./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/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 0b1dd98d7879c6a852477263dd33a13d229a6eb3 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/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 0b1dd98d7879c6a852477263dd33a13d229a6eb3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 14:09:59,564 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:09:59,565 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:09:59,571 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:09:59,572 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:09:59,572 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:09:59,573 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:09:59,574 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:09:59,575 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:09:59,576 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:09:59,576 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:09:59,576 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:09:59,577 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:09:59,578 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:09:59,578 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:09:59,579 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:09:59,580 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:09:59,581 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:09:59,582 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:09:59,583 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:09:59,584 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:09:59,584 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:09:59,586 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:09:59,586 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:09:59,586 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:09:59,587 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:09:59,587 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:09:59,588 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:09:59,588 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:09:59,589 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:09:59,589 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:09:59,590 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:09:59,590 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:09:59,590 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:09:59,591 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:09:59,591 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:09:59,591 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 14:09:59,601 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:09:59,601 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:09:59,602 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 14:09:59,602 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 14:09:59,602 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 14:09:59,602 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 14:09:59,602 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 14:09:59,602 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 14:09:59,603 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 14:09:59,603 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 14:09:59,603 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 14:09:59,603 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 14:09:59,603 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 14:09:59,604 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:09:59,604 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 14:09:59,604 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 14:09:59,604 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 14:09:59,604 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:09:59,604 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 14:09:59,604 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 14:09:59,605 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 14:09:59,605 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 14:09:59,605 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:09:59,605 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:09:59,605 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 14:09:59,605 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:09:59,605 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:09:59,606 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 14:09:59,606 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 14:09:59,606 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:09:59,606 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:09:59,606 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 14:09:59,606 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 14:09:59,606 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 14:09:59,606 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 14:09:59,606 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 14:09:59,607 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 14:09:59,607 INFO L133 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_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/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 -> 0b1dd98d7879c6a852477263dd33a13d229a6eb3 [2018-11-18 14:09:59,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:09:59,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:09:59,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:09:59,638 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:09:59,638 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:09:59,639 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-18 14:09:59,679 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/data/31913fa18/00dce41030af4ea8b5445f9f5ae57908/FLAGccf78a4e0 [2018-11-18 14:10:00,074 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:10:00,075 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-18 14:10:00,078 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/data/31913fa18/00dce41030af4ea8b5445f9f5ae57908/FLAGccf78a4e0 [2018-11-18 14:10:00,086 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/data/31913fa18/00dce41030af4ea8b5445f9f5ae57908 [2018-11-18 14:10:00,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:10:00,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 14:10:00,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:10:00,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:10:00,092 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:10:00,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:10:00" (1/1) ... [2018-11-18 14:10:00,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74466433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:00, skipping insertion in model container [2018-11-18 14:10:00,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:10:00" (1/1) ... [2018-11-18 14:10:00,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:10:00,117 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:10:00,222 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:10:00,225 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:10:00,235 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:10:00,243 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:10:00,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:00 WrapperNode [2018-11-18 14:10:00,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:10:00,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 14:10:00,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 14:10:00,244 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 14:10:00,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:00" (1/1) ... [2018-11-18 14:10:00,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:00" (1/1) ... [2018-11-18 14:10:00,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 14:10:00,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:10:00,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:10:00,256 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:10:00,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:00" (1/1) ... [2018-11-18 14:10:00,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:00" (1/1) ... [2018-11-18 14:10:00,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:00" (1/1) ... [2018-11-18 14:10:00,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:00" (1/1) ... [2018-11-18 14:10:00,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:00" (1/1) ... [2018-11-18 14:10:00,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:00" (1/1) ... [2018-11-18 14:10:00,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:00" (1/1) ... [2018-11-18 14:10:00,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:10:00,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:10:00,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:10:00,307 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:10:00,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/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 [2018-11-18 14:10:00,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 14:10:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 14:10:00,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:10:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:10:00,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 14:10:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 14:10:00,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 14:10:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 14:10:00,439 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:10:00,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:10:00 BoogieIcfgContainer [2018-11-18 14:10:00,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:10:00,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 14:10:00,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 14:10:00,442 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 14:10:00,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:10:00" (1/3) ... [2018-11-18 14:10:00,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353a13bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:10:00, skipping insertion in model container [2018-11-18 14:10:00,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:00" (2/3) ... [2018-11-18 14:10:00,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353a13bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:10:00, skipping insertion in model container [2018-11-18 14:10:00,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:10:00" (3/3) ... [2018-11-18 14:10:00,444 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-18 14:10:00,450 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 14:10:00,455 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 14:10:00,464 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 14:10:00,485 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 14:10:00,486 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 14:10:00,486 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 14:10:00,486 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:10:00,486 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:10:00,486 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 14:10:00,486 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:10:00,486 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 14:10:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-18 14:10:00,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 14:10:00,505 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:10:00,505 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:10:00,507 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:10:00,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:00,510 INFO L82 PathProgramCache]: Analyzing trace with hash -2008095039, now seen corresponding path program 1 times [2018-11-18 14:10:00,511 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:10:00,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:00,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:10:00,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:00,543 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:10:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:00,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:10:00,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:10:00,576 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:10:00,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 14:10:00,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 14:10:00,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:10:00,588 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-18 14:10:00,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:10:00,600 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-18 14:10:00,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 14:10:00,601 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 14:10:00,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:10:00,607 INFO L225 Difference]: With dead ends: 33 [2018-11-18 14:10:00,607 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 14:10:00,609 INFO L604 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 [2018-11-18 14:10:00,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 14:10:00,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 14:10:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 14:10:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-11-18 14:10:00,630 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-11-18 14:10:00,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:10:00,631 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-18 14:10:00,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 14:10:00,631 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-18 14:10:00,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 14:10:00,631 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:10:00,631 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:10:00,632 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:10:00,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:00,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1715940768, now seen corresponding path program 1 times [2018-11-18 14:10:00,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:10:00,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:00,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:10:00,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:00,633 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:10:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:00,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:00,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:10:00,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 14:10:00,683 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:10:00,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 14:10:00,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 14:10:00,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:10:00,684 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2018-11-18 14:10:00,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:10:00,698 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-18 14:10:00,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 14:10:00,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 14:10:00,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:10:00,699 INFO L225 Difference]: With dead ends: 23 [2018-11-18 14:10:00,699 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 14:10:00,700 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:10:00,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 14:10:00,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-11-18 14:10:00,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 14:10:00,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-11-18 14:10:00,703 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2018-11-18 14:10:00,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:10:00,703 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-11-18 14:10:00,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 14:10:00,703 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-11-18 14:10:00,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 14:10:00,704 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:10:00,704 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:10:00,704 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:10:00,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:00,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1858249546, now seen corresponding path program 1 times [2018-11-18 14:10:00,704 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:10:00,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:00,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:10:00,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:00,706 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:10:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:00,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:00,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:00,757 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:10:00,758 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-18 14:10:00,759 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [17], [21], [28], [31], [33], [39], [40], [41], [43] [2018-11-18 14:10:00,784 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:10:00,784 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:10:00,895 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:10:00,896 INFO L272 AbstractInterpreter]: Visited 14 different actions 38 times. Merged at 5 different actions 17 times. Never widened. Performed 100 root evaluator evaluations with a maximum evaluation depth of 5. Performed 100 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2018-11-18 14:10:00,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:00,901 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:10:00,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:00,901 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:10:00,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:10:00,909 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:10:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:00,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:10:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:00,951 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:10:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:01,019 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:10:01,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-11-18 14:10:01,020 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:10:01,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 14:10:01,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 14:10:01,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-18 14:10:01,021 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2018-11-18 14:10:01,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:10:01,053 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-11-18 14:10:01,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 14:10:01,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-18 14:10:01,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:10:01,054 INFO L225 Difference]: With dead ends: 27 [2018-11-18 14:10:01,054 INFO L226 Difference]: Without dead ends: 22 [2018-11-18 14:10:01,055 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-18 14:10:01,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-18 14:10:01,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-11-18 14:10:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-18 14:10:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-11-18 14:10:01,058 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2018-11-18 14:10:01,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:10:01,058 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-11-18 14:10:01,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 14:10:01,058 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-11-18 14:10:01,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 14:10:01,059 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:10:01,059 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:10:01,059 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:10:01,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:01,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1003959284, now seen corresponding path program 2 times [2018-11-18 14:10:01,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:10:01,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:01,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:10:01,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:01,061 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:10:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:01,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:01,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:01,132 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:10:01,132 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 14:10:01,133 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 14:10:01,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:01,133 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:10:01,141 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 14:10:01,142 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 14:10:01,157 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 14:10:01,157 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:10:01,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:10:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:01,213 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:10:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:01,270 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:10:01,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-11-18 14:10:01,270 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:10:01,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 14:10:01,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 14:10:01,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2018-11-18 14:10:01,271 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 7 states. [2018-11-18 14:10:01,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:10:01,314 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-11-18 14:10:01,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 14:10:01,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-18 14:10:01,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:10:01,315 INFO L225 Difference]: With dead ends: 31 [2018-11-18 14:10:01,315 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 14:10:01,316 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2018-11-18 14:10:01,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 14:10:01,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-11-18 14:10:01,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 14:10:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-11-18 14:10:01,319 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 19 [2018-11-18 14:10:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:10:01,319 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-18 14:10:01,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 14:10:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-11-18 14:10:01,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 14:10:01,320 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:10:01,320 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:10:01,320 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:10:01,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:01,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1434410910, now seen corresponding path program 3 times [2018-11-18 14:10:01,320 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:10:01,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:01,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:10:01,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:01,321 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:10:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:01,384 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:01,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:01,384 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:10:01,385 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 14:10:01,385 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 14:10:01,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:01,385 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:10:01,391 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 14:10:01,391 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 14:10:01,399 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 14:10:01,399 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:10:01,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:10:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:01,477 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:10:01,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:01,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:10:01,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 14 [2018-11-18 14:10:01,621 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:10:01,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 14:10:01,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 14:10:01,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2018-11-18 14:10:01,622 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 9 states. [2018-11-18 14:10:01,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:10:01,704 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2018-11-18 14:10:01,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 14:10:01,705 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-11-18 14:10:01,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:10:01,705 INFO L225 Difference]: With dead ends: 35 [2018-11-18 14:10:01,705 INFO L226 Difference]: Without dead ends: 30 [2018-11-18 14:10:01,706 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2018-11-18 14:10:01,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-18 14:10:01,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-11-18 14:10:01,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 14:10:01,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-11-18 14:10:01,709 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 23 [2018-11-18 14:10:01,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:10:01,709 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-18 14:10:01,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 14:10:01,709 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-11-18 14:10:01,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 14:10:01,710 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:10:01,710 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:10:01,710 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:10:01,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:01,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1032477112, now seen corresponding path program 4 times [2018-11-18 14:10:01,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:10:01,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:01,711 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:10:01,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:01,711 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:10:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:01,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:01,793 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:10:01,793 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 14:10:01,794 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 14:10:01,794 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:01,794 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:10:01,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:10:01,800 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:10:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:01,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:10:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:01,905 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:10:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:02,079 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:10:02,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 17 [2018-11-18 14:10:02,080 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:10:02,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 14:10:02,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 14:10:02,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2018-11-18 14:10:02,081 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 11 states. [2018-11-18 14:10:02,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:10:02,149 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2018-11-18 14:10:02,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 14:10:02,150 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2018-11-18 14:10:02,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:10:02,151 INFO L225 Difference]: With dead ends: 39 [2018-11-18 14:10:02,151 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 14:10:02,151 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2018-11-18 14:10:02,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 14:10:02,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-11-18 14:10:02,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 14:10:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2018-11-18 14:10:02,155 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 27 [2018-11-18 14:10:02,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:10:02,155 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2018-11-18 14:10:02,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 14:10:02,155 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2018-11-18 14:10:02,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 14:10:02,156 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:10:02,156 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:10:02,156 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:10:02,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:02,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1472952334, now seen corresponding path program 5 times [2018-11-18 14:10:02,157 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:10:02,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:02,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:10:02,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:02,158 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:10:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:02,242 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:02,242 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:10:02,242 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 14:10:02,245 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 14:10:02,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:02,246 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:10:02,257 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 14:10:02,257 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 14:10:02,274 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-18 14:10:02,274 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:10:02,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:10:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:02,390 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:10:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:02,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:10:02,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 20 [2018-11-18 14:10:02,569 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:10:02,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 14:10:02,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 14:10:02,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2018-11-18 14:10:02,570 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 13 states. [2018-11-18 14:10:02,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:10:02,664 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2018-11-18 14:10:02,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 14:10:02,664 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2018-11-18 14:10:02,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:10:02,665 INFO L225 Difference]: With dead ends: 43 [2018-11-18 14:10:02,665 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 14:10:02,666 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2018-11-18 14:10:02,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 14:10:02,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-11-18 14:10:02,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 14:10:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-18 14:10:02,671 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 31 [2018-11-18 14:10:02,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:10:02,671 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-18 14:10:02,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 14:10:02,671 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-11-18 14:10:02,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 14:10:02,672 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:10:02,672 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:10:02,672 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:10:02,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:02,673 INFO L82 PathProgramCache]: Analyzing trace with hash -352942948, now seen corresponding path program 6 times [2018-11-18 14:10:02,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:10:02,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:02,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:10:02,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:02,674 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:10:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:02,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:02,807 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:10:02,807 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 14:10:02,807 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 14:10:02,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:02,807 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:10:02,816 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 14:10:02,816 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 14:10:02,833 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 14:10:02,833 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:10:02,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:10:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:03,099 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:10:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:03,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:10:03,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 23 [2018-11-18 14:10:03,469 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:10:03,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 14:10:03,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 14:10:03,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2018-11-18 14:10:03,470 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 15 states. [2018-11-18 14:10:03,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:10:03,598 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2018-11-18 14:10:03,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 14:10:03,599 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2018-11-18 14:10:03,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:10:03,599 INFO L225 Difference]: With dead ends: 47 [2018-11-18 14:10:03,600 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 14:10:03,600 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 12 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2018-11-18 14:10:03,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 14:10:03,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-11-18 14:10:03,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 14:10:03,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-18 14:10:03,605 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 35 [2018-11-18 14:10:03,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:10:03,605 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-18 14:10:03,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 14:10:03,606 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-18 14:10:03,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-18 14:10:03,606 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:10:03,606 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:10:03,606 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:10:03,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:03,607 INFO L82 PathProgramCache]: Analyzing trace with hash -843703226, now seen corresponding path program 7 times [2018-11-18 14:10:03,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:10:03,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:03,607 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:10:03,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:03,608 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:10:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:03,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:03,693 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:10:03,694 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 14:10:03,694 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 14:10:03,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:03,694 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:10:03,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:10:03,701 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:10:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:03,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:10:03,833 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:03,833 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:10:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:04,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:10:04,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2018-11-18 14:10:04,209 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:10:04,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 14:10:04,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 14:10:04,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2018-11-18 14:10:04,210 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 17 states. [2018-11-18 14:10:04,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:10:04,337 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-11-18 14:10:04,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 14:10:04,337 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 39 [2018-11-18 14:10:04,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:10:04,339 INFO L225 Difference]: With dead ends: 51 [2018-11-18 14:10:04,339 INFO L226 Difference]: Without dead ends: 46 [2018-11-18 14:10:04,339 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2018-11-18 14:10:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-18 14:10:04,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2018-11-18 14:10:04,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 14:10:04,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-11-18 14:10:04,345 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 39 [2018-11-18 14:10:04,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:10:04,345 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-11-18 14:10:04,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 14:10:04,345 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-11-18 14:10:04,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-18 14:10:04,346 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:10:04,346 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:10:04,346 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:10:04,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:04,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1842491664, now seen corresponding path program 8 times [2018-11-18 14:10:04,346 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:10:04,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:04,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:10:04,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:10:04,347 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:10:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:10:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:10:04,377 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 14:10:04,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 02:10:04 BoogieIcfgContainer [2018-11-18 14:10:04,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 14:10:04,403 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 14:10:04,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 14:10:04,404 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 14:10:04,404 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:10:00" (3/4) ... [2018-11-18 14:10:04,406 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 14:10:04,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 14:10:04,407 INFO L168 Benchmark]: Toolchain (without parser) took 4318.63 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 235.9 MB). Free memory was 958.5 MB in the beginning and 980.2 MB in the end (delta: -21.8 MB). Peak memory consumption was 214.2 MB. Max. memory is 11.5 GB. [2018-11-18 14:10:04,408 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:10:04,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.17 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 947.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:10:04,409 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.70 ms. Allocated memory is still 1.0 GB. Free memory was 947.7 MB in the beginning and 945.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:10:04,410 INFO L168 Benchmark]: Boogie Preprocessor took 50.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 181.9 MB). Free memory was 945.0 MB in the beginning and 1.2 GB in the end (delta: -235.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-18 14:10:04,410 INFO L168 Benchmark]: RCFGBuilder took 133.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-11-18 14:10:04,411 INFO L168 Benchmark]: TraceAbstraction took 3962.98 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 54.0 MB). Free memory was 1.2 GB in the beginning and 980.2 MB in the end (delta: 186.5 MB). Peak memory consumption was 240.5 MB. Max. memory is 11.5 GB. [2018-11-18 14:10:04,412 INFO L168 Benchmark]: Witness Printer took 3.13 ms. Allocated memory is still 1.3 GB. Free memory is still 980.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:10:04,415 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 154.17 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 947.7 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 11.70 ms. Allocated memory is still 1.0 GB. Free memory was 947.7 MB in the beginning and 945.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 181.9 MB). Free memory was 945.0 MB in the beginning and 1.2 GB in the end (delta: -235.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 133.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3962.98 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 54.0 MB). Free memory was 1.2 GB in the beginning and 980.2 MB in the end (delta: 186.5 MB). Peak memory consumption was 240.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.13 ms. Allocated memory is still 1.3 GB. Free memory is still 980.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftLeft at line 21, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L14] unsigned char x = __VERIFIER_nondet_uchar(); [L15] unsigned char y; [L16] unsigned char c; [L18] y = 0 [L19] c = 0 VAL [c=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=0, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=0, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=1, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=1, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=1, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=2, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=2, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=2, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=3, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=3, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=3, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=4, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=4, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=4, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=5, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=5, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=5, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=6, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=6, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=6, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=7, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=7, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=7, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=8, i=0, x=1, y=0] [L20] COND FALSE !(c < (unsigned char)8) VAL [bit=1, c=8, i=0, x=1, y=0] [L28] CALL __VERIFIER_assert(x == y) VAL [\old(cond)=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. UNSAFE Result, 3.9s OverallTime, 10 OverallIterations, 9 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 210 SDtfs, 133 SDslu, 1083 SDs, 0 SdLazy, 643 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 425 GetRequests, 287 SyntacticMatches, 36 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 442 NumberOfCodeBlocks, 442 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 565 ConstructedInterpolants, 98 QuantifiedInterpolants, 227873 SizeOfPredicates, 12 NumberOfNonLiveVariables, 385 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 0/840 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 14:10:05,841 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:10:05,842 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:10:05,849 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-11-18 14:10:05,855 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:10:05,856 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:10:05,856 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:10:05,858 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:10:05,858 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:10:05,859 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:10:05,860 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:10:05,861 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:10:05,862 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:10:05,863 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:10:05,863 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:10:05,864 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:10:05,864 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:10:05,864 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:10:05,865 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:10:05,865 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:10:05,866 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:10:05,866 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:10:05,867 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:10:05,867 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:10:05,867 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:10:05,867 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:10:05,868 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:10:05,868 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:10:05,868 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:10:05,869 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 14:10:05,878 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:10:05,878 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:10:05,879 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 14:10:05,879 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 14:10:05,879 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 14:10:05,879 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 14:10:05,879 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 14:10:05,879 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 14:10:05,880 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 14:10:05,880 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 14:10:05,880 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:10:05,880 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 14:10:05,880 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 14:10:05,881 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:10:05,881 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 14:10:05,881 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 14:10:05,881 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 14:10:05,882 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 14:10:05,882 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 14:10:05,882 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 14:10:05,882 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:10:05,882 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:10:05,883 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 14:10:05,883 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:10:05,883 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:10:05,883 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 14:10:05,883 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 14:10:05,883 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:10:05,883 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:10:05,884 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 14:10:05,884 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 14:10:05,884 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 14:10:05,884 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 14:10:05,884 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 14:10:05,884 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 14:10:05,884 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/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 -> 0b1dd98d7879c6a852477263dd33a13d229a6eb3 [2018-11-18 14:10:05,916 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:10:05,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:10:05,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:10:05,929 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:10:05,929 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:10:05,929 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-18 14:10:05,975 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/data/182ee8222/6e89dce3dfa04295b58f229f4354453b/FLAGcaf59504b [2018-11-18 14:10:06,366 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:10:06,366 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-18 14:10:06,370 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/data/182ee8222/6e89dce3dfa04295b58f229f4354453b/FLAGcaf59504b [2018-11-18 14:10:06,378 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/data/182ee8222/6e89dce3dfa04295b58f229f4354453b [2018-11-18 14:10:06,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:10:06,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 14:10:06,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:10:06,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:10:06,384 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:10:06,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:10:06" (1/1) ... [2018-11-18 14:10:06,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:06, skipping insertion in model container [2018-11-18 14:10:06,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:10:06" (1/1) ... [2018-11-18 14:10:06,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:10:06,409 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:10:06,530 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:10:06,533 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:10:06,546 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:10:06,555 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:10:06,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:06 WrapperNode [2018-11-18 14:10:06,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:10:06,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 14:10:06,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 14:10:06,556 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 14:10:06,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:06" (1/1) ... [2018-11-18 14:10:06,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:06" (1/1) ... [2018-11-18 14:10:06,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 14:10:06,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:10:06,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:10:06,570 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:10:06,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:06" (1/1) ... [2018-11-18 14:10:06,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:06" (1/1) ... [2018-11-18 14:10:06,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:06" (1/1) ... [2018-11-18 14:10:06,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:06" (1/1) ... [2018-11-18 14:10:06,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:06" (1/1) ... [2018-11-18 14:10:06,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:06" (1/1) ... [2018-11-18 14:10:06,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:06" (1/1) ... [2018-11-18 14:10:06,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:10:06,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:10:06,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:10:06,586 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:10:06,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/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 [2018-11-18 14:10:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 14:10:06,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 14:10:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:10:06,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:10:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 14:10:06,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 14:10:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 14:10:06,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 14:10:06,769 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:10:06,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:10:06 BoogieIcfgContainer [2018-11-18 14:10:06,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:10:06,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 14:10:06,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 14:10:06,772 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 14:10:06,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:10:06" (1/3) ... [2018-11-18 14:10:06,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffd7987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:10:06, skipping insertion in model container [2018-11-18 14:10:06,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:10:06" (2/3) ... [2018-11-18 14:10:06,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffd7987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:10:06, skipping insertion in model container [2018-11-18 14:10:06,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:10:06" (3/3) ... [2018-11-18 14:10:06,774 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-18 14:10:06,782 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 14:10:06,786 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 14:10:06,795 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 14:10:06,812 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 14:10:06,812 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 14:10:06,812 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 14:10:06,813 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 14:10:06,813 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:10:06,813 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:10:06,813 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 14:10:06,813 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:10:06,813 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 14:10:06,828 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-18 14:10:06,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 14:10:06,833 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:10:06,833 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:10:06,835 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:10:06,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:06,838 INFO L82 PathProgramCache]: Analyzing trace with hash -2008095039, now seen corresponding path program 1 times [2018-11-18 14:10:06,841 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 14:10:06,841 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 14:10:06,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:10:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:06,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:10:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:06,890 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 14:10:06,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:10:06,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:10:06,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 14:10:06,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 14:10:06,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:10:06,905 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-18 14:10:06,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:10:06,920 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-18 14:10:06,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 14:10:06,921 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 14:10:06,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:10:06,926 INFO L225 Difference]: With dead ends: 33 [2018-11-18 14:10:06,926 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 14:10:06,928 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:10:06,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 14:10:06,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 14:10:06,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 14:10:06,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-11-18 14:10:06,951 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-11-18 14:10:06,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:10:06,951 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-18 14:10:06,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 14:10:06,952 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-18 14:10:06,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 14:10:06,952 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:10:06,953 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:10:06,953 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:10:06,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:06,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1715940768, now seen corresponding path program 1 times [2018-11-18 14:10:06,954 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 14:10:06,954 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 14:10:06,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:10:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:06,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:10:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:07,011 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 14:10:07,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:10:07,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 14:10:07,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 14:10:07,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 14:10:07,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:10:07,014 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2018-11-18 14:10:07,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:10:07,030 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-18 14:10:07,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 14:10:07,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 14:10:07,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:10:07,031 INFO L225 Difference]: With dead ends: 23 [2018-11-18 14:10:07,031 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 14:10:07,031 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:10:07,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 14:10:07,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-11-18 14:10:07,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 14:10:07,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-11-18 14:10:07,034 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2018-11-18 14:10:07,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:10:07,035 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-11-18 14:10:07,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 14:10:07,035 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-11-18 14:10:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 14:10:07,035 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:10:07,035 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:10:07,036 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:10:07,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:07,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1858249546, now seen corresponding path program 1 times [2018-11-18 14:10:07,036 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 14:10:07,036 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 14:10:07,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:10:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:07,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:10:07,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:07,079 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:10:07,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:07,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:07,108 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:10:07,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:10:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:10:07,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:10:07,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:07,143 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:10:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:07,192 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 14:10:07,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 5] total 7 [2018-11-18 14:10:07,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 14:10:07,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 14:10:07,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-18 14:10:07,193 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 7 states. [2018-11-18 14:10:07,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:10:07,251 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2018-11-18 14:10:07,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 14:10:07,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-11-18 14:10:07,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:10:07,252 INFO L225 Difference]: With dead ends: 33 [2018-11-18 14:10:07,253 INFO L226 Difference]: Without dead ends: 28 [2018-11-18 14:10:07,253 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-18 14:10:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-18 14:10:07,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-18 14:10:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 14:10:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-11-18 14:10:07,259 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2018-11-18 14:10:07,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:10:07,259 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-18 14:10:07,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 14:10:07,259 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-11-18 14:10:07,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 14:10:07,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:10:07,260 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:10:07,260 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:10:07,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:07,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1032477112, now seen corresponding path program 2 times [2018-11-18 14:10:07,262 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 14:10:07,262 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 14:10:07,276 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 14:10:07,300 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 14:10:07,300 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:10:07,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:10:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:07,351 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:10:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:07,439 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:07,439 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:10:07,452 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 14:10:07,467 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 14:10:07,467 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:10:07,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:10:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:07,485 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:10:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:07,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 14:10:07,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 8] total 16 [2018-11-18 14:10:07,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 14:10:07,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 14:10:07,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2018-11-18 14:10:07,693 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 16 states. [2018-11-18 14:10:07,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:10:07,912 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2018-11-18 14:10:07,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 14:10:07,913 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 27 [2018-11-18 14:10:07,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:10:07,913 INFO L225 Difference]: With dead ends: 57 [2018-11-18 14:10:07,914 INFO L226 Difference]: Without dead ends: 52 [2018-11-18 14:10:07,914 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2018-11-18 14:10:07,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-18 14:10:07,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-11-18 14:10:07,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-18 14:10:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2018-11-18 14:10:07,921 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 27 [2018-11-18 14:10:07,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:10:07,921 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2018-11-18 14:10:07,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 14:10:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2018-11-18 14:10:07,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-18 14:10:07,922 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:10:07,922 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:10:07,923 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:10:07,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:10:07,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1842491664, now seen corresponding path program 3 times [2018-11-18 14:10:07,923 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 14:10:07,923 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 14:10:07,939 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 14:10:08,046 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-18 14:10:08,046 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:10:08,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:10:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:10,327 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:10:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:16,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:10:16,433 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f971076d-2e5e-4c85-9559-00611a007022/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:10:16,442 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 14:10:16,463 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-18 14:10:16,463 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:10:16,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:10:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:19,717 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:10:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:10:23,263 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 14:10:23,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 30, 30] total 85 [2018-11-18 14:10:23,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-11-18 14:10:23,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-11-18 14:10:23,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1052, Invalid=6088, Unknown=0, NotChecked=0, Total=7140 [2018-11-18 14:10:23,267 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand 85 states. [2018-11-18 14:10:27,794 WARN L180 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 323 DAG size of output: 301 [2018-11-18 14:10:31,520 WARN L180 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 206 DAG size of output: 186 [2018-11-18 14:10:35,452 WARN L180 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 337 DAG size of output: 318 [2018-11-18 14:10:37,026 WARN L180 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 162 [2018-11-18 14:10:38,507 WARN L180 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 122 [2018-11-18 14:10:39,393 WARN L180 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-11-18 14:10:43,791 WARN L180 SmtUtils]: Spent 3.48 s on a formula simplification. DAG size of input: 220 DAG size of output: 195 [2018-11-18 14:10:46,548 WARN L180 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 166 DAG size of output: 162 [2018-11-18 14:10:47,416 WARN L180 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-11-18 14:10:49,891 WARN L180 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 211 DAG size of output: 184 [2018-11-18 14:10:55,001 WARN L180 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 317 DAG size of output: 296 [2018-11-18 14:10:56,042 WARN L180 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 148 [2018-11-18 14:10:59,267 WARN L180 SmtUtils]: Spent 2.59 s on a formula simplification. DAG size of input: 268 DAG size of output: 264 [2018-11-18 14:10:59,718 WARN L180 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-11-18 14:11:01,125 WARN L180 SmtUtils]: Spent 909.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2018-11-18 14:11:04,112 WARN L180 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 356 DAG size of output: 271 [2018-11-18 14:11:04,751 WARN L180 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-11-18 14:11:06,832 WARN L180 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 210 DAG size of output: 161 [2018-11-18 14:11:07,314 WARN L180 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-11-18 14:11:08,448 WARN L180 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 144 [2018-11-18 14:11:08,863 WARN L180 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2018-11-18 14:11:10,691 WARN L180 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 355 DAG size of output: 241 [2018-11-18 14:11:11,688 WARN L180 SmtUtils]: Spent 564.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2018-11-18 14:11:14,582 WARN L180 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 200 DAG size of output: 169 [2018-11-18 14:11:15,333 WARN L180 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-11-18 14:11:16,529 WARN L180 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 142 [2018-11-18 14:11:17,165 WARN L180 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-11-18 14:11:17,690 WARN L180 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 120 [2018-11-18 14:11:20,237 WARN L180 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 353 DAG size of output: 141 [2018-11-18 14:11:20,992 WARN L180 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-11-18 14:11:22,635 WARN L180 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 267 [2018-11-18 14:11:24,165 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 188 DAG size of output: 166 [2018-11-18 14:11:28,104 WARN L180 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 300 DAG size of output: 274 [2018-11-18 14:11:28,499 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-11-18 14:11:29,838 WARN L180 SmtUtils]: Spent 886.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2018-11-18 14:11:30,502 WARN L180 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-11-18 14:11:33,318 WARN L180 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 286 DAG size of output: 264 [2018-11-18 14:11:33,720 WARN L180 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-11-18 14:11:35,116 WARN L180 SmtUtils]: Spent 889.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2018-11-18 14:11:36,229 WARN L180 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-11-18 14:11:42,145 WARN L180 SmtUtils]: Spent 4.76 s on a formula simplification. DAG size of input: 346 DAG size of output: 298 [2018-11-18 14:11:43,676 WARN L180 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 134 [2018-11-18 14:11:45,199 WARN L180 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 201 [2018-11-18 14:11:45,781 WARN L180 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2018-11-18 14:11:47,421 WARN L180 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 146 [2018-11-18 14:11:47,836 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-11-18 14:11:48,391 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-11-18 14:11:50,630 WARN L180 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 149 [2018-11-18 14:11:51,914 WARN L180 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 173 [2018-11-18 14:11:52,811 WARN L180 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-11-18 14:11:54,785 WARN L180 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 180 DAG size of output: 149 [2018-11-18 14:11:55,381 WARN L180 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-11-18 14:11:56,034 WARN L180 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-11-18 14:11:56,576 WARN L180 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-11-18 14:11:57,153 WARN L180 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 125 [2018-11-18 14:12:01,342 WARN L180 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 316 DAG size of output: 290 [2018-11-18 14:12:03,094 WARN L180 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 141 [2018-11-18 14:12:04,641 WARN L180 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 123 [2018-11-18 14:12:07,142 WARN L180 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 348 DAG size of output: 241 [2018-11-18 14:12:07,628 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-11-18 14:12:09,088 WARN L180 SmtUtils]: Spent 967.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2018-11-18 14:12:10,455 WARN L180 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 154 [2018-11-18 14:12:13,614 WARN L180 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 292 DAG size of output: 266 [2018-11-18 14:12:15,173 WARN L180 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2018-11-18 14:12:17,044 WARN L180 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2018-11-18 14:12:18,544 WARN L180 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2018-11-18 14:12:24,341 WARN L180 SmtUtils]: Spent 4.57 s on a formula simplification. DAG size of input: 346 DAG size of output: 298 [2018-11-18 14:12:25,919 WARN L180 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2018-11-18 14:12:28,666 WARN L180 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 289 DAG size of output: 244 [2018-11-18 14:12:30,484 WARN L180 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 145 [2018-11-18 14:12:33,652 WARN L180 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 294 DAG size of output: 272 [2018-11-18 14:12:35,000 WARN L180 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 131 [2018-11-18 14:12:36,603 WARN L180 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2018-11-18 14:12:37,073 WARN L180 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2018-11-18 14:12:37,719 WARN L180 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2018-11-18 14:12:41,608 WARN L180 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 274 [2018-11-18 14:12:46,986 WARN L180 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 313 DAG size of output: 291 [2018-11-18 14:12:48,940 WARN L180 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 158 [2018-11-18 14:12:53,760 WARN L180 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 305 DAG size of output: 283 [2018-11-18 14:12:55,206 WARN L180 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 146 [2018-11-18 14:12:56,410 WARN L180 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 123 [2018-11-18 14:12:57,124 WARN L180 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-11-18 14:12:57,936 WARN L180 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-11-18 14:12:58,369 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-11-18 14:12:58,876 WARN L180 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-11-18 14:12:59,256 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-11-18 14:12:59,814 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 131 [2018-11-18 14:13:04,084 WARN L180 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 316 DAG size of output: 290 [2018-11-18 14:13:06,627 WARN L180 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 286 DAG size of output: 261 [2018-11-18 14:13:09,147 WARN L180 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 283 DAG size of output: 258 [2018-11-18 14:13:13,859 WARN L180 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 316 DAG size of output: 294 [2018-11-18 14:13:15,639 WARN L180 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 149 [2018-11-18 14:13:17,840 WARN L180 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 249 [2018-11-18 14:13:22,613 WARN L180 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 317 DAG size of output: 295 [2018-11-18 14:13:24,078 WARN L180 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 135 [2018-11-18 14:13:25,225 WARN L180 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 108 [2018-11-18 14:13:25,611 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-11-18 14:13:26,896 WARN L180 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2018-11-18 14:13:27,452 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-11-18 14:13:28,835 WARN L180 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2018-11-18 14:13:30,242 WARN L180 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-11-18 14:13:31,766 WARN L180 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2018-11-18 14:13:33,122 WARN L180 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2018-11-18 14:13:38,856 WARN L180 SmtUtils]: Spent 4.40 s on a formula simplification. DAG size of input: 346 DAG size of output: 298 [2018-11-18 14:13:41,869 WARN L180 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 289 DAG size of output: 244 [2018-11-18 14:13:43,254 WARN L180 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-11-18 14:13:44,755 WARN L180 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 156 [2018-11-18 14:13:48,553 WARN L180 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 316 DAG size of output: 294 [2018-11-18 14:13:49,687 WARN L180 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-11-18 14:13:51,642 WARN L180 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 229 [2018-11-18 14:13:53,105 WARN L180 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 142 [2018-11-18 14:13:54,204 WARN L180 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 122 [2018-11-18 14:13:54,579 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-11-18 14:13:55,089 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-11-18 14:14:00,998 WARN L180 SmtUtils]: Spent 2.94 s on a formula simplification. DAG size of input: 313 DAG size of output: 291 [2018-11-18 14:14:03,629 WARN L180 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 269 [2018-11-18 14:14:05,598 WARN L180 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 168 [2018-11-18 14:14:09,932 WARN L180 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 319 DAG size of output: 297 [2018-11-18 14:14:12,054 WARN L180 SmtUtils]: Spent 917.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2018-11-18 14:14:15,129 WARN L180 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 293 DAG size of output: 271 [2018-11-18 14:14:16,630 WARN L180 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 152 [2018-11-18 14:14:17,953 WARN L180 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 132 [2018-11-18 14:14:18,592 WARN L180 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-11-18 14:14:19,279 WARN L180 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2018-11-18 14:14:20,104 WARN L180 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-11-18 14:14:21,064 WARN L180 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 137 [2018-11-18 14:14:25,819 WARN L180 SmtUtils]: Spent 3.73 s on a formula simplification. DAG size of input: 316 DAG size of output: 290 [2018-11-18 14:14:28,925 WARN L180 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 283 DAG size of output: 258 [2018-11-18 14:14:34,517 WARN L180 SmtUtils]: Spent 3.60 s on a formula simplification. DAG size of input: 316 DAG size of output: 294 [2018-11-18 14:14:37,309 WARN L180 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 272 [2018-11-18 14:14:39,094 WARN L180 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 157 [2018-11-18 14:14:42,251 WARN L180 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 288 DAG size of output: 266 [2018-11-18 14:14:47,364 WARN L180 SmtUtils]: Spent 3.39 s on a formula simplification. DAG size of input: 331 DAG size of output: 309 [2018-11-18 14:14:49,940 WARN L180 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 277 DAG size of output: 252 [2018-11-18 14:14:52,357 WARN L180 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 268 [2018-11-18 14:14:54,946 WARN L180 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 246 [2018-11-18 14:14:59,078 WARN L180 SmtUtils]: Spent 2.59 s on a formula simplification. DAG size of input: 308 DAG size of output: 286 [2018-11-18 14:15:00,663 WARN L180 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 143 [2018-11-18 14:15:02,171 WARN L180 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 126 [2018-11-18 14:15:03,686 WARN L180 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2018-11-18 14:15:05,335 WARN L180 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 245 [2018-11-18 14:15:06,686 WARN L180 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2018-11-18 14:15:08,116 WARN L180 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2018-11-18 14:15:09,385 WARN L180 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2018-11-18 14:15:12,771 WARN L180 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 214 [2018-11-18 14:15:15,847 WARN L180 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 289 DAG size of output: 244 [2018-11-18 14:15:17,234 WARN L180 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-11-18 14:15:18,616 WARN L180 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 167 [2018-11-18 14:15:23,514 WARN L180 SmtUtils]: Spent 2.83 s on a formula simplification. DAG size of input: 323 DAG size of output: 300 [2018-11-18 14:15:24,600 WARN L180 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-11-18 14:15:27,000 WARN L180 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 232 [2018-11-18 14:15:28,226 WARN L180 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-11-18 14:15:29,524 WARN L180 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2018-11-18 14:15:30,894 WARN L180 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 153 [2018-11-18 14:15:32,313 WARN L180 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 316 DAG size of output: 136 [2018-11-18 14:15:39,494 WARN L180 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 313 DAG size of output: 291 [2018-11-18 14:15:41,823 WARN L180 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 269 [2018-11-18 14:15:43,392 WARN L180 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 174 [2018-11-18 14:15:48,406 WARN L180 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 326 DAG size of output: 303 [2018-11-18 14:15:50,290 WARN L180 SmtUtils]: Spent 880.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2018-11-18 14:15:54,122 WARN L180 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 298 DAG size of output: 276 [2018-11-18 14:15:56,330 WARN L180 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 264 [2018-11-18 14:15:58,735 WARN L180 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2018-11-18 14:16:00,380 WARN L180 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 160 [2018-11-18 14:16:01,918 WARN L180 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 144 [2018-11-18 14:16:02,390 WARN L180 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-11-18 14:16:02,968 WARN L180 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-11-18 14:16:04,385 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 143 [2018-11-18 14:16:09,283 WARN L180 SmtUtils]: Spent 3.67 s on a formula simplification. DAG size of input: 316 DAG size of output: 290 [2018-11-18 14:16:12,484 WARN L180 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 283 DAG size of output: 258 [2018-11-18 14:16:18,031 WARN L180 SmtUtils]: Spent 3.45 s on a formula simplification. DAG size of input: 316 DAG size of output: 294 [2018-11-18 14:16:20,541 WARN L180 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 272 [2018-11-18 14:16:22,123 WARN L180 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 168 [2018-11-18 14:16:26,214 WARN L180 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 295 DAG size of output: 272 [2018-11-18 14:16:32,654 WARN L180 SmtUtils]: Spent 3.88 s on a formula simplification. DAG size of input: 335 DAG size of output: 312 [2018-11-18 14:16:35,394 WARN L180 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 277 DAG size of output: 252 [2018-11-18 14:16:37,855 WARN L180 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 268 [2018-11-18 14:16:40,669 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 274 DAG size of output: 249 [2018-11-18 14:16:45,647 WARN L180 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 310 DAG size of output: 288 [2018-11-18 14:16:49,016 WARN L180 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 280 DAG size of output: 255 [2018-11-18 14:16:51,700 WARN L180 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 270 [2018-11-18 14:16:54,144 WARN L180 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 266 [2018-11-18 14:16:55,959 WARN L180 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 359 DAG size of output: 154 [2018-11-18 14:16:57,873 WARN L180 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 140 [2018-11-18 14:16:59,403 WARN L180 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2018-11-18 14:17:01,100 WARN L180 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2018-11-18 14:17:02,465 WARN L180 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2018-11-18 14:17:03,960 WARN L180 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2018-11-18 14:17:05,204 WARN L180 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2018-11-18 14:17:08,333 WARN L180 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 188 [2018-11-18 14:17:13,648 WARN L180 SmtUtils]: Spent 3.72 s on a formula simplification. DAG size of input: 311 DAG size of output: 292 [2018-11-18 14:17:15,146 WARN L180 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-11-18 14:17:16,772 WARN L180 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 175 [2018-11-18 14:17:24,071 WARN L180 SmtUtils]: Spent 3.61 s on a formula simplification. DAG size of input: 330 DAG size of output: 284 [2018-11-18 14:17:25,497 WARN L180 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-11-18 14:17:28,560 WARN L180 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 280 DAG size of output: 235 [2018-11-18 14:17:30,339 WARN L180 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-11-18 14:17:31,957 WARN L180 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2018-11-18 14:17:33,399 WARN L180 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 341 DAG size of output: 164 [2018-11-18 14:17:34,848 WARN L180 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 150 [2018-11-18 14:17:41,205 WARN L180 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 177 [2018-11-18 14:17:43,522 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-18 14:17:43,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2018-11-18 14:17:43,523 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:151) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:354) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:382) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:672) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:601) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 49 more [2018-11-18 14:17:43,526 INFO L168 Benchmark]: Toolchain (without parser) took 457145.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.7 MB). Free memory was 948.6 MB in the beginning and 903.6 MB in the end (delta: 45.0 MB). Peak memory consumption was 233.8 MB. Max. memory is 11.5 GB. [2018-11-18 14:17:43,526 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:17:43,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.44 ms. Allocated memory is still 1.0 GB. Free memory was 948.6 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:17:43,526 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.34 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 14:17:43,527 INFO L168 Benchmark]: Boogie Preprocessor took 15.61 ms. Allocated memory is still 1.0 GB. Free memory is still 932.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:17:43,527 INFO L168 Benchmark]: RCFGBuilder took 184.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 932.5 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2018-11-18 14:17:43,527 INFO L168 Benchmark]: TraceAbstraction took 456755.14 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 39.8 MB). Free memory was 1.1 GB in the beginning and 903.6 MB in the end (delta: 225.1 MB). Peak memory consumption was 264.9 MB. Max. memory is 11.5 GB. [2018-11-18 14:17:43,528 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 174.44 ms. Allocated memory is still 1.0 GB. Free memory was 948.6 MB in the beginning and 937.9 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 13.34 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.61 ms. Allocated memory is still 1.0 GB. Free memory is still 932.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 184.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 932.5 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 456755.14 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 39.8 MB). Free memory was 1.1 GB in the beginning and 903.6 MB in the end (delta: 225.1 MB). Peak memory consumption was 264.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...