./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/splice-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6f54803d-aedd-4280-8096-4ed57dae3f97/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6f54803d-aedd-4280-8096-4ed57dae3f97/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6f54803d-aedd-4280-8096-4ed57dae3f97/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6f54803d-aedd-4280-8096-4ed57dae3f97/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-properties/splice-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6f54803d-aedd-4280-8096-4ed57dae3f97/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6f54803d-aedd-4280-8096-4ed57dae3f97/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 336180afe1780bd2c4e24c39131e05a2fcb6ebf1 ..................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-6b5699a [2019-11-25 08:48:17,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:48:17,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:48:17,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:48:17,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:48:17,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:48:17,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:48:17,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:48:17,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:48:17,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:48:17,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:48:17,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:48:17,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:48:17,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:48:17,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:48:17,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:48:17,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:48:17,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:48:17,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:48:17,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:48:17,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:48:17,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:48:17,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:48:17,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:48:17,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:48:17,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:48:17,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:48:17,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:48:17,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:48:17,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:48:17,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:48:17,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:48:17,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:48:17,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:48:17,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:48:17,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:48:17,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:48:17,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:48:17,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:48:17,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:48:17,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:48:17,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6f54803d-aedd-4280-8096-4ed57dae3f97/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:48:17,991 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:48:17,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:48:17,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:48:17,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:48:17,992 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:48:17,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:48:17,993 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:48:17,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:48:17,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:48:17,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:48:17,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:48:17,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:48:17,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:48:17,995 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:48:17,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:48:17,995 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:48:17,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:48:17,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:48:17,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:48:17,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:48:17,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:48:17,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:48:17,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:48:17,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:48:17,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:48:17,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:48:17,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:48:17,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:48:17,997 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_6f54803d-aedd-4280-8096-4ed57dae3f97/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 -> 336180afe1780bd2c4e24c39131e05a2fcb6ebf1 [2019-11-25 08:48:18,176 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:48:18,186 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:48:18,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:48:18,190 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:48:18,190 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:48:18,190 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6f54803d-aedd-4280-8096-4ed57dae3f97/bin/uautomizer/../../sv-benchmarks/c/list-properties/splice-1.i [2019-11-25 08:48:18,250 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f54803d-aedd-4280-8096-4ed57dae3f97/bin/uautomizer/data/640222a98/6d8f5d7418fd452eb87c98a4bbe18a3e/FLAG46bfd41a1 [2019-11-25 08:48:18,637 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:48:18,638 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6f54803d-aedd-4280-8096-4ed57dae3f97/sv-benchmarks/c/list-properties/splice-1.i [2019-11-25 08:48:18,651 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f54803d-aedd-4280-8096-4ed57dae3f97/bin/uautomizer/data/640222a98/6d8f5d7418fd452eb87c98a4bbe18a3e/FLAG46bfd41a1 [2019-11-25 08:48:18,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6f54803d-aedd-4280-8096-4ed57dae3f97/bin/uautomizer/data/640222a98/6d8f5d7418fd452eb87c98a4bbe18a3e [2019-11-25 08:48:18,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:48:18,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:48:18,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:18,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:48:18,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:48:18,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:18" (1/1) ... [2019-11-25 08:48:18,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a59780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:18, skipping insertion in model container [2019-11-25 08:48:18,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:18" (1/1) ... [2019-11-25 08:48:18,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:48:19,017 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:48:19,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:19,333 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:48:19,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:19,421 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:48:19,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:19 WrapperNode [2019-11-25 08:48:19,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:19,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:19,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:48:19,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:48:19,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:19" (1/1) ... [2019-11-25 08:48:19,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:19" (1/1) ... [2019-11-25 08:48:19,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:19,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:48:19,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:48:19,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:48:19,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:19" (1/1) ... [2019-11-25 08:48:19,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:19" (1/1) ... [2019-11-25 08:48:19,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:19" (1/1) ... [2019-11-25 08:48:19,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:19" (1/1) ... [2019-11-25 08:48:19,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:19" (1/1) ... [2019-11-25 08:48:19,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:19" (1/1) ... [2019-11-25 08:48:19,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:19" (1/1) ... [2019-11-25 08:48:19,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:48:19,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:48:19,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:48:19,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:48:19,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f54803d-aedd-4280-8096-4ed57dae3f97/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 [2019-11-25 08:48:19,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:48:19,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:48:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:48:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-25 08:48:19,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:48:19,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:48:19,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:48:19,995 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:48:19,995 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-25 08:48:19,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:19 BoogieIcfgContainer [2019-11-25 08:48:19,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:48:19,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:48:19,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:48:20,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:48:20,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:48:18" (1/3) ... [2019-11-25 08:48:20,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d12730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:20, skipping insertion in model container [2019-11-25 08:48:20,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:19" (2/3) ... [2019-11-25 08:48:20,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d12730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:20, skipping insertion in model container [2019-11-25 08:48:20,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:19" (3/3) ... [2019-11-25 08:48:20,006 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-1.i [2019-11-25 08:48:20,015 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:48:20,022 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:48:20,032 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:48:20,050 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:48:20,050 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:48:20,051 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:48:20,051 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:48:20,051 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:48:20,051 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:48:20,051 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:48:20,052 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:48:20,065 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-25 08:48:20,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-25 08:48:20,071 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:20,072 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:20,073 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:20,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:20,077 INFO L82 PathProgramCache]: Analyzing trace with hash -427823588, now seen corresponding path program 1 times [2019-11-25 08:48:20,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:20,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233411734] [2019-11-25 08:48:20,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:20,192 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233411734] [2019-11-25 08:48:20,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:20,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:48:20,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902926948] [2019-11-25 08:48:20,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:48:20,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:20,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:48:20,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:48:20,213 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-11-25 08:48:20,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:20,228 INFO L93 Difference]: Finished difference Result 46 states and 69 transitions. [2019-11-25 08:48:20,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:48:20,229 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-25 08:48:20,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:20,236 INFO L225 Difference]: With dead ends: 46 [2019-11-25 08:48:20,236 INFO L226 Difference]: Without dead ends: 23 [2019-11-25 08:48:20,239 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 [2019-11-25 08:48:20,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-25 08:48:20,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-25 08:48:20,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-25 08:48:20,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2019-11-25 08:48:20,270 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 12 [2019-11-25 08:48:20,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:20,270 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2019-11-25 08:48:20,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:48:20,270 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2019-11-25 08:48:20,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:48:20,271 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:20,271 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:20,271 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:20,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:20,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1140031955, now seen corresponding path program 1 times [2019-11-25 08:48:20,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:20,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616426933] [2019-11-25 08:48:20,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:20,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616426933] [2019-11-25 08:48:20,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:20,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:48:20,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171580986] [2019-11-25 08:48:20,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:48:20,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:20,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:48:20,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:48:20,400 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand 4 states. [2019-11-25 08:48:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:20,484 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-11-25 08:48:20,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:48:20,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-25 08:48:20,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:20,486 INFO L225 Difference]: With dead ends: 40 [2019-11-25 08:48:20,486 INFO L226 Difference]: Without dead ends: 33 [2019-11-25 08:48:20,487 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:48:20,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-25 08:48:20,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-11-25 08:48:20,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-25 08:48:20,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-25 08:48:20,492 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2019-11-25 08:48:20,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:20,492 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-25 08:48:20,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:48:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-25 08:48:20,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:48:20,493 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:20,495 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:20,495 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:20,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:20,495 INFO L82 PathProgramCache]: Analyzing trace with hash 352372424, now seen corresponding path program 1 times [2019-11-25 08:48:20,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:20,496 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004553240] [2019-11-25 08:48:20,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:20,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004553240] [2019-11-25 08:48:20,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:20,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:48:20,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250844115] [2019-11-25 08:48:20,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:48:20,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:20,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:48:20,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:48:20,589 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 4 states. [2019-11-25 08:48:20,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:20,655 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2019-11-25 08:48:20,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:48:20,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-11-25 08:48:20,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:20,658 INFO L225 Difference]: With dead ends: 47 [2019-11-25 08:48:20,658 INFO L226 Difference]: Without dead ends: 39 [2019-11-25 08:48:20,659 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:48:20,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-25 08:48:20,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-11-25 08:48:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-25 08:48:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-11-25 08:48:20,667 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 16 [2019-11-25 08:48:20,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:20,668 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-11-25 08:48:20,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:48:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2019-11-25 08:48:20,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-25 08:48:20,669 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:20,670 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:20,670 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:20,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:20,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1051666739, now seen corresponding path program 1 times [2019-11-25 08:48:20,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:20,672 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313709182] [2019-11-25 08:48:20,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:20,772 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313709182] [2019-11-25 08:48:20,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:20,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-25 08:48:20,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494782060] [2019-11-25 08:48:20,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:48:20,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:20,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:48:20,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:48:20,774 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 6 states. [2019-11-25 08:48:20,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:20,950 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2019-11-25 08:48:20,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:48:20,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-25 08:48:20,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:20,952 INFO L225 Difference]: With dead ends: 70 [2019-11-25 08:48:20,952 INFO L226 Difference]: Without dead ends: 43 [2019-11-25 08:48:20,953 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:48:20,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-25 08:48:20,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2019-11-25 08:48:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-25 08:48:20,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2019-11-25 08:48:20,961 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 17 [2019-11-25 08:48:20,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:20,962 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2019-11-25 08:48:20,962 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:48:20,962 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2019-11-25 08:48:20,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-25 08:48:20,963 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:20,964 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:20,964 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:20,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:20,965 INFO L82 PathProgramCache]: Analyzing trace with hash -86042878, now seen corresponding path program 1 times [2019-11-25 08:48:20,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:20,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417812838] [2019-11-25 08:48:20,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:21,061 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:21,061 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:48:21,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:48:21 BoogieIcfgContainer [2019-11-25 08:48:21,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:48:21,104 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:48:21,105 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:48:21,105 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:48:21,105 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:19" (3/4) ... [2019-11-25 08:48:21,107 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:48:21,162 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6f54803d-aedd-4280-8096-4ed57dae3f97/bin/uautomizer/witness.graphml [2019-11-25 08:48:21,163 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:48:21,164 INFO L168 Benchmark]: Toolchain (without parser) took 2195.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -88.2 MB). Peak memory consumption was 81.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:21,165 INFO L168 Benchmark]: CDTParser took 0.16 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. [2019-11-25 08:48:21,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -201.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:21,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.68 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. [2019-11-25 08:48:21,166 INFO L168 Benchmark]: Boogie Preprocessor took 30.82 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. [2019-11-25 08:48:21,166 INFO L168 Benchmark]: RCFGBuilder took 501.00 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:21,167 INFO L168 Benchmark]: TraceAbstraction took 1106.89 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: 75.2 MB). Peak memory consumption was 75.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:21,167 INFO L168 Benchmark]: Witness Printer took 58.29 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. [2019-11-25 08:48:21,170 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 452.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -201.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.68 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. * Boogie Preprocessor took 30.82 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. * RCFGBuilder took 501.00 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1106.89 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: 75.2 MB). Peak memory consumption was 75.2 MB. Max. memory is 11.5 GB. * Witness Printer took 58.29 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: 573]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = 1; [L522] List a = (List) malloc(sizeof(struct node)); [L523] COND FALSE !(a == 0) [L524] List t; [L525] List l1; [L526] List l2; [L527] List b; [L528] List u; [L529] List p = a; [L530] COND TRUE __VERIFIER_nondet_int() [L531] COND TRUE \read(flag) [L532] p->h = 1 [L533] flag = 0 [L538] t = (List) malloc(sizeof(struct node)) [L539] COND FALSE !(t == 0) [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L530] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 3 [L544] EXPR a->h [L544] COND FALSE !(a->h == 3) [L545] flag = 1 [L546] l1 = 0 [L547] l2 = 0 [L548] p = a [L549] EXPR p->h [L549] COND TRUE p->h != 3 [L550] t = p [L551] EXPR p->n [L551] p = p->n [L552] COND TRUE \read(flag) [L553] t->n = l1 [L554] l1 = t [L555] flag = 0 [L549] EXPR p->h [L549] COND FALSE !(p->h != 3) [L562] p = l1 [L563] COND TRUE p != 0 [L564] EXPR p->h [L564] COND TRUE p->h != 2 [L573] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.0s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 26 SDslu, 130 SDs, 0 SdLazy, 107 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, 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, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 2135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 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...