./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/matrix-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/matrix-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80a7a6e2534d75656de513ef49811aa0c37b16c0 ............................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:43:38,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:43:38,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:43:38,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:43:38,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:43:38,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:43:38,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:43:38,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:43:38,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:43:38,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:43:38,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:43:38,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:43:38,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:43:38,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:43:38,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:43:38,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:43:38,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:43:38,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:43:38,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:43:38,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:43:38,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:43:38,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:43:38,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:43:38,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:43:38,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:43:38,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:43:38,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:43:38,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:43:38,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:43:38,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:43:38,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:43:38,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:43:38,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:43:38,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:43:38,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:43:38,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:43:38,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:43:38,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:43:38,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:43:38,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:43:38,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:43:38,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:43:38,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:43:38,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:43:38,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:43:38,888 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:43:38,888 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:43:38,888 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:43:38,889 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:43:38,889 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:43:38,889 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:43:38,889 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:43:38,889 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:43:38,890 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:43:38,890 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:43:38,890 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:43:38,890 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:43:38,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:43:38,892 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:43:38,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:43:38,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:43:38,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:43:38,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:43:38,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:43:38,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:43:38,893 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:43:38,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:43:38,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:43:38,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:43:38,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:43:38,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:43:38,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:43:38,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:43:38,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:38,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:43:38,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:43:38,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:43:38,896 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:43:38,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:43:38,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:43:38,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:43:38,897 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:43:38,897 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80a7a6e2534d75656de513ef49811aa0c37b16c0 [2020-11-28 07:43:39,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:43:39,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:43:39,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:43:39,217 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:43:39,218 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:43:39,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan/../../sv-benchmarks/c/loops/matrix-2.c [2020-11-28 07:43:39,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan/data/69fb15f38/ad6e33b1bd83414685025780d35a303d/FLAGb82fbdf8f [2020-11-28 07:43:39,944 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:43:39,945 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/sv-benchmarks/c/loops/matrix-2.c [2020-11-28 07:43:39,958 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan/data/69fb15f38/ad6e33b1bd83414685025780d35a303d/FLAGb82fbdf8f [2020-11-28 07:43:40,293 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan/data/69fb15f38/ad6e33b1bd83414685025780d35a303d [2020-11-28 07:43:40,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:43:40,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:43:40,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:40,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:43:40,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:43:40,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:40" (1/1) ... [2020-11-28 07:43:40,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c075fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:40, skipping insertion in model container [2020-11-28 07:43:40,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:40" (1/1) ... [2020-11-28 07:43:40,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:43:40,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:40,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:40,558 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:43:40,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:40,601 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:43:40,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:40 WrapperNode [2020-11-28 07:43:40,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:40,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:40,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:43:40,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:43:40,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:40" (1/1) ... [2020-11-28 07:43:40,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:40" (1/1) ... [2020-11-28 07:43:40,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:40,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:43:40,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:43:40,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:43:40,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:40" (1/1) ... [2020-11-28 07:43:40,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:40" (1/1) ... [2020-11-28 07:43:40,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:40" (1/1) ... [2020-11-28 07:43:40,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:40" (1/1) ... [2020-11-28 07:43:40,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:40" (1/1) ... [2020-11-28 07:43:40,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:40" (1/1) ... [2020-11-28 07:43:40,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:40" (1/1) ... [2020-11-28 07:43:40,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:43:40,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:43:40,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:43:40,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:43:40,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/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 [2020-11-28 07:43:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:43:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:43:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:43:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:43:40,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:43:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:43:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:43:41,400 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:43:41,400 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-28 07:43:41,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:41 BoogieIcfgContainer [2020-11-28 07:43:41,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:43:41,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:43:41,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:43:41,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:43:41,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:43:40" (1/3) ... [2020-11-28 07:43:41,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae34bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:41, skipping insertion in model container [2020-11-28 07:43:41,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:40" (2/3) ... [2020-11-28 07:43:41,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae34bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:41, skipping insertion in model container [2020-11-28 07:43:41,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:41" (3/3) ... [2020-11-28 07:43:41,413 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2020-11-28 07:43:41,426 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:43:41,431 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:43:41,445 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:43:41,470 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:43:41,470 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:43:41,470 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:43:41,471 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:43:41,471 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:43:41,471 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:43:41,471 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:43:41,471 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:43:41,486 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-28 07:43:41,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:43:41,492 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:41,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:43:41,493 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:41,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:41,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1148184584, now seen corresponding path program 1 times [2020-11-28 07:43:41,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:41,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556531647] [2020-11-28 07:43:41,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:41,590 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:43:41,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555131523] [2020-11-28 07:43:41,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:41,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:43:41,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:41,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:41,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556531647] [2020-11-28 07:43:41,913 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:43:41,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555131523] [2020-11-28 07:43:41,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:41,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:43:41,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462279576] [2020-11-28 07:43:41,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:43:41,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:41,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:43:41,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:41,959 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 5 states. [2020-11-28 07:43:42,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:42,097 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-11-28 07:43:42,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:43:42,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-28 07:43:42,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:42,110 INFO L225 Difference]: With dead ends: 27 [2020-11-28 07:43:42,111 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 07:43:42,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:43:42,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 07:43:42,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 10. [2020-11-28 07:43:42,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 07:43:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-11-28 07:43:42,151 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 6 [2020-11-28 07:43:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:42,151 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-28 07:43:42,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:43:42,151 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2020-11-28 07:43:42,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:43:42,152 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:42,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:42,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-28 07:43:42,368 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:42,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:42,369 INFO L82 PathProgramCache]: Analyzing trace with hash 475963335, now seen corresponding path program 1 times [2020-11-28 07:43:42,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:42,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286834736] [2020-11-28 07:43:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:42,375 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:43:42,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249081136] [2020-11-28 07:43:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:42,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:43:42,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:42,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:42,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286834736] [2020-11-28 07:43:42,543 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:43:42,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249081136] [2020-11-28 07:43:42,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:42,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-11-28 07:43:42,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282381265] [2020-11-28 07:43:42,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:43:42,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:42,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:43:42,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:42,547 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand 5 states. [2020-11-28 07:43:42,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:42,754 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-11-28 07:43:42,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:43:42,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-28 07:43:42,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:42,756 INFO L225 Difference]: With dead ends: 28 [2020-11-28 07:43:42,756 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:43:42,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:43:42,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:43:42,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2020-11-28 07:43:42,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 07:43:42,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2020-11-28 07:43:42,761 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 8 [2020-11-28 07:43:42,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:42,761 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-28 07:43:42,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:43:42,762 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2020-11-28 07:43:42,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:43:42,762 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:42,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:42,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:42,963 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:42,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:42,964 INFO L82 PathProgramCache]: Analyzing trace with hash -833754564, now seen corresponding path program 1 times [2020-11-28 07:43:42,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:42,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34548943] [2020-11-28 07:43:42,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:42,969 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:43:42,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640592982] [2020-11-28 07:43:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:43:43,038 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:43:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:43:43,061 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:43:43,089 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:43:43,090 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:43:43,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:43,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:43:43 BoogieIcfgContainer [2020-11-28 07:43:43,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:43:43,338 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:43:43,338 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:43:43,339 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:43:43,339 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:41" (3/4) ... [2020-11-28 07:43:43,341 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:43:43,393 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_eead6997-d056-4fb7-aad6-e266d4eefd7c/bin/utaipan/witness.graphml [2020-11-28 07:43:43,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:43:43,395 INFO L168 Benchmark]: Toolchain (without parser) took 3096.69 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 54.9 MB in the beginning and 85.5 MB in the end (delta: -30.7 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:43,396 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory is still 71.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:43,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.88 ms. Allocated memory is still 90.2 MB. Free memory was 54.7 MB in the beginning and 67.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:43,397 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.72 ms. Allocated memory is still 90.2 MB. Free memory was 67.2 MB in the beginning and 65.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:43,397 INFO L168 Benchmark]: Boogie Preprocessor took 27.93 ms. Allocated memory is still 90.2 MB. Free memory was 65.6 MB in the beginning and 64.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:43,398 INFO L168 Benchmark]: RCFGBuilder took 729.40 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 64.3 MB in the beginning and 82.3 MB in the end (delta: -18.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:43,399 INFO L168 Benchmark]: TraceAbstraction took 1933.26 ms. Allocated memory is still 109.1 MB. Free memory was 81.9 MB in the beginning and 41.6 MB in the end (delta: 40.3 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:43,400 INFO L168 Benchmark]: Witness Printer took 54.85 ms. Allocated memory is still 109.1 MB. Free memory was 41.6 MB in the beginning and 85.5 MB in the end (delta: -44.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:43,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory is still 71.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.88 ms. Allocated memory is still 90.2 MB. Free memory was 54.7 MB in the beginning and 67.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.72 ms. Allocated memory is still 90.2 MB. Free memory was 67.2 MB in the beginning and 65.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.93 ms. Allocated memory is still 90.2 MB. Free memory was 65.6 MB in the beginning and 64.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 729.40 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 64.3 MB in the beginning and 82.3 MB in the end (delta: -18.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1933.26 ms. Allocated memory is still 109.1 MB. Free memory was 81.9 MB in the beginning and 41.6 MB in the end (delta: 40.3 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. * Witness Printer took 54.85 ms. Allocated memory is still 109.1 MB. Free memory was 41.6 MB in the beginning and 85.5 MB in the end (delta: -44.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L17] unsigned int N_COL=__VERIFIER_nondet_uint(); [L18] unsigned int j,k; [L19] int matriz[N_COL][N_LIN], maior; [L21] maior = __VERIFIER_nondet_int() [L22] j=0 [L22] COND TRUE jmaior [L28] EXPR matriz[j][k] [L28] maior = matriz[j][k] [L23] k++ [L23] COND FALSE !(k