./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_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/matrix-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer --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 Automizer --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 [2020-11-29 19:42:49,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:42:49,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:42:49,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:42:49,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:42:49,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:42:49,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:42:49,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:42:49,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:42:49,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:42:49,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:42:49,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:42:49,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:42:49,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:42:49,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:42:49,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:42:49,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:42:49,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:42:49,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:42:49,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:42:49,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:42:49,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:42:49,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:42:49,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:42:49,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:42:49,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:42:49,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:42:49,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:42:49,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:42:49,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:42:49,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:42:49,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:42:49,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:42:49,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:42:49,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:42:49,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:42:49,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:42:49,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:42:49,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:42:49,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:42:49,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:42:49,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:42:49,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:42:49,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:42:49,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:42:49,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:42:49,396 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:42:49,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:42:49,396 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:42:49,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:42:49,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:42:49,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:42:49,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:42:49,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:42:49,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:42:49,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:42:49,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:42:49,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:42:49,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:42:49,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:42:49,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:42:49,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:42:49,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:42:49,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:42:49,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:42:49,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:42:49,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:42:49,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:42:49,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:42:49,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:42:49,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:42:49,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80a7a6e2534d75656de513ef49811aa0c37b16c0 [2020-11-29 19:42:49,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:42:49,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:42:49,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:42:49,675 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:42:49,677 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:42:49,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer/../../sv-benchmarks/c/loops/matrix-2.c [2020-11-29 19:42:49,773 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer/data/f71de15fc/325e0e7353b841f499cfdea5e0bf7ab0/FLAGdc1b5c5f8 [2020-11-29 19:42:50,215 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:42:50,216 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/sv-benchmarks/c/loops/matrix-2.c [2020-11-29 19:42:50,223 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer/data/f71de15fc/325e0e7353b841f499cfdea5e0bf7ab0/FLAGdc1b5c5f8 [2020-11-29 19:42:50,589 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer/data/f71de15fc/325e0e7353b841f499cfdea5e0bf7ab0 [2020-11-29 19:42:50,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:42:50,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:42:50,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:42:50,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:42:50,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:42:50,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:42:50" (1/1) ... [2020-11-29 19:42:50,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee41a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:50, skipping insertion in model container [2020-11-29 19:42:50,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:42:50" (1/1) ... [2020-11-29 19:42:50,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:42:50,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:42:50,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:42:50,863 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:42:50,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:42:50,917 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:42:50,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:50 WrapperNode [2020-11-29 19:42:50,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:42:50,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:42:50,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:42:50,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:42:50,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:50" (1/1) ... [2020-11-29 19:42:50,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:50" (1/1) ... [2020-11-29 19:42:50,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:42:50,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:42:50,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:42:50,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:42:50,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:50" (1/1) ... [2020-11-29 19:42:50,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:50" (1/1) ... [2020-11-29 19:42:50,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:50" (1/1) ... [2020-11-29 19:42:50,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:50" (1/1) ... [2020-11-29 19:42:50,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:50" (1/1) ... [2020-11-29 19:42:50,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:50" (1/1) ... [2020-11-29 19:42:50,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:50" (1/1) ... [2020-11-29 19:42:50,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:42:50,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:42:50,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:42:50,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:42:50,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/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 [2020-11-29 19:42:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:42:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:42:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:42:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:42:51,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:42:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:42:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:42:51,401 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:42:51,402 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-29 19:42:51,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:42:51 BoogieIcfgContainer [2020-11-29 19:42:51,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:42:51,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:42:51,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:42:51,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:42:51,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:42:50" (1/3) ... [2020-11-29 19:42:51,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7055065c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:42:51, skipping insertion in model container [2020-11-29 19:42:51,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:42:50" (2/3) ... [2020-11-29 19:42:51,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7055065c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:42:51, skipping insertion in model container [2020-11-29 19:42:51,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:42:51" (3/3) ... [2020-11-29 19:42:51,422 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2020-11-29 19:42:51,434 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:42:51,439 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:42:51,450 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:42:51,472 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:42:51,472 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:42:51,472 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:42:51,473 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:42:51,473 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:42:51,473 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:42:51,473 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:42:51,473 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:42:51,496 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-29 19:42:51,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:42:51,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:51,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:51,504 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:42:51,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:51,513 INFO L82 PathProgramCache]: Analyzing trace with hash 228332486, now seen corresponding path program 1 times [2020-11-29 19:42:51,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:51,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7246451] [2020-11-29 19:42:51,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:51,605 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:42:51,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802895592] [2020-11-29 19:42:51,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer/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 [2020-11-29 19:42:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:51,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:42:51,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:42:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:51,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7246451] [2020-11-29 19:42:51,851 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:42:51,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802895592] [2020-11-29 19:42:51,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:51,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:42:51,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240479365] [2020-11-29 19:42:51,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:42:51,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:51,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:42:51,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:42:51,875 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2020-11-29 19:42:51,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:51,997 INFO L93 Difference]: Finished difference Result 58 states and 87 transitions. [2020-11-29 19:42:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:42:51,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 19:42:52,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:52,008 INFO L225 Difference]: With dead ends: 58 [2020-11-29 19:42:52,008 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 19:42:52,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:42:52,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 19:42:52,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2020-11-29 19:42:52,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 19:42:52,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2020-11-29 19:42:52,048 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 8 [2020-11-29 19:42:52,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:52,049 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-11-29 19:42:52,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:42:52,049 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-11-29 19:42:52,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:42:52,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:52,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:52,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-29 19:42:52,252 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:42:52,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:52,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1185124407, now seen corresponding path program 1 times [2020-11-29 19:42:52,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:52,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913224045] [2020-11-29 19:42:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:52,265 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:42:52,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287359631] [2020-11-29 19:42:52,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer/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 [2020-11-29 19:42:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:42:52,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:42:52,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:42:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:42:52,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913224045] [2020-11-29 19:42:52,392 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:42:52,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287359631] [2020-11-29 19:42:52,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:42:52,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:42:52,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170267608] [2020-11-29 19:42:52,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:42:52,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:42:52,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:42:52,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:42:52,395 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2020-11-29 19:42:52,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:42:52,485 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2020-11-29 19:42:52,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:42:52,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 19:42:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:42:52,486 INFO L225 Difference]: With dead ends: 47 [2020-11-29 19:42:52,486 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 19:42:52,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:42:52,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 19:42:52,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2020-11-29 19:42:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 19:42:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-11-29 19:42:52,491 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2020-11-29 19:42:52,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:42:52,492 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-11-29 19:42:52,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:42:52,492 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-11-29 19:42:52,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 19:42:52,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:42:52,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:42:52,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:42:52,705 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:42:52,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:42:52,705 INFO L82 PathProgramCache]: Analyzing trace with hash 206458815, now seen corresponding path program 1 times [2020-11-29 19:42:52,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:42:52,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030402820] [2020-11-29 19:42:52,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:42:52,730 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:42:52,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391459983] [2020-11-29 19:42:52,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer/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 [2020-11-29 19:42:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:42:52,805 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:42:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:42:52,826 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:42:52,847 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:42:52,847 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:42:53,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:42:53,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:42:53 BoogieIcfgContainer [2020-11-29 19:42:53,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:42:53,077 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:42:53,077 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:42:53,077 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:42:53,078 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:42:51" (3/4) ... [2020-11-29 19:42:53,080 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:42:53,131 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_35cdb137-2c88-4c8b-8c8a-456fd639e2ee/bin/uautomizer/witness.graphml [2020-11-29 19:42:53,135 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:42:53,137 INFO L168 Benchmark]: Toolchain (without parser) took 2542.00 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 75.5 MB in the beginning and 93.5 MB in the end (delta: -18.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:53,137 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory was 38.2 MB in the beginning and 38.1 MB in the end (delta: 36.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:42:53,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.51 ms. Allocated memory is still 107.0 MB. Free memory was 75.1 MB in the beginning and 83.2 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:53,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.78 ms. Allocated memory is still 107.0 MB. Free memory was 83.2 MB in the beginning and 81.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:53,141 INFO L168 Benchmark]: Boogie Preprocessor took 30.97 ms. Allocated memory is still 107.0 MB. Free memory was 81.5 MB in the beginning and 80.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:42:53,141 INFO L168 Benchmark]: RCFGBuilder took 412.94 ms. Allocated memory is still 107.0 MB. Free memory was 80.3 MB in the beginning and 65.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:53,145 INFO L168 Benchmark]: TraceAbstraction took 1662.75 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 64.7 MB in the beginning and 95.6 MB in the end (delta: -30.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:42:53,146 INFO L168 Benchmark]: Witness Printer took 58.07 ms. Allocated memory is still 132.1 MB. Free memory was 95.6 MB in the beginning and 93.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:42:53,152 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory was 38.2 MB in the beginning and 38.1 MB in the end (delta: 36.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.51 ms. Allocated memory is still 107.0 MB. Free memory was 75.1 MB in the beginning and 83.2 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.78 ms. Allocated memory is still 107.0 MB. Free memory was 83.2 MB in the beginning and 81.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.97 ms. Allocated memory is still 107.0 MB. Free memory was 81.5 MB in the beginning and 80.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 412.94 ms. Allocated memory is still 107.0 MB. Free memory was 80.3 MB in the beginning and 65.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1662.75 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 64.7 MB in the beginning and 95.6 MB in the end (delta: -30.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 58.07 ms. Allocated memory is still 132.1 MB. Free memory was 95.6 MB in the beginning and 93.5 MB in the end (delta: 2.1 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