./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.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_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/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 91f380cc586fc37a21f02c3c45ccd402d5300ed9 .................................................................................................................................................................................................................................................................................................................................................................... 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 13:00:19,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:00:19,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:00:19,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:00:19,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:00:19,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:00:19,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:00:19,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:00:19,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:00:19,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:00:19,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:00:19,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:00:19,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:00:19,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:00:19,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:00:19,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:00:19,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:00:19,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:00:19,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:00:19,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:00:19,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:00:19,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:00:19,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:00:19,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:00:19,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:00:19,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:00:19,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:00:19,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:00:19,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:00:19,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:00:19,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:00:19,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:00:19,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:00:19,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:00:19,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:00:19,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:00:19,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:00:19,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:00:19,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:00:19,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:00:19,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:00:19,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:00:19,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:00:19,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:00:19,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:00:19,520 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:00:19,520 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:00:19,520 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:00:19,520 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:00:19,521 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:00:19,521 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:00:19,521 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:00:19,522 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:00:19,522 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:00:19,522 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:00:19,522 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:00:19,523 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:00:19,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:00:19,524 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:00:19,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:00:19,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:00:19,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:00:19,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:00:19,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:00:19,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:00:19,526 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:00:19,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:00:19,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:00:19,527 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:00:19,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:00:19,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:00:19,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:00:19,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:00:19,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:00:19,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:00:19,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:00:19,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:00:19,529 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:00:19,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:00:19,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:00:19,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:00:19,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:00:19,531 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_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91f380cc586fc37a21f02c3c45ccd402d5300ed9 [2020-11-22 13:00:19,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:00:19,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:00:19,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:00:19,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:00:19,784 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:00:19,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c [2020-11-22 13:00:19,866 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/bin/utaipan/data/ece60670b/271c0565be0f48af9539f17d1fcfc048/FLAG6740cc4a8 [2020-11-22 13:00:20,353 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:00:20,354 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c [2020-11-22 13:00:20,360 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/bin/utaipan/data/ece60670b/271c0565be0f48af9539f17d1fcfc048/FLAG6740cc4a8 [2020-11-22 13:00:20,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/bin/utaipan/data/ece60670b/271c0565be0f48af9539f17d1fcfc048 [2020-11-22 13:00:20,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:00:20,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:00:20,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:00:20,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:00:20,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:00:20,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:00:20" (1/1) ... [2020-11-22 13:00:20,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473ab433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:20, skipping insertion in model container [2020-11-22 13:00:20,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:00:20" (1/1) ... [2020-11-22 13:00:20,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:00:20,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:00:21,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:00:21,044 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:00:21,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:00:21,079 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:00:21,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:21 WrapperNode [2020-11-22 13:00:21,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:00:21,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:00:21,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:00:21,081 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:00:21,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:21" (1/1) ... [2020-11-22 13:00:21,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:21" (1/1) ... [2020-11-22 13:00:21,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:00:21,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:00:21,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:00:21,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:00:21,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:21" (1/1) ... [2020-11-22 13:00:21,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:21" (1/1) ... [2020-11-22 13:00:21,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:21" (1/1) ... [2020-11-22 13:00:21,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:21" (1/1) ... [2020-11-22 13:00:21,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:21" (1/1) ... [2020-11-22 13:00:21,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:21" (1/1) ... [2020-11-22 13:00:21,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:21" (1/1) ... [2020-11-22 13:00:21,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:00:21,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:00:21,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:00:21,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:00:21,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/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 13:00:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:00:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:00:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:00:21,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:00:21,785 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:00:21,785 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-11-22 13:00:21,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:21 BoogieIcfgContainer [2020-11-22 13:00:21,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:00:21,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:00:21,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:00:21,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:00:21,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:00:20" (1/3) ... [2020-11-22 13:00:21,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29acac41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:00:21, skipping insertion in model container [2020-11-22 13:00:21,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:21" (2/3) ... [2020-11-22 13:00:21,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29acac41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:00:21, skipping insertion in model container [2020-11-22 13:00:21,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:21" (3/3) ... [2020-11-22 13:00:21,799 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound1.c [2020-11-22 13:00:21,811 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:00:21,815 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-22 13:00:21,827 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-22 13:00:21,859 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:00:21,859 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:00:21,859 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:00:21,859 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:00:21,859 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:00:21,859 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:00:21,860 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:00:21,860 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:00:21,870 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-11-22 13:00:21,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:00:21,874 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:21,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:00:21,875 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:21,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:21,881 INFO L82 PathProgramCache]: Analyzing trace with hash 96263755, now seen corresponding path program 1 times [2020-11-22 13:00:21,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:21,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29923452] [2020-11-22 13:00:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:22,010 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 13:00:22,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29923452] [2020-11-22 13:00:22,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:22,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:00:22,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137748524] [2020-11-22 13:00:22,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:00:22,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:22,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:00:22,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:00:22,032 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-11-22 13:00:22,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:22,047 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2020-11-22 13:00:22,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:00:22,048 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-22 13:00:22,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:22,056 INFO L225 Difference]: With dead ends: 33 [2020-11-22 13:00:22,056 INFO L226 Difference]: Without dead ends: 15 [2020-11-22 13:00:22,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:00:22,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-22 13:00:22,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-22 13:00:22,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-22 13:00:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-11-22 13:00:22,087 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2020-11-22 13:00:22,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:22,088 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-11-22 13:00:22,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:00:22,088 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-11-22 13:00:22,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:00:22,089 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:22,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:00:22,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:00:22,090 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:22,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:22,091 INFO L82 PathProgramCache]: Analyzing trace with hash 95558702, now seen corresponding path program 1 times [2020-11-22 13:00:22,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:22,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093082383] [2020-11-22 13:00:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:22,109 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:00:22,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947507842] [2020-11-22 13:00:22,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/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 13:00:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:22,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:00:22,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:00:22,256 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 13:00:22,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:00:22,280 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:00:22,579 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 13:00:22,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093082383] [2020-11-22 13:00:22,580 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:00:22,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947507842] [2020-11-22 13:00:22,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:22,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 13:00:22,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285313585] [2020-11-22 13:00:22,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:00:22,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:22,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:00:22,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:00:22,583 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-11-22 13:00:25,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:25,307 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-11-22 13:00:25,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 13:00:25,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-22 13:00:25,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:25,308 INFO L225 Difference]: With dead ends: 43 [2020-11-22 13:00:25,308 INFO L226 Difference]: Without dead ends: 32 [2020-11-22 13:00:25,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:00:25,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-22 13:00:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2020-11-22 13:00:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 13:00:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-11-22 13:00:25,319 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2020-11-22 13:00:25,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:25,323 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-11-22 13:00:25,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:00:25,323 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-11-22 13:00:25,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:00:25,324 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:25,324 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:25,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-22 13:00:25,553 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:25,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:25,554 INFO L82 PathProgramCache]: Analyzing trace with hash -846608266, now seen corresponding path program 1 times [2020-11-22 13:00:25,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:25,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651237455] [2020-11-22 13:00:25,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:25,567 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:00:25,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989834881] [2020-11-22 13:00:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/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 13:00:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:00:25,625 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:00:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:00:25,640 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:00:25,660 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:00:25,661 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:00:25,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:00:25,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:00:25 BoogieIcfgContainer [2020-11-22 13:00:25,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:00:25,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:00:25,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:00:25,911 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:00:25,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:21" (3/4) ... [2020-11-22 13:00:25,913 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:00:25,952 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c955e2b1-3bfc-45f9-bd2f-07d8a5f5fd1e/bin/utaipan/witness.graphml [2020-11-22 13:00:25,952 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:00:25,954 INFO L168 Benchmark]: Toolchain (without parser) took 5197.63 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 54.7 MB in the beginning and 67.2 MB in the end (delta: -12.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:25,955 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory is still 42.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:00:25,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.67 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 54.5 MB in the beginning and 88.0 MB in the end (delta: -33.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:25,956 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.42 ms. Allocated memory is still 111.1 MB. Free memory was 88.0 MB in the beginning and 86.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:25,957 INFO L168 Benchmark]: Boogie Preprocessor took 22.01 ms. Allocated memory is still 111.1 MB. Free memory was 86.7 MB in the beginning and 85.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:25,958 INFO L168 Benchmark]: RCFGBuilder took 648.83 ms. Allocated memory is still 111.1 MB. Free memory was 85.2 MB in the beginning and 68.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:25,959 INFO L168 Benchmark]: TraceAbstraction took 4121.66 ms. Allocated memory is still 111.1 MB. Free memory was 67.8 MB in the beginning and 69.3 MB in the end (delta: -1.5 MB). Peak memory consumption was 362.7 kB. Max. memory is 16.1 GB. [2020-11-22 13:00:25,959 INFO L168 Benchmark]: Witness Printer took 41.46 ms. Allocated memory is still 111.1 MB. Free memory was 69.3 MB in the beginning and 67.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:25,963 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory is still 42.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 316.67 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 54.5 MB in the beginning and 88.0 MB in the end (delta: -33.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.42 ms. Allocated memory is still 111.1 MB. Free memory was 88.0 MB in the beginning and 86.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.01 ms. Allocated memory is still 111.1 MB. Free memory was 86.7 MB in the beginning and 85.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 648.83 ms. Allocated memory is still 111.1 MB. Free memory was 85.2 MB in the beginning and 68.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4121.66 ms. Allocated memory is still 111.1 MB. Free memory was 67.8 MB in the beginning and 69.3 MB in the end (delta: -1.5 MB). Peak memory consumption was 362.7 kB. Max. memory is 16.1 GB. * Witness Printer took 41.46 ms. Allocated memory is still 111.1 MB. Free memory was 69.3 MB in the beginning and 67.2 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: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L7] COND FALSE !(!cond) [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [counter=0] [L28] EXPR counter++ VAL [counter=1] [L28] COND TRUE counter++<1 [L10] COND FALSE !(!(cond)) VAL [counter=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [counter=1] [L28] EXPR counter++ VAL [counter=2] [L28] COND FALSE !(counter++<1) [L10] COND FALSE !(!(cond)) VAL [counter=2] [L10] COND TRUE !(cond) VAL [counter=2] [L3] __assert_fail("0", "ps6-ll.c", 3, "reach_error") VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 22 SDslu, 28 SDs, 0 SdLazy, 26 SolverSat, 13 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=2, 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, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 368 SizeOfPredicates, 4 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 7 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...