./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0158-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c653497-f536-4acb-b3d4-7dba40bed3a9/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c653497-f536-4acb-b3d4-7dba40bed3a9/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c653497-f536-4acb-b3d4-7dba40bed3a9/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c653497-f536-4acb-b3d4-7dba40bed3a9/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0158-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c653497-f536-4acb-b3d4-7dba40bed3a9/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c653497-f536-4acb-b3d4-7dba40bed3a9/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8faa7ab505618d5a6c508309045d02d3235f2a80 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:25:54,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:25:54,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:25:54,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:25:54,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:25:54,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:25:54,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:25:54,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:25:54,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:25:54,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:25:54,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:25:54,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:25:54,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:25:54,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:25:54,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:25:54,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:25:54,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:25:54,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:25:54,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:25:54,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:25:54,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:25:54,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:25:54,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:25:54,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:25:54,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:25:54,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:25:54,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:25:54,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:25:54,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:25:54,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:25:54,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:25:54,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:25:54,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:25:54,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:25:54,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:25:54,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:25:54,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:25:54,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:25:54,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:25:54,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:25:54,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:25:54,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c653497-f536-4acb-b3d4-7dba40bed3a9/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:25:54,802 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:25:54,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:25:54,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:25:54,804 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:25:54,805 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:25:54,805 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:25:54,805 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:25:54,805 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:25:54,806 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:25:54,806 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:25:54,807 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:25:54,807 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:25:54,808 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:25:54,808 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:25:54,808 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:25:54,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:25:54,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:25:54,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:25:54,810 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:25:54,810 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:25:54,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:25:54,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:25:54,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:25:54,811 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:25:54,811 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:25:54,812 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:25:54,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:25:54,814 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:25:54,814 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:25:54,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:25:54,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:25:54,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:25:54,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:54,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:25:54,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:25:54,816 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:25:54,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:25:54,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:25:54,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:25:54,817 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_4c653497-f536-4acb-b3d4-7dba40bed3a9/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c653497-f536-4acb-b3d4-7dba40bed3a9/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8faa7ab505618d5a6c508309045d02d3235f2a80 [2021-10-11 02:25:55,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:25:55,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:25:55,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:25:55,120 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:25:55,121 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:25:55,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c653497-f536-4acb-b3d4-7dba40bed3a9/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/memsafety/test-0158-1.i [2021-10-11 02:25:55,194 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c653497-f536-4acb-b3d4-7dba40bed3a9/bin/utaipan-WLngWcDbfI/data/685f3e366/5f3ceb109a6d4db68505db6bea51de0c/FLAGf1c1b9658 [2021-10-11 02:25:55,830 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:25:55,833 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c653497-f536-4acb-b3d4-7dba40bed3a9/sv-benchmarks/c/memsafety/test-0158-1.i [2021-10-11 02:25:55,854 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c653497-f536-4acb-b3d4-7dba40bed3a9/bin/utaipan-WLngWcDbfI/data/685f3e366/5f3ceb109a6d4db68505db6bea51de0c/FLAGf1c1b9658 [2021-10-11 02:25:56,099 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c653497-f536-4acb-b3d4-7dba40bed3a9/bin/utaipan-WLngWcDbfI/data/685f3e366/5f3ceb109a6d4db68505db6bea51de0c [2021-10-11 02:25:56,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:25:56,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:25:56,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:56,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:25:56,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:25:56,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:56" (1/1) ... [2021-10-11 02:25:56,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d44f6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56, skipping insertion in model container [2021-10-11 02:25:56,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:56" (1/1) ... [2021-10-11 02:25:56,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:25:56,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:25:56,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:56,599 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:25:56,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:56,749 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:25:56,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56 WrapperNode [2021-10-11 02:25:56,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:56,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:56,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:25:56,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:25:56,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2021-10-11 02:25:56,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2021-10-11 02:25:56,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:56,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:25:56,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:25:56,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:25:56,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2021-10-11 02:25:56,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2021-10-11 02:25:56,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2021-10-11 02:25:56,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2021-10-11 02:25:56,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2021-10-11 02:25:56,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2021-10-11 02:25:56,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... [2021-10-11 02:25:56,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:25:56,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:25:56,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:25:56,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:25:56,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c653497-f536-4acb-b3d4-7dba40bed3a9/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:25:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:25:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:25:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:25:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:25:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:25:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:25:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:25:56,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:25:57,484 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:25:57,484 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:25:57,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:57 BoogieIcfgContainer [2021-10-11 02:25:57,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:25:57,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:25:57,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:25:57,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:25:57,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:25:56" (1/3) ... [2021-10-11 02:25:57,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a602ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:57, skipping insertion in model container [2021-10-11 02:25:57,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:56" (2/3) ... [2021-10-11 02:25:57,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a602ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:57, skipping insertion in model container [2021-10-11 02:25:57,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:57" (3/3) ... [2021-10-11 02:25:57,515 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-1.i [2021-10-11 02:25:57,533 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:25:57,537 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2021-10-11 02:25:57,548 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-11 02:25:57,586 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:25:57,586 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:25:57,586 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:25:57,587 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:25:57,587 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:25:57,587 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:25:57,587 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:25:57,587 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:25:57,605 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-10-11 02:25:57,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-11 02:25:57,613 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:57,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2021-10-11 02:25:57,614 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:25:57,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:57,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1647, now seen corresponding path program 1 times [2021-10-11 02:25:57,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:57,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785972568] [2021-10-11 02:25:57,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:57,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785972568] [2021-10-11 02:25:57,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:57,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:25:57,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888236126] [2021-10-11 02:25:57,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:57,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:57,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:57,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:57,890 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2021-10-11 02:25:57,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:57,959 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-10-11 02:25:57,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:57,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2021-10-11 02:25:57,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:57,972 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:25:57,973 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 02:25:57,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:58,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 02:25:58,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-11 02:25:58,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:25:58,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-10-11 02:25:58,014 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 2 [2021-10-11 02:25:58,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:58,015 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-10-11 02:25:58,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:58,015 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-10-11 02:25:58,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-11 02:25:58,015 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:58,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2021-10-11 02:25:58,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:25:58,016 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:25:58,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:58,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1648, now seen corresponding path program 1 times [2021-10-11 02:25:58,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:58,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837015925] [2021-10-11 02:25:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:58,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837015925] [2021-10-11 02:25:58,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:58,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:25:58,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93124504] [2021-10-11 02:25:58,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:58,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:58,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:58,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:58,082 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 3 states. [2021-10-11 02:25:58,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:58,104 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-10-11 02:25:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:58,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2021-10-11 02:25:58,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:58,105 INFO L225 Difference]: With dead ends: 12 [2021-10-11 02:25:58,105 INFO L226 Difference]: Without dead ends: 12 [2021-10-11 02:25:58,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:58,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-11 02:25:58,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-11 02:25:58,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 02:25:58,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-10-11 02:25:58,110 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 2 [2021-10-11 02:25:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:58,111 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-10-11 02:25:58,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:58,112 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-10-11 02:25:58,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:25:58,113 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:58,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:25:58,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:25:58,113 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:25:58,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:58,115 INFO L82 PathProgramCache]: Analyzing trace with hash 49042043, now seen corresponding path program 1 times [2021-10-11 02:25:58,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:58,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418349247] [2021-10-11 02:25:58,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:58,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:58,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418349247] [2021-10-11 02:25:58,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:58,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:58,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783730004] [2021-10-11 02:25:58,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:25:58,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:58,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:25:58,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:58,234 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 5 states. [2021-10-11 02:25:58,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:58,278 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-10-11 02:25:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:25:58,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2021-10-11 02:25:58,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:58,280 INFO L225 Difference]: With dead ends: 11 [2021-10-11 02:25:58,280 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 02:25:58,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:58,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 02:25:58,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 02:25:58,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:25:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-11 02:25:58,284 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 5 [2021-10-11 02:25:58,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:58,284 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-11 02:25:58,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:25:58,284 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-11 02:25:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:25:58,285 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:58,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:25:58,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:25:58,286 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:25:58,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:58,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1520303378, now seen corresponding path program 1 times [2021-10-11 02:25:58,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:58,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043114608] [2021-10-11 02:25:58,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:58,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043114608] [2021-10-11 02:25:58,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:58,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:58,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469543057] [2021-10-11 02:25:58,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:25:58,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:58,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:25:58,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:58,418 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 5 states. [2021-10-11 02:25:58,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:58,477 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2021-10-11 02:25:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:25:58,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2021-10-11 02:25:58,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:58,480 INFO L225 Difference]: With dead ends: 10 [2021-10-11 02:25:58,480 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:25:58,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:58,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:25:58,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:25:58,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:25:58,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2021-10-11 02:25:58,485 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 6 [2021-10-11 02:25:58,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:58,486 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2021-10-11 02:25:58,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:25:58,486 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2021-10-11 02:25:58,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:25:58,487 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:58,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:58,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:25:58,488 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:25:58,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:58,489 INFO L82 PathProgramCache]: Analyzing trace with hash -115235491, now seen corresponding path program 1 times [2021-10-11 02:25:58,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:58,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318324073] [2021-10-11 02:25:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:58,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318324073] [2021-10-11 02:25:58,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:58,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:58,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573891480] [2021-10-11 02:25:58,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:25:58,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:58,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:25:58,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:58,577 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand 5 states. [2021-10-11 02:25:58,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:58,615 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-10-11 02:25:58,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:25:58,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2021-10-11 02:25:58,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:58,616 INFO L225 Difference]: With dead ends: 9 [2021-10-11 02:25:58,616 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 02:25:58,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 02:25:58,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 02:25:58,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 02:25:58,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-11 02:25:58,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 7 [2021-10-11 02:25:58,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:58,619 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-11 02:25:58,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:25:58,619 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-11 02:25:58,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:25:58,620 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:58,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:58,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:25:58,621 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:25:58,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:58,621 INFO L82 PathProgramCache]: Analyzing trace with hash 722667125, now seen corresponding path program 1 times [2021-10-11 02:25:58,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:58,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833041701] [2021-10-11 02:25:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:58,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833041701] [2021-10-11 02:25:58,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:58,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:25:58,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145264999] [2021-10-11 02:25:58,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:25:58,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:58,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:25:58,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:25:58,807 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 6 states. [2021-10-11 02:25:58,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:58,924 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2021-10-11 02:25:58,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:25:58,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-10-11 02:25:58,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:58,925 INFO L225 Difference]: With dead ends: 8 [2021-10-11 02:25:58,925 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:25:58,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:25:58,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:25:58,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:25:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:25:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:25:58,934 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-11 02:25:58,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:58,935 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:25:58,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:25:58,935 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:25:58,935 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:25:58,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:25:58,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:25:58 BoogieIcfgContainer [2021-10-11 02:25:58,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:25:58,942 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:25:58,942 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:25:58,942 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:25:58,943 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:57" (3/4) ... [2021-10-11 02:25:58,946 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:25:58,958 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-11 02:25:58,958 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:25:58,959 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:25:58,959 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:25:59,007 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c653497-f536-4acb-b3d4-7dba40bed3a9/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:25:59,007 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:25:59,010 INFO L168 Benchmark]: Toolchain (without parser) took 2903.62 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 67.7 MB in the beginning and 86.6 MB in the end (delta: -18.9 MB). Peak memory consumption was 404.3 kB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,010 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 98.6 MB. Free memory was 56.9 MB in the beginning and 56.8 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:59,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.07 ms. Allocated memory is still 98.6 MB. Free memory was 67.4 MB in the beginning and 64.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,011 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.20 ms. Allocated memory is still 98.6 MB. Free memory was 64.3 MB in the beginning and 62.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,012 INFO L168 Benchmark]: Boogie Preprocessor took 66.11 ms. Allocated memory is still 98.6 MB. Free memory was 62.7 MB in the beginning and 61.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,012 INFO L168 Benchmark]: RCFGBuilder took 608.48 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 61.3 MB in the beginning and 95.3 MB in the end (delta: -33.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,013 INFO L168 Benchmark]: TraceAbstraction took 1452.53 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 88.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,013 INFO L168 Benchmark]: Witness Printer took 65.65 ms. Allocated memory is still 119.5 MB. Free memory was 88.7 MB in the beginning and 86.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:59,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 98.6 MB. Free memory was 56.9 MB in the beginning and 56.8 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 642.07 ms. Allocated memory is still 98.6 MB. Free memory was 67.4 MB in the beginning and 64.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.20 ms. Allocated memory is still 98.6 MB. Free memory was 64.3 MB in the beginning and 62.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.11 ms. Allocated memory is still 98.6 MB. Free memory was 62.7 MB in the beginning and 61.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 608.48 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 61.3 MB in the beginning and 95.3 MB in the end (delta: -33.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1452.53 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 88.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Witness Printer took 65.65 ms. Allocated memory is still 119.5 MB. Free memory was 88.7 MB in the beginning and 86.6 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: - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 61 SDslu, 6 SDs, 0 SdLazy, 71 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1897 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 correct! Received shutdown request...