./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Ben-Amram-LMCS2010-Ex2.3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6d036213-3287-422d-b049-80ac6567e3a0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6d036213-3287-422d-b049-80ac6567e3a0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6d036213-3287-422d-b049-80ac6567e3a0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6d036213-3287-422d-b049-80ac6567e3a0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Ben-Amram-LMCS2010-Ex2.3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6d036213-3287-422d-b049-80ac6567e3a0/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6d036213-3287-422d-b049-80ac6567e3a0/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 914e210bb2ee753bbbdbfa23a6e9397216225fad ................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:23:47,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:23:47,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:23:47,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:23:47,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:23:47,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:23:47,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:23:47,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:23:47,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:23:47,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:23:47,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:23:47,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:23:47,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:23:47,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:23:47,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:23:47,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:23:47,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:23:47,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:23:47,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:23:47,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:23:47,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:23:47,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:23:47,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:23:47,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:23:47,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:23:47,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:23:47,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:23:47,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:23:47,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:23:47,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:23:47,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:23:47,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:23:47,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:23:47,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:23:47,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:23:47,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:23:47,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:23:47,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:23:47,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:23:47,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:23:47,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:23:47,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6d036213-3287-422d-b049-80ac6567e3a0/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-30 02:23:47,390 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:23:47,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:23:47,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:23:47,392 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:23:47,392 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:23:47,393 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:23:47,393 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:23:47,393 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:23:47,393 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:23:47,393 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:23:47,395 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:23:47,395 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:23:47,395 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:23:47,395 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:23:47,396 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:23:47,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:23:47,397 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:23:47,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:23:47,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:23:47,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:23:47,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:23:47,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:23:47,405 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 02:23:47,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:23:47,406 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:23:47,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:23:47,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:23:47,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:23:47,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:23:47,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:23:47,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:23:47,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:23:47,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:23:47,408 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:23:47,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:23:47,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:23:47,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:23:47,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:23:47,409 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_6d036213-3287-422d-b049-80ac6567e3a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6d036213-3287-422d-b049-80ac6567e3a0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 914e210bb2ee753bbbdbfa23a6e9397216225fad [2020-11-30 02:23:47,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:23:47,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:23:47,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:23:47,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:23:47,797 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:23:47,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6d036213-3287-422d-b049-80ac6567e3a0/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/Ben-Amram-LMCS2010-Ex2.3.c [2020-11-30 02:23:47,899 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d036213-3287-422d-b049-80ac6567e3a0/bin/utaipan/data/f4ff4a2bf/78f01876799e4a6d877eb8284a8c3776/FLAG874a761f2 [2020-11-30 02:23:48,411 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:23:48,411 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6d036213-3287-422d-b049-80ac6567e3a0/sv-benchmarks/c/termination-crafted-lit/Ben-Amram-LMCS2010-Ex2.3.c [2020-11-30 02:23:48,419 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d036213-3287-422d-b049-80ac6567e3a0/bin/utaipan/data/f4ff4a2bf/78f01876799e4a6d877eb8284a8c3776/FLAG874a761f2 [2020-11-30 02:23:48,815 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6d036213-3287-422d-b049-80ac6567e3a0/bin/utaipan/data/f4ff4a2bf/78f01876799e4a6d877eb8284a8c3776 [2020-11-30 02:23:48,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:23:48,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:23:48,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:23:48,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:23:48,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:23:48,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:23:48" (1/1) ... [2020-11-30 02:23:48,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df3af1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:48, skipping insertion in model container [2020-11-30 02:23:48,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:23:48" (1/1) ... [2020-11-30 02:23:48,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:23:48,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:23:49,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:23:49,100 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:23:49,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:23:49,137 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:23:49,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:49 WrapperNode [2020-11-30 02:23:49,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:23:49,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:23:49,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:23:49,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:23:49,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:49" (1/1) ... [2020-11-30 02:23:49,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:49" (1/1) ... [2020-11-30 02:23:49,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:23:49,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:23:49,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:23:49,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:23:49,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:49" (1/1) ... [2020-11-30 02:23:49,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:49" (1/1) ... [2020-11-30 02:23:49,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:49" (1/1) ... [2020-11-30 02:23:49,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:49" (1/1) ... [2020-11-30 02:23:49,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:49" (1/1) ... [2020-11-30 02:23:49,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:49" (1/1) ... [2020-11-30 02:23:49,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:49" (1/1) ... [2020-11-30 02:23:49,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:23:49,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:23:49,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:23:49,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:23:49,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6d036213-3287-422d-b049-80ac6567e3a0/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 [2020-11-30 02:23:49,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:23:49,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:23:49,727 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:23:49,727 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 02:23:49,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:23:49 BoogieIcfgContainer [2020-11-30 02:23:49,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:23:49,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:23:49,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:23:49,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:23:49,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:23:48" (1/3) ... [2020-11-30 02:23:49,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266465f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:23:49, skipping insertion in model container [2020-11-30 02:23:49,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:23:49" (2/3) ... [2020-11-30 02:23:49,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266465f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:23:49, skipping insertion in model container [2020-11-30 02:23:49,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:23:49" (3/3) ... [2020-11-30 02:23:49,739 INFO L111 eAbstractionObserver]: Analyzing ICFG Ben-Amram-LMCS2010-Ex2.3.c [2020-11-30 02:23:49,751 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:23:49,761 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 02:23:49,774 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 02:23:49,813 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:23:49,814 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:23:49,814 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:23:49,814 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:23:49,814 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:23:49,815 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:23:49,815 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:23:49,815 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:23:49,831 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-30 02:23:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 02:23:49,837 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:49,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 02:23:49,838 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:23:49,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:49,845 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-11-30 02:23:49,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:49,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375190373] [2020-11-30 02:23:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:23:50,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375190373] [2020-11-30 02:23:50,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:50,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 02:23:50,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855317812] [2020-11-30 02:23:50,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:23:50,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:50,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:23:50,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:50,041 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-11-30 02:23:50,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:50,153 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-11-30 02:23:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:23:50,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 02:23:50,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:50,168 INFO L225 Difference]: With dead ends: 30 [2020-11-30 02:23:50,168 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 02:23:50,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:50,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 02:23:50,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2020-11-30 02:23:50,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-30 02:23:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2020-11-30 02:23:50,232 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 4 [2020-11-30 02:23:50,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:50,234 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2020-11-30 02:23:50,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:23:50,234 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2020-11-30 02:23:50,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 02:23:50,235 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:50,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 02:23:50,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:23:50,237 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:23:50,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:50,241 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2020-11-30 02:23:50,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:50,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180416071] [2020-11-30 02:23:50,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:23:50,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180416071] [2020-11-30 02:23:50,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:50,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:23:50,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931463603] [2020-11-30 02:23:50,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:23:50,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:50,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:23:50,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:50,314 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand 3 states. [2020-11-30 02:23:50,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:50,357 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2020-11-30 02:23:50,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:23:50,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 02:23:50,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:50,359 INFO L225 Difference]: With dead ends: 21 [2020-11-30 02:23:50,360 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 02:23:50,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:50,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 02:23:50,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-30 02:23:50,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 02:23:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-11-30 02:23:50,365 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 4 [2020-11-30 02:23:50,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:50,365 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-11-30 02:23:50,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:23:50,365 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-11-30 02:23:50,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:23:50,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:50,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:23:50,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:23:50,366 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:23:50,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:50,369 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2020-11-30 02:23:50,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:50,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993928090] [2020-11-30 02:23:50,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:23:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:23:50,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993928090] [2020-11-30 02:23:50,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:23:50,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:23:50,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116915283] [2020-11-30 02:23:50,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:23:50,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:23:50,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:23:50,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:50,423 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 3 states. [2020-11-30 02:23:50,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:23:50,452 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2020-11-30 02:23:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:23:50,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 02:23:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:23:50,455 INFO L225 Difference]: With dead ends: 19 [2020-11-30 02:23:50,455 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 02:23:50,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:23:50,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 02:23:50,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 02:23:50,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 02:23:50,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-11-30 02:23:50,462 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 5 [2020-11-30 02:23:50,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:23:50,463 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-30 02:23:50,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:23:50,464 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-11-30 02:23:50,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:23:50,464 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:23:50,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:23:50,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:23:50,466 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:23:50,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:23:50,466 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2020-11-30 02:23:50,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:23:50,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950500383] [2020-11-30 02:23:50,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:23:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:23:50,519 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:23:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:23:50,530 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:23:50,546 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:23:50,546 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:23:50,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:23:50,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:23:50 BoogieIcfgContainer [2020-11-30 02:23:50,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:23:50,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:23:50,566 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:23:50,567 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:23:50,567 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:23:49" (3/4) ... [2020-11-30 02:23:50,569 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 02:23:50,607 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6d036213-3287-422d-b049-80ac6567e3a0/bin/utaipan/witness.graphml [2020-11-30 02:23:50,608 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:23:50,610 INFO L168 Benchmark]: Toolchain (without parser) took 1776.07 ms. Allocated memory is still 96.5 MB. Free memory was 77.6 MB in the beginning and 57.0 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:50,611 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 77.6 MB. Free memory is still 53.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:23:50,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.85 ms. Allocated memory is still 96.5 MB. Free memory was 77.2 MB in the beginning and 68.6 MB in the end (delta: 8.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:50,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.02 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 67.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:50,613 INFO L168 Benchmark]: Boogie Preprocessor took 29.11 ms. Allocated memory is still 96.5 MB. Free memory was 67.4 MB in the beginning and 66.5 MB in the end (delta: 971.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:23:50,614 INFO L168 Benchmark]: RCFGBuilder took 517.69 ms. Allocated memory is still 96.5 MB. Free memory was 66.5 MB in the beginning and 55.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:50,615 INFO L168 Benchmark]: TraceAbstraction took 833.93 ms. Allocated memory is still 96.5 MB. Free memory was 54.6 MB in the beginning and 58.6 MB in the end (delta: -4.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:23:50,616 INFO L168 Benchmark]: Witness Printer took 41.89 ms. Allocated memory is still 96.5 MB. Free memory was 58.6 MB in the beginning and 57.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:23:50,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 77.6 MB. Free memory is still 53.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.85 ms. Allocated memory is still 96.5 MB. Free memory was 77.2 MB in the beginning and 68.6 MB in the end (delta: 8.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.02 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 67.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.11 ms. Allocated memory is still 96.5 MB. Free memory was 67.4 MB in the beginning and 66.5 MB in the end (delta: 971.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 517.69 ms. Allocated memory is still 96.5 MB. Free memory was 66.5 MB in the beginning and 55.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 833.93 ms. Allocated memory is still 96.5 MB. Free memory was 54.6 MB in the beginning and 58.6 MB in the end (delta: -4.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 41.89 ms. Allocated memory is still 96.5 MB. Free memory was 58.6 MB in the beginning and 57.0 MB in the end (delta: 1.5 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: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y, z; [L16] x = __VERIFIER_nondet_int() [L17] y = __VERIFIER_nondet_int() [L18] z = __VERIFIER_nondet_int() [L20] COND TRUE x > 0 && y > 0 && z > 0 [L21] COND TRUE y > x [L22] y = z [L23] x = __VERIFIER_nondet_int() [L24] x - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 26 SDslu, 11 SDs, 0 SdLazy, 29 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 82 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...