./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_50f2c78f-f283-4cea-b46f-2031eac24c96/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_50f2c78f-f283-4cea-b46f-2031eac24c96/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_50f2c78f-f283-4cea-b46f-2031eac24c96/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_50f2c78f-f283-4cea-b46f-2031eac24c96/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_50f2c78f-f283-4cea-b46f-2031eac24c96/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_50f2c78f-f283-4cea-b46f-2031eac24c96/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 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 08:57:56,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:57:56,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:57:56,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:57:56,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:57:56,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:57:56,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:57:56,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:57:56,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:57:56,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:57:56,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:57:56,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:57:56,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:57:56,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:57:56,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:57:56,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:57:56,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:57:56,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:57:56,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:57:56,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:57:56,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:57:56,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:57:56,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:57:56,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:57:56,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:57:56,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:57:56,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:57:56,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:57:56,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:57:56,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:57:56,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:57:56,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:57:56,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:57:56,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:57:56,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:57:56,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:57:56,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:57:56,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:57:56,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:57:56,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:57:56,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:57:56,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_50f2c78f-f283-4cea-b46f-2031eac24c96/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:57:56,947 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:57:56,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:57:56,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:57:56,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:57:56,949 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:57:56,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:57:56,950 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:57:56,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:57:56,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:57:56,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:57:56,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:57:56,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:57:56,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:57:56,954 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:57:56,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:57:56,954 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:57:56,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:57:56,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:57:56,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:57:56,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:57:56,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:57:56,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:57:56,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:57:56,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:57:56,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:57:56,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:57:56,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:57:56,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:57:56,957 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/working_dir_50f2c78f-f283-4cea-b46f-2031eac24c96/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 -> 534681b11e8e68e6058985d885b01f2cbfa43e5b [2019-10-22 08:57:56,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:57:57,015 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:57:57,018 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:57:57,019 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:57:57,020 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:57:57,020 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_50f2c78f-f283-4cea-b46f-2031eac24c96/bin/uautomizer/../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2019-10-22 08:57:57,074 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_50f2c78f-f283-4cea-b46f-2031eac24c96/bin/uautomizer/data/bed72c7f3/fb85a5caeb724e088c1b14416079cd60/FLAGa3a006e52 [2019-10-22 08:57:57,547 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:57:57,547 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_50f2c78f-f283-4cea-b46f-2031eac24c96/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2019-10-22 08:57:57,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_50f2c78f-f283-4cea-b46f-2031eac24c96/bin/uautomizer/data/bed72c7f3/fb85a5caeb724e088c1b14416079cd60/FLAGa3a006e52 [2019-10-22 08:57:58,049 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_50f2c78f-f283-4cea-b46f-2031eac24c96/bin/uautomizer/data/bed72c7f3/fb85a5caeb724e088c1b14416079cd60 [2019-10-22 08:57:58,052 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:57:58,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:57:58,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:58,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:57:58,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:57:58,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:58" (1/1) ... [2019-10-22 08:57:58,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ef2aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:58, skipping insertion in model container [2019-10-22 08:57:58,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:58" (1/1) ... [2019-10-22 08:57:58,066 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:57:58,100 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:57:58,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:58,503 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:57:58,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:58,602 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:57:58,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:58 WrapperNode [2019-10-22 08:57:58,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:58,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:58,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:57:58,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:57:58,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:58" (1/1) ... [2019-10-22 08:57:58,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:58" (1/1) ... [2019-10-22 08:57:58,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:58,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:57:58,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:57:58,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:57:58,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:58" (1/1) ... [2019-10-22 08:57:58,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:58" (1/1) ... [2019-10-22 08:57:58,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:58" (1/1) ... [2019-10-22 08:57:58,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:58" (1/1) ... [2019-10-22 08:57:58,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:58" (1/1) ... [2019-10-22 08:57:58,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:58" (1/1) ... [2019-10-22 08:57:58,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:58" (1/1) ... [2019-10-22 08:57:58,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:57:58,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:57:58,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:57:58,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:57:58,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_50f2c78f-f283-4cea-b46f-2031eac24c96/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 [2019-10-22 08:57:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:57:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:57:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 08:57:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:57:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 08:57:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 08:57:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:57:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:57:58,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:57:59,366 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:57:59,367 INFO L284 CfgBuilder]: Removed 75 assume(true) statements. [2019-10-22 08:57:59,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:59 BoogieIcfgContainer [2019-10-22 08:57:59,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:57:59,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:57:59,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:57:59,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:57:59,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:57:58" (1/3) ... [2019-10-22 08:57:59,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796689cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:59, skipping insertion in model container [2019-10-22 08:57:59,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:58" (2/3) ... [2019-10-22 08:57:59,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796689cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:59, skipping insertion in model container [2019-10-22 08:57:59,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:59" (3/3) ... [2019-10-22 08:57:59,375 INFO L109 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2019-10-22 08:57:59,383 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:57:59,389 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2019-10-22 08:57:59,397 INFO L249 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2019-10-22 08:57:59,415 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:57:59,415 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:57:59,415 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:57:59,415 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:57:59,415 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:57:59,415 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:57:59,416 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:57:59,416 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:57:59,428 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2019-10-22 08:57:59,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 08:57:59,432 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:59,433 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:57:59,435 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:59,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:59,440 INFO L82 PathProgramCache]: Analyzing trace with hash 890218827, now seen corresponding path program 1 times [2019-10-22 08:57:59,448 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:59,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391107807] [2019-10-22 08:57:59,449 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:59,449 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:59,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:59,534 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 08:57:59,535 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391107807] [2019-10-22 08:57:59,536 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:59,536 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:57:59,536 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400355332] [2019-10-22 08:57:59,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:57:59,541 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:59,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:57:59,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:57:59,559 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 2 states. [2019-10-22 08:57:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:59,586 INFO L93 Difference]: Finished difference Result 196 states and 316 transitions. [2019-10-22 08:57:59,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:57:59,588 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-10-22 08:57:59,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:59,599 INFO L225 Difference]: With dead ends: 196 [2019-10-22 08:57:59,599 INFO L226 Difference]: Without dead ends: 92 [2019-10-22 08:57:59,603 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 08:57:59,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-10-22 08:57:59,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2019-10-22 08:57:59,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-10-22 08:57:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2019-10-22 08:57:59,649 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 6 [2019-10-22 08:57:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:59,650 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2019-10-22 08:57:59,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:57:59,650 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2019-10-22 08:57:59,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 08:57:59,650 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:59,651 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:59,651 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:59,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:59,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1806865150, now seen corresponding path program 1 times [2019-10-22 08:57:59,652 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:59,652 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649650979] [2019-10-22 08:57:59,652 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:59,652 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:59,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:59,699 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 08:57:59,699 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649650979] [2019-10-22 08:57:59,700 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:59,700 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:57:59,700 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836011077] [2019-10-22 08:57:59,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:57:59,701 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:59,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:57:59,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:59,702 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand 3 states. [2019-10-22 08:57:59,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:59,732 INFO L93 Difference]: Finished difference Result 182 states and 202 transitions. [2019-10-22 08:57:59,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:57:59,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-10-22 08:57:59,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:59,734 INFO L225 Difference]: With dead ends: 182 [2019-10-22 08:57:59,734 INFO L226 Difference]: Without dead ends: 98 [2019-10-22 08:57:59,735 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 08:57:59,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-10-22 08:57:59,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2019-10-22 08:57:59,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-10-22 08:57:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2019-10-22 08:57:59,744 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 7 [2019-10-22 08:57:59,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:59,745 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2019-10-22 08:57:59,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:57:59,745 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2019-10-22 08:57:59,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:57:59,746 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:59,746 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:59,746 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:59,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:59,747 INFO L82 PathProgramCache]: Analyzing trace with hash 663763925, now seen corresponding path program 1 times [2019-10-22 08:57:59,747 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:59,747 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342942791] [2019-10-22 08:57:59,747 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:59,747 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:59,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:59,825 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 08:57:59,825 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342942791] [2019-10-22 08:57:59,825 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:59,828 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:57:59,829 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192495943] [2019-10-22 08:57:59,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:57:59,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:59,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:57:59,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:59,830 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand 5 states. [2019-10-22 08:58:00,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:00,095 INFO L93 Difference]: Finished difference Result 253 states and 288 transitions. [2019-10-22 08:58:00,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:58:00,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-22 08:58:00,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:00,098 INFO L225 Difference]: With dead ends: 253 [2019-10-22 08:58:00,098 INFO L226 Difference]: Without dead ends: 247 [2019-10-22 08:58:00,099 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 08:58:00,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2019-10-22 08:58:00,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 96. [2019-10-22 08:58:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-10-22 08:58:00,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2019-10-22 08:58:00,126 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 13 [2019-10-22 08:58:00,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:00,126 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2019-10-22 08:58:00,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:58:00,127 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2019-10-22 08:58:00,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 08:58:00,127 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:00,128 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 08:58:00,128 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:00,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:00,128 INFO L82 PathProgramCache]: Analyzing trace with hash 2036062252, now seen corresponding path program 1 times [2019-10-22 08:58:00,129 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:00,130 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622099414] [2019-10-22 08:58:00,130 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,130 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:00,255 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 08:58:00,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622099414] [2019-10-22 08:58:00,255 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:00,255 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:58:00,256 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847549799] [2019-10-22 08:58:00,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:58:00,256 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:00,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:58:00,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:58:00,257 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 5 states. [2019-10-22 08:58:00,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:00,533 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2019-10-22 08:58:00,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:58:00,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-22 08:58:00,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:00,536 INFO L225 Difference]: With dead ends: 125 [2019-10-22 08:58:00,537 INFO L226 Difference]: Without dead ends: 123 [2019-10-22 08:58:00,537 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 08:58:00,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-10-22 08:58:00,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 94. [2019-10-22 08:58:00,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-10-22 08:58:00,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2019-10-22 08:58:00,563 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 20 [2019-10-22 08:58:00,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:00,563 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2019-10-22 08:58:00,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:58:00,564 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2019-10-22 08:58:00,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 08:58:00,564 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:00,564 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 08:58:00,565 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:00,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:00,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2014113239, now seen corresponding path program 1 times [2019-10-22 08:58:00,566 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:00,566 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791409682] [2019-10-22 08:58:00,566 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,566 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:00,663 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 08:58:00,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791409682] [2019-10-22 08:58:00,664 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:00,664 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:58:00,664 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173662218] [2019-10-22 08:58:00,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:58:00,665 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:00,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:58:00,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:58:00,665 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 5 states. [2019-10-22 08:58:00,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:00,857 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2019-10-22 08:58:00,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:58:00,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-22 08:58:00,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:00,859 INFO L225 Difference]: With dead ends: 94 [2019-10-22 08:58:00,859 INFO L226 Difference]: Without dead ends: 92 [2019-10-22 08:58:00,859 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 08:58:00,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-10-22 08:58:00,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2019-10-22 08:58:00,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-10-22 08:58:00,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2019-10-22 08:58:00,868 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 20 [2019-10-22 08:58:00,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:00,869 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2019-10-22 08:58:00,869 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:58:00,869 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2019-10-22 08:58:00,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 08:58:00,870 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:00,870 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 08:58:00,871 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:00,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:00,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1486605840, now seen corresponding path program 1 times [2019-10-22 08:58:00,871 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:00,872 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320509843] [2019-10-22 08:58:00,872 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,872 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:00,991 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 08:58:00,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320509843] [2019-10-22 08:58:00,992 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:00,992 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:58:00,992 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348893033] [2019-10-22 08:58:00,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:58:00,993 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:00,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:58:00,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:58:00,993 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 6 states. [2019-10-22 08:58:01,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:01,310 INFO L93 Difference]: Finished difference Result 210 states and 230 transitions. [2019-10-22 08:58:01,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:58:01,311 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-10-22 08:58:01,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:01,313 INFO L225 Difference]: With dead ends: 210 [2019-10-22 08:58:01,313 INFO L226 Difference]: Without dead ends: 208 [2019-10-22 08:58:01,313 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 08:58:01,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2019-10-22 08:58:01,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 98. [2019-10-22 08:58:01,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-10-22 08:58:01,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2019-10-22 08:58:01,323 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 23 [2019-10-22 08:58:01,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:01,323 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2019-10-22 08:58:01,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:58:01,324 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2019-10-22 08:58:01,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 08:58:01,324 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:01,325 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 08:58:01,325 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:01,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:01,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1760261746, now seen corresponding path program 1 times [2019-10-22 08:58:01,326 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:01,326 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24302049] [2019-10-22 08:58:01,326 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:01,326 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:01,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:01,413 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 08:58:01,414 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24302049] [2019-10-22 08:58:01,414 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:01,414 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:58:01,414 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088551637] [2019-10-22 08:58:01,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:58:01,415 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:01,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:58:01,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:58:01,415 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 6 states. [2019-10-22 08:58:01,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:01,735 INFO L93 Difference]: Finished difference Result 208 states and 228 transitions. [2019-10-22 08:58:01,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:58:01,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-10-22 08:58:01,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:01,736 INFO L225 Difference]: With dead ends: 208 [2019-10-22 08:58:01,737 INFO L226 Difference]: Without dead ends: 206 [2019-10-22 08:58:01,737 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 08:58:01,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2019-10-22 08:58:01,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 104. [2019-10-22 08:58:01,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-10-22 08:58:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2019-10-22 08:58:01,745 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 23 [2019-10-22 08:58:01,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:01,745 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2019-10-22 08:58:01,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:58:01,745 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2019-10-22 08:58:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 08:58:01,746 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:01,746 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 08:58:01,747 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:01,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:01,747 INFO L82 PathProgramCache]: Analyzing trace with hash -2060804288, now seen corresponding path program 1 times [2019-10-22 08:58:01,747 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:01,747 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381128254] [2019-10-22 08:58:01,748 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:01,748 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:01,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:01,808 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:01,808 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:58:01,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:58:01 BoogieIcfgContainer [2019-10-22 08:58:01,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:58:01,839 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:58:01,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:58:01,839 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:58:01,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:59" (3/4) ... [2019-10-22 08:58:01,842 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:58:01,891 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_50f2c78f-f283-4cea-b46f-2031eac24c96/bin/uautomizer/witness.graphml [2019-10-22 08:58:01,891 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:58:01,893 INFO L168 Benchmark]: Toolchain (without parser) took 3839.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:01,894 INFO L168 Benchmark]: CDTParser took 0.23 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 08:58:01,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -178.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:01,895 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.56 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 08:58:01,895 INFO L168 Benchmark]: Boogie Preprocessor took 40.37 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. [2019-10-22 08:58:01,896 INFO L168 Benchmark]: RCFGBuilder took 652.38 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 08:58:01,896 INFO L168 Benchmark]: TraceAbstraction took 2470.10 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: -49.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:01,897 INFO L168 Benchmark]: Witness Printer took 52.02 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 08:58:01,899 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 548.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -178.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 71.56 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 40.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 652.38 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 2470.10 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: -49.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 52.02 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: 2.4s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 1.4s, 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, 0.3s 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...