 22:32:55,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:32:55,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:32:55,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1809540222, now seen corresponding path program 1 times [2022-11-25 22:32:55,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:32:55,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626802654] [2022-11-25 22:32:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:55,408 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 [2022-11-25 22:32:55,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:32:55,409 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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) [2022-11-25 22:32:55,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/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 (8)] Waiting until timeout for monitored process [2022-11-25 22:32:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:32:55,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 22:32:55,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:33:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:33:58,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:34:50,607 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:34:50,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626802654] [2022-11-25 22:34:50,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626802654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:34:50,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2101555135] [2022-11-25 22:34:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:50,608 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:34:50,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:34:50,610 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:34:50,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-25 22:34:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:51,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 22:34:51,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:35:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:35:26,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:36:02,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2101555135] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:36:02,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221630500] [2022-11-25 22:36:02,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:36:02,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:36:02,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:36:02,088 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:36:02,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72a197e-c101-4c03-a95f-2933aa6878ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 22:36:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:36:02,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 22:36:02,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:36:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 22:36:28,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:37:13,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221630500] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:37:13,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:37:13,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 20 [2022-11-25 22:37:13,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809675837] [2022-11-25 22:37:13,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:37:13,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 22:37:13,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:37:13,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 22:37:13,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=795, Unknown=33, NotChecked=0, Total=992 [2022-11-25 22:37:13,262 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 21 states, 20 states have (on average 1.75) internal successors, (35), 16 states have internal predecessors, (35), 5 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-25 22:37:15,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:37:17,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:37:19,602 WARN L539 Checker$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 [0] [2022-11-25 22:37:25,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:37:27,475 WARN L539 Checker$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 [0] [2022-11-25 22:37:29,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:38:02,174 WARN L233 SmtUtils]: Spent 15.94s on a formula simplification. DAG size of input: 39 DAG size of output: 37 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:14,530 WARN L539 Checker$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 [0] [2022-11-25 22:38:31,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:39:24,988 WARN L233 SmtUtils]: Spent 16.23s on a formula simplification. DAG size of input: 49 DAG size of output: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:39:27,000 WARN L539 Checker$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 [0] [2022-11-25 22:39:30,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:39:32,239 WARN L539 Checker$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 [0] [2022-11-25 22:39:34,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:39:36,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:40:16,672 WARN L233 SmtUtils]: Spent 12.18s on a formula simplification. DAG size of input: 42 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:40:17,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:40:20,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:40:22,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:40:23,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:40:35,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:40:41,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:40:45,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:40:47,611 WARN L539 Checker$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 [0] [2022-11-25 22:40:49,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:41:04,300 WARN L539 Checker$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 [0] [2022-11-25 22:41:08,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:41:32,807 WARN L539 Checker$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 [0] [2022-11-25 22:41:53,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:41:55,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:41:57,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:42:44,535 WARN L233 SmtUtils]: Spent 7.32s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:42:46,599 WARN L539 Checker$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 [0] [2022-11-25 22:42:49,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:44:32,079 WARN L233 SmtUtils]: Spent 1.10m on a formula simplification. DAG size of input: 60 DAG size of output: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:44:34,180 WARN L539 Checker$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 [0] [2022-11-25 22:44:35,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:44:38,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:45:45,205 WARN L233 SmtUtils]: Spent 34.21s on a formula simplification. DAG size of input: 47 DAG size of output: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:45:47,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:45:49,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:45:51,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:45:53,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:46:07,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:46:10,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:46:13,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:46:16,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:46:18,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:46:21,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:46:22,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:46:23,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:46:26,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:47:07,915 WARN L539 Checker$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 [0] [2022-11-25 22:47:23,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:47:26,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:47:28,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:47:30,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:47:32,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:47:34,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:48:03,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]