./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c --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_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6853fb9e064ccfef5e54a8bac94eb86beeed80f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 [2019-11-25 08:58:22,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:58:22,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:58:22,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:58:22,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:58:22,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:58:22,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:58:22,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:58:22,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:58:22,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:58:22,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:58:22,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:58:22,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:58:22,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:58:22,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:58:22,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:58:22,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:58:22,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:58:22,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:58:22,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:58:22,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:58:22,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:58:22,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:58:22,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:58:22,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:58:22,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:58:22,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:58:22,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:58:22,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:58:22,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:58:22,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:58:22,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:58:22,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:58:22,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:58:22,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:58:22,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:58:22,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:58:22,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:58:22,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:58:22,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:58:22,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:58:22,764 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-25 08:58:22,779 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:58:22,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:58:22,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:58:22,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:58:22,781 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:58:22,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:58:22,782 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:58:22,782 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:58:22,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:58:22,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:58:22,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:58:22,783 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:58:22,784 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:58:22,784 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-25 08:58:22,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:58:22,784 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:58:22,784 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:58:22,785 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:58:22,785 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:58:22,785 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:58:22,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:58:22,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:58:22,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:58:22,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:58:22,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:58:22,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:58:22,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:58:22,787 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:58:22,787 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:58:22,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:58:22,787 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_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G 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 -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6853fb9e064ccfef5e54a8bac94eb86beeed80f [2019-11-25 08:58:22,947 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:58:22,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:58:22,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:58:22,964 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:58:22,965 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:58:22,965 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2019-11-25 08:58:23,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/data/3ea0caa70/a414a0c90936494c86da7d4f181a5240/FLAG4a97e2f6c [2019-11-25 08:58:23,361 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:58:23,361 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2019-11-25 08:58:23,366 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/data/3ea0caa70/a414a0c90936494c86da7d4f181a5240/FLAG4a97e2f6c [2019-11-25 08:58:23,818 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/data/3ea0caa70/a414a0c90936494c86da7d4f181a5240 [2019-11-25 08:58:23,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:58:23,824 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:58:23,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:58:23,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:58:23,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:58:23,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:58:23" (1/1) ... [2019-11-25 08:58:23,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171373d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:23, skipping insertion in model container [2019-11-25 08:58:23,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:58:23" (1/1) ... [2019-11-25 08:58:23,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:58:23,857 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:58:24,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:58:24,074 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:58:24,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:58:24,108 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:58:24,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:24 WrapperNode [2019-11-25 08:58:24,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:58:24,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:58:24,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:58:24,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:58:24,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:24" (1/1) ... [2019-11-25 08:58:24,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:24" (1/1) ... [2019-11-25 08:58:24,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:24" (1/1) ... [2019-11-25 08:58:24,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:24" (1/1) ... [2019-11-25 08:58:24,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:24" (1/1) ... [2019-11-25 08:58:24,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:24" (1/1) ... [2019-11-25 08:58:24,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:24" (1/1) ... [2019-11-25 08:58:24,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:58:24,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:58:24,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:58:24,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:58:24,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:58:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:58:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:58:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2019-11-25 08:58:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-11-25 08:58:24,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:58:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2019-11-25 08:58:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:58:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-11-25 08:58:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:58:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:58:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:58:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:58:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:58:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:58:24,731 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:58:24,731 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:58:24,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:58:24 BoogieIcfgContainer [2019-11-25 08:58:24,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:58:24,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:58:24,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:58:24,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:58:24,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:58:23" (1/3) ... [2019-11-25 08:58:24,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ba4f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:58:24, skipping insertion in model container [2019-11-25 08:58:24,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:58:24" (2/3) ... [2019-11-25 08:58:24,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ba4f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:58:24, skipping insertion in model container [2019-11-25 08:58:24,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:58:24" (3/3) ... [2019-11-25 08:58:24,740 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-write.c [2019-11-25 08:58:24,753 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:58:24,761 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-11-25 08:58:24,773 INFO L249 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-11-25 08:58:24,797 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:58:24,798 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:58:24,798 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:58:24,798 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:58:24,798 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:58:24,798 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:58:24,799 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:58:24,799 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:58:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-11-25 08:58:24,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:58:24,832 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:24,832 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:24,834 INFO L410 AbstractCegarLoop]: === Iteration 1 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-25 08:58:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:24,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1451105141, now seen corresponding path program 1 times [2019-11-25 08:58:24,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:58:24,851 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1669678487] [2019-11-25 08:58:24,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/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 [2019-11-25 08:58:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:24,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-25 08:58:24,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:24,973 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:58:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:24,992 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1669678487] [2019-11-25 08:58:24,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:24,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:58:24,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782992103] [2019-11-25 08:58:25,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:58:25,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:58:25,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:58:25,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:58:25,016 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2019-11-25 08:58:25,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:25,040 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2019-11-25 08:58:25,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:58:25,041 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:58:25,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:25,054 INFO L225 Difference]: With dead ends: 50 [2019-11-25 08:58:25,054 INFO L226 Difference]: Without dead ends: 47 [2019-11-25 08:58:25,060 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:58:25,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-25 08:58:25,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-11-25 08:58:25,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-25 08:58:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2019-11-25 08:58:25,100 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 10 [2019-11-25 08:58:25,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:25,101 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2019-11-25 08:58:25,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:58:25,101 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2019-11-25 08:58:25,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:58:25,102 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:25,102 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:25,304 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:25,305 INFO L410 AbstractCegarLoop]: === Iteration 2 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-25 08:58:25,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:25,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1450777440, now seen corresponding path program 1 times [2019-11-25 08:58:25,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:58:25,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2071820564] [2019-11-25 08:58:25,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/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 [2019-11-25 08:58:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:25,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:58:25,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:25,405 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:58:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:25,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2071820564] [2019-11-25 08:58:25,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:25,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-25 08:58:25,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700845982] [2019-11-25 08:58:25,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:58:25,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:58:25,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:58:25,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:58:25,421 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 4 states. [2019-11-25 08:58:25,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:25,498 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2019-11-25 08:58:25,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:58:25,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-25 08:58:25,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:25,501 INFO L225 Difference]: With dead ends: 54 [2019-11-25 08:58:25,501 INFO L226 Difference]: Without dead ends: 54 [2019-11-25 08:58:25,502 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:58:25,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-25 08:58:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2019-11-25 08:58:25,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-25 08:58:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2019-11-25 08:58:25,511 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 10 [2019-11-25 08:58:25,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:25,511 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2019-11-25 08:58:25,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:58:25,511 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2019-11-25 08:58:25,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:58:25,512 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:25,512 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:25,723 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:25,724 INFO L410 AbstractCegarLoop]: === Iteration 3 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-25 08:58:25,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:25,725 INFO L82 PathProgramCache]: Analyzing trace with hash 2027141917, now seen corresponding path program 1 times [2019-11-25 08:58:25,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:58:25,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [196106620] [2019-11-25 08:58:25,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/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 [2019-11-25 08:58:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:25,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:58:25,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:25,885 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 [2019-11-25 08:58:25,885 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:58:25,888 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:58:25,889 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:58:25,889 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:58:25,936 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:58:25,937 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 [2019-11-25 08:58:25,938 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:58:25,965 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-25 08:58:25,966 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. [2019-11-25 08:58:25,966 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2019-11-25 08:58:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:25,989 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:58:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:26,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [196106620] [2019-11-25 08:58:26,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:26,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-25 08:58:26,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253819468] [2019-11-25 08:58:26,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:58:26,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:58:26,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:58:26,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:58:26,021 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 5 states. [2019-11-25 08:58:26,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:26,220 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2019-11-25 08:58:26,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:58:26,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-25 08:58:26,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:26,223 INFO L225 Difference]: With dead ends: 50 [2019-11-25 08:58:26,223 INFO L226 Difference]: Without dead ends: 50 [2019-11-25 08:58:26,223 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:58:26,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-25 08:58:26,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-11-25 08:58:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-25 08:58:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2019-11-25 08:58:26,233 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 11 [2019-11-25 08:58:26,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:26,234 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2019-11-25 08:58:26,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:58:26,234 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2019-11-25 08:58:26,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:58:26,235 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:26,235 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:26,436 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:26,436 INFO L410 AbstractCegarLoop]: === Iteration 4 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-25 08:58:26,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:26,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2027141918, now seen corresponding path program 1 times [2019-11-25 08:58:26,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:58:26,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [372587263] [2019-11-25 08:58:26,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/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 [2019-11-25 08:58:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:26,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-25 08:58:26,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:26,557 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 [2019-11-25 08:58:26,557 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:58:26,569 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:58:26,574 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 [2019-11-25 08:58:26,575 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:58:26,588 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:58:26,588 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:58:26,588 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-25 08:58:26,634 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:58:26,634 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 [2019-11-25 08:58:26,635 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:58:26,651 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:58:26,658 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 [2019-11-25 08:58:26,659 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:58:26,675 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:58:26,676 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-25 08:58:26,676 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:25 [2019-11-25 08:58:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:26,710 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:58:26,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-25 08:58:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:27,120 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [372587263] [2019-11-25 08:58:27,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:27,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-25 08:58:27,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522150902] [2019-11-25 08:58:27,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:58:27,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:58:27,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:58:27,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:58:27,121 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 8 states. [2019-11-25 08:58:27,532 WARN L192 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2019-11-25 08:58:28,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:28,301 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2019-11-25 08:58:28,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:58:28,302 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-25 08:58:28,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:28,305 INFO L225 Difference]: With dead ends: 78 [2019-11-25 08:58:28,306 INFO L226 Difference]: Without dead ends: 78 [2019-11-25 08:58:28,306 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:58:28,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-25 08:58:28,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2019-11-25 08:58:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-25 08:58:28,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2019-11-25 08:58:28,317 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 11 [2019-11-25 08:58:28,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:28,317 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2019-11-25 08:58:28,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:58:28,317 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2019-11-25 08:58:28,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-25 08:58:28,318 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:28,318 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:28,520 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:28,520 INFO L410 AbstractCegarLoop]: === Iteration 5 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-25 08:58:28,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:28,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1583110009, now seen corresponding path program 1 times [2019-11-25 08:58:28,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:58:28,521 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [419573864] [2019-11-25 08:58:28,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/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 [2019-11-25 08:58:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:28,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:58:28,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:28,615 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 [2019-11-25 08:58:28,616 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:58:28,618 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:58:28,619 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:58:28,619 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:58:28,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:28,628 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:58:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:28,657 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [419573864] [2019-11-25 08:58:28,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:58:28,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2019-11-25 08:58:28,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136904943] [2019-11-25 08:58:28,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:58:28,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:58:28,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:58:28,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:58:28,659 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 4 states. [2019-11-25 08:58:28,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:58:28,742 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2019-11-25 08:58:28,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:58:28,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-25 08:58:28,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:58:28,743 INFO L225 Difference]: With dead ends: 61 [2019-11-25 08:58:28,744 INFO L226 Difference]: Without dead ends: 61 [2019-11-25 08:58:28,744 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:58:28,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-25 08:58:28,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-25 08:58:28,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-25 08:58:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2019-11-25 08:58:28,751 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 12 [2019-11-25 08:58:28,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:58:28,752 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2019-11-25 08:58:28,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:58:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2019-11-25 08:58:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-25 08:58:28,752 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:58:28,753 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:58:28,962 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:28,962 INFO L410 AbstractCegarLoop]: === Iteration 6 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-25 08:58:28,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:28,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1583110008, now seen corresponding path program 1 times [2019-11-25 08:58:28,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:58:28,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1963627279] [2019-11-25 08:58:28,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/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 [2019-11-25 08:58:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:58:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:58:29,115 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:58:29,115 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:58:29,316 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:58:29,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:58:29 BoogieIcfgContainer [2019-11-25 08:58:29,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:58:29,341 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:58:29,342 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:58:29,342 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:58:29,342 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:58:24" (3/4) ... [2019-11-25 08:58:29,344 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:58:29,385 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5bd95a8e-7cbe-46d4-a9ee-d2d142d3bc6d/bin/uautomizer/witness.graphml [2019-11-25 08:58:29,385 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:58:29,388 INFO L168 Benchmark]: Toolchain (without parser) took 5564.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.0 MB). Free memory was 951.4 MB in the beginning and 937.9 MB in the end (delta: 13.5 MB). Peak memory consumption was 185.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:29,388 INFO L168 Benchmark]: CDTParser took 0.18 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. [2019-11-25 08:58:29,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.0 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -212.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:29,389 INFO L168 Benchmark]: Boogie Preprocessor took 38.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:58:29,389 INFO L168 Benchmark]: RCFGBuilder took 583.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:29,390 INFO L168 Benchmark]: TraceAbstraction took 4607.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 937.9 MB in the end (delta: 199.0 MB). Peak memory consumption was 199.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:29,390 INFO L168 Benchmark]: Witness Printer took 44.01 ms. Allocated memory is still 1.2 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:58:29,392 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 284.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.0 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -212.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 583.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4607.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 937.9 MB in the end (delta: 199.0 MB). Peak memory consumption was 199.0 MB. Max. memory is 11.5 GB. * Witness Printer took 44.01 ms. Allocated memory is still 1.2 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={3:0}, i=0] [L33] COND TRUE i < 100 VAL [b={3:0}, i=0] [L34] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={3:0}] [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={134217731:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={134217731:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L23] EXPR b[i] VAL [\old(n)=0, \old(size)=1, a={134217731:0}, b={3:0}, b={3:0}, b[i]=0, i=0, n=0, size=1] [L23] a[i] = b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 locations, 11 error locations. Result: UNSAFE, OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 218 SDtfs, 93 SDslu, 286 SDs, 0 SdLazy, 221 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 98 ConstructedInterpolants, 7 QuantifiedInterpolants, 4844 SizeOfPredicates, 14 NumberOfNonLiveVariables, 230 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...