./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/bin/uautomizer --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 Automizer --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 0.2.0-a4ecdab [2020-11-29 23:58:17,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:58:17,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:58:17,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:58:17,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:58:17,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:58:17,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:58:17,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:58:17,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:58:17,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:58:17,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:58:17,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:58:17,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:58:17,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:58:17,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:58:17,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:58:17,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:58:17,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:58:17,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:58:17,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:58:17,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:58:17,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:58:17,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:58:17,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:58:17,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:58:17,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:58:17,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:58:17,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:58:17,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:58:17,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:58:17,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:58:17,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:58:17,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:58:17,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:58:17,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:58:17,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:58:17,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:58:17,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:58:17,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:58:17,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:58:17,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:58:17,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:58:17,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:58:17,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:58:17,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:58:17,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:58:17,869 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:58:17,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:58:17,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:58:17,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:58:17,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:58:17,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:58:17,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:58:17,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:58:17,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:58:17,872 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:58:17,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:58:17,873 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:58:17,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:58:17,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:58:17,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:58:17,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:58:17,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:58:17,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:58:17,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:58:17,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:58:17,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:58:17,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:58:17,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:58:17,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:58:17,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:58:17,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54165abed718b8d39f88748583b76365fb540324 [2020-11-29 23:58:18,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:58:18,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:58:18,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:58:18,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:58:18,229 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:58:18,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/bin/uautomizer/../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2020-11-29 23:58:18,322 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/bin/uautomizer/data/9452fd922/b37102c8284e455fb143a345bcce21ec/FLAGe01e1ef01 [2020-11-29 23:58:18,923 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:58:18,927 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2020-11-29 23:58:18,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/bin/uautomizer/data/9452fd922/b37102c8284e455fb143a345bcce21ec/FLAGe01e1ef01 [2020-11-29 23:58:19,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/bin/uautomizer/data/9452fd922/b37102c8284e455fb143a345bcce21ec [2020-11-29 23:58:19,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:58:19,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:58:19,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:19,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:58:19,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:58:19,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:19" (1/1) ... [2020-11-29 23:58:19,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763f3989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:19, skipping insertion in model container [2020-11-29 23:58:19,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:19" (1/1) ... [2020-11-29 23:58:19,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:58:19,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:58:19,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:19,667 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:58:19,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:19,782 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:58:19,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:19 WrapperNode [2020-11-29 23:58:19,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:19,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:19,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:58:19,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:58:19,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:19" (1/1) ... [2020-11-29 23:58:19,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:19" (1/1) ... [2020-11-29 23:58:19,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:19,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:58:19,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:58:19,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:58:19,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:19" (1/1) ... [2020-11-29 23:58:19,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:19" (1/1) ... [2020-11-29 23:58:19,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:19" (1/1) ... [2020-11-29 23:58:19,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:19" (1/1) ... [2020-11-29 23:58:19,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:19" (1/1) ... [2020-11-29 23:58:19,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:19" (1/1) ... [2020-11-29 23:58:19,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:19" (1/1) ... [2020-11-29 23:58:19,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:58:19,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:58:19,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:58:19,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:58:19,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:58:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:58:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:58:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 23:58:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 23:58:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:58:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 23:58:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:58:19,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:58:19,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:58:19,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:58:21,207 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:58:21,208 INFO L298 CfgBuilder]: Removed 101 assume(true) statements. [2020-11-29 23:58:21,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:21 BoogieIcfgContainer [2020-11-29 23:58:21,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:58:21,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:58:21,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:58:21,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:58:21,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:58:19" (1/3) ... [2020-11-29 23:58:21,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b37e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:58:21, skipping insertion in model container [2020-11-29 23:58:21,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:19" (2/3) ... [2020-11-29 23:58:21,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b37e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:58:21, skipping insertion in model container [2020-11-29 23:58:21,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:21" (3/3) ... [2020-11-29 23:58:21,223 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-11-29 23:58:21,241 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:58:21,246 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-11-29 23:58:21,260 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-11-29 23:58:21,308 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:58:21,309 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:58:21,309 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:58:21,309 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:58:21,309 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:58:21,310 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:58:21,310 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:58:21,310 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:58:21,338 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-11-29 23:58:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 23:58:21,347 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:21,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:21,348 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:21,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:21,353 INFO L82 PathProgramCache]: Analyzing trace with hash 801802348, now seen corresponding path program 1 times [2020-11-29 23:58:21,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:21,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526830348] [2020-11-29 23:58:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:21,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526830348] [2020-11-29 23:58:21,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:21,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:58:21,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789898713] [2020-11-29 23:58:21,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:58:21,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:21,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:58:21,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:58:21,507 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 2 states. [2020-11-29 23:58:21,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:21,561 INFO L93 Difference]: Finished difference Result 261 states and 407 transitions. [2020-11-29 23:58:21,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:58:21,562 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 23:58:21,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:21,582 INFO L225 Difference]: With dead ends: 261 [2020-11-29 23:58:21,583 INFO L226 Difference]: Without dead ends: 118 [2020-11-29 23:58:21,589 INFO L677 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 [2020-11-29 23:58:21,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-29 23:58:21,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-11-29 23:58:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-11-29 23:58:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2020-11-29 23:58:21,654 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 8 [2020-11-29 23:58:21,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:21,654 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2020-11-29 23:58:21,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:58:21,655 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2020-11-29 23:58:21,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 23:58:21,655 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:21,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:21,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:58:21,656 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:21,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:21,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1230623071, now seen corresponding path program 1 times [2020-11-29 23:58:21,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:21,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307368249] [2020-11-29 23:58:21,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:21,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307368249] [2020-11-29 23:58:21,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:21,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:58:21,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492362300] [2020-11-29 23:58:21,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:58:21,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:21,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:58:21,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:58:21,753 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand 3 states. [2020-11-29 23:58:21,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:21,804 INFO L93 Difference]: Finished difference Result 234 states and 254 transitions. [2020-11-29 23:58:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:58:21,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 23:58:21,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:21,809 INFO L225 Difference]: With dead ends: 234 [2020-11-29 23:58:21,809 INFO L226 Difference]: Without dead ends: 124 [2020-11-29 23:58:21,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:58:21,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-29 23:58:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2020-11-29 23:58:21,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-29 23:58:21,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 130 transitions. [2020-11-29 23:58:21,823 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 130 transitions. Word has length 9 [2020-11-29 23:58:21,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:21,823 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 130 transitions. [2020-11-29 23:58:21,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:58:21,823 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions. [2020-11-29 23:58:21,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:58:21,824 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:21,824 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:21,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:58:21,825 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:21,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:21,825 INFO L82 PathProgramCache]: Analyzing trace with hash -2072993674, now seen corresponding path program 1 times [2020-11-29 23:58:21,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:21,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544444335] [2020-11-29 23:58:21,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:21,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:21,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544444335] [2020-11-29 23:58:21,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:21,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:58:21,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327954620] [2020-11-29 23:58:21,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:58:21,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:21,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:58:21,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:58:21,954 INFO L87 Difference]: Start difference. First operand 120 states and 130 transitions. Second operand 5 states. [2020-11-29 23:58:22,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:22,179 INFO L93 Difference]: Finished difference Result 319 states and 354 transitions. [2020-11-29 23:58:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:58:22,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-29 23:58:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:22,187 INFO L225 Difference]: With dead ends: 319 [2020-11-29 23:58:22,190 INFO L226 Difference]: Without dead ends: 307 [2020-11-29 23:58:22,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:58:22,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-11-29 23:58:22,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 120. [2020-11-29 23:58:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-29 23:58:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2020-11-29 23:58:22,214 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 15 [2020-11-29 23:58:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:22,215 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 131 transitions. [2020-11-29 23:58:22,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:58:22,216 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 131 transitions. [2020-11-29 23:58:22,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 23:58:22,217 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:22,217 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:22,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:58:22,218 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:22,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:22,218 INFO L82 PathProgramCache]: Analyzing trace with hash -63750243, now seen corresponding path program 1 times [2020-11-29 23:58:22,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:22,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913316832] [2020-11-29 23:58:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 23:58:22,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913316832] [2020-11-29 23:58:22,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:22,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:58:22,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573543034] [2020-11-29 23:58:22,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:58:22,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:22,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:58:22,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:58:22,381 INFO L87 Difference]: Start difference. First operand 120 states and 131 transitions. Second operand 5 states. [2020-11-29 23:58:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:22,748 INFO L93 Difference]: Finished difference Result 157 states and 171 transitions. [2020-11-29 23:58:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:58:22,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-29 23:58:22,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:22,752 INFO L225 Difference]: With dead ends: 157 [2020-11-29 23:58:22,753 INFO L226 Difference]: Without dead ends: 153 [2020-11-29 23:58:22,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:58:22,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-29 23:58:22,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 116. [2020-11-29 23:58:22,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-29 23:58:22,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2020-11-29 23:58:22,778 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 22 [2020-11-29 23:58:22,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:22,778 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2020-11-29 23:58:22,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:58:22,778 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2020-11-29 23:58:22,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 23:58:22,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:22,779 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:22,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 23:58:22,780 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:22,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:22,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1036064776, now seen corresponding path program 1 times [2020-11-29 23:58:22,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:22,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773945194] [2020-11-29 23:58:22,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 23:58:22,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773945194] [2020-11-29 23:58:22,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:22,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:58:22,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581626942] [2020-11-29 23:58:22,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:58:22,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:22,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:58:22,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:58:22,965 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand 5 states. [2020-11-29 23:58:23,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:23,229 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2020-11-29 23:58:23,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:58:23,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-29 23:58:23,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:23,231 INFO L225 Difference]: With dead ends: 116 [2020-11-29 23:58:23,231 INFO L226 Difference]: Without dead ends: 112 [2020-11-29 23:58:23,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:58:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-29 23:58:23,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-11-29 23:58:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-29 23:58:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2020-11-29 23:58:23,258 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 22 [2020-11-29 23:58:23,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:23,259 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2020-11-29 23:58:23,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:58:23,259 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2020-11-29 23:58:23,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 23:58:23,260 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:23,260 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:23,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 23:58:23,261 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:23,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:23,261 INFO L82 PathProgramCache]: Analyzing trace with hash -792261703, now seen corresponding path program 1 times [2020-11-29 23:58:23,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:23,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239192134] [2020-11-29 23:58:23,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:23,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239192134] [2020-11-29 23:58:23,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:23,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 23:58:23,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501843600] [2020-11-29 23:58:23,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:58:23,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:23,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:58:23,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:58:23,355 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 7 states. [2020-11-29 23:58:23,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:23,797 INFO L93 Difference]: Finished difference Result 262 states and 282 transitions. [2020-11-29 23:58:23,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:58:23,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-29 23:58:23,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:23,800 INFO L225 Difference]: With dead ends: 262 [2020-11-29 23:58:23,800 INFO L226 Difference]: Without dead ends: 258 [2020-11-29 23:58:23,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-11-29 23:58:23,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-11-29 23:58:23,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 118. [2020-11-29 23:58:23,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-11-29 23:58:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2020-11-29 23:58:23,820 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 25 [2020-11-29 23:58:23,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:23,820 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2020-11-29 23:58:23,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:58:23,820 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2020-11-29 23:58:23,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 23:58:23,821 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:23,822 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:23,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 23:58:23,822 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:23,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:23,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1786321243, now seen corresponding path program 1 times [2020-11-29 23:58:23,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:23,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775797396] [2020-11-29 23:58:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:23,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775797396] [2020-11-29 23:58:23,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:23,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 23:58:23,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668796682] [2020-11-29 23:58:23,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:58:23,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:23,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:58:23,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:58:23,948 INFO L87 Difference]: Start difference. First operand 118 states and 129 transitions. Second operand 7 states. [2020-11-29 23:58:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:24,288 INFO L93 Difference]: Finished difference Result 258 states and 278 transitions. [2020-11-29 23:58:24,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:58:24,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-29 23:58:24,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:24,290 INFO L225 Difference]: With dead ends: 258 [2020-11-29 23:58:24,291 INFO L226 Difference]: Without dead ends: 254 [2020-11-29 23:58:24,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-11-29 23:58:24,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-11-29 23:58:24,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 124. [2020-11-29 23:58:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-29 23:58:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2020-11-29 23:58:24,307 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 25 [2020-11-29 23:58:24,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:24,308 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2020-11-29 23:58:24,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:58:24,308 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2020-11-29 23:58:24,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 23:58:24,313 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:24,313 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:24,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 23:58:24,314 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:24,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:24,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1407392071, now seen corresponding path program 1 times [2020-11-29 23:58:24,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:24,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253888708] [2020-11-29 23:58:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:24,339 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:24,359 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:24,391 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:24,391 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:58:24,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 23:58:24,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:58:24 BoogieIcfgContainer [2020-11-29 23:58:24,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:58:24,433 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:58:24,433 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:58:24,433 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:58:24,434 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:21" (3/4) ... [2020-11-29 23:58:24,436 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 23:58:24,480 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7c7bebc2-6356-41f5-b5f8-84ff5ef688a9/bin/uautomizer/witness.graphml [2020-11-29 23:58:24,481 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:58:24,483 INFO L168 Benchmark]: Toolchain (without parser) took 5308.24 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 68.2 MB in the beginning and 64.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:24,483 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 75.5 MB. Free memory was 37.8 MB in the beginning and 37.8 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:24,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 608.45 ms. Allocated memory is still 100.7 MB. Free memory was 67.9 MB in the beginning and 64.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:24,484 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.94 ms. Allocated memory is still 100.7 MB. Free memory was 64.0 MB in the beginning and 61.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:24,485 INFO L168 Benchmark]: Boogie Preprocessor took 57.88 ms. Allocated memory is still 100.7 MB. Free memory was 61.3 MB in the beginning and 58.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:24,486 INFO L168 Benchmark]: RCFGBuilder took 1290.14 ms. Allocated memory is still 100.7 MB. Free memory was 58.2 MB in the beginning and 54.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:24,486 INFO L168 Benchmark]: TraceAbstraction took 3220.32 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 54.9 MB in the beginning and 66.7 MB in the end (delta: -11.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:24,487 INFO L168 Benchmark]: Witness Printer took 47.87 ms. Allocated memory is still 127.9 MB. Free memory was 66.7 MB in the beginning and 64.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:24,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 75.5 MB. Free memory was 37.8 MB in the beginning and 37.8 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 608.45 ms. Allocated memory is still 100.7 MB. Free memory was 67.9 MB in the beginning and 64.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.94 ms. Allocated memory is still 100.7 MB. Free memory was 64.0 MB in the beginning and 61.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.88 ms. Allocated memory is still 100.7 MB. Free memory was 61.3 MB in the beginning and 58.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1290.14 ms. Allocated memory is still 100.7 MB. Free memory was 58.2 MB in the beginning and 54.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3220.32 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 54.9 MB in the beginning and 66.7 MB in the end (delta: -11.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * Witness Printer took 47.87 ms. Allocated memory is still 127.9 MB. Free memory was 66.7 MB in the beginning and 64.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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)) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "merge_sort-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 138 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 764 SDtfs, 2202 SDslu, 1267 SDs, 0 SdLazy, 504 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 498 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 11223 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! Received shutdown request...