./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7bf9bd94-f54f-46e7-92a5-41ff284e9eee/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7bf9bd94-f54f-46e7-92a5-41ff284e9eee/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7bf9bd94-f54f-46e7-92a5-41ff284e9eee/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7bf9bd94-f54f-46e7-92a5-41ff284e9eee/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_7bf9bd94-f54f-46e7-92a5-41ff284e9eee/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7bf9bd94-f54f-46e7-92a5-41ff284e9eee/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 534681b11e8e68e6058985d885b01f2cbfa43e5b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-cad4683 [2019-10-22 11:22:25,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:22:25,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:22:25,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:22:25,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:22:25,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:22:25,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:22:25,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:22:25,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:22:25,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:22:25,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:22:25,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:22:25,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:22:25,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:22:25,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:22:25,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:22:25,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:22:25,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:22:25,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:22:25,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:22:25,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:22:25,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:22:25,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:22:25,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:22:25,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:22:25,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:22:25,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:22:25,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:22:25,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:22:25,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:22:25,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:22:25,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:22:25,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:22:25,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:22:25,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:22:25,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:22:25,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:22:25,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:22:25,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:22:25,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:22:25,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:22:25,931 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7bf9bd94-f54f-46e7-92a5-41ff284e9eee/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:22:25,942 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:22:25,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:22:25,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:22:25,943 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:22:25,943 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:22:25,943 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:22:25,944 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:22:25,944 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:22:25,944 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:22:25,944 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:22:25,944 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:22:25,944 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:22:25,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:22:25,945 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:22:25,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:22:25,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:22:25,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:22:25,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:22:25,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:22:25,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:22:25,946 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:22:25,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:22:25,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:22:25,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:22:25,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:22:25,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:22:25,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:22:25,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:25,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:22:25,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:22:25,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:22:25,948 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:22:25,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:22:25,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:22:25,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:22:25,949 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_7bf9bd94-f54f-46e7-92a5-41ff284e9eee/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 534681b11e8e68e6058985d885b01f2cbfa43e5b [2019-10-22 11:22:25,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:22:25,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:22:25,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:22:25,998 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:22:25,999 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:22:25,999 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7bf9bd94-f54f-46e7-92a5-41ff284e9eee/bin/utaipan/../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2019-10-22 11:22:26,042 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7bf9bd94-f54f-46e7-92a5-41ff284e9eee/bin/utaipan/data/4dd46b105/de06ba51e6c246acaabb81b4b1545b0d/FLAGdab027f71 [2019-10-22 11:22:26,472 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:22:26,473 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7bf9bd94-f54f-46e7-92a5-41ff284e9eee/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2019-10-22 11:22:26,488 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7bf9bd94-f54f-46e7-92a5-41ff284e9eee/bin/utaipan/data/4dd46b105/de06ba51e6c246acaabb81b4b1545b0d/FLAGdab027f71 [2019-10-22 11:22:26,498 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7bf9bd94-f54f-46e7-92a5-41ff284e9eee/bin/utaipan/data/4dd46b105/de06ba51e6c246acaabb81b4b1545b0d [2019-10-22 11:22:26,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:22:26,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:22:26,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:26,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:22:26,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:22:26,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:26" (1/1) ... [2019-10-22 11:22:26,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d0e713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:26, skipping insertion in model container [2019-10-22 11:22:26,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:26" (1/1) ... [2019-10-22 11:22:26,517 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:22:26,552 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:22:26,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:26,897 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:22:26,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:27,002 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:22:27,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:27 WrapperNode [2019-10-22 11:22:27,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:27,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:27,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:22:27,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:22:27,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:27" (1/1) ... [2019-10-22 11:22:27,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:27" (1/1) ... [2019-10-22 11:22:27,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:27,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:22:27,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:22:27,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:22:27,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:27" (1/1) ... [2019-10-22 11:22:27,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:27" (1/1) ... [2019-10-22 11:22:27,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:27" (1/1) ... [2019-10-22 11:22:27,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:27" (1/1) ... [2019-10-22 11:22:27,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:27" (1/1) ... [2019-10-22 11:22:27,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:27" (1/1) ... [2019-10-22 11:22:27,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:27" (1/1) ... [2019-10-22 11:22:27,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:22:27,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:22:27,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:22:27,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:22:27,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7bf9bd94-f54f-46e7-92a5-41ff284e9eee/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:27,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:22:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:22:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 11:22:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:22:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 11:22:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 11:22:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:22:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:22:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:22:27,806 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:22:27,806 INFO L284 CfgBuilder]: Removed 75 assume(true) statements. [2019-10-22 11:22:27,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:27 BoogieIcfgContainer [2019-10-22 11:22:27,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:22:27,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:22:27,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:22:27,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:22:27,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:22:26" (1/3) ... [2019-10-22 11:22:27,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de330ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:27, skipping insertion in model container [2019-10-22 11:22:27,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:27" (2/3) ... [2019-10-22 11:22:27,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de330ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:27, skipping insertion in model container [2019-10-22 11:22:27,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:27" (3/3) ... [2019-10-22 11:22:27,813 INFO L109 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2019-10-22 11:22:27,821 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:22:27,827 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2019-10-22 11:22:27,835 INFO L249 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2019-10-22 11:22:27,852 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:22:27,852 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:22:27,853 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:22:27,853 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:22:27,853 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:22:27,853 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:22:27,853 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:22:27,853 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:22:27,865 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2019-10-22 11:22:27,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:22:27,870 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:27,871 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:22:27,873 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:27,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:27,877 INFO L82 PathProgramCache]: Analyzing trace with hash 890218827, now seen corresponding path program 1 times [2019-10-22 11:22:27,883 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:27,884 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685985524] [2019-10-22 11:22:27,884 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:27,884 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:27,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:27,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:27,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685985524] [2019-10-22 11:22:27,974 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:27,979 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:22:27,979 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262591285] [2019-10-22 11:22:27,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:22:27,983 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:27,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:22:27,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:27,997 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 2 states. [2019-10-22 11:22:28,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:28,026 INFO L93 Difference]: Finished difference Result 196 states and 316 transitions. [2019-10-22 11:22:28,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:22:28,027 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-10-22 11:22:28,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:28,037 INFO L225 Difference]: With dead ends: 196 [2019-10-22 11:22:28,037 INFO L226 Difference]: Without dead ends: 92 [2019-10-22 11:22:28,040 INFO L600 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 [2019-10-22 11:22:28,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-10-22 11:22:28,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2019-10-22 11:22:28,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-10-22 11:22:28,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2019-10-22 11:22:28,080 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 6 [2019-10-22 11:22:28,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:28,081 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2019-10-22 11:22:28,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:22:28,081 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2019-10-22 11:22:28,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:22:28,081 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:28,081 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:28,082 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:28,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:28,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1806865150, now seen corresponding path program 1 times [2019-10-22 11:22:28,087 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:28,087 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311046284] [2019-10-22 11:22:28,087 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:28,087 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:28,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:28,128 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311046284] [2019-10-22 11:22:28,128 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:28,128 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:22:28,129 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271067768] [2019-10-22 11:22:28,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:22:28,130 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:28,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:22:28,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:28,131 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand 3 states. [2019-10-22 11:22:28,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:28,176 INFO L93 Difference]: Finished difference Result 182 states and 202 transitions. [2019-10-22 11:22:28,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:28,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-10-22 11:22:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:28,180 INFO L225 Difference]: With dead ends: 182 [2019-10-22 11:22:28,181 INFO L226 Difference]: Without dead ends: 98 [2019-10-22 11:22:28,182 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:28,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-10-22 11:22:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2019-10-22 11:22:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-10-22 11:22:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2019-10-22 11:22:28,189 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 7 [2019-10-22 11:22:28,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:28,189 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2019-10-22 11:22:28,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:22:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2019-10-22 11:22:28,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 11:22:28,190 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:28,190 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:28,193 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:28,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:28,193 INFO L82 PathProgramCache]: Analyzing trace with hash 663763925, now seen corresponding path program 1 times [2019-10-22 11:22:28,194 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:28,194 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701931245] [2019-10-22 11:22:28,194 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:28,194 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:28,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:28,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:28,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701931245] [2019-10-22 11:22:28,278 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:28,279 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:22:28,279 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650859220] [2019-10-22 11:22:28,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:28,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:28,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:28,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:28,280 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand 5 states. [2019-10-22 11:22:28,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:28,402 INFO L93 Difference]: Finished difference Result 253 states and 288 transitions. [2019-10-22 11:22:28,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:22:28,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-22 11:22:28,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:28,405 INFO L225 Difference]: With dead ends: 253 [2019-10-22 11:22:28,405 INFO L226 Difference]: Without dead ends: 247 [2019-10-22 11:22:28,405 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:22:28,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2019-10-22 11:22:28,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 96. [2019-10-22 11:22:28,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-10-22 11:22:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2019-10-22 11:22:28,416 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 13 [2019-10-22 11:22:28,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:28,416 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2019-10-22 11:22:28,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:28,416 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2019-10-22 11:22:28,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 11:22:28,417 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:28,417 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:28,417 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:28,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:28,417 INFO L82 PathProgramCache]: Analyzing trace with hash 2036062252, now seen corresponding path program 1 times [2019-10-22 11:22:28,418 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:28,418 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308649927] [2019-10-22 11:22:28,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:28,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:28,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 11:22:28,482 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308649927] [2019-10-22 11:22:28,482 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:28,482 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:22:28,482 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199715135] [2019-10-22 11:22:28,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:28,483 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:28,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:28,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:28,483 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 5 states. [2019-10-22 11:22:28,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:28,748 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2019-10-22 11:22:28,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:22:28,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-22 11:22:28,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:28,751 INFO L225 Difference]: With dead ends: 125 [2019-10-22 11:22:28,751 INFO L226 Difference]: Without dead ends: 123 [2019-10-22 11:22:28,752 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:22:28,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-10-22 11:22:28,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 94. [2019-10-22 11:22:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-10-22 11:22:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2019-10-22 11:22:28,761 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 20 [2019-10-22 11:22:28,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:28,761 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2019-10-22 11:22:28,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:28,761 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2019-10-22 11:22:28,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 11:22:28,762 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:28,762 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:28,762 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:28,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:28,763 INFO L82 PathProgramCache]: Analyzing trace with hash 2014113239, now seen corresponding path program 1 times [2019-10-22 11:22:28,763 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:28,763 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262166310] [2019-10-22 11:22:28,763 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:28,763 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:28,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 11:22:28,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262166310] [2019-10-22 11:22:28,839 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:28,839 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:22:28,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318541144] [2019-10-22 11:22:28,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:28,840 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:28,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:28,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:28,841 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 5 states. [2019-10-22 11:22:29,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:29,036 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2019-10-22 11:22:29,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:22:29,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-22 11:22:29,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:29,037 INFO L225 Difference]: With dead ends: 94 [2019-10-22 11:22:29,037 INFO L226 Difference]: Without dead ends: 92 [2019-10-22 11:22:29,038 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:22:29,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-10-22 11:22:29,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2019-10-22 11:22:29,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-10-22 11:22:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2019-10-22 11:22:29,052 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 20 [2019-10-22 11:22:29,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:29,053 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2019-10-22 11:22:29,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:29,053 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2019-10-22 11:22:29,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 11:22:29,053 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:29,054 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:29,054 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:29,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:29,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1486605840, now seen corresponding path program 1 times [2019-10-22 11:22:29,055 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:29,055 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5659613] [2019-10-22 11:22:29,055 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:29,055 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:29,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:29,197 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5659613] [2019-10-22 11:22:29,197 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:29,198 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 11:22:29,198 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154131432] [2019-10-22 11:22:29,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:22:29,200 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:29,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:22:29,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:22:29,201 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 6 states. [2019-10-22 11:22:29,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:29,510 INFO L93 Difference]: Finished difference Result 210 states and 230 transitions. [2019-10-22 11:22:29,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:22:29,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-10-22 11:22:29,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:29,513 INFO L225 Difference]: With dead ends: 210 [2019-10-22 11:22:29,513 INFO L226 Difference]: Without dead ends: 208 [2019-10-22 11:22:29,513 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:22:29,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2019-10-22 11:22:29,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 98. [2019-10-22 11:22:29,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-10-22 11:22:29,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2019-10-22 11:22:29,534 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 23 [2019-10-22 11:22:29,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:29,534 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2019-10-22 11:22:29,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:22:29,534 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2019-10-22 11:22:29,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 11:22:29,535 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:29,535 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:29,536 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:29,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:29,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1760261746, now seen corresponding path program 1 times [2019-10-22 11:22:29,536 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:29,537 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827803622] [2019-10-22 11:22:29,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:29,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:29,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:29,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827803622] [2019-10-22 11:22:29,618 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:29,619 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 11:22:29,619 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63084125] [2019-10-22 11:22:29,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:22:29,619 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:29,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:22:29,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:22:29,620 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 6 states. [2019-10-22 11:22:29,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:29,920 INFO L93 Difference]: Finished difference Result 208 states and 228 transitions. [2019-10-22 11:22:29,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:22:29,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-10-22 11:22:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:29,922 INFO L225 Difference]: With dead ends: 208 [2019-10-22 11:22:29,922 INFO L226 Difference]: Without dead ends: 206 [2019-10-22 11:22:29,922 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:22:29,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2019-10-22 11:22:29,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 104. [2019-10-22 11:22:29,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-10-22 11:22:29,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2019-10-22 11:22:29,943 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 23 [2019-10-22 11:22:29,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:29,943 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2019-10-22 11:22:29,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:22:29,943 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2019-10-22 11:22:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 11:22:29,944 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:29,944 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:29,944 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:29,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:29,945 INFO L82 PathProgramCache]: Analyzing trace with hash -2060804288, now seen corresponding path program 1 times [2019-10-22 11:22:29,945 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:29,945 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760521305] [2019-10-22 11:22:29,945 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:29,945 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:29,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:22:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:22:30,029 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:22:30,030 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:22:30,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:22:30 BoogieIcfgContainer [2019-10-22 11:22:30,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:22:30,067 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:22:30,067 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:22:30,068 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:22:30,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:27" (3/4) ... [2019-10-22 11:22:30,070 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:22:30,141 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7bf9bd94-f54f-46e7-92a5-41ff284e9eee/bin/utaipan/witness.graphml [2019-10-22 11:22:30,144 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:22:30,146 INFO L168 Benchmark]: Toolchain (without parser) took 3643.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 940.5 MB in the beginning and 1.1 GB in the end (delta: -167.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:30,146 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:30,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 500.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 940.5 MB in the beginning and 1.1 GB in the end (delta: -176.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:30,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.76 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. [2019-10-22 11:22:30,148 INFO L168 Benchmark]: Boogie Preprocessor took 42.40 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:30,148 INFO L168 Benchmark]: RCFGBuilder took 709.60 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: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:30,148 INFO L168 Benchmark]: TraceAbstraction took 2258.41 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: -49.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:30,149 INFO L168 Benchmark]: Witness Printer took 77.08 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:30,159 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 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 500.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 940.5 MB in the beginning and 1.1 GB in the end (delta: -176.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.76 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 42.40 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 709.60 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: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2258.41 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: -49.2 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 77.08 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] struct list *data = ((void *)0); [L628] COND TRUE __VERIFIER_nondet_int() [L629] struct node *node = malloc(sizeof *node); [L630] COND FALSE !(!node) [L632] node->next = node [L633] node->value = __VERIFIER_nondet_int() [L634] struct list *item = malloc(sizeof *item); [L635] COND FALSE !(!item) [L637] item->slist = node [L638] item->next = data [L639] data = item [L628] COND FALSE !(__VERIFIER_nondet_int()) [L641] COND FALSE !(!data) [L604] COND FALSE !(!(shape)) [L605] shape->next [L605] COND FALSE !(shape->next) [L611] COND FALSE !(!(shape)) [L612] EXPR shape->next [L612] COND FALSE !(!(shape->next == ((void *)0))) [L613] EXPR shape->slist [L613] COND FALSE !(!(shape->slist)) [L614] EXPR shape->slist [L614] EXPR shape->slist->next [L614] COND TRUE !(shape->slist->next == ((void *)0)) [L554] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 99 locations, 13 error locations. Result: UNSAFE, OverallTime: 2.2s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 606 SDtfs, 1418 SDslu, 979 SDs, 0 SdLazy, 502 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 396 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 9999 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 10/10 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...