./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta --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 6764d5c0204d5929259e99bbe2407d8f2018e402cda704b63da836202ebf4e68 --- 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-dbf71c6-m [2022-10-17 17:45:31,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:45:31,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:45:32,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:45:32,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:45:32,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:45:32,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:45:32,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:45:32,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:45:32,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:45:32,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:45:32,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:45:32,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:45:32,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:45:32,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:45:32,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:45:32,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:45:32,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:45:32,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:45:32,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:45:32,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:45:32,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:45:32,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:45:32,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:45:32,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:45:32,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:45:32,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:45:32,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:45:32,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:45:32,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:45:32,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:45:32,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:45:32,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:45:32,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:45:32,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:45:32,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:45:32,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:45:32,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:45:32,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:45:32,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:45:32,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:45:32,089 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:45:32,113 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:45:32,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:45:32,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:45:32,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:45:32,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:45:32,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:45:32,115 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:45:32,115 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:45:32,115 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:45:32,116 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:45:32,116 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:45:32,116 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:45:32,116 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:45:32,116 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:45:32,117 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:45:32,117 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:45:32,117 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:45:32,117 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:45:32,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:45:32,118 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:45:32,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:45:32,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:45:32,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:45:32,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:45:32,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:45:32,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:45:32,120 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:45:32,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:45:32,120 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:45:32,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:45:32,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:45:32,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:45:32,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:45:32,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:45:32,121 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:45:32,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:45:32,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:45:32,122 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:45:32,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:45:32,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:45:32,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:45:32,123 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_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6764d5c0204d5929259e99bbe2407d8f2018e402cda704b63da836202ebf4e68 [2022-10-17 17:45:32,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:45:32,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:45:32,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:45:32,411 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:45:32,412 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:45:32,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2022-10-17 17:45:32,490 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/data/3bd0be948/f0eeb70df27f449d90a487732b077b7e/FLAG01bfe473d [2022-10-17 17:45:32,979 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:45:32,980 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2022-10-17 17:45:32,986 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/data/3bd0be948/f0eeb70df27f449d90a487732b077b7e/FLAG01bfe473d [2022-10-17 17:45:33,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/data/3bd0be948/f0eeb70df27f449d90a487732b077b7e [2022-10-17 17:45:33,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:45:33,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:45:33,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:45:33,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:45:33,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:45:33,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:45:33" (1/1) ... [2022-10-17 17:45:33,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3e5ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33, skipping insertion in model container [2022-10-17 17:45:33,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:45:33" (1/1) ... [2022-10-17 17:45:33,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:45:33,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:45:33,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c[1657,1670] [2022-10-17 17:45:33,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:45:33,687 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:45:33,728 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c[1657,1670] [2022-10-17 17:45:33,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:45:33,743 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:45:33,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33 WrapperNode [2022-10-17 17:45:33,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:45:33,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:45:33,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:45:33,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:45:33,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33" (1/1) ... [2022-10-17 17:45:33,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33" (1/1) ... [2022-10-17 17:45:33,796 INFO L138 Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2022-10-17 17:45:33,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:45:33,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:45:33,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:45:33,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:45:33,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33" (1/1) ... [2022-10-17 17:45:33,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33" (1/1) ... [2022-10-17 17:45:33,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33" (1/1) ... [2022-10-17 17:45:33,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33" (1/1) ... [2022-10-17 17:45:33,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33" (1/1) ... [2022-10-17 17:45:33,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33" (1/1) ... [2022-10-17 17:45:33,838 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33" (1/1) ... [2022-10-17 17:45:33,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33" (1/1) ... [2022-10-17 17:45:33,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:45:33,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:45:33,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:45:33,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:45:33,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33" (1/1) ... [2022-10-17 17:45:33,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:45:33,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:45:33,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:45:33,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:45:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:45:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:45:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:45:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-10-17 17:45:33,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-10-17 17:45:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-17 17:45:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:45:33,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:45:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:45:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:45:34,013 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:45:34,015 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:45:34,229 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:45:34,420 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:45:34,421 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 17:45:34,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:45:34 BoogieIcfgContainer [2022-10-17 17:45:34,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:45:34,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:45:34,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:45:34,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:45:34,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:45:33" (1/3) ... [2022-10-17 17:45:34,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c15154e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:45:34, skipping insertion in model container [2022-10-17 17:45:34,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33" (2/3) ... [2022-10-17 17:45:34,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c15154e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:45:34, skipping insertion in model container [2022-10-17 17:45:34,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:45:34" (3/3) ... [2022-10-17 17:45:34,434 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2022-10-17 17:45:34,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:45:34,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:45:34,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:45:34,518 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;@2f51dbc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:45:34,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:45:34,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 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) [2022-10-17 17:45:34,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 17:45:34,539 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:34,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:34,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:45:34,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:34,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1150042382, now seen corresponding path program 1 times [2022-10-17 17:45:34,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:45:34,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536248167] [2022-10-17 17:45:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:34,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:45:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:45:34,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:45:34,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536248167] [2022-10-17 17:45:34,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536248167] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:34,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:34,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:45:34,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833608822] [2022-10-17 17:45:34,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:34,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:45:34,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:45:34,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:45:34,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:45:34,747 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:45:34,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:34,781 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2022-10-17 17:45:34,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:45:34,784 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-10-17 17:45:34,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:34,791 INFO L225 Difference]: With dead ends: 40 [2022-10-17 17:45:34,791 INFO L226 Difference]: Without dead ends: 19 [2022-10-17 17:45:34,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:45:34,798 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:45:34,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:45:34,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-10-17 17:45:34,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-10-17 17:45:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 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) [2022-10-17 17:45:34,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-10-17 17:45:34,834 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-10-17 17:45:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:34,835 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-10-17 17:45:34,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:45:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-10-17 17:45:34,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:45:34,837 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:34,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:34,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:45:34,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:45:34,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2093005978, now seen corresponding path program 1 times [2022-10-17 17:45:34,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:45:34,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094533358] [2022-10-17 17:45:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:34,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:45:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:45:34,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:45:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:45:34,935 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-10-17 17:45:34,935 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:45:34,937 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:45:34,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:45:34,942 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 17:45:34,946 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:45:34,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:45:34 BoogieIcfgContainer [2022-10-17 17:45:34,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:45:34,971 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:45:34,971 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:45:34,971 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:45:34,972 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:45:34" (3/4) ... [2022-10-17 17:45:34,975 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 17:45:34,975 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:45:34,976 INFO L158 Benchmark]: Toolchain (without parser) took 1608.75ms. Allocated memory was 86.0MB in the beginning and 119.5MB in the end (delta: 33.6MB). Free memory was 46.0MB in the beginning and 74.8MB in the end (delta: -28.8MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2022-10-17 17:45:34,977 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:45:34,977 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.34ms. Allocated memory is still 119.5MB. Free memory was 98.2MB in the beginning and 93.3MB in the end (delta: 5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 17:45:34,978 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.56ms. Allocated memory is still 119.5MB. Free memory was 93.3MB in the beginning and 91.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:45:34,978 INFO L158 Benchmark]: Boogie Preprocessor took 50.79ms. Allocated memory is still 119.5MB. Free memory was 91.7MB in the beginning and 90.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:45:34,979 INFO L158 Benchmark]: RCFGBuilder took 573.50ms. Allocated memory is still 119.5MB. Free memory was 90.3MB in the beginning and 72.6MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-10-17 17:45:34,979 INFO L158 Benchmark]: TraceAbstraction took 544.06ms. Allocated memory is still 119.5MB. Free memory was 71.9MB in the beginning and 75.4MB in the end (delta: -3.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:45:34,980 INFO L158 Benchmark]: Witness Printer took 4.29ms. Allocated memory is still 119.5MB. Free memory was 75.4MB in the beginning and 74.8MB in the end (delta: 619.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:45:34,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.34ms. Allocated memory is still 119.5MB. Free memory was 98.2MB in the beginning and 93.3MB in the end (delta: 5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.56ms. Allocated memory is still 119.5MB. Free memory was 93.3MB in the beginning and 91.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.79ms. Allocated memory is still 119.5MB. Free memory was 91.7MB in the beginning and 90.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 573.50ms. Allocated memory is still 119.5MB. Free memory was 90.3MB in the beginning and 72.6MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 544.06ms. Allocated memory is still 119.5MB. Free memory was 71.9MB in the beginning and 75.4MB in the end (delta: -3.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.29ms. Allocated memory is still 119.5MB. Free memory was 75.4MB in the beginning and 74.8MB in the end (delta: 619.5kB). Peak memory consumption was 2.1MB. 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: 72]: 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 71, overapproximation of someUnaryFLOAToperation at line 66. Possible FailurePath: [L66] float x = -0.0f; [L67] float y = 0.0f; [L68] CALL, EXPR fmin_float(x, y) [L38] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095048] [L15] __uint32_t w; VAL [\old(x)=2139095048, x=2139095048] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] RET, EXPR __fpclassify_float(x) VAL [\old(x)=2139095048, \old(y)=0, __fpclassify_float(x)=0, x=2139095048, y=0] [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; VAL [\old(x)=2139095048, \old(y)=0, \result=0, x=2139095048, y=0] [L68] RET, EXPR fmin_float(x, y) [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0, res == -0.0f && __signbit_float(res) == 1=0, x=2139095048, y=0] [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L72] reach_error() VAL [res=0, x=2139095048, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-10-17 17:45:35,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta --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 6764d5c0204d5929259e99bbe2407d8f2018e402cda704b63da836202ebf4e68 --- 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-dbf71c6-m [2022-10-17 17:45:37,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:45:37,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:45:37,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:45:37,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:45:37,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:45:37,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:45:37,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:45:37,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:45:37,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:45:37,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:45:37,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:45:37,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:45:37,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:45:37,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:45:37,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:45:37,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:45:37,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:45:37,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:45:37,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:45:37,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:45:37,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:45:37,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:45:37,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:45:37,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:45:37,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:45:37,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:45:37,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:45:37,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:45:37,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:45:37,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:45:37,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:45:37,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:45:37,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:45:37,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:45:37,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:45:37,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:45:37,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:45:37,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:45:37,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:45:37,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:45:37,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-10-17 17:45:37,677 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:45:37,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:45:37,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:45:37,679 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:45:37,680 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:45:37,681 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:45:37,681 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:45:37,681 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:45:37,681 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:45:37,682 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:45:37,683 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:45:37,683 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:45:37,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:45:37,685 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:45:37,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:45:37,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:45:37,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:45:37,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:45:37,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:45:37,686 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:45:37,686 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 17:45:37,686 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 17:45:37,687 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:45:37,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:45:37,687 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:45:37,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:45:37,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:45:37,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 17:45:37,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:45:37,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:45:37,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:45:37,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:45:37,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:45:37,690 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-10-17 17:45:37,690 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 17:45:37,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:45:37,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:45:37,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 17:45:37,691 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_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6764d5c0204d5929259e99bbe2407d8f2018e402cda704b63da836202ebf4e68 [2022-10-17 17:45:38,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:45:38,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:45:38,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:45:38,103 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:45:38,104 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:45:38,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2022-10-17 17:45:38,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/data/49dceb098/b67eab182b4f4244a04ce6401ef1fdf1/FLAG8cf0c3e5a [2022-10-17 17:45:38,732 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:45:38,734 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2022-10-17 17:45:38,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/data/49dceb098/b67eab182b4f4244a04ce6401ef1fdf1/FLAG8cf0c3e5a [2022-10-17 17:45:39,109 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/data/49dceb098/b67eab182b4f4244a04ce6401ef1fdf1 [2022-10-17 17:45:39,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:45:39,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:45:39,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:45:39,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:45:39,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:45:39,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:45:39" (1/1) ... [2022-10-17 17:45:39,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2add3760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:39, skipping insertion in model container [2022-10-17 17:45:39,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:45:39" (1/1) ... [2022-10-17 17:45:39,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:45:39,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:45:39,388 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c[1657,1670] [2022-10-17 17:45:39,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:45:39,406 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:45:39,493 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c[1657,1670] [2022-10-17 17:45:39,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:45:39,514 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:45:39,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:39 WrapperNode [2022-10-17 17:45:39,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:45:39,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:45:39,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:45:39,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:45:39,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:39" (1/1) ... [2022-10-17 17:45:39,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:39" (1/1) ... [2022-10-17 17:45:39,573 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2022-10-17 17:45:39,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:45:39,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:45:39,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:45:39,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:45:39,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:39" (1/1) ... [2022-10-17 17:45:39,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:39" (1/1) ... [2022-10-17 17:45:39,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:39" (1/1) ... [2022-10-17 17:45:39,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:39" (1/1) ... [2022-10-17 17:45:39,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:39" (1/1) ... [2022-10-17 17:45:39,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:39" (1/1) ... [2022-10-17 17:45:39,632 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:39" (1/1) ... [2022-10-17 17:45:39,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:39" (1/1) ... [2022-10-17 17:45:39,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:45:39,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:45:39,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:45:39,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:45:39,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:39" (1/1) ... [2022-10-17 17:45:39,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:45:39,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:45:39,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:45:39,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:45:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:45:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 17:45:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:45:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-10-17 17:45:39,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-10-17 17:45:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 17:45:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:45:39,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:45:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-10-17 17:45:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:45:39,801 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:45:39,803 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:45:40,070 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:45:40,076 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:45:40,077 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 17:45:40,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:45:40 BoogieIcfgContainer [2022-10-17 17:45:40,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:45:40,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:45:40,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:45:40,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:45:40,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:45:39" (1/3) ... [2022-10-17 17:45:40,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512b1783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:45:40, skipping insertion in model container [2022-10-17 17:45:40,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:39" (2/3) ... [2022-10-17 17:45:40,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512b1783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:45:40, skipping insertion in model container [2022-10-17 17:45:40,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:45:40" (3/3) ... [2022-10-17 17:45:40,088 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2022-10-17 17:45:40,105 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:45:40,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:45:40,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:45:40,193 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;@14b9c605, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:45:40,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:45:40,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 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) [2022-10-17 17:45:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:45:40,205 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:40,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:40,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:45:40,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:40,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1826258672, now seen corresponding path program 1 times [2022-10-17 17:45:40,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:40,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797006904] [2022-10-17 17:45:40,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:40,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:40,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:40,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:40,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 17:45:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:40,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 17:45:40,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:45:40,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:40,393 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:40,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797006904] [2022-10-17 17:45:40,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797006904] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:40,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:40,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:45:40,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231091998] [2022-10-17 17:45:40,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:40,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:45:40,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:40,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:45:40,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:45:40,443 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:45:40,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:40,464 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2022-10-17 17:45:40,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:45:40,466 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-10-17 17:45:40,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:40,474 INFO L225 Difference]: With dead ends: 55 [2022-10-17 17:45:40,474 INFO L226 Difference]: Without dead ends: 26 [2022-10-17 17:45:40,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:45:40,481 INFO L413 NwaCegarLoop]: 37 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, 37 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 [2022-10-17 17:45:40,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:45:40,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-10-17 17:45:40,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-10-17 17:45:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 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) [2022-10-17 17:45:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-10-17 17:45:40,521 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 13 [2022-10-17 17:45:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:40,521 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-10-17 17:45:40,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:45:40,522 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-10-17 17:45:40,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 17:45:40,523 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:40,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:40,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:45:40,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:40,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:45:40,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:40,738 INFO L85 PathProgramCache]: Analyzing trace with hash -503165124, now seen corresponding path program 1 times [2022-10-17 17:45:40,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:40,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98793082] [2022-10-17 17:45:40,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:40,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:40,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:40,741 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:40,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 17:45:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:40,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:45:40,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:45:40,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:40,899 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:40,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98793082] [2022-10-17 17:45:40,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98793082] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:40,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:40,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:45:40,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632005219] [2022-10-17 17:45:40,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:40,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:45:40,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:40,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:45:40,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:45:40,914 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:45:40,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:40,976 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2022-10-17 17:45:40,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:45:40,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-10-17 17:45:40,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:40,980 INFO L225 Difference]: With dead ends: 38 [2022-10-17 17:45:40,981 INFO L226 Difference]: Without dead ends: 29 [2022-10-17 17:45:40,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:45:40,983 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:45:40,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:45:40,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-10-17 17:45:40,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-10-17 17:45:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 17:45:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2022-10-17 17:45:40,999 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 14 [2022-10-17 17:45:40,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:40,999 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2022-10-17 17:45:40,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:45:41,000 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2022-10-17 17:45:41,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:45:41,002 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:41,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:41,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:45:41,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:41,225 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:45:41,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:41,226 INFO L85 PathProgramCache]: Analyzing trace with hash 25086925, now seen corresponding path program 1 times [2022-10-17 17:45:41,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:41,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389875024] [2022-10-17 17:45:41,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:41,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:41,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:41,228 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:41,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 17:45:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:41,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 17:45:41,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:41,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:45:41,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:41,593 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:41,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389875024] [2022-10-17 17:45:41,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389875024] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:41,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:41,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 17:45:41,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961427998] [2022-10-17 17:45:41,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:41,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:45:41,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:41,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:45:41,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:45:41,603 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:45:41,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:41,742 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2022-10-17 17:45:41,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:45:41,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-10-17 17:45:41,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:41,745 INFO L225 Difference]: With dead ends: 68 [2022-10-17 17:45:41,745 INFO L226 Difference]: Without dead ends: 43 [2022-10-17 17:45:41,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:45:41,746 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:45:41,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 106 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2022-10-17 17:45:41,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-17 17:45:41,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2022-10-17 17:45:41,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 17:45:41,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2022-10-17 17:45:41,755 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 15 [2022-10-17 17:45:41,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:41,756 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-10-17 17:45:41,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:45:41,756 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2022-10-17 17:45:41,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 17:45:41,757 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:41,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:41,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-10-17 17:45:41,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:41,961 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:45:41,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:41,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1897305304, now seen corresponding path program 1 times [2022-10-17 17:45:41,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:41,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31215516] [2022-10-17 17:45:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:41,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:41,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:41,965 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:41,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 17:45:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:42,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 17:45:42,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:45:42,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:42,215 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:42,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31215516] [2022-10-17 17:45:42,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31215516] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:42,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:42,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 17:45:42,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444802507] [2022-10-17 17:45:42,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:42,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:45:42,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:42,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:45:42,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:45:42,218 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:45:42,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:42,347 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2022-10-17 17:45:42,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:45:42,351 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-10-17 17:45:42,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:42,351 INFO L225 Difference]: With dead ends: 57 [2022-10-17 17:45:42,352 INFO L226 Difference]: Without dead ends: 30 [2022-10-17 17:45:42,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:45:42,353 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 26 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:45:42,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 87 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-10-17 17:45:42,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-10-17 17:45:42,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-10-17 17:45:42,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 17:45:42,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2022-10-17 17:45:42,367 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 16 [2022-10-17 17:45:42,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:42,368 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-10-17 17:45:42,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:45:42,368 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2022-10-17 17:45:42,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 17:45:42,370 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:42,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:42,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:45:42,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:42,584 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:45:42,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:42,584 INFO L85 PathProgramCache]: Analyzing trace with hash -538621340, now seen corresponding path program 1 times [2022-10-17 17:45:42,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:42,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414541108] [2022-10-17 17:45:42,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:42,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:42,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:42,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:42,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 17:45:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:42,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:45:42,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 17:45:42,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:42,692 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:42,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414541108] [2022-10-17 17:45:42,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414541108] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:42,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:42,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:45:42,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137685143] [2022-10-17 17:45:42,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:42,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:45:42,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:42,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:45:42,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:45:42,694 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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) [2022-10-17 17:45:42,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:42,734 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-10-17 17:45:42,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:45:42,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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 22 [2022-10-17 17:45:42,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:42,736 INFO L225 Difference]: With dead ends: 38 [2022-10-17 17:45:42,736 INFO L226 Difference]: Without dead ends: 29 [2022-10-17 17:45:42,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:45:42,740 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:45:42,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:45:42,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-10-17 17:45:42,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-10-17 17:45:42,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 17:45:42,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-10-17 17:45:42,762 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 22 [2022-10-17 17:45:42,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:42,763 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-10-17 17:45:42,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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) [2022-10-17 17:45:42,763 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-10-17 17:45:42,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 17:45:42,765 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:42,765 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:42,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-10-17 17:45:42,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:42,986 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:45:42,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:42,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1336928685, now seen corresponding path program 1 times [2022-10-17 17:45:42,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:42,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576381547] [2022-10-17 17:45:42,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:42,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:42,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:42,989 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:42,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 17:45:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:43,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 17:45:43,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:45:43,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:43,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:43,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576381547] [2022-10-17 17:45:43,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576381547] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:43,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:43,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 17:45:43,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207961284] [2022-10-17 17:45:43,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:43,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:45:43,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:43,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:45:43,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:45:43,186 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-10-17 17:45:43,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:43,332 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2022-10-17 17:45:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:45:43,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 23 [2022-10-17 17:45:43,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:43,334 INFO L225 Difference]: With dead ends: 43 [2022-10-17 17:45:43,334 INFO L226 Difference]: Without dead ends: 29 [2022-10-17 17:45:43,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:45:43,335 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:45:43,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 92 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 11 Unchecked, 0.1s Time] [2022-10-17 17:45:43,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-10-17 17:45:43,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-10-17 17:45:43,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 17:45:43,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-10-17 17:45:43,340 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2022-10-17 17:45:43,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:43,341 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-10-17 17:45:43,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-10-17 17:45:43,342 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-10-17 17:45:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-17 17:45:43,343 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:43,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:43,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-10-17 17:45:43,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:43,559 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:45:43,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:43,559 INFO L85 PathProgramCache]: Analyzing trace with hash -636835510, now seen corresponding path program 1 times [2022-10-17 17:45:43,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:43,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829920408] [2022-10-17 17:45:43,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:43,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:43,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:43,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:43,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 17:45:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:43,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 17:45:43,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 17:45:43,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:43,724 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:43,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829920408] [2022-10-17 17:45:43,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829920408] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:43,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:43,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:45:43,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502640773] [2022-10-17 17:45:43,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:43,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:45:43,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:43,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:45:43,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:45:43,727 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 17:45:43,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:43,738 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-10-17 17:45:43,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:45:43,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-10-17 17:45:43,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:43,740 INFO L225 Difference]: With dead ends: 39 [2022-10-17 17:45:43,740 INFO L226 Difference]: Without dead ends: 29 [2022-10-17 17:45:43,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:45:43,742 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:45:43,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 41 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:45:43,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-10-17 17:45:43,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-10-17 17:45:43,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 17:45:43,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-10-17 17:45:43,747 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 24 [2022-10-17 17:45:43,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:43,747 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-10-17 17:45:43,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 17:45:43,748 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-10-17 17:45:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-17 17:45:43,749 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:43,749 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:43,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-10-17 17:45:43,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:43,961 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:45:43,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:43,962 INFO L85 PathProgramCache]: Analyzing trace with hash -579577208, now seen corresponding path program 1 times [2022-10-17 17:45:43,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:43,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171875583] [2022-10-17 17:45:43,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:43,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:43,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:43,963 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:43,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-10-17 17:45:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:44,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 17:45:44,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 17:45:44,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:44,096 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:44,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171875583] [2022-10-17 17:45:44,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171875583] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:44,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:44,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 17:45:44,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656137027] [2022-10-17 17:45:44,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:44,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:45:44,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:44,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:45:44,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:45:44,098 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 17:45:44,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:44,189 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2022-10-17 17:45:44,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:45:44,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-10-17 17:45:44,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:44,190 INFO L225 Difference]: With dead ends: 41 [2022-10-17 17:45:44,190 INFO L226 Difference]: Without dead ends: 38 [2022-10-17 17:45:44,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-17 17:45:44,191 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 34 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:45:44,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 109 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:45:44,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-17 17:45:44,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2022-10-17 17:45:44,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 17:45:44,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-10-17 17:45:44,196 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 24 [2022-10-17 17:45:44,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:44,197 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-10-17 17:45:44,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 17:45:44,197 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-10-17 17:45:44,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-17 17:45:44,198 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:44,198 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:44,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-10-17 17:45:44,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:44,399 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:45:44,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:44,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2025711360, now seen corresponding path program 1 times [2022-10-17 17:45:44,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:44,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556410947] [2022-10-17 17:45:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:44,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:44,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:44,401 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:44,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-10-17 17:45:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:44,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 17:45:44,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:45:44,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:44,635 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:44,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556410947] [2022-10-17 17:45:44,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556410947] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:44,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:44,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 17:45:44,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46501446] [2022-10-17 17:45:44,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:44,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:45:44,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:44,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:45:44,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:45:44,638 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-10-17 17:45:44,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:44,753 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-10-17 17:45:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:45:44,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 24 [2022-10-17 17:45:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:44,755 INFO L225 Difference]: With dead ends: 42 [2022-10-17 17:45:44,755 INFO L226 Difference]: Without dead ends: 23 [2022-10-17 17:45:44,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:45:44,759 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:45:44,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 80 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 13 Unchecked, 0.0s Time] [2022-10-17 17:45:44,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-17 17:45:44,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-10-17 17:45:44,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.0) internal successors, (19), 19 states have internal predecessors, (19), 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) [2022-10-17 17:45:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-10-17 17:45:44,769 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 24 [2022-10-17 17:45:44,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:44,769 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-10-17 17:45:44,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-10-17 17:45:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-10-17 17:45:44,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-17 17:45:44,771 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:44,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:44,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-10-17 17:45:44,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:44,981 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:45:44,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:44,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1580504541, now seen corresponding path program 1 times [2022-10-17 17:45:44,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:44,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721417594] [2022-10-17 17:45:44,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:44,983 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:44,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:44,984 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:44,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-10-17 17:45:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:45:45,094 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:45:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:45:45,172 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-10-17 17:45:45,172 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:45:45,174 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:45:45,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-10-17 17:45:45,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:45,378 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:45,381 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:45:45,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:45:45 BoogieIcfgContainer [2022-10-17 17:45:45,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:45:45,421 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:45:45,421 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:45:45,421 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:45:45,422 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:45:40" (3/4) ... [2022-10-17 17:45:45,423 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 17:45:45,477 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:45:45,477 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:45:45,478 INFO L158 Benchmark]: Toolchain (without parser) took 6363.44ms. Allocated memory was 50.3MB in the beginning and 73.4MB in the end (delta: 23.1MB). Free memory was 25.6MB in the beginning and 51.5MB in the end (delta: -25.9MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2022-10-17 17:45:45,478 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 50.3MB. Free memory is still 30.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:45:45,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.22ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 25.4MB in the beginning and 42.3MB in the end (delta: -16.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2022-10-17 17:45:45,479 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.96ms. Allocated memory is still 60.8MB. Free memory was 42.3MB in the beginning and 40.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:45:45,480 INFO L158 Benchmark]: Boogie Preprocessor took 72.23ms. Allocated memory is still 60.8MB. Free memory was 40.7MB in the beginning and 39.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:45:45,480 INFO L158 Benchmark]: RCFGBuilder took 431.60ms. Allocated memory is still 60.8MB. Free memory was 39.0MB in the beginning and 38.8MB in the end (delta: 181.4kB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-10-17 17:45:45,481 INFO L158 Benchmark]: TraceAbstraction took 5339.24ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 38.2MB in the beginning and 28.9MB in the end (delta: 9.3MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2022-10-17 17:45:45,481 INFO L158 Benchmark]: Witness Printer took 56.62ms. Allocated memory is still 73.4MB. Free memory was 28.9MB in the beginning and 51.5MB in the end (delta: -22.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:45:45,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 50.3MB. Free memory is still 30.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.22ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 25.4MB in the beginning and 42.3MB in the end (delta: -16.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.96ms. Allocated memory is still 60.8MB. Free memory was 42.3MB in the beginning and 40.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 72.23ms. Allocated memory is still 60.8MB. Free memory was 40.7MB in the beginning and 39.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 431.60ms. Allocated memory is still 60.8MB. Free memory was 39.0MB in the beginning and 38.8MB in the end (delta: 181.4kB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * TraceAbstraction took 5339.24ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 38.2MB in the beginning and 28.9MB in the end (delta: 9.3MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * Witness Printer took 56.62ms. Allocated memory is still 73.4MB. Free memory was 28.9MB in the beginning and 51.5MB in the end (delta: -22.6MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 72]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L66] float x = -0.0f; [L67] float y = 0.0f; [L68] CALL, EXPR fmin_float(x, y) [L38] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L15] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND TRUE w == 0x00000000 || w == 0x80000000 [L24] return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L38] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L38] COND FALSE !(__fpclassify_float(x) == 0) [L40] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L15] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND TRUE w == 0x00000000 || w == 0x80000000 [L24] return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L40] RET, EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L40] COND FALSE !(__fpclassify_float(y) == 0) [L43] EXPR x < y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x < y ? x : y=0.0, y=0.0] [L43] return x < y ? x : y; [L68] RET, EXPR fmin_float(x, y) [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] CALL, EXPR __signbit_float(res) [L47] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L50] ieee_float_shape_type gf_u; [L51] gf_u.value = (x) [L52] EXPR gf_u.word [L52] (w) = gf_u.word [L55] return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=0, w=0, x=0.0] [L71] RET, EXPR __signbit_float(res) [L71] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [__signbit_float(res)=0, res=0.0, res == -0.0f && __signbit_float(res) == 1=0, x=0.0, y=0.0] [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L72] reach_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 729 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 54 IncrementalHoareTripleChecker+Unchecked, 474 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 159 IncrementalHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 255 mSDtfsCounter, 159 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=3, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 21 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 203 NumberOfCodeBlocks, 203 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 166 ConstructedInterpolants, 14 QuantifiedInterpolants, 513 SizeOfPredicates, 35 NumberOfNonLiveVariables, 611 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 30/30 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 proved your program to be incorrect! [2022-10-17 17:45:45,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be99203e-445c-47b9-849d-a2ee3120777e/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE