./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-ext-properties/simple-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/simple-ext.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79d8454f49f42d774b494771accf13f0b47382db45ac5cfdb4c7afee633f8cd7 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:26:03,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:26:03,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:26:03,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:26:03,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:26:03,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:26:03,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:26:03,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:26:03,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:26:03,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:26:03,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:26:03,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:26:03,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:26:03,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:26:03,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:26:03,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:26:03,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:26:03,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:26:03,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:26:03,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:26:03,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:26:03,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:26:03,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:26:03,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:26:03,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:26:03,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:26:03,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:26:03,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:26:03,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:26:03,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:26:03,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:26:03,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:26:03,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:26:03,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:26:03,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:26:03,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:26:03,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:26:03,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:26:03,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:26:03,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:26:03,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:26:03,797 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2021-11-25 18:26:03,857 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:26:03,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:26:03,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:26:03,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:26:03,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:26:03,860 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:26:03,860 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:26:03,860 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:26:03,860 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:26:03,861 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:26:03,862 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:26:03,862 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:26:03,862 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:26:03,863 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:26:03,863 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:26:03,863 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:26:03,863 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:26:03,864 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:26:03,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 18:26:03,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 18:26:03,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:26:03,866 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:26:03,866 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:26:03,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:26:03,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:26:03,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:26:03,867 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 18:26:03,867 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 18:26:03,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:26:03,868 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:26:03,868 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:26:03,868 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:26:03,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:26:03,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:26:03,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:26:03,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:26:03,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:26:03,870 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:26:03,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:26:03,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:26:03,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:26:03,873 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_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79d8454f49f42d774b494771accf13f0b47382db45ac5cfdb4c7afee633f8cd7 [2021-11-25 18:26:04,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:26:04,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:26:04,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:26:04,203 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:26:04,204 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:26:04,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/list-ext-properties/simple-ext.i [2021-11-25 18:26:04,261 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/data/64d40c128/531b794306af4350b9dc74d1ffbb184c/FLAGcbc09a674 [2021-11-25 18:26:04,753 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:26:04,753 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/sv-benchmarks/c/list-ext-properties/simple-ext.i [2021-11-25 18:26:04,771 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/data/64d40c128/531b794306af4350b9dc74d1ffbb184c/FLAGcbc09a674 [2021-11-25 18:26:05,281 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/data/64d40c128/531b794306af4350b9dc74d1ffbb184c [2021-11-25 18:26:05,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:26:05,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:26:05,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:26:05,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:26:05,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:26:05,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:26:05" (1/1) ... [2021-11-25 18:26:05,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ffc7a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:05, skipping insertion in model container [2021-11-25 18:26:05,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:26:05" (1/1) ... [2021-11-25 18:26:05,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:26:05,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:26:05,694 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/sv-benchmarks/c/list-ext-properties/simple-ext.i[23272,23285] [2021-11-25 18:26:05,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:26:05,708 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:26:05,747 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/sv-benchmarks/c/list-ext-properties/simple-ext.i[23272,23285] [2021-11-25 18:26:05,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:26:05,782 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:26:05,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:05 WrapperNode [2021-11-25 18:26:05,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:26:05,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:26:05,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:26:05,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:26:05,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:05" (1/1) ... [2021-11-25 18:26:05,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:05" (1/1) ... [2021-11-25 18:26:05,828 INFO L137 Inliner]: procedures = 124, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 78 [2021-11-25 18:26:05,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:26:05,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:26:05,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:26:05,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:26:05,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:05" (1/1) ... [2021-11-25 18:26:05,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:05" (1/1) ... [2021-11-25 18:26:05,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:05" (1/1) ... [2021-11-25 18:26:05,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:05" (1/1) ... [2021-11-25 18:26:05,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:05" (1/1) ... [2021-11-25 18:26:05,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:05" (1/1) ... [2021-11-25 18:26:05,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:05" (1/1) ... [2021-11-25 18:26:05,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:26:05,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:26:05,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:26:05,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:26:05,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:05" (1/1) ... [2021-11-25 18:26:05,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:26:05,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:26:05,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:26:05,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:26:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-25 18:26:05,937 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-25 18:26:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:26:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:26:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:26:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:26:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:26:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:26:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:26:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:26:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:26:05,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:26:06,027 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:26:06,029 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:26:06,072 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-25 18:26:06,224 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:26:06,268 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:26:06,269 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 18:26:06,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:26:06 BoogieIcfgContainer [2021-11-25 18:26:06,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:26:06,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:26:06,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:26:06,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:26:06,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:26:05" (1/3) ... [2021-11-25 18:26:06,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16415f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:26:06, skipping insertion in model container [2021-11-25 18:26:06,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:26:05" (2/3) ... [2021-11-25 18:26:06,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16415f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:26:06, skipping insertion in model container [2021-11-25 18:26:06,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:26:06" (3/3) ... [2021-11-25 18:26:06,280 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-ext.i [2021-11-25 18:26:06,286 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:26:06,286 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2021-11-25 18:26:06,332 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:26:06,340 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-25 18:26:06,340 INFO L340 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-11-25 18:26:06,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 46 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:26:06,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 18:26:06,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:26:06,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 18:26:06,364 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-11-25 18:26:06,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:26:06,370 INFO L85 PathProgramCache]: Analyzing trace with hash 144472609, now seen corresponding path program 1 times [2021-11-25 18:26:06,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:26:06,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079188902] [2021-11-25 18:26:06,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:26:06,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:26:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:26:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:26:06,523 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:26:06,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079188902] [2021-11-25 18:26:06,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079188902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:26:06,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:26:06,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:26:06,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966370975] [2021-11-25 18:26:06,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:26:06,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:26:06,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:26:06,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:26:06,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:26:06,562 INFO L87 Difference]: Start difference. First operand has 48 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 46 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 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) [2021-11-25 18:26:06,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:26:06,598 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-11-25 18:26:06,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:26:06,601 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 [2021-11-25 18:26:06,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:26:06,608 INFO L225 Difference]: With dead ends: 48 [2021-11-25 18:26:06,608 INFO L226 Difference]: Without dead ends: 43 [2021-11-25 18:26:06,610 INFO L932 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 [2021-11-25 18:26:06,613 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:26:06,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:26:06,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-25 18:26:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-25 18:26:06,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 42 states have internal predecessors, (45), 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) [2021-11-25 18:26:06,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2021-11-25 18:26:06,651 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 5 [2021-11-25 18:26:06,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:26:06,652 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2021-11-25 18:26:06,652 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) [2021-11-25 18:26:06,652 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2021-11-25 18:26:06,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:26:06,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:26:06,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:26:06,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:26:06,654 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-11-25 18:26:06,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:26:06,655 INFO L85 PathProgramCache]: Analyzing trace with hash 183758781, now seen corresponding path program 1 times [2021-11-25 18:26:06,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:26:06,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379843747] [2021-11-25 18:26:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:26:06,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:26:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:26:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:26:06,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:26:06,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379843747] [2021-11-25 18:26:06,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379843747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:26:06,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:26:06,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:26:06,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361991264] [2021-11-25 18:26:06,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:26:06,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:26:06,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:26:06,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:26:06,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:26:06,721 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:26:06,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:26:06,848 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2021-11-25 18:26:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:26:06,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 18:26:06,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:26:06,850 INFO L225 Difference]: With dead ends: 57 [2021-11-25 18:26:06,850 INFO L226 Difference]: Without dead ends: 57 [2021-11-25 18:26:06,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:26:06,872 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 70 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:26:06,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 15 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:26:06,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-25 18:26:06,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2021-11-25 18:26:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 45 states have internal predecessors, (55), 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) [2021-11-25 18:26:06,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2021-11-25 18:26:06,881 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 6 [2021-11-25 18:26:06,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:26:06,881 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2021-11-25 18:26:06,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:26:06,882 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2021-11-25 18:26:06,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:26:06,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:26:06,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:26:06,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:26:06,883 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-11-25 18:26:06,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:26:06,884 INFO L85 PathProgramCache]: Analyzing trace with hash 183758782, now seen corresponding path program 1 times [2021-11-25 18:26:06,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:26:06,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792723831] [2021-11-25 18:26:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:26:06,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:26:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:26:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:26:06,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:26:06,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792723831] [2021-11-25 18:26:06,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792723831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:26:06,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:26:06,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:26:06,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648166484] [2021-11-25 18:26:06,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:26:06,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:26:06,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:26:06,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:26:06,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:26:06,964 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:26:07,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:26:07,088 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2021-11-25 18:26:07,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:26:07,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 18:26:07,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:26:07,090 INFO L225 Difference]: With dead ends: 85 [2021-11-25 18:26:07,090 INFO L226 Difference]: Without dead ends: 85 [2021-11-25 18:26:07,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:26:07,092 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 56 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:26:07,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 41 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:26:07,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-25 18:26:07,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2021-11-25 18:26:07,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 59 states have internal predecessors, (75), 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) [2021-11-25 18:26:07,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2021-11-25 18:26:07,102 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 6 [2021-11-25 18:26:07,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:26:07,102 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2021-11-25 18:26:07,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:26:07,103 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2021-11-25 18:26:07,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 18:26:07,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:26:07,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:26:07,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:26:07,104 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-11-25 18:26:07,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:26:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1946737033, now seen corresponding path program 1 times [2021-11-25 18:26:07,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:26:07,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650464434] [2021-11-25 18:26:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:26:07,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:26:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:26:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:26:07,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:26:07,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650464434] [2021-11-25 18:26:07,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650464434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:26:07,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:26:07,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:26:07,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237969765] [2021-11-25 18:26:07,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:26:07,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:26:07,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:26:07,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:26:07,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:26:07,217 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2021-11-25 18:26:07,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:26:07,301 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2021-11-25 18:26:07,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:26:07,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-25 18:26:07,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:26:07,303 INFO L225 Difference]: With dead ends: 72 [2021-11-25 18:26:07,305 INFO L226 Difference]: Without dead ends: 72 [2021-11-25 18:26:07,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:26:07,308 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 70 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:26:07,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 30 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:26:07,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-25 18:26:07,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2021-11-25 18:26:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 59 states have internal predecessors, (71), 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) [2021-11-25 18:26:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2021-11-25 18:26:07,322 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 10 [2021-11-25 18:26:07,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:26:07,322 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2021-11-25 18:26:07,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2021-11-25 18:26:07,323 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2021-11-25 18:26:07,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:26:07,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:26:07,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:26:07,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:26:07,324 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-11-25 18:26:07,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:26:07,326 INFO L85 PathProgramCache]: Analyzing trace with hash -221270335, now seen corresponding path program 1 times [2021-11-25 18:26:07,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:26:07,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939332113] [2021-11-25 18:26:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:26:07,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:26:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:26:07,355 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 18:26:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:26:07,394 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 18:26:07,394 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 18:26:07,395 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (20 of 21 remaining) [2021-11-25 18:26:07,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (19 of 21 remaining) [2021-11-25 18:26:07,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (18 of 21 remaining) [2021-11-25 18:26:07,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (17 of 21 remaining) [2021-11-25 18:26:07,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (16 of 21 remaining) [2021-11-25 18:26:07,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (15 of 21 remaining) [2021-11-25 18:26:07,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (14 of 21 remaining) [2021-11-25 18:26:07,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (13 of 21 remaining) [2021-11-25 18:26:07,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (12 of 21 remaining) [2021-11-25 18:26:07,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (11 of 21 remaining) [2021-11-25 18:26:07,400 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (10 of 21 remaining) [2021-11-25 18:26:07,400 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (9 of 21 remaining) [2021-11-25 18:26:07,400 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (8 of 21 remaining) [2021-11-25 18:26:07,401 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (7 of 21 remaining) [2021-11-25 18:26:07,401 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (6 of 21 remaining) [2021-11-25 18:26:07,401 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (5 of 21 remaining) [2021-11-25 18:26:07,401 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (4 of 21 remaining) [2021-11-25 18:26:07,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (3 of 21 remaining) [2021-11-25 18:26:07,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (2 of 21 remaining) [2021-11-25 18:26:07,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE (1 of 21 remaining) [2021-11-25 18:26:07,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (0 of 21 remaining) [2021-11-25 18:26:07,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:26:07,407 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-25 18:26:07,410 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:26:07,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:26:07 BoogieIcfgContainer [2021-11-25 18:26:07,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:26:07,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:26:07,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:26:07,433 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:26:07,433 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:26:06" (3/4) ... [2021-11-25 18:26:07,435 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 18:26:07,470 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 18:26:07,470 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:26:07,471 INFO L158 Benchmark]: Toolchain (without parser) took 2180.09ms. Allocated memory was 88.1MB in the beginning and 121.6MB in the end (delta: 33.6MB). Free memory was 49.8MB in the beginning and 65.8MB in the end (delta: -16.0MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2021-11-25 18:26:07,471 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory is still 67.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:26:07,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.05ms. Allocated memory was 88.1MB in the beginning and 121.6MB in the end (delta: 33.6MB). Free memory was 49.6MB in the beginning and 89.4MB in the end (delta: -39.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-25 18:26:07,472 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.67ms. Allocated memory is still 121.6MB. Free memory was 89.4MB in the beginning and 87.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:26:07,472 INFO L158 Benchmark]: Boogie Preprocessor took 29.52ms. Allocated memory is still 121.6MB. Free memory was 87.2MB in the beginning and 85.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:26:07,473 INFO L158 Benchmark]: RCFGBuilder took 411.98ms. Allocated memory is still 121.6MB. Free memory was 85.8MB in the beginning and 69.6MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-25 18:26:07,473 INFO L158 Benchmark]: TraceAbstraction took 1158.32ms. Allocated memory is still 121.6MB. Free memory was 69.6MB in the beginning and 67.1MB in the end (delta: 2.5MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2021-11-25 18:26:07,473 INFO L158 Benchmark]: Witness Printer took 37.94ms. Allocated memory is still 121.6MB. Free memory was 67.1MB in the beginning and 65.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:26:07,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory is still 67.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 490.05ms. Allocated memory was 88.1MB in the beginning and 121.6MB in the end (delta: 33.6MB). Free memory was 49.6MB in the beginning and 89.4MB in the end (delta: -39.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.67ms. Allocated memory is still 121.6MB. Free memory was 89.4MB in the beginning and 87.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.52ms. Allocated memory is still 121.6MB. Free memory was 87.2MB in the beginning and 85.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 411.98ms. Allocated memory is still 121.6MB. Free memory was 85.8MB in the beginning and 69.6MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1158.32ms. Allocated memory is still 121.6MB. Free memory was 69.6MB in the beginning and 67.1MB in the end (delta: 2.5MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * Witness Printer took 37.94ms. Allocated memory is still 121.6MB. Free memory was 67.1MB in the beginning and 65.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 551]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; [L536] int i = 0; VAL [a={-1:0}, i=0, p={-1:0}] [L537] i < 30 && __VERIFIER_nondet_int() [L537] i < 30 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 30 && __VERIFIER_nondet_int()=0, p={-1:0}] [L537] COND FALSE !(i < 30 && __VERIFIER_nondet_int()) [L545] p->h = i VAL [a={-1:0}, i=0, p={-1:0}] [L546] p->n = 0 [L547] p = a [L548] i = 0 VAL [a={-1:0}, i=0, p={-1:0}] [L549] COND TRUE p!=0 VAL [a={-1:0}, i=0, p={-1:0}] [L550] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=0] [L550] COND TRUE p->h != 1 [L551] reach_error() VAL [a={-1:0}, i=0, p={-1:0}] - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 558]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 558]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 49 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 196 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 196 mSDsluCounter, 128 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 191 IncrementalHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 88 mSDtfsCounter, 191 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=3, InterpolantAutomatonStates: 16, 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, 4 MinimizatonAttempts, 48 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 118 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-25 18:26:07,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfa3dc69-f63f-4794-8751-49e0b7afc4c8/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)