./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/realloc1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/realloc1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan --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 937cfa07aecfb3a07a3e6e685c2e5e481fbe44b8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-f470102 [2019-12-07 13:05:13,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:05:13,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:05:13,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:05:13,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:05:13,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:05:13,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:05:13,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:05:13,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:05:13,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:05:13,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:05:13,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:05:13,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:05:13,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:05:13,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:05:13,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:05:13,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:05:13,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:05:13,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:05:13,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:05:13,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:05:13,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:05:13,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:05:13,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:05:13,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:05:13,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:05:13,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:05:13,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:05:13,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:05:13,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:05:13,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:05:13,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:05:13,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:05:13,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:05:13,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:05:13,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:05:13,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:05:13,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:05:13,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:05:13,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:05:13,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:05:13,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 13:05:13,962 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:05:13,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:05:13,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 13:05:13,963 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 13:05:13,963 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 13:05:13,963 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 13:05:13,963 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 13:05:13,963 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 13:05:13,964 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 13:05:13,964 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 13:05:13,964 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 13:05:13,964 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 13:05:13,964 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 13:05:13,964 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 13:05:13,964 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 13:05:13,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:05:13,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:05:13,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:05:13,965 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:05:13,965 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 13:05:13,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:05:13,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:05:13,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:05:13,966 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 13:05:13,966 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 13:05:13,966 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 13:05:13,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:05:13,966 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 13:05:13,966 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:05:13,966 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:05:13,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:05:13,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:05:13,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:05:13,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:05:13,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:05:13,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:05:13,967 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 13:05:13,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:05:13,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:05:13,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 13:05:13,968 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan 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 -> 937cfa07aecfb3a07a3e6e685c2e5e481fbe44b8 [2019-12-07 13:05:14,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:05:14,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:05:14,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:05:14,079 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:05:14,079 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:05:14,079 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/../../sv-benchmarks/c/memsafety-ext3/realloc1.c [2019-12-07 13:05:14,117 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/data/bc43ad94e/95ee760b6ad94a478c57e68d4f6a6951/FLAG93e882999 [2019-12-07 13:05:14,544 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:05:14,544 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/sv-benchmarks/c/memsafety-ext3/realloc1.c [2019-12-07 13:05:14,548 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/data/bc43ad94e/95ee760b6ad94a478c57e68d4f6a6951/FLAG93e882999 [2019-12-07 13:05:14,556 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/data/bc43ad94e/95ee760b6ad94a478c57e68d4f6a6951 [2019-12-07 13:05:14,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:05:14,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:05:14,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:05:14,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:05:14,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:05:14,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:05:14" (1/1) ... [2019-12-07 13:05:14,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3272d5f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:14, skipping insertion in model container [2019-12-07 13:05:14,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:05:14" (1/1) ... [2019-12-07 13:05:14,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:05:14,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:05:14,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:05:14,732 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:05:14,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:05:14,752 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:05:14,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:14 WrapperNode [2019-12-07 13:05:14,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:05:14,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:05:14,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:05:14,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:05:14,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:14" (1/1) ... [2019-12-07 13:05:14,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:14" (1/1) ... [2019-12-07 13:05:14,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:05:14,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:05:14,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:05:14,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:05:14,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:14" (1/1) ... [2019-12-07 13:05:14,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:14" (1/1) ... [2019-12-07 13:05:14,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:14" (1/1) ... [2019-12-07 13:05:14,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:14" (1/1) ... [2019-12-07 13:05:14,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:14" (1/1) ... [2019-12-07 13:05:14,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:14" (1/1) ... [2019-12-07 13:05:14,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:14" (1/1) ... [2019-12-07 13:05:14,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:05:14,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:05:14,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:05:14,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:05:14,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/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 [2019-12-07 13:05:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 13:05:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 13:05:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:05:14,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:05:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 13:05:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:05:15,075 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:05:15,075 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 13:05:15,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:05:15 BoogieIcfgContainer [2019-12-07 13:05:15,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:05:15,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:05:15,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:05:15,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:05:15,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:05:14" (1/3) ... [2019-12-07 13:05:15,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae86d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:05:15, skipping insertion in model container [2019-12-07 13:05:15,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:05:14" (2/3) ... [2019-12-07 13:05:15,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae86d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:05:15, skipping insertion in model container [2019-12-07 13:05:15,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:05:15" (3/3) ... [2019-12-07 13:05:15,083 INFO L109 eAbstractionObserver]: Analyzing ICFG realloc1.c [2019-12-07 13:05:15,091 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:05:15,098 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-12-07 13:05:15,105 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-12-07 13:05:15,117 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:05:15,117 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 13:05:15,118 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:05:15,118 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:05:15,118 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:05:15,118 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:05:15,118 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:05:15,118 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:05:15,127 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-12-07 13:05:15,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 13:05:15,131 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:05:15,132 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 13:05:15,132 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 13:05:15,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:05:15,136 INFO L82 PathProgramCache]: Analyzing trace with hash 76559, now seen corresponding path program 1 times [2019-12-07 13:05:15,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:05:15,142 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164805942] [2019-12-07 13:05:15,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:05:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:05:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:15,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164805942] [2019-12-07 13:05:15,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:05:15,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:05:15,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702487126] [2019-12-07 13:05:15,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:05:15,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:05:15,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:05:15,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:05:15,252 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-12-07 13:05:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:05:15,271 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2019-12-07 13:05:15,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:05:15,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 13:05:15,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:05:15,278 INFO L225 Difference]: With dead ends: 21 [2019-12-07 13:05:15,279 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 13:05:15,280 INFO L630 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 [2019-12-07 13:05:15,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 13:05:15,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2019-12-07 13:05:15,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 13:05:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-12-07 13:05:15,301 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 3 [2019-12-07 13:05:15,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:05:15,301 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-12-07 13:05:15,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:05:15,302 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-12-07 13:05:15,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 13:05:15,302 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:05:15,302 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 13:05:15,302 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 13:05:15,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:05:15,303 INFO L82 PathProgramCache]: Analyzing trace with hash 75280, now seen corresponding path program 1 times [2019-12-07 13:05:15,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:05:15,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759307918] [2019-12-07 13:05:15,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:05:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:05:15,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:15,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759307918] [2019-12-07 13:05:15,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:05:15,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 13:05:15,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039015783] [2019-12-07 13:05:15,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:05:15,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:05:15,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:05:15,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:05:15,326 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2019-12-07 13:05:15,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:05:15,341 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-12-07 13:05:15,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:05:15,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 13:05:15,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:05:15,342 INFO L225 Difference]: With dead ends: 15 [2019-12-07 13:05:15,342 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 13:05:15,342 INFO L630 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 [2019-12-07 13:05:15,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 13:05:15,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 13:05:15,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 13:05:15,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-12-07 13:05:15,344 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 3 [2019-12-07 13:05:15,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:05:15,345 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-12-07 13:05:15,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:05:15,345 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-12-07 13:05:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 13:05:15,345 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:05:15,345 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 13:05:15,345 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 13:05:15,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:05:15,345 INFO L82 PathProgramCache]: Analyzing trace with hash 75281, now seen corresponding path program 1 times [2019-12-07 13:05:15,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:05:15,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265384647] [2019-12-07 13:05:15,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:05:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:05:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:15,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265384647] [2019-12-07 13:05:15,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:05:15,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 13:05:15,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505190095] [2019-12-07 13:05:15,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:05:15,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:05:15,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:05:15,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:05:15,374 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2019-12-07 13:05:15,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:05:15,392 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-12-07 13:05:15,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:05:15,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 13:05:15,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:05:15,393 INFO L225 Difference]: With dead ends: 16 [2019-12-07 13:05:15,393 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 13:05:15,394 INFO L630 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 [2019-12-07 13:05:15,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 13:05:15,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 13:05:15,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 13:05:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-12-07 13:05:15,396 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2019-12-07 13:05:15,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:05:15,396 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-12-07 13:05:15,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:05:15,396 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-12-07 13:05:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 13:05:15,397 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:05:15,397 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 13:05:15,397 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 13:05:15,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:05:15,397 INFO L82 PathProgramCache]: Analyzing trace with hash 72381238, now seen corresponding path program 1 times [2019-12-07 13:05:15,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:05:15,397 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367361508] [2019-12-07 13:05:15,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:05:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:05:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:15,416 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367361508] [2019-12-07 13:05:15,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786480342] [2019-12-07 13:05:15,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/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 [2019-12-07 13:05:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:05:15,443 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 13:05:15,446 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:05:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:15,457 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:05:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:15,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2045433556] [2019-12-07 13:05:15,484 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-12-07 13:05:15,484 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 13:05:15,488 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 13:05:15,492 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 13:05:15,492 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 13:05:15,719 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 13:05:15,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-12-07 13:05:15,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3, 3] total 8 [2019-12-07 13:05:15,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996141723] [2019-12-07 13:05:15,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:05:15,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:05:15,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:05:15,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-12-07 13:05:15,835 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2019-12-07 13:05:15,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:05:15,864 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-12-07 13:05:15,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:05:15,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-12-07 13:05:15,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:05:15,865 INFO L225 Difference]: With dead ends: 15 [2019-12-07 13:05:15,865 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 13:05:15,866 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-12-07 13:05:15,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 13:05:15,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 13:05:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 13:05:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-12-07 13:05:15,868 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2019-12-07 13:05:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:05:15,868 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-12-07 13:05:15,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:05:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-12-07 13:05:15,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 13:05:15,869 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:05:15,869 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2019-12-07 13:05:16,069 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:05:16,070 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 13:05:16,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:05:16,070 INFO L82 PathProgramCache]: Analyzing trace with hash 72379960, now seen corresponding path program 1 times [2019-12-07 13:05:16,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:05:16,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829425109] [2019-12-07 13:05:16,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:05:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:05:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:16,110 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829425109] [2019-12-07 13:05:16,110 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239234877] [2019-12-07 13:05:16,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/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 [2019-12-07 13:05:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:05:16,132 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 13:05:16,132 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:05:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:16,176 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:05:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:16,209 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1057617435] [2019-12-07 13:05:16,209 INFO L159 IcfgInterpreter]: Started Sifa with 4 locations of interest [2019-12-07 13:05:16,210 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 13:05:16,210 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 13:05:16,210 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 13:05:16,210 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 13:05:16,345 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 13:05:16,507 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 13:05:16,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 13:05:16,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 3] total 8 [2019-12-07 13:05:16,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091024900] [2019-12-07 13:05:16,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 13:05:16,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:05:16,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 13:05:16,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-12-07 13:05:16,509 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 10 states. [2019-12-07 13:05:16,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:05:16,625 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-12-07 13:05:16,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 13:05:16,626 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 5 [2019-12-07 13:05:16,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:05:16,626 INFO L225 Difference]: With dead ends: 16 [2019-12-07 13:05:16,626 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 13:05:16,627 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-12-07 13:05:16,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 13:05:16,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 13:05:16,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 13:05:16,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-12-07 13:05:16,629 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 5 [2019-12-07 13:05:16,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:05:16,630 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-12-07 13:05:16,630 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 13:05:16,630 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-12-07 13:05:16,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:05:16,630 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:05:16,630 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1] [2019-12-07 13:05:16,830 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:05:16,831 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 13:05:16,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:05:16,832 INFO L82 PathProgramCache]: Analyzing trace with hash -2140791183, now seen corresponding path program 1 times [2019-12-07 13:05:16,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:05:16,833 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962765568] [2019-12-07 13:05:16,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:05:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:05:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:16,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962765568] [2019-12-07 13:05:16,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140798485] [2019-12-07 13:05:16,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:05:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:05:16,993 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 13:05:16,994 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:05:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:16,997 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:05:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:17,027 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2046845993] [2019-12-07 13:05:17,029 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2019-12-07 13:05:17,029 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 13:05:17,029 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 13:05:17,029 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 13:05:17,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 13:05:17,138 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 13:05:17,274 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 13:05:17,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 13:05:17,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2019-12-07 13:05:17,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119675234] [2019-12-07 13:05:17,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 13:05:17,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:05:17,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 13:05:17,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-12-07 13:05:17,275 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 10 states. [2019-12-07 13:05:17,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:05:17,296 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-12-07 13:05:17,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 13:05:17,296 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2019-12-07 13:05:17,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:05:17,297 INFO L225 Difference]: With dead ends: 26 [2019-12-07 13:05:17,297 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 13:05:17,297 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-12-07 13:05:17,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 13:05:17,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 13:05:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 13:05:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-12-07 13:05:17,300 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 10 [2019-12-07 13:05:17,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:05:17,300 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-12-07 13:05:17,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 13:05:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-12-07 13:05:17,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 13:05:17,301 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:05:17,301 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1] [2019-12-07 13:05:17,502 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:05:17,502 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 13:05:17,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:05:17,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1130791474, now seen corresponding path program 2 times [2019-12-07 13:05:17,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:05:17,504 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421318709] [2019-12-07 13:05:17,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:05:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:05:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:17,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421318709] [2019-12-07 13:05:17,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295304204] [2019-12-07 13:05:17,690 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:05:17,716 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-12-07 13:05:17,716 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:05:17,717 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 13:05:17,718 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:05:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-12-07 13:05:17,728 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:05:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-12-07 13:05:17,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-12-07 13:05:17,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [10] total 11 [2019-12-07 13:05:17,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003166679] [2019-12-07 13:05:17,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:05:17,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:05:17,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:05:17,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2019-12-07 13:05:17,738 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 3 states. [2019-12-07 13:05:17,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:05:17,746 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-12-07 13:05:17,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:05:17,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-12-07 13:05:17,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:05:17,747 INFO L225 Difference]: With dead ends: 25 [2019-12-07 13:05:17,747 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 13:05:17,748 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2019-12-07 13:05:17,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 13:05:17,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 13:05:17,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 13:05:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-12-07 13:05:17,750 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 20 [2019-12-07 13:05:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:05:17,750 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-12-07 13:05:17,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:05:17,750 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-12-07 13:05:17,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 13:05:17,751 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:05:17,751 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1] [2019-12-07 13:05:17,951 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:05:17,952 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 13:05:17,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:05:17,953 INFO L82 PathProgramCache]: Analyzing trace with hash -63878863, now seen corresponding path program 1 times [2019-12-07 13:05:17,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:05:17,954 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176242075] [2019-12-07 13:05:17,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:05:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:05:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:18,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176242075] [2019-12-07 13:05:18,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523228506] [2019-12-07 13:05:18,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:05:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:05:18,293 INFO L264 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 13:05:18,294 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:05:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:18,299 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:05:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:05:18,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1429313557] [2019-12-07 13:05:18,355 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-12-07 13:05:18,355 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 13:05:18,356 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 13:05:18,356 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 13:05:18,356 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 13:05:18,471 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 13:05:18,653 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 13:05:18,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 13:05:18,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 11 [2019-12-07 13:05:18,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989828143] [2019-12-07 13:05:18,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 13:05:18,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:05:18,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 13:05:18,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2019-12-07 13:05:18,655 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 12 states. [2019-12-07 13:05:18,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:05:18,679 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-12-07 13:05:18,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 13:05:18,679 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2019-12-07 13:05:18,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:05:18,680 INFO L225 Difference]: With dead ends: 29 [2019-12-07 13:05:18,680 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 13:05:18,680 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 10 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2019-12-07 13:05:18,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 13:05:18,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 13:05:18,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 13:05:18,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-12-07 13:05:18,682 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 22 [2019-12-07 13:05:18,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:05:18,682 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-12-07 13:05:18,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 13:05:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-12-07 13:05:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 13:05:18,683 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:05:18,683 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2019-12-07 13:05:18,883 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:05:18,885 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 13:05:18,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:05:18,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1688088605, now seen corresponding path program 2 times [2019-12-07 13:05:18,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:05:18,886 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202315011] [2019-12-07 13:05:18,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:05:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:05:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:05:19,010 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 13:05:19,010 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 13:05:19,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:05:19 BoogieIcfgContainer [2019-12-07 13:05:19,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:05:19,031 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:05:19,031 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:05:19,031 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:05:19,031 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:05:15" (3/4) ... [2019-12-07 13:05:19,033 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 13:05:19,064 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8bda9d64-a5c6-481f-93b4-20d44bab0c3a/bin/utaipan/witness.graphml [2019-12-07 13:05:19,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:05:19,065 INFO L168 Benchmark]: Toolchain (without parser) took 4506.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -159.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:05:19,066 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:05:19,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -149.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:05:19,066 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:05:19,066 INFO L168 Benchmark]: Boogie Preprocessor took 15.46 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:05:19,066 INFO L168 Benchmark]: RCFGBuilder took 285.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:05:19,067 INFO L168 Benchmark]: TraceAbstraction took 3953.23 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 41.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -45.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:05:19,067 INFO L168 Benchmark]: Witness Printer took 33.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:05:19,068 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 193.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -149.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.46 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 285.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3953.23 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 41.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -45.4 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 33.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L8] char* p = malloc(10 * sizeof(int)); [L10] int i = 0; [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND FALSE !(i < 10) [L14] free(p) [L14] free(p) [L14] free(p) [L16] p[2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 8 error locations. Result: UNSAFE, OverallTime: 3.8s, OverallIterations: 9, TraceHistogramMax: 10, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 84 SDslu, 108 SDs, 0 SdLazy, 150 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 194 GetRequests, 119 SyntacticMatches, 13 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 159 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 9647 SizeOfPredicates, 6 NumberOfNonLiveVariables, 261 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 18 InterpolantComputations, 5 PerfectInterpolantSequences, 129/420 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 235, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 3, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 10, TOOLS_POST_TIME[ms]: 132, 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: 10, TOOLS_QUANTIFIERELIM_TIME[ms]: 129, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 54, FLUID_QUERY_TIME[ms]: 2, FLUID_QUERIES: 23, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 66, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 5, DOMAIN_ISBOTTOM_APPLICATIONS: 3, DOMAIN_ISBOTTOM_TIME[ms]: 3, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 150, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 150, 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]: 2, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 5, DAG_COMPRESSION_PROCESSED_NODES: 26, DAG_COMPRESSION_RETAINED_NODES: 17, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...