./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.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_1e8577da-2356-4c1d-86b3-a314e583dd0c/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e8577da-2356-4c1d-86b3-a314e583dd0c/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_1e8577da-2356-4c1d-86b3-a314e583dd0c/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e8577da-2356-4c1d-86b3-a314e583dd0c/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e8577da-2356-4c1d-86b3-a314e583dd0c/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_1e8577da-2356-4c1d-86b3-a314e583dd0c/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 15362e3354379e86b7768de02eb760f50ed72879 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:33:16,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:33:16,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:33:16,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:33:16,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:33:16,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:33:16,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:33:16,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:33:16,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:33:16,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:33:16,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:33:16,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:33:16,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:33:16,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:33:16,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:33:16,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:33:16,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:33:16,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:33:16,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:33:16,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:33:16,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:33:16,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:33:16,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:33:16,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:33:16,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:33:16,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:33:16,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:33:16,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:33:16,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:33:16,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:33:16,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:33:16,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:33:16,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:33:16,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:33:16,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:33:16,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:33:16,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:33:16,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:33:16,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:33:16,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:33:16,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:33:16,775 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e8577da-2356-4c1d-86b3-a314e583dd0c/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:33:16,800 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:33:16,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:33:16,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:33:16,802 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:33:16,802 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:33:16,802 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:33:16,802 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:33:16,803 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:33:16,803 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:33:16,803 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:33:16,803 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:33:16,803 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:33:16,804 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:33:16,804 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:33:16,804 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:33:16,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:33:16,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:33:16,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:33:16,806 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:33:16,806 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:33:16,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:33:16,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:33:16,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:33:16,807 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:33:16,807 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:33:16,807 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:33:16,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:33:16,808 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:33:16,808 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:33:16,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:33:16,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:33:16,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:33:16,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:33:16,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:33:16,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:33:16,809 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:33:16,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:33:16,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:33:16,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:33:16,810 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_1e8577da-2356-4c1d-86b3-a314e583dd0c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e8577da-2356-4c1d-86b3-a314e583dd0c/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15362e3354379e86b7768de02eb760f50ed72879 [2021-10-11 02:33:17,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:33:17,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:33:17,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:33:17,116 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:33:17,117 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:33:17,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e8577da-2356-4c1d-86b3-a314e583dd0c/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2021-10-11 02:33:17,228 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e8577da-2356-4c1d-86b3-a314e583dd0c/bin/utaipan-WLngWcDbfI/data/a013bc089/1b2666eea3e14ff48dce38e688095b9c/FLAGb6832c31f [2021-10-11 02:33:17,718 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:33:17,719 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e8577da-2356-4c1d-86b3-a314e583dd0c/sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2021-10-11 02:33:17,746 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e8577da-2356-4c1d-86b3-a314e583dd0c/bin/utaipan-WLngWcDbfI/data/a013bc089/1b2666eea3e14ff48dce38e688095b9c/FLAGb6832c31f [2021-10-11 02:33:18,039 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e8577da-2356-4c1d-86b3-a314e583dd0c/bin/utaipan-WLngWcDbfI/data/a013bc089/1b2666eea3e14ff48dce38e688095b9c [2021-10-11 02:33:18,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:33:18,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:33:18,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:33:18,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:33:18,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:33:18,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:18" (1/1) ... [2021-10-11 02:33:18,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576f3e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:18, skipping insertion in model container [2021-10-11 02:33:18,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:18" (1/1) ... [2021-10-11 02:33:18,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:33:18,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:33:18,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:18,554 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:33:18,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:18,669 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:33:18,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:18 WrapperNode [2021-10-11 02:33:18,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:33:18,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:33:18,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:33:18,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:33:18,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:18" (1/1) ... [2021-10-11 02:33:18,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:18" (1/1) ... [2021-10-11 02:33:18,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:33:18,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:33:18,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:33:18,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:33:18,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:18" (1/1) ... [2021-10-11 02:33:18,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:18" (1/1) ... [2021-10-11 02:33:18,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:18" (1/1) ... [2021-10-11 02:33:18,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:18" (1/1) ... [2021-10-11 02:33:18,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:18" (1/1) ... [2021-10-11 02:33:18,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:18" (1/1) ... [2021-10-11 02:33:18,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:18" (1/1) ... [2021-10-11 02:33:18,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:33:18,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:33:18,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:33:18,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:33:18,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:18" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e8577da-2356-4c1d-86b3-a314e583dd0c/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 02:33:18,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:33:18,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:33:18,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:33:18,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:33:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:33:18,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:33:19,369 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:33:19,371 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:33:19,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:19 BoogieIcfgContainer [2021-10-11 02:33:19,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:33:19,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:33:19,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:33:19,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:33:19,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:33:18" (1/3) ... [2021-10-11 02:33:19,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c77159c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:19, skipping insertion in model container [2021-10-11 02:33:19,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:18" (2/3) ... [2021-10-11 02:33:19,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c77159c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:19, skipping insertion in model container [2021-10-11 02:33:19,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:19" (3/3) ... [2021-10-11 02:33:19,391 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrlen_unsafe.i [2021-10-11 02:33:19,410 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:33:19,414 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2021-10-11 02:33:19,424 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-11 02:33:19,445 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:33:19,445 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:33:19,445 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:33:19,446 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:33:19,446 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:33:19,446 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:33:19,446 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:33:19,446 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:33:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2021-10-11 02:33:19,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:33:19,465 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:19,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:33:19,467 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 02:33:19,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:19,472 INFO L82 PathProgramCache]: Analyzing trace with hash 97607, now seen corresponding path program 1 times [2021-10-11 02:33:19,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:19,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472906925] [2021-10-11 02:33:19,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:19,636 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 02:33:19,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472906925] [2021-10-11 02:33:19,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:19,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:33:19,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127010678] [2021-10-11 02:33:19,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:19,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:19,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:19,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:19,658 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2021-10-11 02:33:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:19,693 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-10-11 02:33:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:19,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 02:33:19,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:19,702 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:33:19,702 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 02:33:19,704 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 02:33:19,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 02:33:19,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-11 02:33:19,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:33:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-10-11 02:33:19,733 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 3 [2021-10-11 02:33:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:19,733 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-11 02:33:19,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-10-11 02:33:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:33:19,734 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:19,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:33:19,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:33:19,735 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 02:33:19,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:19,736 INFO L82 PathProgramCache]: Analyzing trace with hash 97608, now seen corresponding path program 1 times [2021-10-11 02:33:19,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:19,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177963216] [2021-10-11 02:33:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:19,805 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 02:33:19,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177963216] [2021-10-11 02:33:19,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:19,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:19,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521330870] [2021-10-11 02:33:19,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:33:19,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:19,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:33:19,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:19,809 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 4 states. [2021-10-11 02:33:19,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:19,922 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-10-11 02:33:19,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:19,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2021-10-11 02:33:19,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:19,925 INFO L225 Difference]: With dead ends: 36 [2021-10-11 02:33:19,925 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 02:33:19,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:33:19,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 02:33:19,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 21. [2021-10-11 02:33:19,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:33:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-10-11 02:33:19,935 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 3 [2021-10-11 02:33:19,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:19,936 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-10-11 02:33:19,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:33:19,937 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-10-11 02:33:19,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:33:19,937 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:19,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:33:19,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:33:19,938 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 02:33:19,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:19,940 INFO L82 PathProgramCache]: Analyzing trace with hash 99291, now seen corresponding path program 1 times [2021-10-11 02:33:19,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:19,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217522582] [2021-10-11 02:33:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:20,017 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 02:33:20,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217522582] [2021-10-11 02:33:20,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:20,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:33:20,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746103490] [2021-10-11 02:33:20,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:20,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:20,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:20,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:20,035 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 3 states. [2021-10-11 02:33:20,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:20,056 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-10-11 02:33:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:20,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 02:33:20,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:20,059 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:33:20,059 INFO L226 Difference]: Without dead ends: 20 [2021-10-11 02:33:20,059 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 02:33:20,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-11 02:33:20,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-11 02:33:20,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-11 02:33:20,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-11 02:33:20,066 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 3 [2021-10-11 02:33:20,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:20,067 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-11 02:33:20,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:20,067 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-10-11 02:33:20,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:33:20,068 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:20,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:33:20,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:33:20,069 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 02:33:20,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:20,070 INFO L82 PathProgramCache]: Analyzing trace with hash 3079237, now seen corresponding path program 1 times [2021-10-11 02:33:20,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:20,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397837564] [2021-10-11 02:33:20,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:20,101 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 02:33:20,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397837564] [2021-10-11 02:33:20,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:20,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:20,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320583092] [2021-10-11 02:33:20,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:20,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:20,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:20,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:20,103 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2021-10-11 02:33:20,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:20,123 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-10-11 02:33:20,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:20,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:33:20,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:20,124 INFO L225 Difference]: With dead ends: 19 [2021-10-11 02:33:20,124 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 02:33:20,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:33:20,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 02:33:20,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-11 02:33:20,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:33:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-11 02:33:20,128 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 4 [2021-10-11 02:33:20,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:20,128 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-11 02:33:20,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:20,128 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-10-11 02:33:20,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:33:20,129 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:20,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:33:20,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:33:20,129 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 02:33:20,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:20,130 INFO L82 PathProgramCache]: Analyzing trace with hash 3079238, now seen corresponding path program 1 times [2021-10-11 02:33:20,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:20,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404599971] [2021-10-11 02:33:20,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:20,233 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 02:33:20,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404599971] [2021-10-11 02:33:20,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:20,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:20,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637986305] [2021-10-11 02:33:20,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:33:20,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:20,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:33:20,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:33:20,237 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2021-10-11 02:33:20,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:20,381 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2021-10-11 02:33:20,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:33:20,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2021-10-11 02:33:20,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:20,383 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:33:20,383 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 02:33:20,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 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 02:33:20,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 02:33:20,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 21. [2021-10-11 02:33:20,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:33:20,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-10-11 02:33:20,388 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 4 [2021-10-11 02:33:20,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:20,388 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-10-11 02:33:20,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:33:20,388 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-10-11 02:33:20,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:33:20,389 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:20,389 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-11 02:33:20,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:33:20,390 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 02:33:20,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:20,390 INFO L82 PathProgramCache]: Analyzing trace with hash 93846041, now seen corresponding path program 1 times [2021-10-11 02:33:20,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:20,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018636596] [2021-10-11 02:33:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:20,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018636596] [2021-10-11 02:33:20,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170834213] [2021-10-11 02:33:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e8577da-2356-4c1d-86b3-a314e583dd0c/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:20,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:33:20,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:20,597 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-11 02:33:20,602 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:20,610 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:20,611 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:33:20,612 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-10-11 02:33:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:20,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:33:20,752 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:20,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [617454969] [2021-10-11 02:33:20,853 INFO L159 IcfgInterpreter]: Started Sifa with 4 locations of interest [2021-10-11 02:33:20,853 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:33:20,859 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:33:20,865 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:33:20,865 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:33:21,316 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:33:21,679 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2021-10-11 02:33:21,772 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:33:21,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:33:21,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2021-10-11 02:33:21,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673156729] [2021-10-11 02:33:21,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:33:21,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:21,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:33:21,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:33:21,776 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 9 states. [2021-10-11 02:33:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:21,978 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-10-11 02:33:21,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:33:21,979 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 5 [2021-10-11 02:33:21,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:21,985 INFO L225 Difference]: With dead ends: 46 [2021-10-11 02:33:21,985 INFO L226 Difference]: Without dead ends: 46 [2021-10-11 02:33:21,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:33:21,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-11 02:33:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 19. [2021-10-11 02:33:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:33:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-11 02:33:21,997 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 5 [2021-10-11 02:33:21,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:21,997 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-11 02:33:21,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:33:21,997 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-10-11 02:33:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:33:21,998 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:21,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:33:22,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-11 02:33:22,213 INFO L429 AbstractCegarLoop]: === Iteration 7 === [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 02:33:22,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:22,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1385686635, now seen corresponding path program 1 times [2021-10-11 02:33:22,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:22,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686656914] [2021-10-11 02:33:22,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:22,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686656914] [2021-10-11 02:33:22,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816291757] [2021-10-11 02:33:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e8577da-2356-4c1d-86b3-a314e583dd0c/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:22,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-11 02:33:22,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:22,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:22,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:33:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:22,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [837100099] [2021-10-11 02:33:22,558 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:33:22,558 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:33:22,559 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:33:22,559 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:33:22,559 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:33:23,148 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:33:23,161 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:33:23,211 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:33:23,445 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2021-10-11 02:33:23,788 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2021-10-11 02:33:24,322 WARN L197 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2021-10-11 02:33:24,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:33:24,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 3, 3] total 13 [2021-10-11 02:33:24,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961099381] [2021-10-11 02:33:24,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:33:24,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:24,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:33:24,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:33:24,331 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2021-10-11 02:33:24,565 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2021-10-11 02:33:24,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:24,667 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-10-11 02:33:24,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:33:24,667 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2021-10-11 02:33:24,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:24,668 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:33:24,668 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 02:33:24,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:33:24,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 02:33:24,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2021-10-11 02:33:24,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 02:33:24,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-10-11 02:33:24,672 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 6 [2021-10-11 02:33:24,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:24,672 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-10-11 02:33:24,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:33:24,672 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-10-11 02:33:24,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:33:24,672 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:24,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:33:24,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-11 02:33:24,880 INFO L429 AbstractCegarLoop]: === Iteration 8 === [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 02:33:24,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:24,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1335820097, now seen corresponding path program 1 times [2021-10-11 02:33:24,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:24,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838202743] [2021-10-11 02:33:24,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:24,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838202743] [2021-10-11 02:33:24,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:24,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:33:24,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411571271] [2021-10-11 02:33:24,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:33:24,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:24,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:33:24,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:33:24,988 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2021-10-11 02:33:25,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:25,139 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-10-11 02:33:25,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:33:25,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2021-10-11 02:33:25,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:25,141 INFO L225 Difference]: With dead ends: 34 [2021-10-11 02:33:25,141 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 02:33:25,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:33:25,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 02:33:25,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2021-10-11 02:33:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:33:25,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-10-11 02:33:25,145 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 6 [2021-10-11 02:33:25,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:25,145 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-10-11 02:33:25,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:33:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-10-11 02:33:25,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:33:25,146 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:25,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:25,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-10-11 02:33:25,146 INFO L429 AbstractCegarLoop]: === Iteration 9 === [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 02:33:25,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:25,147 INFO L82 PathProgramCache]: Analyzing trace with hash -204994994, now seen corresponding path program 1 times [2021-10-11 02:33:25,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:25,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647429229] [2021-10-11 02:33:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:33:25,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:33:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:33:25,210 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:33:25,229 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:33:25,229 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:33:25,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-10-11 02:33:25,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:33:25 BoogieIcfgContainer [2021-10-11 02:33:25,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:33:25,257 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:33:25,257 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:33:25,257 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:33:25,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:19" (3/4) ... [2021-10-11 02:33:25,260 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:33:25,301 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e8577da-2356-4c1d-86b3-a314e583dd0c/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:33:25,301 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:33:25,302 INFO L168 Benchmark]: Toolchain (without parser) took 7258.02 ms. Allocated memory was 96.5 MB in the beginning and 178.3 MB in the end (delta: 81.8 MB). Free memory was 62.8 MB in the beginning and 83.8 MB in the end (delta: -21.0 MB). Peak memory consumption was 61.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:25,303 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:25,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 626.31 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 62.6 MB in the beginning and 94.6 MB in the end (delta: -31.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:25,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.72 ms. Allocated memory is still 130.0 MB. Free memory was 94.6 MB in the beginning and 92.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:25,304 INFO L168 Benchmark]: Boogie Preprocessor took 51.85 ms. Allocated memory is still 130.0 MB. Free memory was 92.6 MB in the beginning and 91.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:25,305 INFO L168 Benchmark]: RCFGBuilder took 576.48 ms. Allocated memory is still 130.0 MB. Free memory was 91.2 MB in the beginning and 67.9 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:25,306 INFO L168 Benchmark]: TraceAbstraction took 5873.06 ms. Allocated memory was 130.0 MB in the beginning and 178.3 MB in the end (delta: 48.2 MB). Free memory was 67.4 MB in the beginning and 85.9 MB in the end (delta: -18.4 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:25,306 INFO L168 Benchmark]: Witness Printer took 44.57 ms. Allocated memory is still 178.3 MB. Free memory was 85.9 MB in the beginning and 83.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:25,309 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 96.5 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 626.31 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 62.6 MB in the beginning and 94.6 MB in the end (delta: -31.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.72 ms. Allocated memory is still 130.0 MB. Free memory was 94.6 MB in the beginning and 92.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.85 ms. Allocated memory is still 130.0 MB. Free memory was 92.6 MB in the beginning and 91.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 576.48 ms. Allocated memory is still 130.0 MB. Free memory was 91.2 MB in the beginning and 67.9 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5873.06 ms. Allocated memory was 130.0 MB in the beginning and 178.3 MB in the end (delta: 48.2 MB). Free memory was 67.4 MB in the beginning and 85.9 MB in the end (delta: -18.4 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. * Witness Printer took 44.57 ms. Allocated memory is still 178.3 MB. Free memory was 85.9 MB in the beginning and 83.8 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: 532]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int length = __VERIFIER_nondet_int(); [L516] COND FALSE !(length < 1) [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; [L521] COND TRUE i < length - 1 [L523] nondetString[i] = __VERIFIER_nondet_char() [L521] i++ [L521] COND FALSE !(i < length - 1) [L526] nondetString[length-1] = '\0' [L527] return nondetString; [L537] char* p = build_nondet_String(); [L531] const char *p = s; [L532] EXPR \read(*p) [L532] COND TRUE *p != '\0' [L533] p = p+2 [L532] \read(*p) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.7s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 108 SDtfs, 257 SDslu, 161 SDs, 0 SdLazy, 211 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=8, 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, 8 MinimizatonAttempts, 66 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1828 SizeOfPredicates, 19 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 2/10 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: OVERALL_TIME[ms]: 654, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 6, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 12, TOOLS_POST_TIME[ms]: 466, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 12, TOOLS_QUANTIFIERELIM_TIME[ms]: 456, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 129, FLUID_QUERY_TIME[ms]: 1, FLUID_QUERIES: 26, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME[ms]: 53, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 99, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 8, DOMAIN_ISBOTTOM_APPLICATIONS: 6, DOMAIN_ISBOTTOM_TIME[ms]: 19, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 305, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 305, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 0, PATH_EXPR_TIME[ms]: 0, REGEX_TO_DAG_TIME[ms]: 0, DAG_COMPRESSION_TIME[ms]: 3, DAG_COMPRESSION_PROCESSED_NODES: 51, DAG_COMPRESSION_RETAINED_NODES: 20, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...