./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-memsafety/fillarray.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/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 317acdded5b2f05710e753bf8fd3c2308f1aec62 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:21:09,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:21:09,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:21:09,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:21:09,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:21:09,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:21:09,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:21:09,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:21:09,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:21:09,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:21:09,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:21:09,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:21:09,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:21:09,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:21:09,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:21:09,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:21:09,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:21:09,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:21:09,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:21:09,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:21:09,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:21:09,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:21:09,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:21:09,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:21:09,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:21:09,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:21:09,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:21:09,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:21:09,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:21:09,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:21:09,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:21:09,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:21:09,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:21:09,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:21:09,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:21:09,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:21:09,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:21:09,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:21:09,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:21:09,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:21:09,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:21:09,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-11-26 02:21:09,835 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:21:09,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:21:09,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:21:09,837 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:21:09,837 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:21:09,837 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:21:09,837 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:21:09,837 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:21:09,838 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:21:09,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:21:09,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:21:09,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:21:09,839 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:21:09,839 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:21:09,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:21:09,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:21:09,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:21:09,840 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-26 02:21:09,840 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-26 02:21:09,840 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-26 02:21:09,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:21:09,841 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:21:09,841 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:21:09,841 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:21:09,842 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:21:09,842 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:21:09,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:21:09,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:21:09,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:21:09,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:21:09,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:21:09,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:21:09,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:21:09,844 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:21:09,844 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:21:09,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:21:09,844 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_9c1e7529-b5a9-4372-ac8f-c75fefb35580/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 -> 317acdded5b2f05710e753bf8fd3c2308f1aec62 [2019-11-26 02:21:09,979 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:21:09,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:21:09,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:21:09,993 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:21:09,993 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:21:09,994 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/../../sv-benchmarks/c/pthread-memsafety/fillarray.i [2019-11-26 02:21:10,044 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/data/f6b8cbcf2/6ea546b20aa64bc6b9dee42afe0a5819/FLAG2f8a69d6d [2019-11-26 02:21:10,471 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:21:10,471 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/sv-benchmarks/c/pthread-memsafety/fillarray.i [2019-11-26 02:21:10,493 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/data/f6b8cbcf2/6ea546b20aa64bc6b9dee42afe0a5819/FLAG2f8a69d6d [2019-11-26 02:21:10,505 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/data/f6b8cbcf2/6ea546b20aa64bc6b9dee42afe0a5819 [2019-11-26 02:21:10,508 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:21:10,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:21:10,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:21:10,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:21:10,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:21:10,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:21:10" (1/1) ... [2019-11-26 02:21:10,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a5b30c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:10, skipping insertion in model container [2019-11-26 02:21:10,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:21:10" (1/1) ... [2019-11-26 02:21:10,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:21:10,589 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:21:11,072 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:21:11,073 INFO L968 CHandler]: at location: C: (int *)arg [1041] [2019-11-26 02:21:11,073 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:21:11,082 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:21:11,083 INFO L968 CHandler]: at location: C: (int *)arg [1049] [2019-11-26 02:21:11,083 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:21:11,086 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:21:11,086 INFO L968 CHandler]: at location: C: (int *)malloc(size) [1061] [2019-11-26 02:21:11,087 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:21:11,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:21:11,101 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-26 02:21:11,108 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:21:11,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:21:11,143 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:21:11,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:21:11,327 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:21:11,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:11 WrapperNode [2019-11-26 02:21:11,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:21:11,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:21:11,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:21:11,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:21:11,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:11" (1/1) ... [2019-11-26 02:21:11,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:11" (1/1) ... [2019-11-26 02:21:11,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:21:11,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:21:11,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:21:11,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:21:11,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:11" (1/1) ... [2019-11-26 02:21:11,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:11" (1/1) ... [2019-11-26 02:21:11,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:11" (1/1) ... [2019-11-26 02:21:11,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:11" (1/1) ... [2019-11-26 02:21:11,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:11" (1/1) ... [2019-11-26 02:21:11,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:11" (1/1) ... [2019-11-26 02:21:11,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:11" (1/1) ... [2019-11-26 02:21:11,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:21:11,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:21:11,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:21:11,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:21:11,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/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 [2019-11-26 02:21:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-26 02:21:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-26 02:21:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-26 02:21:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-26 02:21:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:21:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:21:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:21:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:21:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:21:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:21:11,523 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:21:12,036 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:21:12,037 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:21:12,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:21:12 BoogieIcfgContainer [2019-11-26 02:21:12,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:21:12,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:21:12,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:21:12,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:21:12,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:21:10" (1/3) ... [2019-11-26 02:21:12,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9c13a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:21:12, skipping insertion in model container [2019-11-26 02:21:12,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:21:11" (2/3) ... [2019-11-26 02:21:12,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9c13a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:21:12, skipping insertion in model container [2019-11-26 02:21:12,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:21:12" (3/3) ... [2019-11-26 02:21:12,045 INFO L109 eAbstractionObserver]: Analyzing ICFG fillarray.i [2019-11-26 02:21:12,096 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,096 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,096 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,096 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,097 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,097 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,097 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,097 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,098 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,098 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,098 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,099 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,099 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,099 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,100 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,100 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,100 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,101 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,102 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,102 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,102 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,103 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,104 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,104 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,105 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,105 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,106 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,106 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,106 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,106 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,107 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,110 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,110 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,110 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,111 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,111 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,111 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,111 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,112 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,112 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,112 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,112 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,113 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,113 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,113 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,113 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,113 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,114 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,114 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,114 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,114 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,116 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,116 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,116 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,117 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,117 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,117 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,117 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,117 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,119 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,119 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,120 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,120 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,120 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,120 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,121 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,121 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,121 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,122 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,122 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,122 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,123 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,123 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,124 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,124 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,124 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,124 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,125 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,125 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,125 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,125 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,126 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,129 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,129 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,130 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,130 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,131 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,131 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,131 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,131 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,131 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,131 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,132 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,132 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,140 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,140 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,141 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,141 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,141 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,141 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,142 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,142 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:21:12,174 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:21:12,181 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 24 error locations. [2019-11-26 02:21:12,198 INFO L249 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2019-11-26 02:21:12,218 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:21:12,218 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-26 02:21:12,219 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:21:12,219 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:21:12,219 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:21:12,219 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:21:12,219 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:21:12,219 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:21:12,237 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 135 places, 133 transitions [2019-11-26 02:21:12,476 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2829 states. [2019-11-26 02:21:12,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2829 states. [2019-11-26 02:21:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-26 02:21:12,489 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:12,490 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:21:12,490 INFO L410 AbstractCegarLoop]: === Iteration 1 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2019-11-26 02:21:12,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:12,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1029568245, now seen corresponding path program 1 times [2019-11-26 02:21:12,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:21:12,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [847271070] [2019-11-26 02:21:12,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:21:12,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:21:12,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:21:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:12,689 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:21:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:12,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [847271070] [2019-11-26 02:21:12,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:21:12,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:21:12,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952655683] [2019-11-26 02:21:12,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:21:12,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:21:12,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:21:12,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:21:12,722 INFO L87 Difference]: Start difference. First operand 2829 states. Second operand 3 states. [2019-11-26 02:21:12,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:21:12,931 INFO L93 Difference]: Finished difference Result 2828 states and 8216 transitions. [2019-11-26 02:21:12,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:21:12,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-26 02:21:12,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:21:12,974 INFO L225 Difference]: With dead ends: 2828 [2019-11-26 02:21:12,974 INFO L226 Difference]: Without dead ends: 2786 [2019-11-26 02:21:12,976 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:21:13,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2019-11-26 02:21:13,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2019-11-26 02:21:13,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2019-11-26 02:21:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 8102 transitions. [2019-11-26 02:21:13,151 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 8102 transitions. Word has length 19 [2019-11-26 02:21:13,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:21:13,152 INFO L462 AbstractCegarLoop]: Abstraction has 2786 states and 8102 transitions. [2019-11-26 02:21:13,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:21:13,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 8102 transitions. [2019-11-26 02:21:13,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-26 02:21:13,153 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:13,154 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:21:13,357 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:13,358 INFO L410 AbstractCegarLoop]: === Iteration 2 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2019-11-26 02:21:13,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:13,358 INFO L82 PathProgramCache]: Analyzing trace with hash 743347541, now seen corresponding path program 1 times [2019-11-26 02:21:13,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:21:13,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1112750755] [2019-11-26 02:21:13,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:21:13,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:21:13,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:21:13,564 INFO L377 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 [2019-11-26 02:21:13,565 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:13,570 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:13,571 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:13,571 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-26 02:21:13,613 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:13,613 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2019-11-26 02:21:13,616 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:13,649 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-26 02:21:13,650 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:21:13,650 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2019-11-26 02:21:13,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:13,664 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:21:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:13,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1112750755] [2019-11-26 02:21:13,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:21:13,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:21:13,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917415805] [2019-11-26 02:21:13,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:21:13,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:21:13,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:21:13,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:21:13,688 INFO L87 Difference]: Start difference. First operand 2786 states and 8102 transitions. Second operand 3 states. [2019-11-26 02:21:13,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:21:13,897 INFO L93 Difference]: Finished difference Result 2785 states and 8101 transitions. [2019-11-26 02:21:13,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:21:13,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-26 02:21:13,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:21:13,920 INFO L225 Difference]: With dead ends: 2785 [2019-11-26 02:21:13,920 INFO L226 Difference]: Without dead ends: 2785 [2019-11-26 02:21:13,921 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:21:13,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2019-11-26 02:21:14,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2785. [2019-11-26 02:21:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2019-11-26 02:21:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 8101 transitions. [2019-11-26 02:21:14,035 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 8101 transitions. Word has length 23 [2019-11-26 02:21:14,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:21:14,035 INFO L462 AbstractCegarLoop]: Abstraction has 2785 states and 8101 transitions. [2019-11-26 02:21:14,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:21:14,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 8101 transitions. [2019-11-26 02:21:14,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-26 02:21:14,036 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:14,037 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:21:14,239 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:14,248 INFO L410 AbstractCegarLoop]: === Iteration 3 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2019-11-26 02:21:14,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:14,248 INFO L82 PathProgramCache]: Analyzing trace with hash 743347542, now seen corresponding path program 1 times [2019-11-26 02:21:14,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:21:14,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2101522517] [2019-11-26 02:21:14,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:21:14,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:21:14,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:21:14,424 INFO L377 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 [2019-11-26 02:21:14,425 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:14,440 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:14,445 INFO L377 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 [2019-11-26 02:21:14,446 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:14,457 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:14,457 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:14,458 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-26 02:21:14,496 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:21:14,499 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2019-11-26 02:21:14,500 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:14,523 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:14,547 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:14,547 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2019-11-26 02:21:14,548 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:14,564 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:14,565 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:21:14,565 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:20 [2019-11-26 02:21:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:14,605 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:21:14,652 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:21:14,818 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2019-11-26 02:21:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:14,832 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2101522517] [2019-11-26 02:21:14,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:21:14,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-26 02:21:14,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400254846] [2019-11-26 02:21:14,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:21:14,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:21:14,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:21:14,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:21:14,834 INFO L87 Difference]: Start difference. First operand 2785 states and 8101 transitions. Second operand 6 states. [2019-11-26 02:21:15,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:21:15,215 INFO L93 Difference]: Finished difference Result 2784 states and 8100 transitions. [2019-11-26 02:21:15,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:21:15,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-11-26 02:21:15,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:21:15,238 INFO L225 Difference]: With dead ends: 2784 [2019-11-26 02:21:15,238 INFO L226 Difference]: Without dead ends: 2784 [2019-11-26 02:21:15,238 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:21:15,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2019-11-26 02:21:15,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2784. [2019-11-26 02:21:15,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2784 states. [2019-11-26 02:21:15,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 8100 transitions. [2019-11-26 02:21:15,335 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 8100 transitions. Word has length 23 [2019-11-26 02:21:15,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:21:15,336 INFO L462 AbstractCegarLoop]: Abstraction has 2784 states and 8100 transitions. [2019-11-26 02:21:15,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:21:15,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 8100 transitions. [2019-11-26 02:21:15,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-26 02:21:15,337 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:15,337 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:21:15,539 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:15,539 INFO L410 AbstractCegarLoop]: === Iteration 4 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2019-11-26 02:21:15,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:15,540 INFO L82 PathProgramCache]: Analyzing trace with hash 215437502, now seen corresponding path program 1 times [2019-11-26 02:21:15,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:21:15,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1443658467] [2019-11-26 02:21:15,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:21:15,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:21:15,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:21:15,699 INFO L377 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 [2019-11-26 02:21:15,699 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:15,705 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:15,706 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:15,706 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-26 02:21:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:15,717 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:21:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:15,759 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1443658467] [2019-11-26 02:21:15,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:21:15,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-26 02:21:15,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938549776] [2019-11-26 02:21:15,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:21:15,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:21:15,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:21:15,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:21:15,761 INFO L87 Difference]: Start difference. First operand 2784 states and 8100 transitions. Second operand 4 states. [2019-11-26 02:21:15,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:21:15,927 INFO L93 Difference]: Finished difference Result 2772 states and 8076 transitions. [2019-11-26 02:21:15,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:21:15,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-11-26 02:21:15,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:21:15,950 INFO L225 Difference]: With dead ends: 2772 [2019-11-26 02:21:15,950 INFO L226 Difference]: Without dead ends: 2772 [2019-11-26 02:21:15,951 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:21:15,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2019-11-26 02:21:16,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2772. [2019-11-26 02:21:16,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2772 states. [2019-11-26 02:21:16,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 8076 transitions. [2019-11-26 02:21:16,037 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 8076 transitions. Word has length 26 [2019-11-26 02:21:16,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:21:16,037 INFO L462 AbstractCegarLoop]: Abstraction has 2772 states and 8076 transitions. [2019-11-26 02:21:16,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:21:16,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 8076 transitions. [2019-11-26 02:21:16,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-26 02:21:16,038 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:16,038 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:21:16,241 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:16,245 INFO L410 AbstractCegarLoop]: === Iteration 5 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2019-11-26 02:21:16,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:16,246 INFO L82 PathProgramCache]: Analyzing trace with hash 215437501, now seen corresponding path program 1 times [2019-11-26 02:21:16,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:21:16,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [817640624] [2019-11-26 02:21:16,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:21:16,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:21:16,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:21:16,391 INFO L377 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 [2019-11-26 02:21:16,391 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:16,394 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:16,394 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:16,394 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-26 02:21:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:16,406 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:21:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:16,428 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [817640624] [2019-11-26 02:21:16,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:21:16,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2019-11-26 02:21:16,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151883104] [2019-11-26 02:21:16,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:21:16,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:21:16,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:21:16,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:21:16,429 INFO L87 Difference]: Start difference. First operand 2772 states and 8076 transitions. Second operand 4 states. [2019-11-26 02:21:16,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:21:16,569 INFO L93 Difference]: Finished difference Result 2760 states and 8052 transitions. [2019-11-26 02:21:16,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:21:16,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-11-26 02:21:16,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:21:16,591 INFO L225 Difference]: With dead ends: 2760 [2019-11-26 02:21:16,592 INFO L226 Difference]: Without dead ends: 2760 [2019-11-26 02:21:16,592 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:21:16,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2019-11-26 02:21:16,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2760. [2019-11-26 02:21:16,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2760 states. [2019-11-26 02:21:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 8052 transitions. [2019-11-26 02:21:16,722 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 8052 transitions. Word has length 26 [2019-11-26 02:21:16,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:21:16,723 INFO L462 AbstractCegarLoop]: Abstraction has 2760 states and 8052 transitions. [2019-11-26 02:21:16,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:21:16,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 8052 transitions. [2019-11-26 02:21:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-26 02:21:16,724 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:16,724 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:21:16,926 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:16,926 INFO L410 AbstractCegarLoop]: === Iteration 6 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2019-11-26 02:21:16,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:16,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1417671562, now seen corresponding path program 1 times [2019-11-26 02:21:16,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:21:16,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1537383708] [2019-11-26 02:21:16,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:21:17,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:21:17,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:21:17,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:17,043 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:21:17,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:17,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1537383708] [2019-11-26 02:21:17,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:21:17,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-26 02:21:17,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434195401] [2019-11-26 02:21:17,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:21:17,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:21:17,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:21:17,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:21:17,047 INFO L87 Difference]: Start difference. First operand 2760 states and 8052 transitions. Second operand 4 states. [2019-11-26 02:21:17,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:21:17,075 INFO L93 Difference]: Finished difference Result 2616 states and 7620 transitions. [2019-11-26 02:21:17,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:21:17,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-11-26 02:21:17,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:21:17,101 INFO L225 Difference]: With dead ends: 2616 [2019-11-26 02:21:17,106 INFO L226 Difference]: Without dead ends: 2616 [2019-11-26 02:21:17,106 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:21:17,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2019-11-26 02:21:17,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 2616. [2019-11-26 02:21:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2616 states. [2019-11-26 02:21:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2616 states to 2616 states and 7620 transitions. [2019-11-26 02:21:17,183 INFO L78 Accepts]: Start accepts. Automaton has 2616 states and 7620 transitions. Word has length 29 [2019-11-26 02:21:17,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:21:17,183 INFO L462 AbstractCegarLoop]: Abstraction has 2616 states and 7620 transitions. [2019-11-26 02:21:17,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:21:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2616 states and 7620 transitions. [2019-11-26 02:21:17,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-26 02:21:17,188 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:17,188 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:21:17,390 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:17,390 INFO L410 AbstractCegarLoop]: === Iteration 7 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2019-11-26 02:21:17,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:17,390 INFO L82 PathProgramCache]: Analyzing trace with hash 998145644, now seen corresponding path program 1 times [2019-11-26 02:21:17,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:21:17,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1205845770] [2019-11-26 02:21:17,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:21:17,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:21:17,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:21:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:17,594 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:21:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:17,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1205845770] [2019-11-26 02:21:17,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:21:17,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 6 [2019-11-26 02:21:17,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510947546] [2019-11-26 02:21:17,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:21:17,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:21:17,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:21:17,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:21:17,621 INFO L87 Difference]: Start difference. First operand 2616 states and 7620 transitions. Second operand 7 states. [2019-11-26 02:21:17,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:21:17,676 INFO L93 Difference]: Finished difference Result 2472 states and 7188 transitions. [2019-11-26 02:21:17,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:21:17,677 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2019-11-26 02:21:17,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:21:17,685 INFO L225 Difference]: With dead ends: 2472 [2019-11-26 02:21:17,685 INFO L226 Difference]: Without dead ends: 2472 [2019-11-26 02:21:17,685 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:21:17,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2019-11-26 02:21:17,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2472. [2019-11-26 02:21:17,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2472 states. [2019-11-26 02:21:17,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 7188 transitions. [2019-11-26 02:21:17,751 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 7188 transitions. Word has length 30 [2019-11-26 02:21:17,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:21:17,752 INFO L462 AbstractCegarLoop]: Abstraction has 2472 states and 7188 transitions. [2019-11-26 02:21:17,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:21:17,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 7188 transitions. [2019-11-26 02:21:17,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-26 02:21:17,753 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:17,753 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:21:17,956 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:17,957 INFO L410 AbstractCegarLoop]: === Iteration 8 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2019-11-26 02:21:17,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:17,957 INFO L82 PathProgramCache]: Analyzing trace with hash 877744076, now seen corresponding path program 1 times [2019-11-26 02:21:17,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:21:17,957 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [180827031] [2019-11-26 02:21:17,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:21:18,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:21:18,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:21:18,152 INFO L377 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 [2019-11-26 02:21:18,153 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:18,155 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:18,155 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:18,156 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-26 02:21:18,188 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:18,189 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2019-11-26 02:21:18,189 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:18,210 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-26 02:21:18,210 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:18,210 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2019-11-26 02:21:18,254 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:18,254 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 19 treesize of output 60 [2019-11-26 02:21:18,255 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:18,281 INFO L567 ElimStorePlain]: treesize reduction 28, result has 36.4 percent of original size [2019-11-26 02:21:18,281 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:21:18,282 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:16 [2019-11-26 02:21:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:18,300 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:21:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:18,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [180827031] [2019-11-26 02:21:18,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:21:18,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 6 [2019-11-26 02:21:18,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146992181] [2019-11-26 02:21:18,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:21:18,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:21:18,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:21:18,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:21:18,359 INFO L87 Difference]: Start difference. First operand 2472 states and 7188 transitions. Second operand 7 states. [2019-11-26 02:21:18,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:21:18,557 INFO L93 Difference]: Finished difference Result 2328 states and 6756 transitions. [2019-11-26 02:21:18,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:21:18,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2019-11-26 02:21:18,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:21:18,571 INFO L225 Difference]: With dead ends: 2328 [2019-11-26 02:21:18,577 INFO L226 Difference]: Without dead ends: 2328 [2019-11-26 02:21:18,578 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:21:18,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2019-11-26 02:21:18,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 2328. [2019-11-26 02:21:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2328 states. [2019-11-26 02:21:18,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2328 states to 2328 states and 6756 transitions. [2019-11-26 02:21:18,638 INFO L78 Accepts]: Start accepts. Automaton has 2328 states and 6756 transitions. Word has length 31 [2019-11-26 02:21:18,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:21:18,639 INFO L462 AbstractCegarLoop]: Abstraction has 2328 states and 6756 transitions. [2019-11-26 02:21:18,639 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:21:18,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2328 states and 6756 transitions. [2019-11-26 02:21:18,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-26 02:21:18,642 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:18,643 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:21:18,853 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:18,853 INFO L410 AbstractCegarLoop]: === Iteration 9 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2019-11-26 02:21:18,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:18,853 INFO L82 PathProgramCache]: Analyzing trace with hash -142119830, now seen corresponding path program 1 times [2019-11-26 02:21:18,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:21:18,854 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1298536716] [2019-11-26 02:21:18,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:21:18,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:21:18,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:21:19,006 INFO L377 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 [2019-11-26 02:21:19,006 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:19,010 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:19,010 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:19,010 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-26 02:21:19,040 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:19,040 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2019-11-26 02:21:19,041 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:19,062 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-26 02:21:19,063 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:21:19,063 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2019-11-26 02:21:19,134 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:21:19,134 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 19 treesize of output 60 [2019-11-26 02:21:19,135 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:21:19,170 INFO L567 ElimStorePlain]: treesize reduction 28, result has 36.4 percent of original size [2019-11-26 02:21:19,170 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:21:19,171 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:16 [2019-11-26 02:21:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:19,243 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:21:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:21:19,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1298536716] [2019-11-26 02:21:19,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:21:19,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 9 [2019-11-26 02:21:19,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997949050] [2019-11-26 02:21:19,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:21:19,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:21:19,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:21:19,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:21:19,321 INFO L87 Difference]: Start difference. First operand 2328 states and 6756 transitions. Second operand 10 states. [2019-11-26 02:21:19,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:21:19,914 INFO L93 Difference]: Finished difference Result 3417 states and 9918 transitions. [2019-11-26 02:21:19,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-26 02:21:19,915 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2019-11-26 02:21:19,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:21:19,923 INFO L225 Difference]: With dead ends: 3417 [2019-11-26 02:21:19,923 INFO L226 Difference]: Without dead ends: 3417 [2019-11-26 02:21:19,924 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:21:19,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2019-11-26 02:21:19,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 2925. [2019-11-26 02:21:19,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2019-11-26 02:21:20,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 8742 transitions. [2019-11-26 02:21:20,005 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 8742 transitions. Word has length 31 [2019-11-26 02:21:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:21:20,006 INFO L462 AbstractCegarLoop]: Abstraction has 2925 states and 8742 transitions. [2019-11-26 02:21:20,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:21:20,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 8742 transitions. [2019-11-26 02:21:20,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-26 02:21:20,006 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:21:20,007 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:21:20,209 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:20,209 INFO L410 AbstractCegarLoop]: === Iteration 10 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2019-11-26 02:21:20,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:21:20,209 INFO L82 PathProgramCache]: Analyzing trace with hash -142119829, now seen corresponding path program 1 times [2019-11-26 02:21:20,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:21:20,211 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [455579537] [2019-11-26 02:21:20,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:21:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:21:20,473 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:21:20,473 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:21:20,677 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:21:20,714 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:21:20,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:21:20 BasicIcfg [2019-11-26 02:21:20,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:21:20,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:21:20,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:21:20,716 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:21:20,717 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:21:12" (3/4) ... [2019-11-26 02:21:20,718 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:21:20,782 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9c1e7529-b5a9-4372-ac8f-c75fefb35580/bin/utaipan/witness.graphml [2019-11-26 02:21:20,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:21:20,783 INFO L168 Benchmark]: Toolchain (without parser) took 10274.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:20,784 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:21:20,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 818.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -147.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:20,785 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.13 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:20,785 INFO L168 Benchmark]: Boogie Preprocessor took 45.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:21:20,785 INFO L168 Benchmark]: RCFGBuilder took 588.62 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:20,786 INFO L168 Benchmark]: TraceAbstraction took 8676.66 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 59.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -68.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:21:20,786 INFO L168 Benchmark]: Witness Printer took 66.18 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: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:21:20,788 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 818.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -147.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 74.13 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 588.62 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8676.66 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 59.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -68.6 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 66.18 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: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1044]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1037] 0 int size; VAL [size=0] [L1038] 0 int ind; VAL [ind=0, size=0] [L1039] 0 int j = 2, i = 1; VAL [i=1, ind=0, j=2, size=0] [L1057] 0 size = __VERIFIER_nondet_int() VAL [i=1, ind=0, j=2, size=4] [L1058] COND FALSE 0 !(size < 1 || size > 20) VAL [i=1, ind=0, j=2, size=4] [L1061] 0 int *a = (int *)malloc(size); VAL [i=1, ind=0, j=2, size=4] [L1062] 0 pthread_t id1, id2; VAL [i=1, ind=0, j=2, size=4] [L1063] 0 ind = 0 VAL [i=1, ind=0, j=2, size=4] [L1064] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, a) VAL [arg={258403938:0}, i=1, ind=0, j=2, size=4] [L1041] 1 int *a = (int *)arg; VAL [a={258403938:0}, arg={258403938:0}, arg={258403938:0}, i=1, ind=0, j=2, size=4] [L1042] COND TRUE 1 ind < size - 1 VAL [a={258403938:0}, arg={258403938:0}, arg={258403938:0}, i=1, ind=0, j=2, size=4] [L1043] 1 ++ind VAL [a={258403938:0}, arg={258403938:0}, arg={258403938:0}, i=1, ind=1, j=2, size=4] [L1044] 1 a[ind] = i - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 147 locations, 24 error locations. Result: UNSAFE, OverallTime: 8.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 584 SDtfs, 927 SDslu, 1073 SDs, 0 SdLazy, 492 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 469 GetRequests, 419 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2925occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 492 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 269 NumberOfCodeBlocks, 269 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 458 ConstructedInterpolants, 7 QuantifiedInterpolants, 36267 SizeOfPredicates, 18 NumberOfNonLiveVariables, 512 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...