./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs --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 54165abed718b8d39f88748583b76365fb540324 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:55:26,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:55:26,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:55:26,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:55:26,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:55:26,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:55:26,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:55:26,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:55:26,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:55:26,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:55:26,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:55:26,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:55:26,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:55:26,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:55:26,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:55:26,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:55:26,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:55:26,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:55:26,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:55:26,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:55:26,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:55:26,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:55:26,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:55:26,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:55:26,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:55:26,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:55:26,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:55:26,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:55:26,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:55:26,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:55:26,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:55:26,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:55:26,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:55:26,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:55:26,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:55:26,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:55:26,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:55:26,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:55:26,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:55:26,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:55:26,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:55:26,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:55:26,668 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:55:26,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:55:26,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:55:26,669 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:55:26,670 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:55:26,670 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:55:26,670 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:55:26,670 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:55:26,671 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:55:26,671 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:55:26,671 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:55:26,671 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:55:26,672 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:55:26,672 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:55:26,672 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:55:26,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:55:26,673 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:55:26,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:55:26,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:55:26,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:55:26,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:55:26,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:55:26,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:55:26,675 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:55:26,675 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:55:26,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:55:26,676 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:55:26,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:55:26,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:55:26,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:55:26,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:55:26,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:55:26,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:55:26,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:55:26,678 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:55:26,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:55:26,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:55:26,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:55:26,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:55:26,679 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_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54165abed718b8d39f88748583b76365fb540324 [2021-10-16 02:55:26,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:55:27,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:55:27,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:55:27,011 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:55:27,012 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:55:27,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2021-10-16 02:55:27,113 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/data/2de2ec323/eb59b3be9ba3497cada501f2765a8da7/FLAGb67392ce3 [2021-10-16 02:55:27,729 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:55:27,730 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2021-10-16 02:55:27,749 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/data/2de2ec323/eb59b3be9ba3497cada501f2765a8da7/FLAGb67392ce3 [2021-10-16 02:55:28,013 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/data/2de2ec323/eb59b3be9ba3497cada501f2765a8da7 [2021-10-16 02:55:28,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:55:28,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:55:28,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:55:28,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:55:28,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:55:28,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:55:28" (1/1) ... [2021-10-16 02:55:28,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3982eef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:55:28, skipping insertion in model container [2021-10-16 02:55:28,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:55:28" (1/1) ... [2021-10-16 02:55:28,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:55:28,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:55:28,522 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_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/sv-benchmarks/c/heap-manipulation/merge_sort-1.i[22632,22645] [2021-10-16 02:55:28,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:55:28,598 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:55:28,661 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_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/sv-benchmarks/c/heap-manipulation/merge_sort-1.i[22632,22645] [2021-10-16 02:55:28,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:55:28,745 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:55:28,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:55:28 WrapperNode [2021-10-16 02:55:28,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:55:28,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:55:28,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:55:28,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:55:28,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:55:28" (1/1) ... [2021-10-16 02:55:28,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:55:28" (1/1) ... [2021-10-16 02:55:28,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:55:28,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:55:28,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:55:28,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:55:28,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:55:28" (1/1) ... [2021-10-16 02:55:28,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:55:28" (1/1) ... [2021-10-16 02:55:28,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:55:28" (1/1) ... [2021-10-16 02:55:28,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:55:28" (1/1) ... [2021-10-16 02:55:28,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:55:28" (1/1) ... [2021-10-16 02:55:28,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:55:28" (1/1) ... [2021-10-16 02:55:28,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:55:28" (1/1) ... [2021-10-16 02:55:28,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:55:28,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:55:28,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:55:28,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:55:28,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:55:28" (1/1) ... [2021-10-16 02:55:28,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:55:28,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:55:28,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:55:29,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:55:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:55:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:55:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:55:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:55:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:55:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:55:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:55:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:55:29,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:55:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:55:30,284 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:55:30,284 INFO L299 CfgBuilder]: Removed 75 assume(true) statements. [2021-10-16 02:55:30,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:55:30 BoogieIcfgContainer [2021-10-16 02:55:30,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:55:30,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:55:30,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:55:30,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:55:30,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:55:28" (1/3) ... [2021-10-16 02:55:30,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbfedbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:55:30, skipping insertion in model container [2021-10-16 02:55:30,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:55:28" (2/3) ... [2021-10-16 02:55:30,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbfedbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:55:30, skipping insertion in model container [2021-10-16 02:55:30,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:55:30" (3/3) ... [2021-10-16 02:55:30,298 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2021-10-16 02:55:30,305 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:55:30,306 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-10-16 02:55:30,364 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:55:30,371 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, mConcurrency=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 [2021-10-16 02:55:30,371 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-10-16 02:55:30,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 70 states have (on average 1.9428571428571428) internal successors, (136), 83 states have internal predecessors, (136), 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) [2021-10-16 02:55:30,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:55:30,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:55:30,395 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:55:30,396 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-16 02:55:30,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:55:30,403 INFO L82 PathProgramCache]: Analyzing trace with hash 415529033, now seen corresponding path program 1 times [2021-10-16 02:55:30,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:55:30,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973010410] [2021-10-16 02:55:30,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:55:30,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:55:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:55:30,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:55:30,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:55:30,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973010410] [2021-10-16 02:55:30,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973010410] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:55:30,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:55:30,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:55:30,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535194221] [2021-10-16 02:55:30,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:55:30,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:55:30,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:55:30,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:55:30,631 INFO L87 Difference]: Start difference. First operand has 84 states, 70 states have (on average 1.9428571428571428) internal successors, (136), 83 states have internal predecessors, (136), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-16 02:55:30,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:55:30,660 INFO L93 Difference]: Finished difference Result 165 states and 267 transitions. [2021-10-16 02:55:30,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:55:30,662 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 02:55:30,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:55:30,673 INFO L225 Difference]: With dead ends: 165 [2021-10-16 02:55:30,673 INFO L226 Difference]: Without dead ends: 79 [2021-10-16 02:55:30,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:55:30,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-16 02:55:30,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-10-16 02:55:30,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 78 states have internal predecessors, (85), 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) [2021-10-16 02:55:30,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2021-10-16 02:55:30,716 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 5 [2021-10-16 02:55:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:55:30,717 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2021-10-16 02:55:30,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-16 02:55:30,718 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2021-10-16 02:55:30,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:55:30,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:55:30,718 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:55:30,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:55:30,719 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-16 02:55:30,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:55:30,720 INFO L82 PathProgramCache]: Analyzing trace with hash -23616576, now seen corresponding path program 1 times [2021-10-16 02:55:30,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:55:30,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61127725] [2021-10-16 02:55:30,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:55:30,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:55:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:55:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:55:30,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:55:30,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61127725] [2021-10-16 02:55:30,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61127725] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:55:30,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:55:30,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:55:30,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621071771] [2021-10-16 02:55:30,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:55:30,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:55:30,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:55:30,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:55:30,782 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand has 3 states, 3 states have (on average 2.0) 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) [2021-10-16 02:55:30,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:55:30,830 INFO L93 Difference]: Finished difference Result 157 states and 169 transitions. [2021-10-16 02:55:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:55:30,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 [2021-10-16 02:55:30,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:55:30,833 INFO L225 Difference]: With dead ends: 157 [2021-10-16 02:55:30,834 INFO L226 Difference]: Without dead ends: 81 [2021-10-16 02:55:30,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:55:30,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-16 02:55:30,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-10-16 02:55:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 80 states have internal predecessors, (87), 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) [2021-10-16 02:55:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2021-10-16 02:55:30,856 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 6 [2021-10-16 02:55:30,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:55:30,857 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2021-10-16 02:55:30,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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) [2021-10-16 02:55:30,858 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2021-10-16 02:55:30,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:55:30,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:55:30,861 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-16 02:55:30,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:55:30,862 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-16 02:55:30,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:55:30,863 INFO L82 PathProgramCache]: Analyzing trace with hash 2044634814, now seen corresponding path program 1 times [2021-10-16 02:55:30,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:55:30,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349973991] [2021-10-16 02:55:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:55:30,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:55:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:55:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:55:31,040 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:55:31,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349973991] [2021-10-16 02:55:31,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349973991] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:55:31,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:55:31,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:55:31,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114871747] [2021-10-16 02:55:31,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:55:31,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:55:31,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:55:31,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:55:31,048 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. 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) [2021-10-16 02:55:31,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:55:31,223 INFO L93 Difference]: Finished difference Result 212 states and 231 transitions. [2021-10-16 02:55:31,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:55:31,224 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 [2021-10-16 02:55:31,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:55:31,227 INFO L225 Difference]: With dead ends: 212 [2021-10-16 02:55:31,230 INFO L226 Difference]: Without dead ends: 206 [2021-10-16 02:55:31,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:55:31,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-16 02:55:31,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 83. [2021-10-16 02:55:31,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 71 states have (on average 1.267605633802817) internal successors, (90), 82 states have internal predecessors, (90), 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) [2021-10-16 02:55:31,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2021-10-16 02:55:31,249 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 8 [2021-10-16 02:55:31,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:55:31,250 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2021-10-16 02:55:31,250 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) [2021-10-16 02:55:31,250 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2021-10-16 02:55:31,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:55:31,251 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:55:31,252 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:55:31,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:55:31,252 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-16 02:55:31,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:55:31,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1540621603, now seen corresponding path program 1 times [2021-10-16 02:55:31,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:55:31,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130892717] [2021-10-16 02:55:31,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:55:31,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:55:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:55:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:55:31,430 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:55:31,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130892717] [2021-10-16 02:55:31,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130892717] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:55:31,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:55:31,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:55:31,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939133123] [2021-10-16 02:55:31,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:55:31,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:55:31,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:55:31,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:55:31,441 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:55:31,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:55:31,806 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-10-16 02:55:31,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:55:31,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-16 02:55:31,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:55:31,808 INFO L225 Difference]: With dead ends: 110 [2021-10-16 02:55:31,808 INFO L226 Difference]: Without dead ends: 108 [2021-10-16 02:55:31,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:55:31,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-16 02:55:31,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 81. [2021-10-16 02:55:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 80 states have internal predecessors, (88), 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) [2021-10-16 02:55:31,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2021-10-16 02:55:31,827 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 15 [2021-10-16 02:55:31,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:55:31,827 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2021-10-16 02:55:31,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:55:31,828 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2021-10-16 02:55:31,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:55:31,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:55:31,829 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:55:31,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:55:31,830 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-16 02:55:31,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:55:31,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1518672590, now seen corresponding path program 1 times [2021-10-16 02:55:31,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:55:31,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644757975] [2021-10-16 02:55:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:55:31,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:55:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:55:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:55:31,973 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:55:31,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644757975] [2021-10-16 02:55:31,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644757975] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:55:31,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:55:31,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:55:31,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200276604] [2021-10-16 02:55:31,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:55:31,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:55:31,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:55:31,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:55:31,976 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:55:32,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:55:32,251 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-10-16 02:55:32,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:55:32,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-16 02:55:32,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:55:32,253 INFO L225 Difference]: With dead ends: 81 [2021-10-16 02:55:32,253 INFO L226 Difference]: Without dead ends: 79 [2021-10-16 02:55:32,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:55:32,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-16 02:55:32,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-10-16 02:55:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 78 states have internal predecessors, (86), 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) [2021-10-16 02:55:32,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2021-10-16 02:55:32,262 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 15 [2021-10-16 02:55:32,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:55:32,263 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2021-10-16 02:55:32,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:55:32,264 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2021-10-16 02:55:32,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:55:32,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:55:32,265 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:55:32,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:55:32,266 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-16 02:55:32,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:55:32,266 INFO L82 PathProgramCache]: Analyzing trace with hash 643616153, now seen corresponding path program 1 times [2021-10-16 02:55:32,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:55:32,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448258404] [2021-10-16 02:55:32,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:55:32,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:55:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:55:32,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:55:32,380 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:55:32,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448258404] [2021-10-16 02:55:32,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448258404] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:55:32,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:55:32,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:55:32,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008647660] [2021-10-16 02:55:32,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:55:32,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:55:32,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:55:32,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:55:32,383 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:55:32,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:55:32,643 INFO L93 Difference]: Finished difference Result 189 states and 205 transitions. [2021-10-16 02:55:32,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:55:32,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 02:55:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:55:32,647 INFO L225 Difference]: With dead ends: 189 [2021-10-16 02:55:32,647 INFO L226 Difference]: Without dead ends: 187 [2021-10-16 02:55:32,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:55:32,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-10-16 02:55:32,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 85. [2021-10-16 02:55:32,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 84 states have internal predecessors, (92), 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) [2021-10-16 02:55:32,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2021-10-16 02:55:32,657 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 18 [2021-10-16 02:55:32,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:55:32,657 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2021-10-16 02:55:32,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:55:32,658 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2021-10-16 02:55:32,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:55:32,658 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:55:32,659 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:55:32,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:55:32,659 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-16 02:55:32,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:55:32,660 INFO L82 PathProgramCache]: Analyzing trace with hash -404483557, now seen corresponding path program 1 times [2021-10-16 02:55:32,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:55:32,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659130536] [2021-10-16 02:55:32,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:55:32,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:55:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:55:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:55:32,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:55:32,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659130536] [2021-10-16 02:55:32,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659130536] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:55:32,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:55:32,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:55:32,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814811999] [2021-10-16 02:55:32,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:55:32,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:55:32,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:55:32,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:55:32,718 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:55:33,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:55:33,019 INFO L93 Difference]: Finished difference Result 187 states and 203 transitions. [2021-10-16 02:55:33,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:55:33,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 02:55:33,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:55:33,022 INFO L225 Difference]: With dead ends: 187 [2021-10-16 02:55:33,022 INFO L226 Difference]: Without dead ends: 185 [2021-10-16 02:55:33,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:55:33,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-16 02:55:33,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 91. [2021-10-16 02:55:33,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 90 states have internal predecessors, (98), 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) [2021-10-16 02:55:33,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2021-10-16 02:55:33,031 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 18 [2021-10-16 02:55:33,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:55:33,031 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2021-10-16 02:55:33,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:55:33,032 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2021-10-16 02:55:33,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-16 02:55:33,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:55:33,033 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:55:33,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 02:55:33,034 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-16 02:55:33,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:55:33,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1240790775, now seen corresponding path program 1 times [2021-10-16 02:55:33,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:55:33,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448883990] [2021-10-16 02:55:33,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:55:33,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:55:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:55:33,056 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:55:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:55:33,132 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:55:33,133 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:55:33,134 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:33,136 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:33,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:33,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:33,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:33,138 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:33,138 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:33,138 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:33,139 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:33,139 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:33,139 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:33,140 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:33,141 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:55:33,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:55:33,149 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:55:33,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:55:33 BoogieIcfgContainer [2021-10-16 02:55:33,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:55:33,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:55:33,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:55:33,205 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:55:33,206 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:55:30" (3/4) ... [2021-10-16 02:55:33,208 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:55:33,264 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:55:33,270 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:55:33,274 INFO L168 Benchmark]: Toolchain (without parser) took 5253.44 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 73.0 MB in the beginning and 51.3 MB in the end (delta: 21.7 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:55:33,275 INFO L168 Benchmark]: CDTParser took 1.19 ms. Allocated memory is still 94.4 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:55:33,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.99 ms. Allocated memory is still 94.4 MB. Free memory was 72.7 MB in the beginning and 60.4 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:55:33,277 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.40 ms. Allocated memory is still 94.4 MB. Free memory was 60.4 MB in the beginning and 57.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:55:33,277 INFO L168 Benchmark]: Boogie Preprocessor took 82.98 ms. Allocated memory is still 94.4 MB. Free memory was 57.7 MB in the beginning and 55.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:55:33,281 INFO L168 Benchmark]: RCFGBuilder took 1347.10 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 55.0 MB in the beginning and 70.3 MB in the end (delta: -15.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:55:33,282 INFO L168 Benchmark]: TraceAbstraction took 2914.06 ms. Allocated memory is still 115.3 MB. Free memory was 70.0 MB in the beginning and 54.2 MB in the end (delta: 15.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:55:33,282 INFO L168 Benchmark]: Witness Printer took 65.60 ms. Allocated memory is still 115.3 MB. Free memory was 54.2 MB in the beginning and 51.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:55:33,288 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.19 ms. Allocated memory is still 94.4 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 726.99 ms. Allocated memory is still 94.4 MB. Free memory was 72.7 MB in the beginning and 60.4 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 109.40 ms. Allocated memory is still 94.4 MB. Free memory was 60.4 MB in the beginning and 57.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.98 ms. Allocated memory is still 94.4 MB. Free memory was 57.7 MB in the beginning and 55.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1347.10 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 55.0 MB in the beginning and 70.3 MB in the end (delta: -15.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2914.06 ms. Allocated memory is still 115.3 MB. Free memory was 70.0 MB in the beginning and 54.2 MB in the end (delta: 15.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. * Witness Printer took 65.60 ms. Allocated memory is still 115.3 MB. Free memory was 54.2 MB in the beginning and 51.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 565]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L638] struct list *data = ((void *)0); [L639] COND TRUE __VERIFIER_nondet_int() [L640] struct node *node = malloc(sizeof *node); [L641] COND FALSE !(!node) [L643] node->next = node [L644] node->value = __VERIFIER_nondet_int() [L645] struct list *item = malloc(sizeof *item); [L646] COND FALSE !(!item) [L648] item->slist = node [L649] item->next = data [L650] data = item [L639] COND FALSE !(__VERIFIER_nondet_int()) [L652] COND FALSE !(!data) [L615] COND FALSE !(!(shape)) [L616] shape->next [L616] COND FALSE !(shape->next) [L622] COND FALSE !(!(shape)) [L623] EXPR shape->next [L623] COND FALSE !(!(shape->next == ((void *)0))) [L624] EXPR shape->slist [L624] COND FALSE !(!(shape->slist)) [L625] EXPR shape->slist [L625] EXPR shape->slist->next [L625] COND TRUE !(shape->slist->next == ((void *)0)) [L565] reach_error() - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 2784.7ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 17.3ms, AutomataDifference: 1534.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 488 SDtfs, 715 SDslu, 764 SDs, 0 SdLazy, 420 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1046.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 162.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=7, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 103.4ms AutomataMinimizationTime, 7 MinimizatonAttempts, 346 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.8ms SsaConstructionTime, 200.8ms SatisfiabilityAnalysisTime, 523.8ms InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 460 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 02:55:33,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd24dedf-2b23-40f9-bf0d-27e591cae3aa/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...