./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum_array_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_df439e1a-c2b8-4c21-9d27-5d2b8642f9ad/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_df439e1a-c2b8-4c21-9d27-5d2b8642f9ad/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_df439e1a-c2b8-4c21-9d27-5d2b8642f9ad/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_df439e1a-c2b8-4c21-9d27-5d2b8642f9ad/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum_array_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_df439e1a-c2b8-4c21-9d27-5d2b8642f9ad/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_df439e1a-c2b8-4c21-9d27-5d2b8642f9ad/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 d03898b2adab3b021eca92ab7fbddac81b7b0464 ....................................................................................................................................................................................................................................................................................................................................................... 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 16:11:38,533 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 16:11:38,534 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 16:11:38,540 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 16:11:38,540 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 16:11:38,540 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 16:11:38,541 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 16:11:38,542 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 16:11:38,543 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 16:11:38,543 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 16:11:38,544 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 16:11:38,544 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 16:11:38,545 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 16:11:38,545 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 16:11:38,546 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 16:11:38,546 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 16:11:38,547 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 16:11:38,548 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 16:11:38,549 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 16:11:38,550 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 16:11:38,550 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 16:11:38,551 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 16:11:38,552 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 16:11:38,552 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 16:11:38,552 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 16:11:38,553 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 16:11:38,553 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 16:11:38,554 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 16:11:38,554 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 16:11:38,555 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 16:11:38,555 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 16:11:38,555 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 16:11:38,555 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 16:11:38,555 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 16:11:38,556 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 16:11:38,556 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 16:11:38,557 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_df439e1a-c2b8-4c21-9d27-5d2b8642f9ad/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 16:11:38,564 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 16:11:38,564 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 16:11:38,565 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 16:11:38,565 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 16:11:38,565 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 16:11:38,565 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 16:11:38,565 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 16:11:38,565 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 16:11:38,565 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 16:11:38,565 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 16:11:38,565 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 16:11:38,566 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 16:11:38,566 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 16:11:38,566 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 16:11:38,566 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 16:11:38,566 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 16:11:38,566 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 16:11:38,566 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 16:11:38,567 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 16:11:38,567 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 16:11:38,567 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 16:11:38,567 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 16:11:38,567 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 16:11:38,567 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 16:11:38,567 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 16:11:38,567 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 16:11:38,567 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 16:11:38,567 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 16:11:38,567 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 16:11:38,568 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 16:11:38,568 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 16:11:38,568 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 16:11:38,568 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 16:11:38,568 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 16:11:38,568 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 16:11:38,568 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 16:11:38,568 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_df439e1a-c2b8-4c21-9d27-5d2b8642f9ad/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 -> d03898b2adab3b021eca92ab7fbddac81b7b0464 [2018-12-09 16:11:38,586 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 16:11:38,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 16:11:38,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 16:11:38,598 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 16:11:38,598 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 16:11:38,598 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_df439e1a-c2b8-4c21-9d27-5d2b8642f9ad/bin-2019/utaipan/../../sv-benchmarks/c/loops/sum_array_false-unreach-call.i [2018-12-09 16:11:38,636 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_df439e1a-c2b8-4c21-9d27-5d2b8642f9ad/bin-2019/utaipan/data/9de3aa973/9671908fa1394257826bab0cf694230c/FLAG5e340fd0f [2018-12-09 16:11:38,984 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 16:11:38,984 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_df439e1a-c2b8-4c21-9d27-5d2b8642f9ad/sv-benchmarks/c/loops/sum_array_false-unreach-call.i [2018-12-09 16:11:38,988 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_df439e1a-c2b8-4c21-9d27-5d2b8642f9ad/bin-2019/utaipan/data/9de3aa973/9671908fa1394257826bab0cf694230c/FLAG5e340fd0f [2018-12-09 16:11:39,385 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_df439e1a-c2b8-4c21-9d27-5d2b8642f9ad/bin-2019/utaipan/data/9de3aa973/9671908fa1394257826bab0cf694230c [2018-12-09 16:11:39,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 16:11:39,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 16:11:39,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 16:11:39,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 16:11:39,402 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 16:11:39,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:11:39" (1/1) ... [2018-12-09 16:11:39,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d10e54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:11:39, skipping insertion in model container [2018-12-09 16:11:39,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:11:39" (1/1) ... [2018-12-09 16:11:39,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 16:11:39,425 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 16:11:39,513 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:11:39,515 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 16:11:39,529 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:11:39,539 INFO L195 MainTranslator]: Completed translation [2018-12-09 16:11:39,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:11:39 WrapperNode [2018-12-09 16:11:39,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 16:11:39,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 16:11:39,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 16:11:39,540 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 16:11:39,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:11:39" (1/1) ... [2018-12-09 16:11:39,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:11:39" (1/1) ... [2018-12-09 16:11:39,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 16:11:39,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 16:11:39,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 16:11:39,554 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 16:11:39,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:11:39" (1/1) ... [2018-12-09 16:11:39,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:11:39" (1/1) ... [2018-12-09 16:11:39,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:11:39" (1/1) ... [2018-12-09 16:11:39,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:11:39" (1/1) ... [2018-12-09 16:11:39,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:11:39" (1/1) ... [2018-12-09 16:11:39,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:11:39" (1/1) ... [2018-12-09 16:11:39,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:11:39" (1/1) ... [2018-12-09 16:11:39,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 16:11:39,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 16:11:39,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 16:11:39,599 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 16:11:39,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:11:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df439e1a-c2b8-4c21-9d27-5d2b8642f9ad/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 16:11:39,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 16:11:39,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 16:11:39,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 16:11:39,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 16:11:39,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 16:11:39,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 16:11:39,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 16:11:39,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 16:11:39,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 16:11:39,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 16:11:39,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 16:11:39,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 16:11:39,776 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 16:11:39,776 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 16:11:39,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:11:39 BoogieIcfgContainer [2018-12-09 16:11:39,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 16:11:39,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 16:11:39,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 16:11:39,779 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 16:11:39,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:11:39" (1/3) ... [2018-12-09 16:11:39,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee25b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:11:39, skipping insertion in model container [2018-12-09 16:11:39,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:11:39" (2/3) ... [2018-12-09 16:11:39,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee25b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:11:39, skipping insertion in model container [2018-12-09 16:11:39,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:11:39" (3/3) ... [2018-12-09 16:11:39,781 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array_false-unreach-call.i [2018-12-09 16:11:39,788 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 16:11:39,793 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 16:11:39,803 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 16:11:39,822 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 16:11:39,822 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 16:11:39,822 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 16:11:39,822 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 16:11:39,822 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 16:11:39,823 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 16:11:39,823 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 16:11:39,823 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 16:11:39,832 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-12-09 16:11:39,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 16:11:39,835 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:11:39,835 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:11:39,837 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:11:39,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:11:39,840 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2018-12-09 16:11:39,841 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:11:39,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:11:39,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:11:39,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:11:39,871 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:11:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:11:39,919 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 16:11:39,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:11:39,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 16:11:39,921 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:11:39,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 16:11:39,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 16:11:39,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 16:11:39,932 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2018-12-09 16:11:39,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:11:39,944 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2018-12-09 16:11:39,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 16:11:39,945 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-12-09 16:11:39,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:11:39,949 INFO L225 Difference]: With dead ends: 52 [2018-12-09 16:11:39,949 INFO L226 Difference]: Without dead ends: 25 [2018-12-09 16:11:39,951 INFO L631 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 [2018-12-09 16:11:39,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-12-09 16:11:39,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-12-09 16:11:39,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-09 16:11:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-12-09 16:11:39,972 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2018-12-09 16:11:39,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:11:39,972 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-12-09 16:11:39,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 16:11:39,972 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-12-09 16:11:39,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 16:11:39,972 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:11:39,972 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:11:39,973 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:11:39,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:11:39,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1687882214, now seen corresponding path program 1 times [2018-12-09 16:11:39,973 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:11:39,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:11:39,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:11:39,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:11:39,974 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:11:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:11:40,031 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 16:11:40,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:11:40,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 16:11:40,032 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:11:40,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 16:11:40,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 16:11:40,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 16:11:40,034 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2018-12-09 16:11:40,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:11:40,093 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2018-12-09 16:11:40,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 16:11:40,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-12-09 16:11:40,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:11:40,095 INFO L225 Difference]: With dead ends: 57 [2018-12-09 16:11:40,095 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 16:11:40,096 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 16:11:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 16:11:40,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2018-12-09 16:11:40,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-09 16:11:40,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-12-09 16:11:40,101 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2018-12-09 16:11:40,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:11:40,102 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-12-09 16:11:40,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 16:11:40,102 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-12-09 16:11:40,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 16:11:40,102 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:11:40,102 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, 1, 1, 1] [2018-12-09 16:11:40,102 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:11:40,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:11:40,102 INFO L82 PathProgramCache]: Analyzing trace with hash -825329612, now seen corresponding path program 1 times [2018-12-09 16:11:40,103 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:11:40,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:11:40,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:11:40,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:11:40,103 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:11:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:11:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:11:40,198 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 16:11:40,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:11:40 BoogieIcfgContainer [2018-12-09 16:11:40,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 16:11:40,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 16:11:40,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 16:11:40,217 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 16:11:40,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:11:39" (3/4) ... [2018-12-09 16:11:40,219 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 16:11:40,247 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_df439e1a-c2b8-4c21-9d27-5d2b8642f9ad/bin-2019/utaipan/witness.graphml [2018-12-09 16:11:40,247 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 16:11:40,247 INFO L168 Benchmark]: Toolchain (without parser) took 855.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 957.8 MB in the beginning and 1.0 GB in the end (delta: -83.8 MB). Peak memory consumption was 44.2 MB. Max. memory is 11.5 GB. [2018-12-09 16:11:40,248 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:11:40,249 INFO L168 Benchmark]: CACSL2BoogieTranslator took 144.18 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 16:11:40,249 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.67 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:11:40,249 INFO L168 Benchmark]: Boogie Preprocessor took 44.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-09 16:11:40,249 INFO L168 Benchmark]: RCFGBuilder took 177.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2018-12-09 16:11:40,250 INFO L168 Benchmark]: TraceAbstraction took 439.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 57.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 11.5 GB. [2018-12-09 16:11:40,250 INFO L168 Benchmark]: Witness Printer took 29.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:11:40,251 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 144.18 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.67 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 177.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 439.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 57.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 11.5 GB. * Witness Printer took 29.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 VAL [A={6:0}, B={9:0}, C={7:0}, i=0, M=1] [L18] COND TRUE i