./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test22_false-unreach-call.c --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_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/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 54c9c3f123e280a35d761deadfd537de0a28f053 ................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2018-12-02 09:24:12,814 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 09:24:12,815 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 09:24:12,821 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 09:24:12,821 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 09:24:12,822 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 09:24:12,822 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 09:24:12,823 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 09:24:12,824 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 09:24:12,824 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 09:24:12,825 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 09:24:12,825 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 09:24:12,825 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 09:24:12,826 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 09:24:12,826 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 09:24:12,827 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 09:24:12,827 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 09:24:12,828 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 09:24:12,829 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 09:24:12,830 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 09:24:12,830 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 09:24:12,831 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 09:24:12,832 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 09:24:12,832 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 09:24:12,832 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 09:24:12,833 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 09:24:12,833 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 09:24:12,833 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 09:24:12,834 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 09:24:12,834 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 09:24:12,834 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 09:24:12,835 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 09:24:12,835 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 09:24:12,835 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 09:24:12,835 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 09:24:12,836 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 09:24:12,836 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 09:24:12,843 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 09:24:12,843 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 09:24:12,843 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 09:24:12,843 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 09:24:12,844 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 09:24:12,844 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 09:24:12,844 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 09:24:12,844 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 09:24:12,844 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 09:24:12,844 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 09:24:12,844 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 09:24:12,844 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 09:24:12,844 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 09:24:12,845 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 09:24:12,845 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 09:24:12,845 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 09:24:12,845 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 09:24:12,845 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 09:24:12,845 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 09:24:12,845 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 09:24:12,845 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 09:24:12,845 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 09:24:12,845 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 09:24:12,845 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 09:24:12,846 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 09:24:12,846 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 09:24:12,846 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 09:24:12,846 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 09:24:12,846 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 09:24:12,846 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 09:24:12,846 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 09:24:12,846 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 09:24:12,846 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 09:24:12,846 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 09:24:12,846 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 09:24:12,847 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 09:24:12,847 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_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/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 -> 54c9c3f123e280a35d761deadfd537de0a28f053 [2018-12-02 09:24:12,863 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 09:24:12,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 09:24:12,872 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 09:24:12,873 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 09:24:12,873 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 09:24:12,873 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/test22_false-unreach-call.c [2018-12-02 09:24:12,907 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/bin-2019/utaipan/data/fe19e0027/2a12fd336b184017b8072f081b079d61/FLAG18fadb7b7 [2018-12-02 09:24:13,291 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 09:24:13,291 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/sv-benchmarks/c/ldv-regression/test22_false-unreach-call.c [2018-12-02 09:24:13,295 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/bin-2019/utaipan/data/fe19e0027/2a12fd336b184017b8072f081b079d61/FLAG18fadb7b7 [2018-12-02 09:24:13,303 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/bin-2019/utaipan/data/fe19e0027/2a12fd336b184017b8072f081b079d61 [2018-12-02 09:24:13,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 09:24:13,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 09:24:13,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 09:24:13,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 09:24:13,308 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 09:24:13,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:24:13" (1/1) ... [2018-12-02 09:24:13,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e9f86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:24:13, skipping insertion in model container [2018-12-02 09:24:13,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:24:13" (1/1) ... [2018-12-02 09:24:13,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 09:24:13,329 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 09:24:13,420 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 09:24:13,426 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 09:24:13,436 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 09:24:13,445 INFO L195 MainTranslator]: Completed translation [2018-12-02 09:24:13,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:24:13 WrapperNode [2018-12-02 09:24:13,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 09:24:13,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 09:24:13,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 09:24:13,446 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 09:24:13,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:24:13" (1/1) ... [2018-12-02 09:24:13,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:24:13" (1/1) ... [2018-12-02 09:24:13,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 09:24:13,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 09:24:13,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 09:24:13,466 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 09:24:13,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:24:13" (1/1) ... [2018-12-02 09:24:13,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:24:13" (1/1) ... [2018-12-02 09:24:13,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:24:13" (1/1) ... [2018-12-02 09:24:13,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:24:13" (1/1) ... [2018-12-02 09:24:13,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:24:13" (1/1) ... [2018-12-02 09:24:13,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:24:13" (1/1) ... [2018-12-02 09:24:13,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:24:13" (1/1) ... [2018-12-02 09:24:13,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 09:24:13,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 09:24:13,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 09:24:13,517 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 09:24:13,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:24:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/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 [2018-12-02 09:24:13,549 INFO L130 BoogieDeclarations]: Found specification of procedure init [2018-12-02 09:24:13,549 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2018-12-02 09:24:13,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 09:24:13,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 09:24:13,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-02 09:24:13,550 INFO L130 BoogieDeclarations]: Found specification of procedure check [2018-12-02 09:24:13,550 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2018-12-02 09:24:13,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 09:24:13,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 09:24:13,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 09:24:13,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 09:24:13,551 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2018-12-02 09:24:13,551 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2018-12-02 09:24:13,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 09:24:13,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 09:24:13,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 09:24:13,718 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 09:24:13,718 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 09:24:13,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:24:13 BoogieIcfgContainer [2018-12-02 09:24:13,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 09:24:13,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 09:24:13,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 09:24:13,722 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 09:24:13,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:24:13" (1/3) ... [2018-12-02 09:24:13,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d39ad31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:24:13, skipping insertion in model container [2018-12-02 09:24:13,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:24:13" (2/3) ... [2018-12-02 09:24:13,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d39ad31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:24:13, skipping insertion in model container [2018-12-02 09:24:13,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:24:13" (3/3) ... [2018-12-02 09:24:13,724 INFO L112 eAbstractionObserver]: Analyzing ICFG test22_false-unreach-call.c [2018-12-02 09:24:13,732 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 09:24:13,738 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 09:24:13,752 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 09:24:13,771 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 09:24:13,771 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 09:24:13,771 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 09:24:13,772 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 09:24:13,772 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 09:24:13,772 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 09:24:13,772 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 09:24:13,772 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 09:24:13,782 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-12-02 09:24:13,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 09:24:13,786 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:24:13,787 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:24:13,788 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:24:13,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:24:13,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1838243936, now seen corresponding path program 1 times [2018-12-02 09:24:13,793 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:24:13,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:24:13,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:24:13,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:24:13,827 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:24:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:24:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-12-02 09:24:13,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:24:13,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 09:24:13,912 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:24:13,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 09:24:13,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 09:24:13,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 09:24:13,923 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2018-12-02 09:24:13,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:24:13,935 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2018-12-02 09:24:13,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 09:24:13,936 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2018-12-02 09:24:13,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:24:13,941 INFO L225 Difference]: With dead ends: 49 [2018-12-02 09:24:13,941 INFO L226 Difference]: Without dead ends: 31 [2018-12-02 09:24:13,943 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 [2018-12-02 09:24:13,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-02 09:24:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-12-02 09:24:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-02 09:24:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2018-12-02 09:24:13,967 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2018-12-02 09:24:13,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:24:13,968 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2018-12-02 09:24:13,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 09:24:13,968 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2018-12-02 09:24:13,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-02 09:24:13,970 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:24:13,970 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:24:13,970 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:24:13,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:24:13,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1291679579, now seen corresponding path program 1 times [2018-12-02 09:24:13,970 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:24:13,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:24:13,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:24:13,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:24:13,971 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:24:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:24:14,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 09:24:14,110 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 09:24:14,110 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 09:24:14,111 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 39 with the following transitions: [2018-12-02 09:24:14,112 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [6], [10], [11], [17], [19], [21], [24], [30], [35], [38], [45], [48], [55], [58], [59], [60], [61], [62], [64], [65], [66], [67], [68], [69], [70], [71], [72], [73] [2018-12-02 09:24:14,133 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 09:24:14,134 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 09:24:14,259 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 09:24:14,260 INFO L272 AbstractInterpreter]: Visited 32 different actions 38 times. Never merged. Never widened. Performed 306 root evaluator evaluations with a maximum evaluation depth of 5. Performed 306 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Never found a fixpoint. Largest state had 39 variables. [2018-12-02 09:24:14,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:24:14,266 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 09:24:14,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 09:24:14,266 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/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 [2018-12-02 09:24:14,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:24:14,273 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 09:24:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:24:14,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:24:14,475 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-12-02 09:24:14,477 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 13 treesize of output 9 [2018-12-02 09:24:14,479 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:24:14,480 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:24:14,483 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:24:14,483 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:5 [2018-12-02 09:24:14,501 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 09:24:14,502 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 09:24:14,542 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 18 [2018-12-02 09:24:14,544 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 13 treesize of output 11 [2018-12-02 09:24:14,545 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:24:14,551 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 09:24:14,552 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 09:24:14,552 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-12-02 09:24:14,553 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 09:24:14,556 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 09:24:14,560 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 09:24:14,560 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:13, output treesize:7 [2018-12-02 09:24:14,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-02 09:24:14,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-02 09:24:14,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 13] total 30 [2018-12-02 09:24:14,871 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 09:24:14,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-02 09:24:14,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-02 09:24:14,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2018-12-02 09:24:14,872 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 20 states. [2018-12-02 09:24:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:24:15,187 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2018-12-02 09:24:15,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 09:24:15,187 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-12-02 09:24:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:24:15,189 INFO L225 Difference]: With dead ends: 69 [2018-12-02 09:24:15,189 INFO L226 Difference]: Without dead ends: 61 [2018-12-02 09:24:15,189 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2018-12-02 09:24:15,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-12-02 09:24:15,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2018-12-02 09:24:15,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 09:24:15,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2018-12-02 09:24:15,196 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 38 [2018-12-02 09:24:15,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:24:15,196 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2018-12-02 09:24:15,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-02 09:24:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2018-12-02 09:24:15,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-02 09:24:15,197 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:24:15,197 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:24:15,197 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:24:15,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:24:15,197 INFO L82 PathProgramCache]: Analyzing trace with hash 270611225, now seen corresponding path program 1 times [2018-12-02 09:24:15,197 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:24:15,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:24:15,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:24:15,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:24:15,198 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:24:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 09:24:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 09:24:15,241 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 09:24:15,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 09:24:15 BoogieIcfgContainer [2018-12-02 09:24:15,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 09:24:15,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 09:24:15,264 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 09:24:15,264 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 09:24:15,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:24:13" (3/4) ... [2018-12-02 09:24:15,266 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 09:24:15,295 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6dc0b8ac-fb4c-4e75-8967-f2287bc0365e/bin-2019/utaipan/witness.graphml [2018-12-02 09:24:15,295 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 09:24:15,295 INFO L168 Benchmark]: Toolchain (without parser) took 1990.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.0 MB). Free memory was 961.4 MB in the beginning and 1.0 GB in the end (delta: -42.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 11.5 GB. [2018-12-02 09:24:15,296 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 09:24:15,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.49 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 09:24:15,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.78 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 945.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 09:24:15,297 INFO L168 Benchmark]: Boogie Preprocessor took 50.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.0 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -126.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-02 09:24:15,297 INFO L168 Benchmark]: RCFGBuilder took 201.92 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-12-02 09:24:15,297 INFO L168 Benchmark]: TraceAbstraction took 1544.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 11.5 GB. [2018-12-02 09:24:15,298 INFO L168 Benchmark]: Witness Printer took 30.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2018-12-02 09:24:15,299 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.49 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 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 19.78 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 945.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 76.0 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -126.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 201.92 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1544.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 11.5 GB. * Witness Printer took 30.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; VAL [\old(d1)=19, \old(d1)=25, \old(d2)=24, \old(d2)=21, d1={20:0}, d2={22:0}] [L32] CALL init() VAL [d1={20:0}, d2={22:0}] [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L32] RET init() VAL [d1={20:0}, d2={22:0}] [L33] CALL, EXPR get_dummy() VAL [d1={20:0}, d2={22:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={20:0}, d1={20:0}, d2={22:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={20:0}, d2={22:0}, get_dummy()={20:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() VAL [d1={20:0}, d2={22:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={20:0}, d1={20:0}, d2={22:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={20:0}, d2={22:0}, get_dummy()={20:0}, pd1={20:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() VAL [d1={20:0}, d2={22:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=0, __VERIFIER_nondet_bool() ? &d1 : &d2={22:0}, d1={20:0}, d2={22:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={20:0}, d2={22:0}, get_dummy()={22:0}, pd1={20:0}, pd2={20:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 VAL [(*pd2).a=6, d1={20:0}, d2={22:0}, i=0, pd1={20:0}, pd1 != 0 && pd1 == pd2 && (*pd2).a > 0=1, pd2={20:0}, pd3={22:0}] [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) VAL [\read(*pa)=6, d1={20:0}, d2={22:0}, i=7, pa={20:0}, pd1={20:0}, pd2={20:0}, pd3={22:0}] [L38] COND FALSE !(i < *pa) [L41] CALL, EXPR check(pd2, i) VAL [\old(i)=7, d1={20:0}, d2={22:0}, s1={20:0}] [L27] EXPR s1->a [L27] return s1->a == i; [L41] RET, EXPR check(pd2, i) VAL [check(pd2, i)=0, d1={20:0}, d2={22:0}, i=7, pa={20:0}, pd1={20:0}, pd2={20:0}, pd3={22:0}] [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() VAL [d1={20:0}, d2={22:0}, i=7, pa={20:0}, pd1={20:0}, pd2={20:0}, pd3={22:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. UNSAFE Result, 1.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 65 SDslu, 367 SDs, 0 SdLazy, 337 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 27936 SizeOfPredicates, 17 NumberOfNonLiveVariables, 180 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 36/48 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...