./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/large_const.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_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/large_const.i -s /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b03e1cb325e2c3a8ef30197a8e07012b3a728d97 ................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/large_const.i -s /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b03e1cb325e2c3a8ef30197a8e07012b3a728d97 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:22:46,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:22:46,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:22:46,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:22:46,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:22:46,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:22:46,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:22:46,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:22:46,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:22:46,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:22:46,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:22:46,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:22:46,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:22:46,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:22:46,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:22:46,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:22:46,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:22:46,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:22:46,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:22:46,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:22:46,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:22:46,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:22:46,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:22:46,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:22:46,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:22:46,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:22:46,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:22:46,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:22:46,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:22:46,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:22:46,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:22:46,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:22:46,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:22:46,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:22:46,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:22:46,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:22:46,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:22:46,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:22:46,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:22:46,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:22:46,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:22:46,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:22:46,567 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:22:46,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:22:46,567 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:22:46,568 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:22:46,568 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:22:46,568 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:22:46,568 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:22:46,568 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:22:46,568 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:22:46,573 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:22:46,573 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:22:46,573 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:22:46,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:22:46,574 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:22:46,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:22:46,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:22:46,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:22:46,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:22:46,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:22:46,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:22:46,575 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:22:46,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:22:46,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:22:46,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:22:46,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:22:46,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:22:46,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:22:46,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:46,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:22:46,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:22:46,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:22:46,576 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:22:46,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:22:46,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:22:46,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:22:46,577 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b03e1cb325e2c3a8ef30197a8e07012b3a728d97 [2019-10-22 11:22:46,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:22:46,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:22:46,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:22:46,617 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:22:46,618 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:22:46,618 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/../../sv-benchmarks/c/loop-invgen/large_const.i [2019-10-22 11:22:46,665 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/data/ea37d3c25/b9688fd3662b45bcab29461fd6b2a4f7/FLAG8e3ff16f3 [2019-10-22 11:22:47,047 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:22:47,048 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/sv-benchmarks/c/loop-invgen/large_const.i [2019-10-22 11:22:47,053 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/data/ea37d3c25/b9688fd3662b45bcab29461fd6b2a4f7/FLAG8e3ff16f3 [2019-10-22 11:22:47,456 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/data/ea37d3c25/b9688fd3662b45bcab29461fd6b2a4f7 [2019-10-22 11:22:47,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:22:47,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:22:47,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:47,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:22:47,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:22:47,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177880f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47, skipping insertion in model container [2019-10-22 11:22:47,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,475 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:22:47,490 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:22:47,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:47,640 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:22:47,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:47,734 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:22:47,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47 WrapperNode [2019-10-22 11:22:47,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:47,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:47,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:22:47,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:22:47,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:47,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:22:47,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:22:47,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:22:47,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... [2019-10-22 11:22:47,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:22:47,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:22:47,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:22:47,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:22:47,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:47,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:22:47,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:22:48,052 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:22:48,052 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 11:22:48,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:48 BoogieIcfgContainer [2019-10-22 11:22:48,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:22:48,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:22:48,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:22:48,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:22:48,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:22:47" (1/3) ... [2019-10-22 11:22:48,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fde5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:48, skipping insertion in model container [2019-10-22 11:22:48,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:47" (2/3) ... [2019-10-22 11:22:48,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fde5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:48, skipping insertion in model container [2019-10-22 11:22:48,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:48" (3/3) ... [2019-10-22 11:22:48,061 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2019-10-22 11:22:48,070 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:22:48,077 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:22:48,088 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:22:48,109 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:22:48,109 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:22:48,109 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:22:48,109 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:22:48,109 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:22:48,110 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:22:48,110 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:22:48,110 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:22:48,120 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-22 11:22:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:22:48,125 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:48,126 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:48,128 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:48,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:48,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1461315706, now seen corresponding path program 1 times [2019-10-22 11:22:48,143 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:48,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151319724] [2019-10-22 11:22:48,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:48,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:48,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:48,242 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 11:22:48,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151319724] [2019-10-22 11:22:48,244 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:48,244 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:22:48,245 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237291023] [2019-10-22 11:22:48,249 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:22:48,251 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:48,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:22:48,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:48,267 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-10-22 11:22:48,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:48,284 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2019-10-22 11:22:48,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:22:48,286 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-10-22 11:22:48,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:48,296 INFO L225 Difference]: With dead ends: 26 [2019-10-22 11:22:48,296 INFO L226 Difference]: Without dead ends: 12 [2019-10-22 11:22:48,299 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:48,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-22 11:22:48,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-22 11:22:48,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 11:22:48,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2019-10-22 11:22:48,336 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2019-10-22 11:22:48,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:48,336 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-10-22 11:22:48,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:22:48,336 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2019-10-22 11:22:48,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:22:48,337 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:48,337 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:48,337 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:48,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:48,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1479786126, now seen corresponding path program 1 times [2019-10-22 11:22:48,338 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:48,338 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761019048] [2019-10-22 11:22:48,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:48,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:48,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:48,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761019048] [2019-10-22 11:22:48,445 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:48,445 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:22:48,446 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514401463] [2019-10-22 11:22:48,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:48,447 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:48,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:48,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:48,448 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand 5 states. [2019-10-22 11:22:48,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:48,505 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2019-10-22 11:22:48,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:22:48,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-10-22 11:22:48,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:48,506 INFO L225 Difference]: With dead ends: 20 [2019-10-22 11:22:48,506 INFO L226 Difference]: Without dead ends: 13 [2019-10-22 11:22:48,507 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:22:48,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-22 11:22:48,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-22 11:22:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-22 11:22:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-10-22 11:22:48,510 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2019-10-22 11:22:48,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:48,511 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-10-22 11:22:48,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:48,511 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2019-10-22 11:22:48,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:22:48,511 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:48,511 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:48,512 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:48,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:48,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1660828652, now seen corresponding path program 1 times [2019-10-22 11:22:48,512 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:48,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604940047] [2019-10-22 11:22:48,513 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:48,513 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:48,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:48,664 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 11:22:48,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604940047] [2019-10-22 11:22:48,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292727694] [2019-10-22 11:22:48,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/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 11:22:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:48,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 11:22:48,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:48,749 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:22:48,765 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 11:22:48,765 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:48,807 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 11:22:48,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1433945228] [2019-10-22 11:22:48,813 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 11 [2019-10-22 11:22:48,851 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:22:48,851 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:22:49,142 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:49,142 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:22:49,151 INFO L168 Benchmark]: Toolchain (without parser) took 1690.17 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 943.1 MB in the beginning and 1.0 GB in the end (delta: -93.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:49,151 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:49,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 941.8 MB in the beginning and 1.1 GB in the end (delta: -174.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:49,158 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:49,158 INFO L168 Benchmark]: Boogie Preprocessor took 32.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:49,159 INFO L168 Benchmark]: RCFGBuilder took 247.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:49,159 INFO L168 Benchmark]: TraceAbstraction took 1094.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:49,165 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 274.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 941.8 MB in the beginning and 1.1 GB in the end (delta: -174.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 247.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1094.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:22:51,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:22:51,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:22:51,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:22:51,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:22:51,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:22:51,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:22:51,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:22:51,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:22:51,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:22:51,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:22:51,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:22:51,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:22:51,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:22:51,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:22:51,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:22:51,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:22:51,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:22:51,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:22:51,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:22:51,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:22:51,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:22:51,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:22:51,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:22:51,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:22:51,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:22:51,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:22:51,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:22:51,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:22:51,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:22:51,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:22:51,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:22:51,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:22:51,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:22:51,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:22:51,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:22:51,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:22:51,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:22:51,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:22:51,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:22:51,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:22:51,151 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:22:51,162 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:22:51,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:22:51,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:22:51,163 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:22:51,163 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:22:51,163 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:22:51,163 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:22:51,164 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:22:51,164 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:22:51,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:22:51,164 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:22:51,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:22:51,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:22:51,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:22:51,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:22:51,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:22:51,165 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:22:51,166 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:22:51,166 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:22:51,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:22:51,166 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:22:51,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:22:51,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:22:51,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:22:51,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:22:51,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:22:51,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:51,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:22:51,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:22:51,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:22:51,168 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:22:51,168 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:22:51,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:22:51,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:22:51,168 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b03e1cb325e2c3a8ef30197a8e07012b3a728d97 [2019-10-22 11:22:51,193 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:22:51,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:22:51,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:22:51,207 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:22:51,207 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:22:51,208 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/../../sv-benchmarks/c/loop-invgen/large_const.i [2019-10-22 11:22:51,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/data/b540b1bf5/075cf3b3be994d39882602a86a5e2bc8/FLAG8eabbbe78 [2019-10-22 11:22:51,651 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:22:51,651 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/sv-benchmarks/c/loop-invgen/large_const.i [2019-10-22 11:22:51,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/data/b540b1bf5/075cf3b3be994d39882602a86a5e2bc8/FLAG8eabbbe78 [2019-10-22 11:22:51,669 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/data/b540b1bf5/075cf3b3be994d39882602a86a5e2bc8 [2019-10-22 11:22:51,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:22:51,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:22:51,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:51,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:22:51,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:22:51,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:51" (1/1) ... [2019-10-22 11:22:51,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ebb667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:51, skipping insertion in model container [2019-10-22 11:22:51,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:51" (1/1) ... [2019-10-22 11:22:51,693 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:22:51,706 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:22:51,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:51,878 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:22:51,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:51,907 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:22:51,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:51 WrapperNode [2019-10-22 11:22:51,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:51,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:51,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:22:51,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:22:51,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:51" (1/1) ... [2019-10-22 11:22:51,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:51" (1/1) ... [2019-10-22 11:22:51,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:51,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:22:51,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:22:51,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:22:52,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:51" (1/1) ... [2019-10-22 11:22:52,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:51" (1/1) ... [2019-10-22 11:22:52,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:51" (1/1) ... [2019-10-22 11:22:52,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:51" (1/1) ... [2019-10-22 11:22:52,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:51" (1/1) ... [2019-10-22 11:22:52,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:51" (1/1) ... [2019-10-22 11:22:52,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:51" (1/1) ... [2019-10-22 11:22:52,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:22:52,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:22:52,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:22:52,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:22:52,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:22:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:22:52,274 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:22:52,275 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 11:22:52,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:52 BoogieIcfgContainer [2019-10-22 11:22:52,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:22:52,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:22:52,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:22:52,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:22:52,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:22:51" (1/3) ... [2019-10-22 11:22:52,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cebdc3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:52, skipping insertion in model container [2019-10-22 11:22:52,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:51" (2/3) ... [2019-10-22 11:22:52,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cebdc3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:52, skipping insertion in model container [2019-10-22 11:22:52,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:52" (3/3) ... [2019-10-22 11:22:52,291 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2019-10-22 11:22:52,303 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:22:52,311 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:22:52,322 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:22:52,345 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:22:52,346 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:22:52,346 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:22:52,346 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:22:52,346 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:22:52,346 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:22:52,346 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:22:52,346 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:22:52,362 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-22 11:22:52,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:22:52,367 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:52,368 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:52,369 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:52,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:52,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1461315706, now seen corresponding path program 1 times [2019-10-22 11:22:52,381 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:52,381 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [738154552] [2019-10-22 11:22:52,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:52,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:22:52,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:52,452 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:52,455 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [738154552] [2019-10-22 11:22:52,456 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:52,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:22:52,457 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723929896] [2019-10-22 11:22:52,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:22:52,460 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:52,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:22:52,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:52,471 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-10-22 11:22:52,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:52,488 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2019-10-22 11:22:52,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:22:52,489 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-10-22 11:22:52,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:52,499 INFO L225 Difference]: With dead ends: 26 [2019-10-22 11:22:52,499 INFO L226 Difference]: Without dead ends: 12 [2019-10-22 11:22:52,504 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:52,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-22 11:22:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-22 11:22:52,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 11:22:52,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2019-10-22 11:22:52,537 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2019-10-22 11:22:52,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:52,538 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-10-22 11:22:52,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:22:52,538 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2019-10-22 11:22:52,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:22:52,538 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:52,539 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:52,739 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:52,739 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:52,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:52,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1479786126, now seen corresponding path program 1 times [2019-10-22 11:22:52,740 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:52,740 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1205702058] [2019-10-22 11:22:52,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:52,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:22:52,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:52,850 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:52,901 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1205702058] [2019-10-22 11:22:52,901 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:52,902 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-22 11:22:52,902 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995699781] [2019-10-22 11:22:52,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:22:52,903 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:52,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:22:52,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:22:52,904 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand 8 states. [2019-10-22 11:22:52,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:52,999 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2019-10-22 11:22:53,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:22:53,000 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-10-22 11:22:53,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:53,001 INFO L225 Difference]: With dead ends: 20 [2019-10-22 11:22:53,001 INFO L226 Difference]: Without dead ends: 13 [2019-10-22 11:22:53,002 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:22:53,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-22 11:22:53,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-22 11:22:53,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-22 11:22:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-10-22 11:22:53,005 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2019-10-22 11:22:53,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:53,006 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-10-22 11:22:53,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:22:53,006 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2019-10-22 11:22:53,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:22:53,006 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:53,007 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:53,207 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:53,207 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:53,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:53,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1660828652, now seen corresponding path program 1 times [2019-10-22 11:22:53,208 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:53,208 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1282465321] [2019-10-22 11:22:53,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:53,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:22:53,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:53,307 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 11:22:53,307 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:53,363 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 11:22:53,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1282465321] [2019-10-22 11:22:53,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917701902] [2019-10-22 11:22:53,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/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 11:22:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:53,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 11:22:53,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:53,484 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 11:22:53,484 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:53,652 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 11:22:53,653 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:22:53,653 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7, 7] total 15 [2019-10-22 11:22:53,653 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904390775] [2019-10-22 11:22:53,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 11:22:53,654 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:53,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 11:22:53,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:22:53,655 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 16 states. [2019-10-22 11:22:54,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:54,197 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2019-10-22 11:22:54,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-22 11:22:54,198 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 10 [2019-10-22 11:22:54,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:54,199 INFO L225 Difference]: With dead ends: 50 [2019-10-22 11:22:54,199 INFO L226 Difference]: Without dead ends: 48 [2019-10-22 11:22:54,200 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:22:54,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-22 11:22:54,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 29. [2019-10-22 11:22:54,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 11:22:54,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2019-10-22 11:22:54,209 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 10 [2019-10-22 11:22:54,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:54,209 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-10-22 11:22:54,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 11:22:54,209 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2019-10-22 11:22:54,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:22:54,210 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:54,210 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:54,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:54,611 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:54,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:54,612 INFO L82 PathProgramCache]: Analyzing trace with hash 2129936810, now seen corresponding path program 1 times [2019-10-22 11:22:54,612 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:54,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1572109382] [2019-10-22 11:22:54,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:54,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:22:54,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:54,729 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 11:22:54,730 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:54,827 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 11:22:54,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1572109382] [2019-10-22 11:22:54,828 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570522360] [2019-10-22 11:22:54,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:54,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:22:54,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:54,866 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 11:22:54,866 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:54,870 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 11:22:54,871 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:22:54,871 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6] total 11 [2019-10-22 11:22:54,871 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254595327] [2019-10-22 11:22:54,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 11:22:54,872 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:54,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 11:22:54,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-10-22 11:22:54,873 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand 12 states. [2019-10-22 11:22:55,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:55,271 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2019-10-22 11:22:55,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-22 11:22:55,271 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2019-10-22 11:22:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:55,272 INFO L225 Difference]: With dead ends: 73 [2019-10-22 11:22:55,273 INFO L226 Difference]: Without dead ends: 71 [2019-10-22 11:22:55,273 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2019-10-22 11:22:55,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-10-22 11:22:55,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 38. [2019-10-22 11:22:55,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-22 11:22:55,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 54 transitions. [2019-10-22 11:22:55,283 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 54 transitions. Word has length 11 [2019-10-22 11:22:55,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:55,284 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 54 transitions. [2019-10-22 11:22:55,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 11:22:55,284 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2019-10-22 11:22:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:22:55,284 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:55,284 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:55,685 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:55,685 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:55,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:55,686 INFO L82 PathProgramCache]: Analyzing trace with hash -2107772184, now seen corresponding path program 1 times [2019-10-22 11:22:55,686 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:55,687 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1711250532] [2019-10-22 11:22:55,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:55,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:22:55,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:55,768 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 11:22:55,768 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:55,805 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 11:22:55,805 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1711250532] [2019-10-22 11:22:55,805 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368524441] [2019-10-22 11:22:55,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:55,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 11:22:55,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:55,887 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 11:22:55,887 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:56,012 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 11:22:56,013 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:22:56,013 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7, 7] total 15 [2019-10-22 11:22:56,013 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370290876] [2019-10-22 11:22:56,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 11:22:56,014 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:56,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 11:22:56,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:22:56,014 INFO L87 Difference]: Start difference. First operand 38 states and 54 transitions. Second operand 16 states. [2019-10-22 11:22:56,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:56,512 INFO L93 Difference]: Finished difference Result 73 states and 100 transitions. [2019-10-22 11:22:56,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-22 11:22:56,513 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 11 [2019-10-22 11:22:56,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:56,514 INFO L225 Difference]: With dead ends: 73 [2019-10-22 11:22:56,514 INFO L226 Difference]: Without dead ends: 71 [2019-10-22 11:22:56,515 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:22:56,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-10-22 11:22:56,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 46. [2019-10-22 11:22:56,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-22 11:22:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 68 transitions. [2019-10-22 11:22:56,527 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 68 transitions. Word has length 11 [2019-10-22 11:22:56,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:56,527 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 68 transitions. [2019-10-22 11:22:56,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 11:22:56,527 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 68 transitions. [2019-10-22 11:22:56,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 11:22:56,528 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:56,528 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:56,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:56,936 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:56,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:56,936 INFO L82 PathProgramCache]: Analyzing trace with hash 55602980, now seen corresponding path program 1 times [2019-10-22 11:22:56,936 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:56,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1395128538] [2019-10-22 11:22:56,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:56,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:22:56,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:57,031 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 11:22:57,032 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:57,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1395128538] [2019-10-22 11:22:57,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115835404] [2019-10-22 11:22:57,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:57,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:22:57,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:57,175 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:57,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:57,314 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:22:57,314 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 6] total 13 [2019-10-22 11:22:57,315 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998719049] [2019-10-22 11:22:57,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-22 11:22:57,315 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:57,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-22 11:22:57,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-10-22 11:22:57,316 INFO L87 Difference]: Start difference. First operand 46 states and 68 transitions. Second operand 13 states. [2019-10-22 11:22:57,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:57,372 INFO L93 Difference]: Finished difference Result 53 states and 75 transitions. [2019-10-22 11:22:57,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:22:57,373 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2019-10-22 11:22:57,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:57,373 INFO L225 Difference]: With dead ends: 53 [2019-10-22 11:22:57,374 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 11:22:57,374 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-10-22 11:22:57,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 11:22:57,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-10-22 11:22:57,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-22 11:22:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-10-22 11:22:57,379 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 14 [2019-10-22 11:22:57,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:57,379 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-10-22 11:22:57,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-22 11:22:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-10-22 11:22:57,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:22:57,380 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:57,380 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:57,781 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:57,781 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:57,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:57,781 INFO L82 PathProgramCache]: Analyzing trace with hash 322669516, now seen corresponding path program 1 times [2019-10-22 11:22:57,782 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:57,782 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [427439793] [2019-10-22 11:22:57,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:57,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:22:57,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:22:57,903 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:57,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:22:57,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [427439793] [2019-10-22 11:22:57,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838397854] [2019-10-22 11:22:57,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:57,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:22:57,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:57,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:22:57,980 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:22:57,984 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:22:57,984 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6, 5] total 9 [2019-10-22 11:22:57,984 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787082698] [2019-10-22 11:22:57,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 11:22:57,985 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:57,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 11:22:57,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:22:57,986 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 9 states. [2019-10-22 11:22:58,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:58,024 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-10-22 11:22:58,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:22:58,025 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2019-10-22 11:22:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:58,026 INFO L225 Difference]: With dead ends: 18 [2019-10-22 11:22:58,026 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:22:58,026 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:22:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:22:58,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:22:58,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:22:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:22:58,027 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-10-22 11:22:58,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:58,027 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:22:58,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 11:22:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:22:58,027 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:22:58,428 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:58,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:22:58,801 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2019-10-22 11:22:58,936 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2019-10-22 11:22:59,081 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2019-10-22 11:22:59,083 INFO L443 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-10-22 11:22:59,084 INFO L439 ceAbstractionStarter]: At program point L32-2(lines 32 36) the Hoare annotation is: (let ((.cse3 (= (_ bv10000 32) ULTIMATE.start_main_~c3~0)) (.cse4 (= (_ bv4000 32) ULTIMATE.start_main_~c1~0)) (.cse5 (= (_ bv2000 32) ULTIMATE.start_main_~c2~0)) (.cse2 (bvslt ULTIMATE.start_main_~n~0 (_ bv2 32))) (.cse6 (= (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967295 32)) (_ bv0 32))) (.cse0 (= (_ bv0 32) ULTIMATE.start_main_~j~0)) (.cse1 (bvsle (_ bv0 32) ULTIMATE.start_main_~n~0))) (or (and .cse0 .cse1 .cse2 (or (and (= (_ bv10000 32) ULTIMATE.start_main_~k~0) .cse3 .cse4 .cse5) (and (or (and .cse4 (= (_ bv2000 32) ULTIMATE.start_main_~k~0) .cse5) (and .cse4 (= (_ bv4000 32) ULTIMATE.start_main_~k~0) .cse5)) .cse3)) .cse6) (and (and .cse3 .cse4 (bvsgt ULTIMATE.start_main_~k~0 (_ bv0 32)) .cse5) .cse1 .cse2 (= (_ bv1 32) ULTIMATE.start_main_~j~0) .cse6) (and (not (bvslt (_ bv0 32) ULTIMATE.start_main_~n~0)) .cse0 (= (_ bv0 32) ULTIMATE.start_main_~i~0) .cse1))) [2019-10-22 11:22:59,084 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:22:59,084 INFO L443 ceAbstractionStarter]: For program point L32-3(lines 32 36) no Hoare annotation was computed. [2019-10-22 11:22:59,084 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:22:59,084 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2019-10-22 11:22:59,084 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 30) no Hoare annotation was computed. [2019-10-22 11:22:59,084 INFO L446 ceAbstractionStarter]: At program point L37(lines 10 38) the Hoare annotation is: true [2019-10-22 11:22:59,084 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 11:22:59,085 INFO L439 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (and (= (_ bv0 32) ULTIMATE.start_main_~j~0) (bvsle (_ bv0 32) ULTIMATE.start_main_~n~0) (let ((.cse4 (= (_ bv4000 32) ULTIMATE.start_main_~c1~0))) (let ((.cse0 (= (_ bv10000 32) ULTIMATE.start_main_~c3~0)) (.cse2 (and .cse4 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))))) (.cse1 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse3 (= (_ bv2000 32) ULTIMATE.start_main_~c2~0))) (or (and (= (_ bv10000 32) ULTIMATE.start_main_~k~0) .cse0 .cse1 (and .cse2 .cse3)) (and .cse0 (or (and .cse4 (= (_ bv4000 32) ULTIMATE.start_main_~k~0) .cse1 .cse3) (and .cse2 .cse1 (= (_ bv2000 32) ULTIMATE.start_main_~k~0) .cse3)))))) (bvslt ULTIMATE.start_main_~n~0 (_ bv2 32)) (= (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967295 32)) (_ bv0 32))) [2019-10-22 11:22:59,085 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:22:59,085 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-10-22 11:22:59,085 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 11:22:59,085 INFO L443 ceAbstractionStarter]: For program point L26(lines 26 29) no Hoare annotation was computed. [2019-10-22 11:22:59,086 INFO L439 ceAbstractionStarter]: At program point L26-2(lines 20 30) the Hoare annotation is: (let ((.cse0 (bvsle (_ bv0 32) ULTIMATE.start_main_~n~0)) (.cse2 (= (_ bv4000 32) ULTIMATE.start_main_~c1~0)) (.cse1 (= (_ bv10000 32) ULTIMATE.start_main_~c3~0)) (.cse3 (= (_ bv2000 32) ULTIMATE.start_main_~c2~0))) (or (and (= (_ bv0 32) ULTIMATE.start_main_~i~0) .cse0 (= (_ bv0 32) ULTIMATE.start_main_~k~0) .cse1 .cse2 (bvslt ULTIMATE.start_main_~n~0 (_ bv10 32)) .cse3) (and .cse0 (bvslt ULTIMATE.start_main_~n~0 (_ bv2 32)) (let ((.cse4 (= (bvadd ULTIMATE.start_main_~i~0 (_ bv4294967295 32)) (_ bv0 32)))) (or (and .cse1 .cse2 (= (_ bv4000 32) ULTIMATE.start_main_~k~0) .cse4 .cse3) (and .cse1 .cse2 .cse4 (= (_ bv2000 32) ULTIMATE.start_main_~k~0) .cse3) (and (= (_ bv10000 32) ULTIMATE.start_main_~k~0) .cse2 .cse1 .cse4 .cse3)))))) [2019-10-22 11:22:59,086 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 11:22:59,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:22:59 BoogieIcfgContainer [2019-10-22 11:22:59,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:22:59,104 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:22:59,104 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:22:59,106 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:22:59,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:52" (3/4) ... [2019-10-22 11:22:59,109 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:22:59,116 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 11:22:59,116 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:22:59,117 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 11:22:59,156 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_55112bbd-0e40-4a54-b490-187962dc6723/bin/utaipan/witness.graphml [2019-10-22 11:22:59,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:22:59,157 INFO L168 Benchmark]: Toolchain (without parser) took 7484.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 216.5 MB). Free memory was 945.6 MB in the beginning and 1.0 GB in the end (delta: -79.9 MB). Peak memory consumption was 136.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:59,158 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:59,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.06 ms. Allocated memory is still 1.0 GB. Free memory was 945.6 MB in the beginning and 934.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:59,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 934.9 MB in the beginning and 1.2 GB in the end (delta: -220.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:59,159 INFO L168 Benchmark]: Boogie Preprocessor took 16.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:59,159 INFO L168 Benchmark]: RCFGBuilder took 263.75 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:59,160 INFO L168 Benchmark]: TraceAbstraction took 6819.13 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 97.1 MB). Peak memory consumption was 153.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:59,160 INFO L168 Benchmark]: Witness Printer took 51.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:59,163 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 233.06 ms. Allocated memory is still 1.0 GB. Free memory was 945.6 MB in the beginning and 934.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 86.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 934.9 MB in the beginning and 1.2 GB in the end (delta: -220.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 263.75 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6819.13 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 97.1 MB). Peak memory consumption was 153.7 MB. Max. memory is 11.5 GB. * Witness Printer took 51.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (((0bv32 == j && ~bvsle32(0bv32, n)) && ((((10000bv32 == k && 10000bv32 == c3) && ~bvadd64(cond, 4294967295bv32) == 0bv32) && (4000bv32 == c1 && !(cond == 0bv32)) && 2000bv32 == c2) || (10000bv32 == c3 && ((((4000bv32 == c1 && 4000bv32 == k) && ~bvadd64(cond, 4294967295bv32) == 0bv32) && 2000bv32 == c2) || ((((4000bv32 == c1 && !(cond == 0bv32)) && ~bvadd64(cond, 4294967295bv32) == 0bv32) && 2000bv32 == k) && 2000bv32 == c2))))) && ~bvslt32(n, 2bv32)) && ~bvadd64(i, 4294967295bv32) == 0bv32 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((((0bv32 == i && ~bvsle32(0bv32, n)) && 0bv32 == k) && 10000bv32 == c3) && 4000bv32 == c1) && ~bvslt32(n, 10bv32)) && 2000bv32 == c2) || ((~bvsle32(0bv32, n) && ~bvslt32(n, 2bv32)) && ((((((10000bv32 == c3 && 4000bv32 == c1) && 4000bv32 == k) && ~bvadd64(i, 4294967295bv32) == 0bv32) && 2000bv32 == c2) || ((((10000bv32 == c3 && 4000bv32 == c1) && ~bvadd64(i, 4294967295bv32) == 0bv32) && 2000bv32 == k) && 2000bv32 == c2)) || ((((10000bv32 == k && 4000bv32 == c1) && 10000bv32 == c3) && ~bvadd64(i, 4294967295bv32) == 0bv32) && 2000bv32 == c2))) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((((0bv32 == j && ~bvsle32(0bv32, n)) && ~bvslt32(n, 2bv32)) && ((((10000bv32 == k && 10000bv32 == c3) && 4000bv32 == c1) && 2000bv32 == c2) || ((((4000bv32 == c1 && 2000bv32 == k) && 2000bv32 == c2) || ((4000bv32 == c1 && 4000bv32 == k) && 2000bv32 == c2)) && 10000bv32 == c3))) && ~bvadd64(i, 4294967295bv32) == 0bv32) || (((((((10000bv32 == c3 && 4000bv32 == c1) && ~bvsgt32(k, 0bv32)) && 2000bv32 == c2) && ~bvsle32(0bv32, n)) && ~bvslt32(n, 2bv32)) && 1bv32 == j) && ~bvadd64(i, 4294967295bv32) == 0bv32)) || (((!~bvslt32(0bv32, n) && 0bv32 == j) && 0bv32 == i) && ~bvsle32(0bv32, n)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Result: SAFE, OverallTime: 6.7s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, HoareTripleCheckerStatistics: 97 SDtfs, 304 SDslu, 289 SDs, 0 SdLazy, 492 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 291 GetRequests, 186 SyntacticMatches, 4 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=5, 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, 79 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 263 HoareAnnotationTreeSize, 4 FomulaSimplifications, 1785 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 4 FomulaSimplificationsInter, 111 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 13016 SizeOfPredicates, 45 NumberOfNonLiveVariables, 378 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 39/64 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 correct! Received shutdown request...