./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/matrix-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/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 0.2.0-7b2dab5 [2020-12-09 04:51:20,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 04:51:20,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 04:51:20,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 04:51:20,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 04:51:20,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 04:51:20,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 04:51:20,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 04:51:20,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 04:51:20,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 04:51:20,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 04:51:20,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 04:51:20,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 04:51:20,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 04:51:20,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 04:51:20,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 04:51:20,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 04:51:20,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 04:51:21,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 04:51:21,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 04:51:21,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 04:51:21,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 04:51:21,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 04:51:21,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 04:51:21,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 04:51:21,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 04:51:21,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 04:51:21,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 04:51:21,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 04:51:21,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 04:51:21,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 04:51:21,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 04:51:21,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 04:51:21,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 04:51:21,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 04:51:21,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 04:51:21,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 04:51:21,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 04:51:21,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 04:51:21,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 04:51:21,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 04:51:21,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 04:51:21,034 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 04:51:21,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 04:51:21,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 04:51:21,035 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 04:51:21,035 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 04:51:21,035 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 04:51:21,035 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 04:51:21,035 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 04:51:21,035 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 04:51:21,036 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 04:51:21,036 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 04:51:21,036 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 04:51:21,036 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 04:51:21,036 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 04:51:21,036 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 04:51:21,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 04:51:21,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 04:51:21,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 04:51:21,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 04:51:21,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 04:51:21,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 04:51:21,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 04:51:21,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 04:51:21,038 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 04:51:21,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 04:51:21,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 04:51:21,038 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 04:51:21,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 04:51:21,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 04:51:21,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 04:51:21,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:51:21,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 04:51:21,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 04:51:21,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 04:51:21,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 04:51:21,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 04:51:21,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 04:51:21,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 04:51:21,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 04:51:21,040 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_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80a7a6e2534d75656de513ef49811aa0c37b16c0 [2020-12-09 04:51:21,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 04:51:21,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 04:51:21,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 04:51:21,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 04:51:21,239 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 04:51:21,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/bin/utaipan/../../sv-benchmarks/c/loops/matrix-2.c [2020-12-09 04:51:21,281 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/bin/utaipan/data/39d0e0880/36a967e49fce4963b7712c080a8df011/FLAGee43898ee [2020-12-09 04:51:21,586 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 04:51:21,586 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/sv-benchmarks/c/loops/matrix-2.c [2020-12-09 04:51:21,590 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/bin/utaipan/data/39d0e0880/36a967e49fce4963b7712c080a8df011/FLAGee43898ee [2020-12-09 04:51:22,017 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/bin/utaipan/data/39d0e0880/36a967e49fce4963b7712c080a8df011 [2020-12-09 04:51:22,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 04:51:22,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 04:51:22,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 04:51:22,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 04:51:22,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 04:51:22,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:51:22" (1/1) ... [2020-12-09 04:51:22,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9aa0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:22, skipping insertion in model container [2020-12-09 04:51:22,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:51:22" (1/1) ... [2020-12-09 04:51:22,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 04:51:22,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 04:51:22,139 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/sv-benchmarks/c/loops/matrix-2.c[320,333] [2020-12-09 04:51:22,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:51:22,156 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 04:51:22,164 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/sv-benchmarks/c/loops/matrix-2.c[320,333] [2020-12-09 04:51:22,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:51:22,180 INFO L208 MainTranslator]: Completed translation [2020-12-09 04:51:22,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:22 WrapperNode [2020-12-09 04:51:22,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 04:51:22,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 04:51:22,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 04:51:22,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 04:51:22,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:22" (1/1) ... [2020-12-09 04:51:22,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:22" (1/1) ... [2020-12-09 04:51:22,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 04:51:22,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 04:51:22,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 04:51:22,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 04:51:22,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:22" (1/1) ... [2020-12-09 04:51:22,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:22" (1/1) ... [2020-12-09 04:51:22,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:22" (1/1) ... [2020-12-09 04:51:22,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:22" (1/1) ... [2020-12-09 04:51:22,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:22" (1/1) ... [2020-12-09 04:51:22,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:22" (1/1) ... [2020-12-09 04:51:22,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:22" (1/1) ... [2020-12-09 04:51:22,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 04:51:22,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 04:51:22,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 04:51:22,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 04:51:22,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/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 [2020-12-09 04:51:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 04:51:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 04:51:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 04:51:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 04:51:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 04:51:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 04:51:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 04:51:22,556 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 04:51:22,556 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-09 04:51:22,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:51:22 BoogieIcfgContainer [2020-12-09 04:51:22,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 04:51:22,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 04:51:22,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 04:51:22,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 04:51:22,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:51:22" (1/3) ... [2020-12-09 04:51:22,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3599847f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:51:22, skipping insertion in model container [2020-12-09 04:51:22,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:51:22" (2/3) ... [2020-12-09 04:51:22,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3599847f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:51:22, skipping insertion in model container [2020-12-09 04:51:22,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:51:22" (3/3) ... [2020-12-09 04:51:22,564 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2020-12-09 04:51:22,574 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 04:51:22,576 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 04:51:22,584 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 04:51:22,602 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 04:51:22,603 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 04:51:22,603 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 04:51:22,603 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 04:51:22,603 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 04:51:22,603 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 04:51:22,603 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 04:51:22,603 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 04:51:22,616 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-12-09 04:51:22,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 04:51:22,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:22,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 04:51:22,621 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:51:22,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:22,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1208213449, now seen corresponding path program 1 times [2020-12-09 04:51:22,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:22,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054264297] [2020-12-09 04:51:22,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:22,697 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 04:51:22,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505388077] [2020-12-09 04:51:22,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/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 [2020-12-09 04:51:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:22,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 04:51:22,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:51:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:22,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:51:22,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:22,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054264297] [2020-12-09 04:51:22,864 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 04:51:22,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505388077] [2020-12-09 04:51:22,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:22,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 04:51:22,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3340397] [2020-12-09 04:51:22,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 04:51:22,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:22,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 04:51:22,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 04:51:22,880 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 5 states. [2020-12-09 04:51:22,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:22,939 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-12-09 04:51:22,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:22,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-09 04:51:22,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:22,945 INFO L225 Difference]: With dead ends: 27 [2020-12-09 04:51:22,945 INFO L226 Difference]: Without dead ends: 17 [2020-12-09 04:51:22,947 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 [2020-12-09 04:51:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-09 04:51:22,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 10. [2020-12-09 04:51:22,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-09 04:51:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-12-09 04:51:22,969 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 6 [2020-12-09 04:51:22,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:22,969 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-12-09 04:51:22,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 04:51:22,969 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2020-12-09 04:51:22,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 04:51:22,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:22,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:23,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 04:51:23,171 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:51:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:23,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1196651945, now seen corresponding path program 1 times [2020-12-09 04:51:23,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:23,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278816094] [2020-12-09 04:51:23,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:23,192 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 04:51:23,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092809113] [2020-12-09 04:51:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/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 [2020-12-09 04:51:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:23,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 04:51:23,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:51:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:23,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:51:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:23,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278816094] [2020-12-09 04:51:23,381 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 04:51:23,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092809113] [2020-12-09 04:51:23,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:23,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-09 04:51:23,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586543177] [2020-12-09 04:51:23,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 04:51:23,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:51:23,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 04:51:23,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 04:51:23,384 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand 5 states. [2020-12-09 04:51:23,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:23,431 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-12-09 04:51:23,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:23,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 04:51:23,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:23,433 INFO L225 Difference]: With dead ends: 28 [2020-12-09 04:51:23,433 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 04:51:23,433 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 [2020-12-09 04:51:23,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 04:51:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2020-12-09 04:51:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 04:51:23,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2020-12-09 04:51:23,437 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 8 [2020-12-09 04:51:23,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:23,437 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-12-09 04:51:23,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 04:51:23,437 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2020-12-09 04:51:23,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 04:51:23,438 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:23,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:23,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:51:23,639 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:51:23,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:23,641 INFO L82 PathProgramCache]: Analyzing trace with hash 29985303, now seen corresponding path program 1 times [2020-12-09 04:51:23,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:51:23,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528275067] [2020-12-09 04:51:23,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:51:23,653 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 04:51:23,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498508860] [2020-12-09 04:51:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/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 [2020-12-09 04:51:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 04:51:23,735 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 04:51:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 04:51:23,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 04:51:23,775 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 04:51:23,775 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 04:51:23,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:51:24,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:51:24 BoogieIcfgContainer [2020-12-09 04:51:24,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 04:51:24,025 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 04:51:24,025 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 04:51:24,025 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 04:51:24,026 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:51:22" (3/4) ... [2020-12-09 04:51:24,027 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 04:51:24,056 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_95d898b6-b0ed-40cc-a74c-c3cacb31d7bf/bin/utaipan/witness.graphml [2020-12-09 04:51:24,056 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 04:51:24,057 INFO L168 Benchmark]: Toolchain (without parser) took 2035.44 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 41.9 MB in the beginning and 45.3 MB in the end (delta: -3.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-12-09 04:51:24,058 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 81.8 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:51:24,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.65 ms. Allocated memory is still 81.8 MB. Free memory was 61.7 MB in the beginning and 52.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 04:51:24,058 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.40 ms. Allocated memory is still 81.8 MB. Free memory was 52.0 MB in the beginning and 50.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 04:51:24,059 INFO L168 Benchmark]: Boogie Preprocessor took 17.52 ms. Allocated memory is still 81.8 MB. Free memory was 50.1 MB in the beginning and 49.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:51:24,059 INFO L168 Benchmark]: RCFGBuilder took 332.98 ms. Allocated memory is still 81.8 MB. Free memory was 48.8 MB in the beginning and 43.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 04:51:24,060 INFO L168 Benchmark]: TraceAbstraction took 1465.47 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 43.3 MB in the beginning and 47.3 MB in the end (delta: -4.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2020-12-09 04:51:24,060 INFO L168 Benchmark]: Witness Printer took 31.40 ms. Allocated memory is still 98.6 MB. Free memory was 47.3 MB in the beginning and 45.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:51:24,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 81.8 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 152.65 ms. Allocated memory is still 81.8 MB. Free memory was 61.7 MB in the beginning and 52.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.40 ms. Allocated memory is still 81.8 MB. Free memory was 52.0 MB in the beginning and 50.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.52 ms. Allocated memory is still 81.8 MB. Free memory was 50.1 MB in the beginning and 49.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 332.98 ms. Allocated memory is still 81.8 MB. Free memory was 48.8 MB in the beginning and 43.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1465.47 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 43.3 MB in the beginning and 47.3 MB in the end (delta: -4.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. * Witness Printer took 31.40 ms. Allocated memory is still 98.6 MB. Free memory was 47.3 MB in the beginning and 45.3 MB in the end (delta: 2.0 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: 7]: a call to reach_error is reachable a call to reach_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