./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum04-1.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_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum04-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/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 aeade23d65797ff650f62ff8e383f015764d9ed2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:02:53,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:53,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:53,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:53,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:53,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:53,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:53,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:53,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:53,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:53,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:53,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:53,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:53,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:53,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:53,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:53,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:53,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:53,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:53,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:53,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:53,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:53,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:53,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:53,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:53,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:53,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:53,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:53,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:53,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:53,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:53,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:53,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:53,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:53,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:53,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:53,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:53,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:53,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:53,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:53,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:53,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:02:53,710 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:53,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:53,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:53,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:53,711 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:53,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:53,712 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:53,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:53,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:53,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:53,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:53,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:53,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:53,713 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:53,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:53,713 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:53,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:53,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:53,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:53,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:53,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:53,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:53,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:53,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:53,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:53,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:53,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:53,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:53,716 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_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/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 -> aeade23d65797ff650f62ff8e383f015764d9ed2 [2019-10-22 09:02:53,740 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:53,749 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:53,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:53,753 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:53,754 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:53,754 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/../../sv-benchmarks/c/loops/sum04-1.i [2019-10-22 09:02:53,799 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/data/2afdb3231/e7df2267fcb04431873b093bbb2dd177/FLAGff618065f [2019-10-22 09:02:54,163 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:54,164 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/sv-benchmarks/c/loops/sum04-1.i [2019-10-22 09:02:54,168 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/data/2afdb3231/e7df2267fcb04431873b093bbb2dd177/FLAGff618065f [2019-10-22 09:02:54,579 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/data/2afdb3231/e7df2267fcb04431873b093bbb2dd177 [2019-10-22 09:02:54,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:54,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:54,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:54,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:54,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:54,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:54" (1/1) ... [2019-10-22 09:02:54,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b554028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:54, skipping insertion in model container [2019-10-22 09:02:54,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:54" (1/1) ... [2019-10-22 09:02:54,595 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:54,607 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:54,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:54,735 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:54,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:54,808 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:54,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:54 WrapperNode [2019-10-22 09:02:54,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:54,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:54,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:54,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:54,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:54" (1/1) ... [2019-10-22 09:02:54,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:54" (1/1) ... [2019-10-22 09:02:54,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:54,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:54,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:54,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:54,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:54" (1/1) ... [2019-10-22 09:02:54,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:54" (1/1) ... [2019-10-22 09:02:54,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:54" (1/1) ... [2019-10-22 09:02:54,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:54" (1/1) ... [2019-10-22 09:02:54,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:54" (1/1) ... [2019-10-22 09:02:54,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:54" (1/1) ... [2019-10-22 09:02:54,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:54" (1/1) ... [2019-10-22 09:02:54,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:54,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:54,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:54,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:54,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/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 09:02:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:55,092 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:55,092 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 09:02:55,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:55 BoogieIcfgContainer [2019-10-22 09:02:55,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:55,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:55,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:55,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:55,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:54" (1/3) ... [2019-10-22 09:02:55,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149ae50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:55, skipping insertion in model container [2019-10-22 09:02:55,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:54" (2/3) ... [2019-10-22 09:02:55,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149ae50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:55, skipping insertion in model container [2019-10-22 09:02:55,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:55" (3/3) ... [2019-10-22 09:02:55,100 INFO L109 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2019-10-22 09:02:55,107 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:55,113 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:02:55,122 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:02:55,142 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:55,142 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:55,142 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:55,143 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:55,143 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:55,143 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:55,143 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:55,143 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:55,155 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-10-22 09:02:55,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 09:02:55,162 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:55,163 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 09:02:55,164 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:55,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:55,168 INFO L82 PathProgramCache]: Analyzing trace with hash 30108868, now seen corresponding path program 1 times [2019-10-22 09:02:55,174 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:55,174 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294004467] [2019-10-22 09:02:55,174 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:55,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:55,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:55,242 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 09:02:55,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294004467] [2019-10-22 09:02:55,244 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:55,244 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:55,244 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955871945] [2019-10-22 09:02:55,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 09:02:55,248 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:55,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 09:02:55,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 09:02:55,262 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-10-22 09:02:55,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:55,277 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-10-22 09:02:55,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 09:02:55,278 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-10-22 09:02:55,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:55,286 INFO L225 Difference]: With dead ends: 18 [2019-10-22 09:02:55,286 INFO L226 Difference]: Without dead ends: 8 [2019-10-22 09:02:55,289 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 09:02:55,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-10-22 09:02:55,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-10-22 09:02:55,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 09:02:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-10-22 09:02:55,316 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-10-22 09:02:55,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:55,317 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-10-22 09:02:55,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 09:02:55,317 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-10-22 09:02:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 09:02:55,317 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:55,317 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 09:02:55,318 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:55,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:55,318 INFO L82 PathProgramCache]: Analyzing trace with hash 29781167, now seen corresponding path program 1 times [2019-10-22 09:02:55,318 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:55,318 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682872501] [2019-10-22 09:02:55,318 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:55,319 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:55,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:55,342 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 09:02:55,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682872501] [2019-10-22 09:02:55,342 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:55,342 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:55,342 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938532569] [2019-10-22 09:02:55,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:55,344 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:55,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:55,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:55,344 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 3 states. [2019-10-22 09:02:55,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:55,376 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2019-10-22 09:02:55,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:55,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-10-22 09:02:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:55,377 INFO L225 Difference]: With dead ends: 18 [2019-10-22 09:02:55,377 INFO L226 Difference]: Without dead ends: 11 [2019-10-22 09:02:55,378 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 09:02:55,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-10-22 09:02:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-10-22 09:02:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 09:02:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-10-22 09:02:55,381 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2019-10-22 09:02:55,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:55,381 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-10-22 09:02:55,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:55,381 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-10-22 09:02:55,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 09:02:55,382 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:55,382 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:55,382 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:55,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:55,382 INFO L82 PathProgramCache]: Analyzing trace with hash -308490948, now seen corresponding path program 1 times [2019-10-22 09:02:55,382 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:55,383 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309856898] [2019-10-22 09:02:55,383 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:55,383 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:55,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:55,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309856898] [2019-10-22 09:02:55,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809299092] [2019-10-22 09:02:55,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:55,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 09:02:55,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:55,580 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:02:55,580 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2019-10-22 09:02:55,580 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498315969] [2019-10-22 09:02:55,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:02:55,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:55,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:55,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:55,581 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2019-10-22 09:02:55,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:55,605 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-10-22 09:02:55,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:02:55,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-10-22 09:02:55,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:55,607 INFO L225 Difference]: With dead ends: 18 [2019-10-22 09:02:55,607 INFO L226 Difference]: Without dead ends: 14 [2019-10-22 09:02:55,607 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:55,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-22 09:02:55,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-10-22 09:02:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 09:02:55,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-10-22 09:02:55,610 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2019-10-22 09:02:55,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:55,610 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-10-22 09:02:55,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:02:55,610 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-10-22 09:02:55,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 09:02:55,611 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:55,611 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:55,812 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:55,812 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:55,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:55,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1722534195, now seen corresponding path program 1 times [2019-10-22 09:02:55,812 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:55,813 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110505731] [2019-10-22 09:02:55,813 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:55,813 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:55,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:55,837 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110505731] [2019-10-22 09:02:55,838 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051166634] [2019-10-22 09:02:55,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:55,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 09:02:55,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:55,880 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:55,880 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-10-22 09:02:55,880 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873295800] [2019-10-22 09:02:55,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:02:55,881 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:55,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:55,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:55,881 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 4 states. [2019-10-22 09:02:55,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:55,912 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-10-22 09:02:55,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:02:55,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-22 09:02:55,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:55,913 INFO L225 Difference]: With dead ends: 25 [2019-10-22 09:02:55,913 INFO L226 Difference]: Without dead ends: 16 [2019-10-22 09:02:55,913 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:55,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-22 09:02:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-10-22 09:02:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-22 09:02:55,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-10-22 09:02:55,916 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2019-10-22 09:02:55,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:55,916 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-10-22 09:02:55,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:02:55,916 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-10-22 09:02:55,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 09:02:55,917 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:55,917 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:56,117 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:56,117 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:56,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:56,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1169242522, now seen corresponding path program 2 times [2019-10-22 09:02:56,118 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:56,118 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777939938] [2019-10-22 09:02:56,118 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:56,118 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:56,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:56,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777939938] [2019-10-22 09:02:56,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48958891] [2019-10-22 09:02:56,168 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:56,198 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:02:56,198 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:02:56,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:56,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:56,203 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:56,205 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-10-22 09:02:56,205 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036030715] [2019-10-22 09:02:56,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:02:56,206 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:56,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:02:56,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:56,206 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 6 states. [2019-10-22 09:02:56,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:56,239 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-10-22 09:02:56,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:02:56,239 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-10-22 09:02:56,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:56,240 INFO L225 Difference]: With dead ends: 29 [2019-10-22 09:02:56,240 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 09:02:56,240 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:56,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 09:02:56,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-10-22 09:02:56,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-22 09:02:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-10-22 09:02:56,244 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2019-10-22 09:02:56,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:56,244 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-10-22 09:02:56,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:02:56,244 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-10-22 09:02:56,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:02:56,244 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:56,245 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:56,445 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:56,445 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:56,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:56,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1635395501, now seen corresponding path program 3 times [2019-10-22 09:02:56,446 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:56,446 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861661735] [2019-10-22 09:02:56,446 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:56,446 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:56,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:56,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861661735] [2019-10-22 09:02:56,509 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894060549] [2019-10-22 09:02:56,509 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:56,546 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-22 09:02:56,546 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:02:56,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:56,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 09:02:56,561 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:56,561 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-10-22 09:02:56,562 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875923300] [2019-10-22 09:02:56,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:02:56,562 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:56,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:02:56,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:02:56,563 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 7 states. [2019-10-22 09:02:56,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:56,601 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-10-22 09:02:56,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:02:56,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-22 09:02:56,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:56,603 INFO L225 Difference]: With dead ends: 27 [2019-10-22 09:02:56,603 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 09:02:56,603 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:02:56,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 09:02:56,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-10-22 09:02:56,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-22 09:02:56,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-10-22 09:02:56,607 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 17 [2019-10-22 09:02:56,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:56,608 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-10-22 09:02:56,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:02:56,608 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-10-22 09:02:56,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 09:02:56,608 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:56,609 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1] [2019-10-22 09:02:56,809 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:56,809 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:56,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:56,810 INFO L82 PathProgramCache]: Analyzing trace with hash -445384004, now seen corresponding path program 4 times [2019-10-22 09:02:56,810 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:56,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648053776] [2019-10-22 09:02:56,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:56,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:56,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:56,858 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:56,859 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648053776] [2019-10-22 09:02:56,859 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182897830] [2019-10-22 09:02:56,859 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:56,879 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 09:02:56,879 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:02:56,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:02:56,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:56,920 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:56,921 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2019-10-22 09:02:56,921 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129518773] [2019-10-22 09:02:56,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 09:02:56,921 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:56,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 09:02:56,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:02:56,922 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 10 states. [2019-10-22 09:02:56,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:56,968 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-10-22 09:02:56,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 09:02:56,968 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-10-22 09:02:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:56,969 INFO L225 Difference]: With dead ends: 34 [2019-10-22 09:02:56,969 INFO L226 Difference]: Without dead ends: 30 [2019-10-22 09:02:56,969 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:02:56,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-22 09:02:56,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-10-22 09:02:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 09:02:56,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-10-22 09:02:56,973 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 20 [2019-10-22 09:02:56,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:56,974 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-10-22 09:02:56,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 09:02:56,974 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-10-22 09:02:56,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 09:02:56,975 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:56,975 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1] [2019-10-22 09:02:57,175 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:57,176 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:57,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:57,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1861594387, now seen corresponding path program 5 times [2019-10-22 09:02:57,176 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:57,176 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329589840] [2019-10-22 09:02:57,176 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:57,176 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:57,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:57,217 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:57,217 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:02:57,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:02:57 BoogieIcfgContainer [2019-10-22 09:02:57,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:02:57,232 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:57,232 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:57,232 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:57,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:55" (3/4) ... [2019-10-22 09:02:57,234 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 09:02:57,273 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6cda0ef7-27e8-4dd2-a435-7c10ab8805ed/bin/uautomizer/witness.graphml [2019-10-22 09:02:57,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:57,275 INFO L168 Benchmark]: Toolchain (without parser) took 2692.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 944.5 MB in the beginning and 985.4 MB in the end (delta: -40.9 MB). Peak memory consumption was 90.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:57,275 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:57,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -182.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:57,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.48 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:57,276 INFO L168 Benchmark]: Boogie Preprocessor took 17.41 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 09:02:57,277 INFO L168 Benchmark]: RCFGBuilder took 233.02 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:57,277 INFO L168 Benchmark]: TraceAbstraction took 2138.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.4 MB in the end (delta: 120.9 MB). Peak memory consumption was 120.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:57,277 INFO L168 Benchmark]: Witness Printer took 40.97 ms. Allocated memory is still 1.2 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:57,279 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 225.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -182.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.48 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 233.02 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2138.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.4 MB in the end (delta: 120.9 MB). Peak memory consumption was 120.9 MB. Max. memory is 11.5 GB. * Witness Printer took 40.97 ms. Allocated memory is still 1.2 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, sn=0; [L13] i=1 [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND FALSE !(i<=8) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.0s, OverallIterations: 8, TraceHistogramMax: 8, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 46 SDslu, 57 SDs, 0 SdLazy, 113 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 179 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 4378 SizeOfPredicates, 4 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 41/150 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...