./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/simple-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-properties/simple-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/bin/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 d0cf6b9a1a7372eb466349e319faa44cf865bdad .................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-678e011 [2019-11-20 07:58:52,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 07:58:52,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 07:58:52,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 07:58:52,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 07:58:52,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 07:58:52,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 07:58:52,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 07:58:52,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 07:58:52,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 07:58:52,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 07:58:52,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 07:58:52,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 07:58:52,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 07:58:52,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 07:58:52,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 07:58:52,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 07:58:52,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 07:58:52,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 07:58:52,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 07:58:52,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 07:58:52,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 07:58:52,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 07:58:52,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 07:58:52,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 07:58:52,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 07:58:52,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 07:58:52,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 07:58:52,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 07:58:52,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 07:58:52,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 07:58:52,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 07:58:52,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 07:58:52,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 07:58:52,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 07:58:52,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 07:58:52,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 07:58:52,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 07:58:52,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 07:58:52,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 07:58:52,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 07:58:52,897 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 07:58:52,918 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 07:58:52,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 07:58:52,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 07:58:52,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 07:58:52,923 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 07:58:52,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 07:58:52,924 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 07:58:52,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 07:58:52,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 07:58:52,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 07:58:52,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 07:58:52,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 07:58:52,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 07:58:52,926 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 07:58:52,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 07:58:52,926 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 07:58:52,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 07:58:52,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 07:58:52,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 07:58:52,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 07:58:52,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 07:58:52,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 07:58:52,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 07:58:52,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 07:58:52,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 07:58:52,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 07:58:52,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 07:58:52,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 07:58:52,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/bin/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 -> d0cf6b9a1a7372eb466349e319faa44cf865bdad [2019-11-20 07:58:53,070 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 07:58:53,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 07:58:53,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 07:58:53,082 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 07:58:53,083 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 07:58:53,083 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/bin/uautomizer/../../sv-benchmarks/c/list-properties/simple-1.i [2019-11-20 07:58:53,151 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/bin/uautomizer/data/ae799e03c/1f45f1e586414e3f8a899d0ea9ecf493/FLAG8a0979fc4 [2019-11-20 07:58:53,578 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 07:58:53,578 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/sv-benchmarks/c/list-properties/simple-1.i [2019-11-20 07:58:53,591 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/bin/uautomizer/data/ae799e03c/1f45f1e586414e3f8a899d0ea9ecf493/FLAG8a0979fc4 [2019-11-20 07:58:53,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/bin/uautomizer/data/ae799e03c/1f45f1e586414e3f8a899d0ea9ecf493 [2019-11-20 07:58:53,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 07:58:53,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 07:58:53,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 07:58:53,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 07:58:53,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 07:58:53,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:58:53" (1/1) ... [2019-11-20 07:58:53,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1024fb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:53, skipping insertion in model container [2019-11-20 07:58:53,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:58:53" (1/1) ... [2019-11-20 07:58:53,618 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 07:58:53,651 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 07:58:54,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 07:58:54,088 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 07:58:54,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 07:58:54,182 INFO L192 MainTranslator]: Completed translation [2019-11-20 07:58:54,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:54 WrapperNode [2019-11-20 07:58:54,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 07:58:54,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 07:58:54,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 07:58:54,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 07:58:54,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:54" (1/1) ... [2019-11-20 07:58:54,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:54" (1/1) ... [2019-11-20 07:58:54,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 07:58:54,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 07:58:54,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 07:58:54,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 07:58:54,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:54" (1/1) ... [2019-11-20 07:58:54,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:54" (1/1) ... [2019-11-20 07:58:54,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:54" (1/1) ... [2019-11-20 07:58:54,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:54" (1/1) ... [2019-11-20 07:58:54,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:54" (1/1) ... [2019-11-20 07:58:54,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:54" (1/1) ... [2019-11-20 07:58:54,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:54" (1/1) ... [2019-11-20 07:58:54,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 07:58:54,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 07:58:54,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 07:58:54,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 07:58:54,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/bin/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 [2019-11-20 07:58:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 07:58:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 07:58:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 07:58:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 07:58:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 07:58:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 07:58:54,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 07:58:54,666 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 07:58:54,667 INFO L285 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-20 07:58:54,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:58:54 BoogieIcfgContainer [2019-11-20 07:58:54,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 07:58:54,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 07:58:54,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 07:58:54,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 07:58:54,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:58:53" (1/3) ... [2019-11-20 07:58:54,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ce208d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:58:54, skipping insertion in model container [2019-11-20 07:58:54,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:54" (2/3) ... [2019-11-20 07:58:54,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ce208d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:58:54, skipping insertion in model container [2019-11-20 07:58:54,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:58:54" (3/3) ... [2019-11-20 07:58:54,678 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-1.i [2019-11-20 07:58:54,687 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 07:58:54,693 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 07:58:54,703 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 07:58:54,725 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 07:58:54,726 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 07:58:54,726 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 07:58:54,726 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 07:58:54,727 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 07:58:54,727 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 07:58:54,727 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 07:58:54,727 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 07:58:54,739 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-20 07:58:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 07:58:54,744 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:54,744 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:58:54,745 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 07:58:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:54,748 INFO L82 PathProgramCache]: Analyzing trace with hash 2114193284, now seen corresponding path program 1 times [2019-11-20 07:58:54,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:58:54,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909262613] [2019-11-20 07:58:54,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:58:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:58:54,884 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909262613] [2019-11-20 07:58:54,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:54,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 07:58:54,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215903236] [2019-11-20 07:58:54,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 07:58:54,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 07:58:54,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 07:58:54,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 07:58:54,901 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-20 07:58:54,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:54,914 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2019-11-20 07:58:54,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 07:58:54,915 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-20 07:58:54,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:54,922 INFO L225 Difference]: With dead ends: 30 [2019-11-20 07:58:54,922 INFO L226 Difference]: Without dead ends: 14 [2019-11-20 07:58:54,924 INFO L630 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 [2019-11-20 07:58:54,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-20 07:58:54,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-20 07:58:54,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-20 07:58:54,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-11-20 07:58:54,952 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2019-11-20 07:58:54,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:54,953 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-11-20 07:58:54,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 07:58:54,953 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-11-20 07:58:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 07:58:54,954 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:54,954 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:58:54,954 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 07:58:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:54,954 INFO L82 PathProgramCache]: Analyzing trace with hash 672844787, now seen corresponding path program 1 times [2019-11-20 07:58:54,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:58:54,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31139477] [2019-11-20 07:58:54,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:58:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:58:55,066 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31139477] [2019-11-20 07:58:55,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:55,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 07:58:55,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203448336] [2019-11-20 07:58:55,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 07:58:55,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 07:58:55,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 07:58:55,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 07:58:55,068 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2019-11-20 07:58:55,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:55,181 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-11-20 07:58:55,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 07:58:55,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-20 07:58:55,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:55,183 INFO L225 Difference]: With dead ends: 29 [2019-11-20 07:58:55,183 INFO L226 Difference]: Without dead ends: 27 [2019-11-20 07:58:55,184 INFO L630 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 [2019-11-20 07:58:55,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-20 07:58:55,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2019-11-20 07:58:55,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-20 07:58:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-11-20 07:58:55,190 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 10 [2019-11-20 07:58:55,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:55,191 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-11-20 07:58:55,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 07:58:55,191 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-11-20 07:58:55,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 07:58:55,192 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:55,192 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:58:55,193 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 07:58:55,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:55,193 INFO L82 PathProgramCache]: Analyzing trace with hash 111486456, now seen corresponding path program 1 times [2019-11-20 07:58:55,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:58:55,194 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9406463] [2019-11-20 07:58:55,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:58:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:58:55,361 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9406463] [2019-11-20 07:58:55,361 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619046167] [2019-11-20 07:58:55,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 07:58:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:55,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-20 07:58:55,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:55,518 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2019-11-20 07:58:55,519 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:55,528 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:55,534 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2019-11-20 07:58:55,534 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:55,545 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:55,545 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:55,546 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2019-11-20 07:58:55,572 INFO L377 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 7 [2019-11-20 07:58:55,572 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:55,581 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:55,585 INFO L377 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 7 [2019-11-20 07:58:55,586 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:55,591 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:55,591 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:55,592 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-11-20 07:58:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:58:55,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 07:58:55,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-20 07:58:55,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099918251] [2019-11-20 07:58:55,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 07:58:55,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 07:58:55,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 07:58:55,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-20 07:58:55,596 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2019-11-20 07:58:55,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:55,677 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2019-11-20 07:58:55,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 07:58:55,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-20 07:58:55,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:55,678 INFO L225 Difference]: With dead ends: 33 [2019-11-20 07:58:55,679 INFO L226 Difference]: Without dead ends: 23 [2019-11-20 07:58:55,679 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-20 07:58:55,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-20 07:58:55,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 16. [2019-11-20 07:58:55,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-20 07:58:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-20 07:58:55,683 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2019-11-20 07:58:55,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:55,683 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-20 07:58:55,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 07:58:55,683 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-20 07:58:55,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 07:58:55,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:55,684 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:58:55,887 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 07:58:55,887 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 07:58:55,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:55,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1682540518, now seen corresponding path program 1 times [2019-11-20 07:58:55,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:58:55,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942424986] [2019-11-20 07:58:55,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:58:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:58:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:58:55,992 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:58:55,992 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 07:58:56,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:58:56 BoogieIcfgContainer [2019-11-20 07:58:56,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 07:58:56,018 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 07:58:56,018 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 07:58:56,019 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 07:58:56,019 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:58:54" (3/4) ... [2019-11-20 07:58:56,021 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 07:58:56,066 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_eb940164-032b-4ebc-bd7e-59c6f1b28247/bin/uautomizer/witness.graphml [2019-11-20 07:58:56,066 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 07:58:56,068 INFO L168 Benchmark]: Toolchain (without parser) took 2462.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 938.0 MB in the beginning and 1.0 GB in the end (delta: -73.2 MB). Peak memory consumption was 73.6 MB. Max. memory is 11.5 GB. [2019-11-20 07:58:56,068 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 07:58:56,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 579.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -191.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-20 07:58:56,069 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 07:58:56,070 INFO L168 Benchmark]: Boogie Preprocessor took 25.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 07:58:56,073 INFO L168 Benchmark]: RCFGBuilder took 416.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-20 07:58:56,074 INFO L168 Benchmark]: TraceAbstraction took 1349.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 85.1 MB). Peak memory consumption was 85.1 MB. Max. memory is 11.5 GB. [2019-11-20 07:58:56,074 INFO L168 Benchmark]: Witness Printer took 48.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 07:58:56,076 INFO L335 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 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 579.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -191.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 416.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1349.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 85.1 MB). Peak memory consumption was 85.1 MB. Max. memory is 11.5 GB. * Witness Printer took 48.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 538]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); [L522] COND FALSE !(a == 0) [L523] List t; [L524] List p = a; [L525] a->h = 2 [L526] COND TRUE __VERIFIER_nondet_int() [L527] p->h = 1 [L528] t = (List) malloc(sizeof(struct node)) [L529] COND FALSE !(t == 0) [L530] p->n = t [L531] EXPR p->n [L531] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L533] p->h = 2 [L534] p->n = 0 [L535] p = a [L536] COND TRUE p!=0 [L537] EXPR p->h [L537] COND TRUE p->h != 2 [L538] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 39 SDslu, 47 SDs, 0 SdLazy, 58 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 3067 SizeOfPredicates, 7 NumberOfNonLiveVariables, 55 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...