./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn2f.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_c29b6366-63e2-4d95-916f-a2703c7e19c4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn2f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/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 21b475462fcf81a6a340c34270a285fecf0d0ad8 ..................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-22 12:56:26,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:26,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:26,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:26,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:26,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:26,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:26,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:26,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:26,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:26,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:26,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:26,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:26,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:26,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:26,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:26,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:26,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:26,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:26,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:26,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:26,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:26,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:26,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:26,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:26,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:26,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:26,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:26,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:26,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:26,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:26,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:26,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:26,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:26,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:26,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:26,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:26,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:26,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:26,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:26,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:26,333 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:56:26,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:26,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:26,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:26,372 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:26,372 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:26,372 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:26,372 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:56:26,372 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:26,373 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:26,373 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:56:26,374 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:56:26,374 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:26,374 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:56:26,375 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:56:26,375 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:56:26,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:26,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:26,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:56:26,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:26,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:26,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:56:26,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:26,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:56:26,377 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:56:26,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:26,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:56:26,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:26,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:56:26,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:26,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:26,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:26,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:26,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:26,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:26,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:56:26,382 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:56:26,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:56:26,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:56:26,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:26,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:26,383 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_c29b6366-63e2-4d95-916f-a2703c7e19c4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21b475462fcf81a6a340c34270a285fecf0d0ad8 [2020-11-22 12:56:26,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:26,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:26,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:26,667 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:26,667 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:26,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/bin/utaipan/../../sv-benchmarks/c/array-fpi/ifeqn2f.c [2020-11-22 12:56:26,737 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/bin/utaipan/data/f6c6ddb8c/748d1ce791bd4e38a674fca2355839bb/FLAG15c9cb8a4 [2020-11-22 12:56:27,280 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:27,280 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/sv-benchmarks/c/array-fpi/ifeqn2f.c [2020-11-22 12:56:27,294 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/bin/utaipan/data/f6c6ddb8c/748d1ce791bd4e38a674fca2355839bb/FLAG15c9cb8a4 [2020-11-22 12:56:27,636 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/bin/utaipan/data/f6c6ddb8c/748d1ce791bd4e38a674fca2355839bb [2020-11-22 12:56:27,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:27,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:27,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:27,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:27,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:27,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:27" (1/1) ... [2020-11-22 12:56:27,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fb8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:27, skipping insertion in model container [2020-11-22 12:56:27,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:27" (1/1) ... [2020-11-22 12:56:27,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:27,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:27,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:27,883 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:56:27,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:27,916 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:56:27,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:27 WrapperNode [2020-11-22 12:56:27,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:27,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:27,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:56:27,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:56:27,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:27" (1/1) ... [2020-11-22 12:56:27,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:27" (1/1) ... [2020-11-22 12:56:27,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:27,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:56:27,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:56:27,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:56:27,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:27" (1/1) ... [2020-11-22 12:56:27,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:27" (1/1) ... [2020-11-22 12:56:27,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:27" (1/1) ... [2020-11-22 12:56:27,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:27" (1/1) ... [2020-11-22 12:56:27,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:27" (1/1) ... [2020-11-22 12:56:27,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:27" (1/1) ... [2020-11-22 12:56:27,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:27" (1/1) ... [2020-11-22 12:56:27,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:56:27,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:56:27,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:56:27,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:56:27,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/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 [2020-11-22 12:56:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:56:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:56:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:56:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 12:56:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:56:28,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:56:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 12:56:28,767 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:56:28,767 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-22 12:56:28,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:28 BoogieIcfgContainer [2020-11-22 12:56:28,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:56:28,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:56:28,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:56:28,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:56:28,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:56:27" (1/3) ... [2020-11-22 12:56:28,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592d0ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:28, skipping insertion in model container [2020-11-22 12:56:28,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:27" (2/3) ... [2020-11-22 12:56:28,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592d0ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:28, skipping insertion in model container [2020-11-22 12:56:28,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:28" (3/3) ... [2020-11-22 12:56:28,777 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn2f.c [2020-11-22 12:56:28,788 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:56:28,792 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:56:28,803 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:56:28,826 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:56:28,826 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:56:28,826 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:56:28,827 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:56:28,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:56:28,827 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:56:28,827 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:56:28,827 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:56:28,839 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-22 12:56:28,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:56:28,843 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:28,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:28,844 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:28,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:28,850 INFO L82 PathProgramCache]: Analyzing trace with hash 104833010, now seen corresponding path program 1 times [2020-11-22 12:56:28,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:28,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074457534] [2020-11-22 12:56:28,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:28,948 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:56:28,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522979727] [2020-11-22 12:56:28,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/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 [2020-11-22 12:56:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:29,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:56:29,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:29,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:29,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074457534] [2020-11-22 12:56:29,187 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:56:29,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522979727] [2020-11-22 12:56:29,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:29,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:56:29,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285858958] [2020-11-22 12:56:29,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:56:29,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:29,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:56:29,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:29,209 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-11-22 12:56:29,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:29,273 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2020-11-22 12:56:29,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:56:29,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-22 12:56:29,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:29,283 INFO L225 Difference]: With dead ends: 20 [2020-11-22 12:56:29,284 INFO L226 Difference]: Without dead ends: 10 [2020-11-22 12:56:29,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:29,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-22 12:56:29,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-22 12:56:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-22 12:56:29,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-11-22 12:56:29,316 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2020-11-22 12:56:29,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:29,316 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-22 12:56:29,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:56:29,317 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-11-22 12:56:29,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:56:29,317 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:29,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:29,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-22 12:56:29,533 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:29,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:29,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1096893833, now seen corresponding path program 1 times [2020-11-22 12:56:29,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:29,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123704792] [2020-11-22 12:56:29,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:29,556 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:56:29,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438935519] [2020-11-22 12:56:29,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/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 [2020-11-22 12:56:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:29,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:56:29,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-22 12:56:29,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:29,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-22 12:56:29,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123704792] [2020-11-22 12:56:29,709 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:56:29,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438935519] [2020-11-22 12:56:29,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:29,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-11-22 12:56:29,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753093440] [2020-11-22 12:56:29,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:56:29,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:29,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:56:29,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:29,712 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 5 states. [2020-11-22 12:56:29,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:29,778 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-11-22 12:56:29,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:56:29,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-22 12:56:29,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:29,779 INFO L225 Difference]: With dead ends: 21 [2020-11-22 12:56:29,779 INFO L226 Difference]: Without dead ends: 16 [2020-11-22 12:56:29,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:56:29,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-22 12:56:29,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2020-11-22 12:56:29,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-22 12:56:29,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-11-22 12:56:29,783 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2020-11-22 12:56:29,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:29,783 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-22 12:56:29,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:56:29,784 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-11-22 12:56:29,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:56:29,784 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:29,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:30,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:30,005 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:30,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:30,005 INFO L82 PathProgramCache]: Analyzing trace with hash 355073353, now seen corresponding path program 1 times [2020-11-22 12:56:30,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:30,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883151744] [2020-11-22 12:56:30,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:30,032 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:56:30,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100986820] [2020-11-22 12:56:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/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 [2020-11-22 12:56:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:56:30,114 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:56:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:56:30,140 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:56:30,167 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:56:30,168 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:56:30,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:30,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:56:30 BoogieIcfgContainer [2020-11-22 12:56:30,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:56:30,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:56:30,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:56:30,421 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:56:30,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:28" (3/4) ... [2020-11-22 12:56:30,423 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:56:30,492 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c29b6366-63e2-4d95-916f-a2703c7e19c4/bin/utaipan/witness.graphml [2020-11-22 12:56:30,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:56:30,501 INFO L168 Benchmark]: Toolchain (without parser) took 2853.48 ms. Allocated memory is still 111.1 MB. Free memory was 82.4 MB in the beginning and 44.3 MB in the end (delta: 38.1 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:30,501 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 79.7 MB. Free memory was 37.1 MB in the beginning and 37.0 MB in the end (delta: 40.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:30,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.76 ms. Allocated memory is still 111.1 MB. Free memory was 82.0 MB in the beginning and 88.7 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:30,502 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.65 ms. Allocated memory is still 111.1 MB. Free memory was 88.7 MB in the beginning and 87.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:30,503 INFO L168 Benchmark]: Boogie Preprocessor took 24.01 ms. Allocated memory is still 111.1 MB. Free memory was 87.0 MB in the beginning and 85.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:30,503 INFO L168 Benchmark]: RCFGBuilder took 792.47 ms. Allocated memory is still 111.1 MB. Free memory was 85.8 MB in the beginning and 59.7 MB in the end (delta: 26.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:30,503 INFO L168 Benchmark]: TraceAbstraction took 1648.55 ms. Allocated memory is still 111.1 MB. Free memory was 59.3 MB in the beginning and 46.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:30,504 INFO L168 Benchmark]: Witness Printer took 72.10 ms. Allocated memory is still 111.1 MB. Free memory was 46.8 MB in the beginning and 44.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:30,507 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 79.7 MB. Free memory was 37.1 MB in the beginning and 37.0 MB in the end (delta: 40.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.76 ms. Allocated memory is still 111.1 MB. Free memory was 82.0 MB in the beginning and 88.7 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.65 ms. Allocated memory is still 111.1 MB. Free memory was 88.7 MB in the beginning and 87.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.01 ms. Allocated memory is still 111.1 MB. Free memory was 87.0 MB in the beginning and 85.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 792.47 ms. Allocated memory is still 111.1 MB. Free memory was 85.8 MB in the beginning and 59.7 MB in the end (delta: 26.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1648.55 ms. Allocated memory is still 111.1 MB. Free memory was 59.3 MB in the beginning and 46.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. * Witness Printer took 72.10 ms. Allocated memory is still 111.1 MB. Free memory was 46.8 MB in the beginning and 44.3 MB in the end (delta: 2.5 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: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 VAL [N=1] [L31] COND TRUE i