./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.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_68db4487-5ff0-40c5-b7b9-cca3b17a0983/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_68db4487-5ff0-40c5-b7b9-cca3b17a0983/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_68db4487-5ff0-40c5-b7b9-cca3b17a0983/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_68db4487-5ff0-40c5-b7b9-cca3b17a0983/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_68db4487-5ff0-40c5-b7b9-cca3b17a0983/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_68db4487-5ff0-40c5-b7b9-cca3b17a0983/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7716826f9b443d6310df8de2d829a4d2f71b85a7 ......................................................................................................................................................................................................................................................................................................................................................................................................... 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 13:12:46,889 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 13:12:46,890 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 13:12:46,896 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 13:12:46,896 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 13:12:46,897 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 13:12:46,897 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 13:12:46,898 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 13:12:46,899 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 13:12:46,899 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 13:12:46,900 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 13:12:46,900 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 13:12:46,900 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 13:12:46,901 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 13:12:46,901 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 13:12:46,902 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 13:12:46,902 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 13:12:46,903 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 13:12:46,904 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 13:12:46,905 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 13:12:46,905 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 13:12:46,906 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 13:12:46,907 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 13:12:46,907 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 13:12:46,907 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 13:12:46,908 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 13:12:46,908 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 13:12:46,909 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 13:12:46,909 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 13:12:46,909 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 13:12:46,910 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 13:12:46,910 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 13:12:46,910 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 13:12:46,910 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 13:12:46,911 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 13:12:46,911 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 13:12:46,911 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_68db4487-5ff0-40c5-b7b9-cca3b17a0983/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-02 13:12:46,918 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 13:12:46,919 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 13:12:46,919 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 13:12:46,919 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 13:12:46,919 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 13:12:46,920 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 13:12:46,920 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 13:12:46,920 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 13:12:46,920 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 13:12:46,920 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 13:12:46,920 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 13:12:46,920 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 13:12:46,920 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 13:12:46,920 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 13:12:46,920 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 13:12:46,920 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 13:12:46,921 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 13:12:46,921 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 13:12:46,921 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 13:12:46,921 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 13:12:46,921 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 13:12:46,921 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 13:12:46,921 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 13:12:46,921 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 13:12:46,921 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 13:12:46,921 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 13:12:46,921 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 13:12:46,922 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 13:12:46,922 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 13:12:46,922 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 13:12:46,922 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_68db4487-5ff0-40c5-b7b9-cca3b17a0983/bin-2019/uautomizer 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 -> Automizer 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 -> 7716826f9b443d6310df8de2d829a4d2f71b85a7 [2018-12-02 13:12:46,940 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 13:12:46,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 13:12:46,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 13:12:46,953 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 13:12:46,954 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 13:12:46,954 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_68db4487-5ff0-40c5-b7b9-cca3b17a0983/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.i [2018-12-02 13:12:46,999 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_68db4487-5ff0-40c5-b7b9-cca3b17a0983/bin-2019/uautomizer/data/ee7b7851a/8641d3472b6b40f588d30e728ad4b5cf/FLAG385ca1c92 [2018-12-02 13:12:47,296 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 13:12:47,296 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_68db4487-5ff0-40c5-b7b9-cca3b17a0983/sv-benchmarks/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.i [2018-12-02 13:12:47,302 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_68db4487-5ff0-40c5-b7b9-cca3b17a0983/bin-2019/uautomizer/data/ee7b7851a/8641d3472b6b40f588d30e728ad4b5cf/FLAG385ca1c92 [2018-12-02 13:12:47,311 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_68db4487-5ff0-40c5-b7b9-cca3b17a0983/bin-2019/uautomizer/data/ee7b7851a/8641d3472b6b40f588d30e728ad4b5cf [2018-12-02 13:12:47,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 13:12:47,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 13:12:47,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 13:12:47,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 13:12:47,316 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 13:12:47,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:12:47" (1/1) ... [2018-12-02 13:12:47,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19197ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:47, skipping insertion in model container [2018-12-02 13:12:47,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:12:47" (1/1) ... [2018-12-02 13:12:47,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 13:12:47,341 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 13:12:47,482 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 13:12:47,522 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 13:12:47,544 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 13:12:47,565 INFO L195 MainTranslator]: Completed translation [2018-12-02 13:12:47,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:47 WrapperNode [2018-12-02 13:12:47,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 13:12:47,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 13:12:47,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 13:12:47,566 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 13:12:47,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:47" (1/1) ... [2018-12-02 13:12:47,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:47" (1/1) ... [2018-12-02 13:12:47,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 13:12:47,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 13:12:47,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 13:12:47,582 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 13:12:47,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:47" (1/1) ... [2018-12-02 13:12:47,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:47" (1/1) ... [2018-12-02 13:12:47,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:47" (1/1) ... [2018-12-02 13:12:47,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:47" (1/1) ... [2018-12-02 13:12:47,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:47" (1/1) ... [2018-12-02 13:12:47,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:47" (1/1) ... [2018-12-02 13:12:47,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:47" (1/1) ... [2018-12-02 13:12:47,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 13:12:47,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 13:12:47,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 13:12:47,598 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 13:12:47,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_68db4487-5ff0-40c5-b7b9-cca3b17a0983/bin-2019/uautomizer/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 13:12:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-02 13:12:47,628 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-02 13:12:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 13:12:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 13:12:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 13:12:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 13:12:47,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 13:12:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 13:12:47,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 13:12:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-02 13:12:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-02 13:12:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 13:12:47,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 13:12:47,754 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 13:12:47,754 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 13:12:47,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:12:47 BoogieIcfgContainer [2018-12-02 13:12:47,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 13:12:47,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 13:12:47,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 13:12:47,756 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 13:12:47,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:12:47" (1/3) ... [2018-12-02 13:12:47,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38afe97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:12:47, skipping insertion in model container [2018-12-02 13:12:47,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:12:47" (2/3) ... [2018-12-02 13:12:47,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38afe97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:12:47, skipping insertion in model container [2018-12-02 13:12:47,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:12:47" (3/3) ... [2018-12-02 13:12:47,758 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_false-unreach-call_false-valid-memcleanup.i [2018-12-02 13:12:47,764 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 13:12:47,767 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 13:12:47,776 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 13:12:47,792 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 13:12:47,792 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 13:12:47,792 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 13:12:47,792 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 13:12:47,792 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 13:12:47,792 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 13:12:47,792 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 13:12:47,793 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 13:12:47,793 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 13:12:47,803 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-12-02 13:12:47,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 13:12:47,806 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 13:12:47,807 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 13:12:47,808 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 13:12:47,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 13:12:47,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1290826951, now seen corresponding path program 1 times [2018-12-02 13:12:47,812 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 13:12:47,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 13:12:47,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:12:47,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 13:12:47,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:12:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 13:12:47,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 13:12:47,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 13:12:47,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 13:12:47,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 13:12:47,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 13:12:47,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 13:12:47,898 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2018-12-02 13:12:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 13:12:47,910 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2018-12-02 13:12:47,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 13:12:47,910 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-12-02 13:12:47,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 13:12:47,915 INFO L225 Difference]: With dead ends: 38 [2018-12-02 13:12:47,915 INFO L226 Difference]: Without dead ends: 18 [2018-12-02 13:12:47,917 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 13:12:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-02 13:12:47,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-02 13:12:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-02 13:12:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-12-02 13:12:47,936 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2018-12-02 13:12:47,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 13:12:47,937 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-12-02 13:12:47,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 13:12:47,937 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-12-02 13:12:47,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-02 13:12:47,937 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 13:12:47,937 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 13:12:47,937 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 13:12:47,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 13:12:47,938 INFO L82 PathProgramCache]: Analyzing trace with hash 918292248, now seen corresponding path program 1 times [2018-12-02 13:12:47,938 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 13:12:47,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 13:12:47,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:12:47,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 13:12:47,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:12:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 13:12:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 13:12:48,006 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 13:12:48,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 13:12:48,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 13:12:48,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 13:12:48,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 13:12:48,008 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2018-12-02 13:12:48,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 13:12:48,052 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-12-02 13:12:48,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 13:12:48,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-12-02 13:12:48,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 13:12:48,053 INFO L225 Difference]: With dead ends: 33 [2018-12-02 13:12:48,053 INFO L226 Difference]: Without dead ends: 31 [2018-12-02 13:12:48,053 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-02 13:12:48,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-02 13:12:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2018-12-02 13:12:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-02 13:12:48,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-12-02 13:12:48,056 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2018-12-02 13:12:48,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 13:12:48,057 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-12-02 13:12:48,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 13:12:48,057 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-12-02 13:12:48,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 13:12:48,057 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 13:12:48,057 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 13:12:48,057 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 13:12:48,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 13:12:48,057 INFO L82 PathProgramCache]: Analyzing trace with hash -2092500037, now seen corresponding path program 1 times [2018-12-02 13:12:48,058 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 13:12:48,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 13:12:48,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:12:48,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 13:12:48,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:12:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 13:12:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 13:12:48,151 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 13:12:48,151 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_68db4487-5ff0-40c5-b7b9-cca3b17a0983/bin-2019/uautomizer/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 13:12:48,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 13:12:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 13:12:48,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 13:12:48,213 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 [2018-12-02 13:12:48,215 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 [2018-12-02 13:12:48,215 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 13:12:48,217 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 13:12:48,229 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 [2018-12-02 13:12:48,231 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 [2018-12-02 13:12:48,231 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 13:12:48,232 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 13:12:48,238 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 13:12:48,238 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2018-12-02 13:12:48,248 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 15 treesize of output 11 [2018-12-02 13:12:48,250 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 11 treesize of output 3 [2018-12-02 13:12:48,250 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 13:12:48,251 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 13:12:48,256 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 15 treesize of output 11 [2018-12-02 13:12:48,257 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 11 treesize of output 3 [2018-12-02 13:12:48,257 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 13:12:48,258 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 13:12:48,261 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 13:12:48,261 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-12-02 13:12:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 13:12:48,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 13:12:48,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-12-02 13:12:48,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 13:12:48,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 13:12:48,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-02 13:12:48,277 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2018-12-02 13:12:48,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 13:12:48,320 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-12-02 13:12:48,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 13:12:48,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-12-02 13:12:48,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 13:12:48,322 INFO L225 Difference]: With dead ends: 37 [2018-12-02 13:12:48,322 INFO L226 Difference]: Without dead ends: 27 [2018-12-02 13:12:48,322 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-02 13:12:48,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-02 13:12:48,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2018-12-02 13:12:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-02 13:12:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-12-02 13:12:48,325 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2018-12-02 13:12:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 13:12:48,325 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-12-02 13:12:48,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 13:12:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-12-02 13:12:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-02 13:12:48,326 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 13:12:48,326 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 13:12:48,326 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 13:12:48,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 13:12:48,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1286645057, now seen corresponding path program 1 times [2018-12-02 13:12:48,327 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 13:12:48,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 13:12:48,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:12:48,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 13:12:48,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 13:12:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 13:12:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 13:12:48,360 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 13:12:48,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:12:48 BoogieIcfgContainer [2018-12-02 13:12:48,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 13:12:48,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 13:12:48,377 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 13:12:48,377 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 13:12:48,377 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:12:47" (3/4) ... [2018-12-02 13:12:48,378 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 13:12:48,405 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_68db4487-5ff0-40c5-b7b9-cca3b17a0983/bin-2019/uautomizer/witness.graphml [2018-12-02 13:12:48,406 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 13:12:48,406 INFO L168 Benchmark]: Toolchain (without parser) took 1093.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 949.6 MB in the beginning and 938.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 95.3 MB. Max. memory is 11.5 GB. [2018-12-02 13:12:48,407 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 13:12:48,407 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -113.6 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. [2018-12-02 13:12:48,407 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 13:12:48,407 INFO L168 Benchmark]: Boogie Preprocessor took 15.44 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 13:12:48,408 INFO L168 Benchmark]: RCFGBuilder took 156.69 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. [2018-12-02 13:12:48,408 INFO L168 Benchmark]: TraceAbstraction took 621.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 946.1 MB in the end (delta: 98.0 MB). Peak memory consumption was 98.0 MB. Max. memory is 11.5 GB. [2018-12-02 13:12:48,408 INFO L168 Benchmark]: Witness Printer took 29.00 ms. Allocated memory is still 1.1 GB. Free memory was 946.1 MB in the beginning and 938.6 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. [2018-12-02 13:12:48,410 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 251.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -113.6 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.44 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 156.69 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 621.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 946.1 MB in the end (delta: 98.0 MB). Peak memory consumption was 98.0 MB. Max. memory is 11.5 GB. * Witness Printer took 29.00 ms. Allocated memory is still 1.1 GB. Free memory was 946.1 MB in the beginning and 938.6 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 644]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] List a = (List) malloc(sizeof(struct node)); VAL [a={15:0}, malloc(sizeof(struct node))={15:0}] [L628] COND FALSE !(a == 0) VAL [a={15:0}, malloc(sizeof(struct node))={15:0}] [L629] List t; [L630] List p = a; [L631] a->h = 2 VAL [a={15:0}, malloc(sizeof(struct node))={15:0}, p={15:0}] [L632] COND TRUE __VERIFIER_nondet_int() [L633] p->h = 1 [L634] t = (List) malloc(sizeof(struct node)) VAL [a={15:0}, malloc(sizeof(struct node))={15:0}, malloc(sizeof(struct node))={20:0}, p={15:0}, t={20:0}] [L635] COND FALSE !(t == 0) VAL [a={15:0}, malloc(sizeof(struct node))={15:0}, malloc(sizeof(struct node))={20:0}, p={15:0}, t={20:0}] [L636] p->n = t [L637] EXPR p->n [L637] p = p->n [L632] COND FALSE !(__VERIFIER_nondet_int()) [L639] p->h = 2 [L640] p->n = 0 [L641] p = a VAL [a={15:0}, malloc(sizeof(struct node))={15:0}, malloc(sizeof(struct node))={20:0}, p={15:0}, t={20:0}] [L642] COND TRUE p!=0 [L643] EXPR p->h VAL [a={15:0}, malloc(sizeof(struct node))={15:0}, malloc(sizeof(struct node))={20:0}, p={15:0}, p->h=1, t={20:0}] [L643] COND TRUE p->h != 2 [L644] __VERIFIER_error() VAL [a={15:0}, malloc(sizeof(struct node))={15:0}, malloc(sizeof(struct node))={20:0}, p={15:0}, t={20:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 57 SDtfs, 39 SDslu, 75 SDs, 0 SdLazy, 54 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 4363 SizeOfPredicates, 7 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...