./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/skippedu_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/skippedu_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 69a8cdfb90da21c880e2ea8c68ae8d9efb957756 .............................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.23-635dfa2 [2018-12-09 19:15:52,104 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:15:52,106 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:15:52,113 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:15:52,113 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:15:52,114 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:15:52,115 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:15:52,116 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:15:52,117 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:15:52,118 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:15:52,119 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:15:52,119 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:15:52,120 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:15:52,121 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:15:52,121 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:15:52,122 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:15:52,123 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:15:52,124 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:15:52,125 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:15:52,127 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:15:52,127 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:15:52,128 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:15:52,130 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:15:52,130 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:15:52,130 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:15:52,131 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:15:52,132 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:15:52,132 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:15:52,133 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:15:52,133 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:15:52,134 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:15:52,134 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:15:52,134 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:15:52,134 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:15:52,135 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:15:52,135 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:15:52,135 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 19:15:52,143 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:15:52,143 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:15:52,144 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:15:52,144 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:15:52,144 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:15:52,144 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:15:52,144 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:15:52,144 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 19:15:52,145 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:15:52,145 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:15:52,145 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 19:15:52,145 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 19:15:52,145 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:15:52,146 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:15:52,146 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:15:52,146 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 19:15:52,146 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:15:52,146 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:15:52,146 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:15:52,146 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:15:52,146 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:15:52,147 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:15:52,147 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:15:52,147 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:15:52,147 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:15:52,147 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:15:52,147 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:15:52,147 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:15:52,147 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:15:52,148 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:15:52,148 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:15:52,148 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:15:52,148 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 19:15:52,148 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:15:52,148 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 19:15:52,148 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 19:15:52,149 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/bin-2019/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(__VERIFIER_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 -> 69a8cdfb90da21c880e2ea8c68ae8d9efb957756 [2018-12-09 19:15:52,166 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:15:52,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:15:52,175 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:15:52,176 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:15:52,177 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:15:52,177 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/bin-2019/utaipan/../../sv-benchmarks/c/array-tiling/skippedu_false-unreach-call.i [2018-12-09 19:15:52,218 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/bin-2019/utaipan/data/c45266dd0/7c090230321e4a06b8c5c96a9f07cb70/FLAGb31fd019d [2018-12-09 19:15:52,636 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:15:52,636 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/sv-benchmarks/c/array-tiling/skippedu_false-unreach-call.i [2018-12-09 19:15:52,640 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/bin-2019/utaipan/data/c45266dd0/7c090230321e4a06b8c5c96a9f07cb70/FLAGb31fd019d [2018-12-09 19:15:52,647 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/bin-2019/utaipan/data/c45266dd0/7c090230321e4a06b8c5c96a9f07cb70 [2018-12-09 19:15:52,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:15:52,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:15:52,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:15:52,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:15:52,652 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:15:52,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:15:52" (1/1) ... [2018-12-09 19:15:52,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34d648fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:15:52, skipping insertion in model container [2018-12-09 19:15:52,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:15:52" (1/1) ... [2018-12-09 19:15:52,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:15:52,668 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:15:52,758 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:15:52,760 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:15:52,773 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:15:52,783 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:15:52,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:15:52 WrapperNode [2018-12-09 19:15:52,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:15:52,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:15:52,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:15:52,784 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:15:52,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:15:52" (1/1) ... [2018-12-09 19:15:52,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:15:52" (1/1) ... [2018-12-09 19:15:52,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:15:52,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:15:52,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:15:52,799 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:15:52,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:15:52" (1/1) ... [2018-12-09 19:15:52,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:15:52" (1/1) ... [2018-12-09 19:15:52,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:15:52" (1/1) ... [2018-12-09 19:15:52,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:15:52" (1/1) ... [2018-12-09 19:15:52,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:15:52" (1/1) ... [2018-12-09 19:15:52,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:15:52" (1/1) ... [2018-12-09 19:15:52,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:15:52" (1/1) ... [2018-12-09 19:15:52,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:15:52,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:15:52,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:15:52,851 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:15:52,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:15:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/bin-2019/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 [2018-12-09 19:15:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 19:15:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 19:15:52,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 19:15:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 19:15:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:15:52,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:15:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 19:15:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 19:15:52,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 19:15:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 19:15:52,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 19:15:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 19:15:53,009 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:15:53,009 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 19:15:53,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:15:53 BoogieIcfgContainer [2018-12-09 19:15:53,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:15:53,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:15:53,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:15:53,013 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:15:53,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:15:52" (1/3) ... [2018-12-09 19:15:53,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1571cd86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:15:53, skipping insertion in model container [2018-12-09 19:15:53,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:15:52" (2/3) ... [2018-12-09 19:15:53,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1571cd86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:15:53, skipping insertion in model container [2018-12-09 19:15:53,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:15:53" (3/3) ... [2018-12-09 19:15:53,016 INFO L112 eAbstractionObserver]: Analyzing ICFG skippedu_false-unreach-call.i [2018-12-09 19:15:53,025 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:15:53,030 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 19:15:53,043 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 19:15:53,066 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:15:53,066 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:15:53,066 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:15:53,066 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:15:53,067 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:15:53,067 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:15:53,067 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:15:53,067 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:15:53,079 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-12-09 19:15:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-09 19:15:53,083 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:15:53,083 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:15:53,085 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:15:53,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:15:53,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1661916020, now seen corresponding path program 1 times [2018-12-09 19:15:53,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:15:53,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:15:53,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:15:53,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:15:53,125 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:15:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:15:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:15:53,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:15:53,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 19:15:53,246 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:15:53,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 19:15:53,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 19:15:53,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 19:15:53,257 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2018-12-09 19:15:53,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:15:53,310 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2018-12-09 19:15:53,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 19:15:53,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-12-09 19:15:53,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:15:53,316 INFO L225 Difference]: With dead ends: 57 [2018-12-09 19:15:53,316 INFO L226 Difference]: Without dead ends: 29 [2018-12-09 19:15:53,318 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 19:15:53,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-09 19:15:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2018-12-09 19:15:53,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-09 19:15:53,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-12-09 19:15:53,339 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 15 [2018-12-09 19:15:53,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:15:53,339 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-12-09 19:15:53,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 19:15:53,339 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-12-09 19:15:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 19:15:53,340 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:15:53,340 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:15:53,340 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:15:53,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:15:53,340 INFO L82 PathProgramCache]: Analyzing trace with hash 505215540, now seen corresponding path program 1 times [2018-12-09 19:15:53,340 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:15:53,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:15:53,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:15:53,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:15:53,341 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:15:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:15:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:15:53,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:15:53,592 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 19:15:53,592 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-12-09 19:15:53,593 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [8], [12], [18], [20], [23], [27], [32], [34], [38], [46], [60], [63], [65], [71], [72], [73], [75] [2018-12-09 19:15:53,612 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 19:15:53,613 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 19:15:53,777 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 19:15:53,778 INFO L272 AbstractInterpreter]: Visited 20 different actions 41 times. Merged at 6 different actions 18 times. Widened at 1 different actions 1 times. Performed 186 root evaluator evaluations with a maximum evaluation depth of 12. Performed 186 inverse root evaluator evaluations with a maximum inverse evaluation depth of 12. Found 4 fixpoints after 2 different actions. Largest state had 20 variables. [2018-12-09 19:15:53,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:15:53,783 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 19:15:53,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:15:53,783 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:15:53,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:15:53,789 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 19:15:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:15:53,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:15:53,862 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-12-09 19:15:53,864 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-09 19:15:53,864 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:15:53,866 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:15:53,868 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:15:53,869 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-12-09 19:15:53,884 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-12-09 19:15:53,886 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-12-09 19:15:53,887 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:15:53,888 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:15:53,898 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:15:53,899 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2018-12-09 19:15:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:15:53,925 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:15:53,969 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2018-12-09 19:15:53,978 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2018-12-09 19:15:53,978 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 19:15:53,980 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:15:53,981 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 19:15:53,981 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:5 [2018-12-09 19:15:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:15:54,011 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 19:15:54,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 20 [2018-12-09 19:15:54,011 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 19:15:54,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-09 19:15:54,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-09 19:15:54,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2018-12-09 19:15:54,012 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 16 states. [2018-12-09 19:15:54,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:15:54,283 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2018-12-09 19:15:54,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 19:15:54,283 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 20 [2018-12-09 19:15:54,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:15:54,285 INFO L225 Difference]: With dead ends: 56 [2018-12-09 19:15:54,285 INFO L226 Difference]: Without dead ends: 54 [2018-12-09 19:15:54,286 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2018-12-09 19:15:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-12-09 19:15:54,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2018-12-09 19:15:54,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-09 19:15:54,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-12-09 19:15:54,293 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 20 [2018-12-09 19:15:54,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:15:54,293 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-12-09 19:15:54,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-09 19:15:54,293 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-12-09 19:15:54,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 19:15:54,294 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:15:54,294 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:15:54,294 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:15:54,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:15:54,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1206280118, now seen corresponding path program 1 times [2018-12-09 19:15:54,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:15:54,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:15:54,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:15:54,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:15:54,295 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:15:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:15:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:15:54,328 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 19:15:54,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:15:54 BoogieIcfgContainer [2018-12-09 19:15:54,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:15:54,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:15:54,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:15:54,345 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:15:54,346 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:15:53" (3/4) ... [2018-12-09 19:15:54,347 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 19:15:54,373 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3af2f817-5076-43ff-8d4d-65a34a4a8a70/bin-2019/utaipan/witness.graphml [2018-12-09 19:15:54,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:15:54,373 INFO L168 Benchmark]: Toolchain (without parser) took 1724.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 963.4 MB in the beginning and 878.3 MB in the end (delta: 85.1 MB). Peak memory consumption was 204.6 MB. Max. memory is 11.5 GB. [2018-12-09 19:15:54,374 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:15:54,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 133.85 ms. Allocated memory is still 1.0 GB. Free memory was 963.4 MB in the beginning and 951.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-09 19:15:54,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.71 ms. Allocated memory is still 1.0 GB. Free memory is still 951.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:15:54,375 INFO L168 Benchmark]: Boogie Preprocessor took 51.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -159.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-09 19:15:54,375 INFO L168 Benchmark]: RCFGBuilder took 158.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:15:54,375 INFO L168 Benchmark]: TraceAbstraction took 1334.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 878.3 MB in the end (delta: 220.8 MB). Peak memory consumption was 220.8 MB. Max. memory is 11.5 GB. [2018-12-09 19:15:54,376 INFO L168 Benchmark]: Witness Printer took 27.52 ms. Allocated memory is still 1.1 GB. Free memory is still 878.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:15:54,377 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 133.85 ms. Allocated memory is still 1.0 GB. Free memory was 963.4 MB in the beginning and 951.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.71 ms. Allocated memory is still 1.0 GB. Free memory is still 951.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -159.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 158.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1334.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 878.3 MB in the end (delta: 220.8 MB). Peak memory consumption was 220.8 MB. Max. memory is 11.5 GB. * Witness Printer took 27.52 ms. Allocated memory is still 1.1 GB. Free memory is still 878.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L8] int SIZE; VAL [\old(SIZE)=10, SIZE=0] [L12] SIZE = __VERIFIER_nondet_int() [L13] COND TRUE SIZE > 1 [L15] int i; [L16] int a[SIZE]; VAL [\old(SIZE)=0, a={11:0}, SIZE=2] [L18] COND FALSE !(SIZE % 2 != 0) [L21] i = 1 VAL [\old(SIZE)=0, a={11:0}, i=1, SIZE=2] [L21] COND TRUE i <= SIZE/2 [L23] EXPR a[2*i-2] VAL [\old(SIZE)=0, a={11:0}, a[2*i-2]=1, i=1, SIZE=2] [L23] COND FALSE !(a[2*i-2] > i) [L27] EXPR a[2*i-1] VAL [\old(SIZE)=0, a={11:0}, a[2*i-1]=0, i=1, SIZE=2] [L27] COND FALSE !(a[2*i-1] > i) [L21] i++ VAL [\old(SIZE)=0, a={11:0}, i=2, SIZE=2] [L21] COND FALSE !(i <= SIZE/2) VAL [\old(SIZE)=0, a={11:0}, i=2, SIZE=2] [L33] i = 0 VAL [\old(SIZE)=0, a={11:0}, i=0, SIZE=2] [L33] COND TRUE i < SIZE [L35] EXPR a[i] VAL [\old(SIZE)=0, a={11:0}, a[i]=1, i=0, SIZE=2] [L35] CALL __VERIFIER_assert( a[i] <= i ) VAL [\old(cond)=0, \old(SIZE)=0, SIZE=2] [L5] COND TRUE !(cond) VAL [\old(cond)=0, \old(SIZE)=0, cond=0, SIZE=2] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(SIZE)=0, cond=0, SIZE=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. UNSAFE Result, 1.2s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 138 SDslu, 120 SDs, 0 SdLazy, 227 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 8253 SizeOfPredicates, 10 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...