./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/hash_fun.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/hash_fun.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH --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 0abab60f5c601fd8191c1a2aa712d4ab55460e987c7d41ca7527c2934792cc0b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:01:56,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:01:56,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:01:56,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:01:56,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:01:56,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:01:56,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:01:56,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:01:56,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:01:56,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:01:56,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:01:56,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:01:56,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:01:56,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:01:56,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:01:56,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:01:56,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:01:56,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:01:56,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:01:56,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:01:56,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:01:56,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:01:56,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:01:56,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:01:56,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:01:56,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:01:56,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:01:56,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:01:56,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:01:56,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:01:56,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:01:56,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:01:56,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:01:56,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:01:56,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:01:56,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:01:56,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:01:56,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:01:56,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:01:56,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:01:56,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:01:56,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:01:56,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:01:56,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:01:56,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:01:56,919 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:01:56,919 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:01:56,920 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:01:56,920 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:01:56,920 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:01:56,920 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:01:56,920 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:01:56,921 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:01:56,922 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:01:56,922 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:01:56,922 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:01:56,922 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:01:56,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:01:56,923 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:01:56,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:01:56,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:01:56,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:01:56,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:01:56,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:01:56,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:01:56,925 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:01:56,925 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:01:56,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:01:56,925 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:01:56,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:01:56,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:01:56,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:01:56,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:01:56,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:01:56,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:01:56,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:01:56,928 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:01:56,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:01:56,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:01:56,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:01:56,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:01:56,929 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0abab60f5c601fd8191c1a2aa712d4ab55460e987c7d41ca7527c2934792cc0b [2021-11-03 05:01:57,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:01:57,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:01:57,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:01:57,226 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:01:57,226 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:01:57,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/heap-data/hash_fun.i [2021-11-03 05:01:57,303 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/data/c2f57b8c7/3fbf9e7ab8a54c8da3fdb9d3d5c0adcb/FLAG4fbe30331 [2021-11-03 05:01:57,809 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:01:57,810 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/sv-benchmarks/c/heap-data/hash_fun.i [2021-11-03 05:01:57,822 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/data/c2f57b8c7/3fbf9e7ab8a54c8da3fdb9d3d5c0adcb/FLAG4fbe30331 [2021-11-03 05:01:58,129 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/data/c2f57b8c7/3fbf9e7ab8a54c8da3fdb9d3d5c0adcb [2021-11-03 05:01:58,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:01:58,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:01:58,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:01:58,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:01:58,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:01:58,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:01:58" (1/1) ... [2021-11-03 05:01:58,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a627ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:58, skipping insertion in model container [2021-11-03 05:01:58,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:01:58" (1/1) ... [2021-11-03 05:01:58,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:01:58,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:01:58,556 WARN L228 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_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/sv-benchmarks/c/heap-data/hash_fun.i[23732,23745] [2021-11-03 05:01:58,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:01:58,570 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:01:58,638 WARN L228 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_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/sv-benchmarks/c/heap-data/hash_fun.i[23732,23745] [2021-11-03 05:01:58,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:01:58,682 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:01:58,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:58 WrapperNode [2021-11-03 05:01:58,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:01:58,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:01:58,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:01:58,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:01:58,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:58" (1/1) ... [2021-11-03 05:01:58,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:58" (1/1) ... [2021-11-03 05:01:58,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:01:58,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:01:58,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:01:58,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:01:58,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:58" (1/1) ... [2021-11-03 05:01:58,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:58" (1/1) ... [2021-11-03 05:01:58,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:58" (1/1) ... [2021-11-03 05:01:58,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:58" (1/1) ... [2021-11-03 05:01:58,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:58" (1/1) ... [2021-11-03 05:01:58,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:58" (1/1) ... [2021-11-03 05:01:58,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:58" (1/1) ... [2021-11-03 05:01:58,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:01:58,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:01:58,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:01:58,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:01:58,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:58" (1/1) ... [2021-11-03 05:01:58,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:01:58,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:01:58,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:01:58,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:01:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 05:01:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 05:01:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:01:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:01:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:01:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:01:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:01:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 05:01:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:01:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:01:58,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:01:59,497 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:01:59,497 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-03 05:01:59,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:01:59 BoogieIcfgContainer [2021-11-03 05:01:59,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:01:59,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:01:59,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:01:59,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:01:59,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:01:58" (1/3) ... [2021-11-03 05:01:59,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1263815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:01:59, skipping insertion in model container [2021-11-03 05:01:59,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:01:58" (2/3) ... [2021-11-03 05:01:59,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1263815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:01:59, skipping insertion in model container [2021-11-03 05:01:59,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:01:59" (3/3) ... [2021-11-03 05:01:59,512 INFO L111 eAbstractionObserver]: Analyzing ICFG hash_fun.i [2021-11-03 05:01:59,519 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:01:59,520 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:01:59,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:01:59,586 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:01:59,586 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:01:59,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:59,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 05:01:59,606 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:01:59,608 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 05:01:59,608 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:01:59,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:59,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1547337024, now seen corresponding path program 1 times [2021-11-03 05:01:59,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:01:59,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243116918] [2021-11-03 05:01:59,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:59,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:01:59,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:01:59,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243116918] [2021-11-03 05:01:59,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243116918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:01:59,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:01:59,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 05:01:59,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684863326] [2021-11-03 05:01:59,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:01:59,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:01:59,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:01:59,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:01:59,836 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:59,849 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2021-11-03 05:01:59,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:01:59,850 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 05:01:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:59,857 INFO L225 Difference]: With dead ends: 19 [2021-11-03 05:01:59,858 INFO L226 Difference]: Without dead ends: 9 [2021-11-03 05:01:59,860 INFO L786 BasicCegarLoop]: 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 [2021-11-03 05:01:59,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-03 05:01:59,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-03 05:01:59,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:59,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-11-03 05:01:59,890 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-11-03 05:01:59,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:59,890 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-03 05:01:59,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:01:59,892 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-11-03 05:01:59,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 05:01:59,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:01:59,893 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:01:59,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:01:59,893 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:01:59,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:59,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1375778140, now seen corresponding path program 1 times [2021-11-03 05:01:59,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:01:59,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432320079] [2021-11-03 05:01:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:59,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:01:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:00,013 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:02:00,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432320079] [2021-11-03 05:02:00,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432320079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:02:00,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:02:00,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:02:00,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934410077] [2021-11-03 05:02:00,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:02:00,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:02:00,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:02:00,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:02:00,017 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:00,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:02:00,086 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-03 05:02:00,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:02:00,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-03 05:02:00,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:02:00,088 INFO L225 Difference]: With dead ends: 19 [2021-11-03 05:02:00,088 INFO L226 Difference]: Without dead ends: 11 [2021-11-03 05:02:00,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:02:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-03 05:02:00,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-03 05:02:00,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:00,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-11-03 05:02:00,094 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2021-11-03 05:02:00,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:02:00,094 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-03 05:02:00,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-11-03 05:02:00,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 05:02:00,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:02:00,100 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:02:00,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:02:00,101 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:02:00,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:00,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1795741692, now seen corresponding path program 1 times [2021-11-03 05:02:00,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:02:00,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094879100] [2021-11-03 05:02:00,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:00,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:02:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:00,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:02:00,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094879100] [2021-11-03 05:02:00,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094879100] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 05:02:00,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713448951] [2021-11-03 05:02:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:00,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:02:00,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:02:00,401 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:02:00,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 05:02:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:00,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 05:02:00,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:00,580 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-11-03 05:02:00,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 31 [2021-11-03 05:02:01,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-03 05:02:01,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [974201867] [2021-11-03 05:02:01,474 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 05:02:01,474 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 05:02:01,478 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 05:02:01,483 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 05:02:01,484 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 05:02:01,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:01,514 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:02:01,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:01,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:02:01,516 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:02:01,517 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:01,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:02:01,519 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-11-03 05:02:01,527 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5cc505f4 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:571) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:444) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 05:02:01,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-03 05:02:01,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-03 05:02:01,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028570169] [2021-11-03 05:02:01,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:02:01,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:02:01,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:02:01,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:02:01,531 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:01,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:02:01,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:01,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:02:01,746 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5cc505f4 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:869) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 05:02:01,750 INFO L168 Benchmark]: Toolchain (without parser) took 3615.96 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 59.9 MB in the beginning and 73.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:02:01,750 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory was 67.1 MB in the beginning and 67.1 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:02:01,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.01 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 59.9 MB in the beginning and 88.8 MB in the end (delta: -28.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:02:01,751 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.82 ms. Allocated memory is still 119.5 MB. Free memory was 88.8 MB in the beginning and 86.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:02:01,752 INFO L168 Benchmark]: Boogie Preprocessor took 29.16 ms. Allocated memory is still 119.5 MB. Free memory was 86.7 MB in the beginning and 85.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:02:01,753 INFO L168 Benchmark]: RCFGBuilder took 742.74 ms. Allocated memory is still 119.5 MB. Free memory was 85.2 MB in the beginning and 65.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-03 05:02:01,753 INFO L168 Benchmark]: TraceAbstraction took 2244.29 ms. Allocated memory is still 119.5 MB. Free memory was 64.3 MB in the beginning and 73.5 MB in the end (delta: -9.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:02:01,756 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory was 67.1 MB in the beginning and 67.1 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 548.01 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 59.9 MB in the beginning and 88.8 MB in the end (delta: -28.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.82 ms. Allocated memory is still 119.5 MB. Free memory was 88.8 MB in the beginning and 86.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.16 ms. Allocated memory is still 119.5 MB. Free memory was 86.7 MB in the beginning and 85.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 742.74 ms. Allocated memory is still 119.5 MB. Free memory was 85.2 MB in the beginning and 65.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2244.29 ms. Allocated memory is still 119.5 MB. Free memory was 64.3 MB in the beginning and 73.5 MB in the end (delta: -9.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5cc505f4 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5cc505f4: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-03 05:02:01,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/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_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/hash_fun.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH --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 0abab60f5c601fd8191c1a2aa712d4ab55460e987c7d41ca7527c2934792cc0b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:02:04,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:02:04,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:02:04,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:02:04,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:02:04,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:02:04,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:02:04,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:02:04,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:02:04,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:02:04,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:02:04,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:02:04,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:02:04,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:02:04,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:02:04,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:02:04,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:02:04,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:02:04,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:02:04,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:02:04,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:02:04,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:02:04,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:02:04,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:02:04,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:02:04,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:02:04,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:02:04,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:02:04,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:02:04,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:02:04,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:02:04,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:02:04,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:02:04,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:02:04,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:02:04,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:02:04,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:02:04,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:02:04,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:02:04,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:02:04,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:02:04,350 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:02:04,376 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:02:04,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:02:04,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:02:04,377 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:02:04,378 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:02:04,378 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:02:04,378 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:02:04,378 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:02:04,378 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:02:04,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:02:04,379 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:02:04,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:02:04,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:02:04,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:02:04,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:02:04,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:02:04,381 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:02:04,381 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:02:04,381 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:02:04,381 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:02:04,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:02:04,382 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:02:04,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:02:04,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:02:04,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:02:04,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:02:04,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:02:04,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:02:04,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:02:04,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:02:04,383 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:02:04,384 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:02:04,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:02:04,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:02:04,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:02:04,384 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_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0abab60f5c601fd8191c1a2aa712d4ab55460e987c7d41ca7527c2934792cc0b [2021-11-03 05:02:04,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:02:04,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:02:04,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:02:04,740 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:02:04,741 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:02:04,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/heap-data/hash_fun.i [2021-11-03 05:02:04,822 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/data/9541c79d8/f6384eaae57d4c939632fe362c3e2023/FLAG8d14b74fa [2021-11-03 05:02:05,446 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:02:05,446 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/sv-benchmarks/c/heap-data/hash_fun.i [2021-11-03 05:02:05,493 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/data/9541c79d8/f6384eaae57d4c939632fe362c3e2023/FLAG8d14b74fa [2021-11-03 05:02:05,775 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/data/9541c79d8/f6384eaae57d4c939632fe362c3e2023 [2021-11-03 05:02:05,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:02:05,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:02:05,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:02:05,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:02:05,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:02:05,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:02:05" (1/1) ... [2021-11-03 05:02:05,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345c8de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:05, skipping insertion in model container [2021-11-03 05:02:05,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:02:05" (1/1) ... [2021-11-03 05:02:05,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:02:05,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:02:06,166 WARN L228 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_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/sv-benchmarks/c/heap-data/hash_fun.i[23732,23745] [2021-11-03 05:02:06,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:02:06,188 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:02:06,257 WARN L228 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_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/sv-benchmarks/c/heap-data/hash_fun.i[23732,23745] [2021-11-03 05:02:06,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:02:06,307 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:02:06,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:06 WrapperNode [2021-11-03 05:02:06,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:02:06,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:02:06,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:02:06,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:02:06,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:06" (1/1) ... [2021-11-03 05:02:06,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:06" (1/1) ... [2021-11-03 05:02:06,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:02:06,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:02:06,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:02:06,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:02:06,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:06" (1/1) ... [2021-11-03 05:02:06,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:06" (1/1) ... [2021-11-03 05:02:06,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:06" (1/1) ... [2021-11-03 05:02:06,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:06" (1/1) ... [2021-11-03 05:02:06,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:06" (1/1) ... [2021-11-03 05:02:06,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:06" (1/1) ... [2021-11-03 05:02:06,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:06" (1/1) ... [2021-11-03 05:02:06,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:02:06,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:02:06,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:02:06,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:02:06,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:06" (1/1) ... [2021-11-03 05:02:06,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:02:06,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:02:06,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:02:06,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:02:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:02:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:02:06,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:02:06,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:02:06,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:02:06,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:02:06,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:02:06,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 05:02:06,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:02:06,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:02:06,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:02:06,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:02:06,919 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-03 05:02:06,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:02:06 BoogieIcfgContainer [2021-11-03 05:02:06,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:02:06,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:02:06,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:02:06,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:02:06,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:02:05" (1/3) ... [2021-11-03 05:02:06,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa5411e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:02:06, skipping insertion in model container [2021-11-03 05:02:06,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:06" (2/3) ... [2021-11-03 05:02:06,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa5411e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:02:06, skipping insertion in model container [2021-11-03 05:02:06,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:02:06" (3/3) ... [2021-11-03 05:02:06,929 INFO L111 eAbstractionObserver]: Analyzing ICFG hash_fun.i [2021-11-03 05:02:06,934 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:02:06,935 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:02:06,986 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:02:06,992 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:02:06,993 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:02:07,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:07,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 05:02:07,013 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:02:07,014 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:02:07,014 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:02:07,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:07,020 INFO L85 PathProgramCache]: Analyzing trace with hash 256864415, now seen corresponding path program 1 times [2021-11-03 05:02:07,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:02:07,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130839271] [2021-11-03 05:02:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:07,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:02:07,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:02:07,038 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:02:07,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:02:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:07,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:02:07,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:07,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-03 05:02:07,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-03 05:02:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:07,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:07,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:02:07,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130839271] [2021-11-03 05:02:07,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130839271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:02:07,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:02:07,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:02:07,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869034608] [2021-11-03 05:02:07,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:02:07,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:02:07,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:02:07,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:02:07,573 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:07,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:02:07,742 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2021-11-03 05:02:07,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:02:07,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 05:02:07,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:02:07,753 INFO L225 Difference]: With dead ends: 35 [2021-11-03 05:02:07,753 INFO L226 Difference]: Without dead ends: 17 [2021-11-03 05:02:07,755 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:02:07,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-03 05:02:07,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-03 05:02:07,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2021-11-03 05:02:07,784 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 8 [2021-11-03 05:02:07,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:02:07,785 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2021-11-03 05:02:07,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:07,785 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2021-11-03 05:02:07,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 05:02:07,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:02:07,786 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:02:07,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 05:02:08,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:02:08,013 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:02:08,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:08,014 INFO L85 PathProgramCache]: Analyzing trace with hash 798628165, now seen corresponding path program 1 times [2021-11-03 05:02:08,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:02:08,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190872033] [2021-11-03 05:02:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:08,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:02:08,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:02:08,022 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:02:08,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:02:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:08,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-03 05:02:08,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:08,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:02:08,376 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 05:02:08,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 54 [2021-11-03 05:02:08,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 51 [2021-11-03 05:02:08,402 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:02:08,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 52 [2021-11-03 05:02:08,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-11-03 05:02:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:08,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:08,824 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 05:02:08,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 35 [2021-11-03 05:02:08,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-03 05:02:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:08,999 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:02:08,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190872033] [2021-11-03 05:02:08,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190872033] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:02:09,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [599657725] [2021-11-03 05:02:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:09,001 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:02:09,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:02:09,008 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:02:09,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-03 05:02:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:09,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-03 05:02:09,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:09,467 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 05:02:09,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 44 [2021-11-03 05:02:09,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2021-11-03 05:02:09,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2021-11-03 05:02:09,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:09,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:10,261 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 05:02:10,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 40 [2021-11-03 05:02:10,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-03 05:02:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:10,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [599657725] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:02:10,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208976734] [2021-11-03 05:02:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:10,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:02:10,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:02:10,523 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:02:10,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 05:02:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:10,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-03 05:02:10,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:10,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:02:10,820 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 05:02:10,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 54 [2021-11-03 05:02:10,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 51 [2021-11-03 05:02:10,849 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:02:10,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 52 [2021-11-03 05:02:10,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-11-03 05:02:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:11,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:11,148 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 05:02:11,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 36 [2021-11-03 05:02:11,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-03 05:02:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:11,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208976734] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:02:11,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:02:11,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7, 6, 6] total 16 [2021-11-03 05:02:11,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272257275] [2021-11-03 05:02:11,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 05:02:11,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:02:11,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 05:02:11,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:02:11,241 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:12,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:02:12,145 INFO L93 Difference]: Finished difference Result 39 states and 54 transitions. [2021-11-03 05:02:12,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:02:12,147 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 05:02:12,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:02:12,148 INFO L225 Difference]: With dead ends: 39 [2021-11-03 05:02:12,148 INFO L226 Difference]: Without dead ends: 24 [2021-11-03 05:02:12,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-11-03 05:02:12,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-03 05:02:12,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-11-03 05:02:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:12,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-11-03 05:02:12,155 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 12 [2021-11-03 05:02:12,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:02:12,155 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-11-03 05:02:12,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:12,156 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-11-03 05:02:12,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 05:02:12,157 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:02:12,157 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:02:12,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-11-03 05:02:12,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:12,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:12,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:02:12,761 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:02:12,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:12,761 INFO L85 PathProgramCache]: Analyzing trace with hash 2106589055, now seen corresponding path program 1 times [2021-11-03 05:02:12,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:02:12,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658651666] [2021-11-03 05:02:12,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:12,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:02:12,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:02:12,775 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:02:12,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:02:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:12,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-03 05:02:12,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:12,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:02:13,149 INFO L354 Elim1Store]: treesize reduction 59, result has 10.6 percent of original size [2021-11-03 05:02:13,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 86 [2021-11-03 05:02:13,161 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:13,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:02:13,200 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-03 05:02:13,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 71 [2021-11-03 05:02:13,229 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-03 05:02:13,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 70 [2021-11-03 05:02:13,250 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-03 05:02:13,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 44 [2021-11-03 05:02:13,251 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 05:02:13,462 INFO L354 Elim1Store]: treesize reduction 110, result has 16.0 percent of original size [2021-11-03 05:02:13,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 88 treesize of output 73 [2021-11-03 05:02:13,495 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-03 05:02:13,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 53 [2021-11-03 05:02:13,573 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 05:02:13,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 39 [2021-11-03 05:02:13,582 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 05:02:13,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-11-03 05:02:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:13,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:13,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:13,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:02:13,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:13,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-03 05:02:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:18,303 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:02:18,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658651666] [2021-11-03 05:02:18,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658651666] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:02:18,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1183179612] [2021-11-03 05:02:18,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:18,304 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:02:18,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:02:18,305 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:02:18,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-03 05:02:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:18,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 05:02:18,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:18,810 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:18,811 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:02:18,867 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-03 05:02:18,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 71 [2021-11-03 05:02:18,914 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-03 05:02:18,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 54 [2021-11-03 05:02:18,923 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:18,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 46 [2021-11-03 05:02:19,292 INFO L354 Elim1Store]: treesize reduction 75, result has 14.8 percent of original size [2021-11-03 05:02:19,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 90 treesize of output 75 [2021-11-03 05:02:19,344 INFO L354 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2021-11-03 05:02:19,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 66 treesize of output 59 [2021-11-03 05:02:19,524 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:19,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 34 [2021-11-03 05:02:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:19,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:19,828 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:19,830 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-03 05:02:19,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:19,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-11-03 05:02:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:20,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1183179612] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:02:20,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211784323] [2021-11-03 05:02:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:20,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:02:20,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:02:20,590 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:02:20,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 05:02:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:20,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-03 05:02:20,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:20,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:02:21,003 INFO L354 Elim1Store]: treesize reduction 59, result has 10.6 percent of original size [2021-11-03 05:02:21,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 86 [2021-11-03 05:02:21,058 INFO L354 Elim1Store]: treesize reduction 59, result has 10.6 percent of original size [2021-11-03 05:02:21,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 75 [2021-11-03 05:02:21,086 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-03 05:02:21,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 67 [2021-11-03 05:02:21,103 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-03 05:02:21,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 66 [2021-11-03 05:02:21,125 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-03 05:02:21,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 44 [2021-11-03 05:02:21,127 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 05:02:21,296 INFO L354 Elim1Store]: treesize reduction 120, result has 8.4 percent of original size [2021-11-03 05:02:21,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 88 treesize of output 63 [2021-11-03 05:02:21,327 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-03 05:02:21,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 51 [2021-11-03 05:02:21,403 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 05:02:21,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 39 [2021-11-03 05:02:21,410 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 05:02:21,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-11-03 05:02:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:21,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:21,544 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:21,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-03 05:02:21,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:21,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-03 05:02:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:22,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211784323] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:02:22,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:02:22,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-03 05:02:22,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959352502] [2021-11-03 05:02:22,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 05:02:22,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:02:22,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 05:02:22,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=141, Unknown=2, NotChecked=0, Total=182 [2021-11-03 05:02:22,136 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:27,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:02:27,364 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2021-11-03 05:02:27,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:02:27,366 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 05:02:27,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:02:27,366 INFO L225 Difference]: With dead ends: 41 [2021-11-03 05:02:27,366 INFO L226 Difference]: Without dead ends: 27 [2021-11-03 05:02:27,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 76 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=55, Invalid=182, Unknown=3, NotChecked=0, Total=240 [2021-11-03 05:02:27,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-03 05:02:27,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-03 05:02:27,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-11-03 05:02:27,373 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2021-11-03 05:02:27,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:02:27,373 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-11-03 05:02:27,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:27,374 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2021-11-03 05:02:27,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-03 05:02:27,375 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:02:27,375 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:02:27,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:27,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-03 05:02:27,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-03 05:02:27,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:02:27,983 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:02:27,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:27,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1436438119, now seen corresponding path program 2 times [2021-11-03 05:02:27,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:02:27,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529168447] [2021-11-03 05:02:27,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:02:27,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:02:27,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:02:27,985 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:02:27,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:02:28,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:02:28,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:02:28,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-03 05:02:28,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:28,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:02:28,480 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 05:02:28,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 50 [2021-11-03 05:02:28,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2021-11-03 05:02:28,530 INFO L354 Elim1Store]: treesize reduction 23, result has 42.5 percent of original size [2021-11-03 05:02:28,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 63 [2021-11-03 05:02:28,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-03 05:02:29,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:29,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-11-03 05:02:29,319 INFO L354 Elim1Store]: treesize reduction 134, result has 16.3 percent of original size [2021-11-03 05:02:29,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 190 treesize of output 162 [2021-11-03 05:02:29,420 INFO L354 Elim1Store]: treesize reduction 59, result has 10.6 percent of original size [2021-11-03 05:02:29,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 129 [2021-11-03 05:02:29,469 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-03 05:02:29,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 142 treesize of output 121 [2021-11-03 05:02:29,510 INFO L354 Elim1Store]: treesize reduction 33, result has 32.7 percent of original size [2021-11-03 05:02:29,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 154 [2021-11-03 05:02:29,565 INFO L354 Elim1Store]: treesize reduction 83, result has 7.8 percent of original size [2021-11-03 05:02:29,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 103 [2021-11-03 05:02:29,565 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 05:02:29,600 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-03 05:02:29,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 95 [2021-11-03 05:02:30,287 INFO L354 Elim1Store]: treesize reduction 120, result has 8.4 percent of original size [2021-11-03 05:02:30,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 154 treesize of output 101 [2021-11-03 05:02:30,366 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-03 05:02:30,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 101 [2021-11-03 05:02:30,401 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-11-03 05:02:30,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 67 [2021-11-03 05:02:31,249 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 05:02:31,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 87 [2021-11-03 05:02:31,261 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 05:02:31,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 68 [2021-11-03 05:02:31,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2021-11-03 05:02:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:31,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:31,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:31,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-03 05:02:31,766 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:31,769 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-11-03 05:02:31,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:31,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-11-03 05:02:31,777 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:31,778 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 05:02:31,781 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:31,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 258 [2021-11-03 05:02:43,997 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:44,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 301 [2021-11-03 05:02:44,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 297991 treesize of output 293639 [2021-11-03 05:02:48,275 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:02:48,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529168447] [2021-11-03 05:02:48,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-03 05:02:48,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1493154052] [2021-11-03 05:02:48,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:02:48,276 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:02:48,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:02:48,277 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:02:48,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-03 05:02:48,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:02:48,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:02:48,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-03 05:02:48,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:49,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-03 05:02:49,055 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 05:02:49,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 36 [2021-11-03 05:02:49,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2021-11-03 05:02:49,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2021-11-03 05:02:49,517 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:49,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-11-03 05:02:49,951 INFO L354 Elim1Store]: treesize reduction 86, result has 18.1 percent of original size [2021-11-03 05:02:49,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 167 treesize of output 139 [2021-11-03 05:02:50,056 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 05:02:50,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 106 [2021-11-03 05:02:50,123 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 05:02:50,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 107 [2021-11-03 05:02:50,136 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:50,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 87 [2021-11-03 05:02:50,163 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-11-03 05:02:50,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 118 [2021-11-03 05:02:50,164 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 05:02:50,177 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:50,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 94 [2021-11-03 05:02:51,097 INFO L354 Elim1Store]: treesize reduction 75, result has 14.8 percent of original size [2021-11-03 05:02:51,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 153 treesize of output 110 [2021-11-03 05:02:51,138 INFO L354 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2021-11-03 05:02:51,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 113 treesize of output 106 [2021-11-03 05:02:51,172 INFO L354 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2021-11-03 05:02:51,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 70 [2021-11-03 05:02:52,087 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:52,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 90 [2021-11-03 05:02:52,110 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-03 05:02:52,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 66 [2021-11-03 05:02:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:52,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:56,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:56,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 05:02:56,627 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:56,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-03 05:02:56,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:56,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-03 05:02:56,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:56,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-03 05:02:56,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:02:56,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-11-03 05:03:17,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:03:17,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 297 [2021-11-03 05:03:17,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37027 treesize of output 36483 [2021-11-03 05:03:17,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2904 treesize of output 2902 [2021-11-03 05:03:18,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-03 05:03:18,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500796757] [2021-11-03 05:03:18,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:03:18,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:03:18,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:03:18,048 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:03:18,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 05:03:18,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:03:18,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:03:18,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-03 05:03:18,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:18,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 05:03:19,124 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 05:03:19,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 61 [2021-11-03 05:03:19,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 58 [2021-11-03 05:03:19,175 INFO L354 Elim1Store]: treesize reduction 23, result has 42.5 percent of original size [2021-11-03 05:03:19,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 74 [2021-11-03 05:03:19,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2021-11-03 05:03:24,461 INFO L354 Elim1Store]: treesize reduction 59, result has 10.6 percent of original size [2021-11-03 05:03:24,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 187 treesize of output 163 [2021-11-03 05:03:24,694 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-03 05:03:24,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 176 treesize of output 155 [2021-11-03 05:03:24,851 INFO L354 Elim1Store]: treesize reduction 77, result has 19.8 percent of original size [2021-11-03 05:03:24,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 174 [2021-11-03 05:03:24,942 INFO L354 Elim1Store]: treesize reduction 190, result has 14.0 percent of original size [2021-11-03 05:03:24,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 187 treesize of output 138 [2021-11-03 05:03:24,996 INFO L354 Elim1Store]: treesize reduction 83, result has 7.8 percent of original size [2021-11-03 05:03:24,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 116 [2021-11-03 05:03:24,997 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-03 05:03:25,025 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-03 05:03:25,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 121 treesize of output 108 [2021-11-03 05:03:25,060 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-03 05:03:25,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 116 [2021-11-03 05:03:25,795 INFO L354 Elim1Store]: treesize reduction 120, result has 8.4 percent of original size [2021-11-03 05:03:25,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 157 treesize of output 100 [2021-11-03 05:03:25,829 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-11-03 05:03:25,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 83 [2021-11-03 05:03:25,887 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-03 05:03:25,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 92 treesize of output 81 [2021-11-03 05:03:26,348 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 05:03:26,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 90 [2021-11-03 05:03:26,356 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 05:03:26,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 63 [2021-11-03 05:03:26,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 32 [2021-11-03 05:03:26,393 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:03:26,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:26,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:03:26,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 05:03:26,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:03:26,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-03 05:03:26,749 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:03:26,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-11-03 05:03:26,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:03:26,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-11-03 05:03:26,758 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:03:26,759 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-03 05:03:28,935 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_append_to_list_~hash_13 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_append_to_list_~node~0.base_13 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (v_DerPreprocessor_27 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_append_to_list_~node~0.base_13)))) (bvslt (select (select (let ((.cse0 (store |c_#memory_int| v_ULTIMATE.start_append_to_list_~node~0.base_13 (store (store (select |c_#memory_int| v_ULTIMATE.start_append_to_list_~node~0.base_13) (_ bv4 32) v_DerPreprocessor_25) (_ bv0 32) v_ULTIMATE.start_append_to_list_~hash_13)))) (store .cse0 |c_ULTIMATE.start_main_~#list~0.base| (store (select .cse0 |c_ULTIMATE.start_main_~#list~0.base|) |c_ULTIMATE.start_main_~#list~0.offset| v_DerPreprocessor_17))) (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_append_to_list_~node~0.base_13 (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_append_to_list_~node~0.base_13) (_ bv4 32) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#list~0.base|) |c_ULTIMATE.start_main_~#list~0.offset|)) (_ bv0 32) v_DerPreprocessor_26)))) (store .cse1 |c_ULTIMATE.start_main_~#list~0.base| (store (select .cse1 |c_ULTIMATE.start_main_~#list~0.base|) |c_ULTIMATE.start_main_~#list~0.offset| v_ULTIMATE.start_append_to_list_~node~0.base_13))) v_ULTIMATE.start_append_to_list_~node~0.base_13) (_ bv4 32))) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_append_to_list_~node~0.base_13 (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_append_to_list_~node~0.base_13) (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#list~0.base|) |c_ULTIMATE.start_main_~#list~0.offset|)) (_ bv0 32) v_DerPreprocessor_27)))) (store .cse2 |c_ULTIMATE.start_main_~#list~0.base| (store (select .cse2 |c_ULTIMATE.start_main_~#list~0.base|) |c_ULTIMATE.start_main_~#list~0.offset| (_ bv0 32)))) v_ULTIMATE.start_append_to_list_~node~0.base_13) (_ bv4 32))) (bvadd (_ bv100 32) c_ULTIMATE.start_main_~base~0)))) is different from false [2021-11-03 05:03:34,360 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:03:34,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 304 [2021-11-03 05:03:34,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 596234 treesize of output 587530 [2021-11-03 05:03:42,811 WARN L207 SmtUtils]: Spent 8.02 s on a formula simplification. DAG size of input: 605 DAG size of output: 601 [2021-11-03 05:03:53,775 WARN L207 SmtUtils]: Spent 10.92 s on a formula simplification. DAG size of input: 601 DAG size of output: 588 [2021-11-03 05:03:53,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-03 05:03:53,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:03:53,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-03 05:03:53,785 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-03 05:03:53,785 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-03 05:03:53,791 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:03:53,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-03 05:03:54,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:54,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:54,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:54,411 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-11-03 05:03:54,413 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:03:54,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:03:54 BoogieIcfgContainer [2021-11-03 05:03:54,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:03:54,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:03:54,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:03:54,433 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:03:54,433 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:02:06" (3/4) ... [2021-11-03 05:03:54,436 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 05:03:54,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:03:54,437 INFO L168 Benchmark]: Toolchain (without parser) took 108657.41 ms. Allocated memory was 60.8 MB in the beginning and 312.5 MB in the end (delta: 251.7 MB). Free memory was 39.1 MB in the beginning and 130.6 MB in the end (delta: -91.5 MB). Peak memory consumption was 159.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:03:54,438 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 60.8 MB. Free memory is still 41.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:03:54,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.53 ms. Allocated memory is still 60.8 MB. Free memory was 39.0 MB in the beginning and 35.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:03:54,438 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.09 ms. Allocated memory is still 60.8 MB. Free memory was 35.5 MB in the beginning and 33.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:03:54,439 INFO L168 Benchmark]: Boogie Preprocessor took 31.43 ms. Allocated memory is still 60.8 MB. Free memory was 33.5 MB in the beginning and 31.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-03 05:03:54,439 INFO L168 Benchmark]: RCFGBuilder took 500.34 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 31.9 MB in the beginning and 55.1 MB in the end (delta: -23.2 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:03:54,440 INFO L168 Benchmark]: TraceAbstraction took 107509.03 ms. Allocated memory was 79.7 MB in the beginning and 312.5 MB in the end (delta: 232.8 MB). Free memory was 54.4 MB in the beginning and 130.6 MB in the end (delta: -76.1 MB). Peak memory consumption was 191.9 MB. Max. memory is 16.1 GB. [2021-11-03 05:03:54,440 INFO L168 Benchmark]: Witness Printer took 4.17 ms. Allocated memory is still 312.5 MB. Free memory is still 130.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:03:54,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 60.8 MB. Free memory is still 41.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 526.53 ms. Allocated memory is still 60.8 MB. Free memory was 39.0 MB in the beginning and 35.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.09 ms. Allocated memory is still 60.8 MB. Free memory was 35.5 MB in the beginning and 33.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.43 ms. Allocated memory is still 60.8 MB. Free memory was 33.5 MB in the beginning and 31.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 500.34 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 31.9 MB in the beginning and 55.1 MB in the end (delta: -23.2 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 107509.03 ms. Allocated memory was 79.7 MB in the beginning and 312.5 MB in the end (delta: 232.8 MB). Free memory was 54.4 MB in the beginning and 130.6 MB in the end (delta: -76.1 MB). Peak memory consumption was 191.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.17 ms. Allocated memory is still 312.5 MB. Free memory is still 130.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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: 592]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L580] struct node *list = ((void *)0); [L581] int base = __VERIFIER_nondet_int(); [L582] COND TRUE __VERIFIER_nondet_int() [L583] COND TRUE base >= 0 && base <= 1000000 [L584] base = base + 0 [L572] return __VERIFIER_nondet_int(); [L585] int hash = hash_fun(); [L586] COND TRUE hash > base && hash < base + 100 [L574] struct node *node = malloc(sizeof(*node)); [L575] EXPR \read(**list) [L575] node->next = *list [L576] node->hash = hash [L577] *list = node [L582] COND TRUE __VERIFIER_nondet_int() [L583] COND TRUE base >= 0 && base <= 1000000 [L584] base = base + 0 [L572] return __VERIFIER_nondet_int(); [L585] int hash = hash_fun(); [L586] COND TRUE hash > base && hash < base + 100 [L574] struct node *node = malloc(sizeof(*node)); [L575] EXPR \read(**list) [L575] node->next = *list [L576] node->hash = hash [L577] *list = node [L582] COND FALSE !(__VERIFIER_nondet_int()) [L590] \read(*list) [L590] COND TRUE \read(*list) [L591] EXPR \read(*list) [L591] EXPR list->hash [L591] EXPR list->hash >= base && list->hash < base + 100 [L591] EXPR \read(*list) [L591] EXPR list->hash [L591] EXPR list->hash >= base && list->hash < base + 100 [L591] COND FALSE !(!(list->hash >= base && list->hash < base + 100)) [L593] EXPR \read(*list) [L593] EXPR list->next [L593] list = list->next [L590] \read(*list) [L590] COND TRUE \read(*list) [L591] EXPR \read(*list) [L591] EXPR list->hash [L591] EXPR list->hash >= base && list->hash < base + 100 [L591] EXPR \read(*list) [L591] EXPR list->hash [L591] EXPR list->hash >= base && list->hash < base + 100 [L591] COND TRUE !(list->hash >= base && list->hash < base + 100) [L592] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 107.4s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 119 SDslu, 118 SDs, 0 SdLazy, 119 SolverSat, 71 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 185 GetRequests, 134 SyntacticMatches, 14 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 31.7s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 196 ConstructedInterpolants, 45 QuantifiedInterpolants, 5625 SizeOfPredicates, 142 NumberOfNonLiveVariables, 600 ConjunctsInSsa, 182 ConjunctsInUnsatCore, 15 InterpolantComputations, 2 PerfectInterpolantSequences, 16/46 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 05:03:54,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b6c5c30-6d5e-4905-a8ca-aa12c9edf21e/bin/utaipan-aC7eJsxGYH/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 Result: UNKNOWN