./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/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 9fdfa874c4a41b156e998d9e6fe5a8270aecd034 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/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 9fdfa874c4a41b156e998d9e6fe5a8270aecd034 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:53:20,426 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:53:20,427 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:53:20,439 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:53:20,440 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:53:20,441 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:53:20,442 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:53:20,444 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:53:20,445 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:53:20,446 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:53:20,447 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:53:20,447 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:53:20,448 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:53:20,449 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:53:20,450 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:53:20,451 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:53:20,452 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:53:20,454 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:53:20,457 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:53:20,459 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:53:20,460 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:53:20,461 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:53:20,463 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:53:20,464 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:53:20,464 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:53:20,465 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:53:20,466 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:53:20,467 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:53:20,468 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:53:20,469 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:53:20,469 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:53:20,470 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:53:20,470 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:53:20,471 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:53:20,473 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:53:20,473 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:53:20,474 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 19:53:20,488 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:53:20,488 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:53:20,489 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:53:20,489 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 19:53:20,489 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 19:53:20,489 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 19:53:20,489 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 19:53:20,490 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 19:53:20,490 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 19:53:20,490 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 19:53:20,490 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 19:53:20,491 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:53:20,492 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 19:53:20,492 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:53:20,493 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 19:53:20,493 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:53:20,493 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:53:20,493 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:53:20,493 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:53:20,493 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 19:53:20,494 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:53:20,494 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:53:20,494 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:53:20,494 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:53:20,494 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:53:20,494 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:53:20,495 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:53:20,495 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:53:20,495 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:53:20,495 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:53:20,495 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 19:53:20,495 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:53:20,496 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:53:20,496 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:53:20,496 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_aa588889-aa08-43af-b65c-fc44fca3bb74/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 -> 9fdfa874c4a41b156e998d9e6fe5a8270aecd034 [2018-10-26 19:53:20,526 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:53:20,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:53:20,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:53:20,550 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:53:20,551 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:53:20,551 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/../../sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i [2018-10-26 19:53:20,618 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/data/54e724a50/71cdcad95bf84daba5c7d9f1b8f01819/FLAG9f0d1bb44 [2018-10-26 19:53:21,087 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:53:21,091 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i [2018-10-26 19:53:21,106 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/data/54e724a50/71cdcad95bf84daba5c7d9f1b8f01819/FLAG9f0d1bb44 [2018-10-26 19:53:21,122 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/data/54e724a50/71cdcad95bf84daba5c7d9f1b8f01819 [2018-10-26 19:53:21,128 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:53:21,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 19:53:21,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:53:21,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:53:21,139 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:53:21,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:53:21" (1/1) ... [2018-10-26 19:53:21,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db94763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:21, skipping insertion in model container [2018-10-26 19:53:21,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:53:21" (1/1) ... [2018-10-26 19:53:21,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:53:21,212 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:53:21,569 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:53:21,579 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:53:21,614 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:53:21,654 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:53:21,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:21 WrapperNode [2018-10-26 19:53:21,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:53:21,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:53:21,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:53:21,656 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:53:21,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:21" (1/1) ... [2018-10-26 19:53:21,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:21" (1/1) ... [2018-10-26 19:53:21,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:53:21,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:53:21,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:53:21,785 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:53:21,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:21" (1/1) ... [2018-10-26 19:53:21,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:21" (1/1) ... [2018-10-26 19:53:21,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:21" (1/1) ... [2018-10-26 19:53:21,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:21" (1/1) ... [2018-10-26 19:53:21,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:21" (1/1) ... [2018-10-26 19:53:21,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:21" (1/1) ... [2018-10-26 19:53:21,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:21" (1/1) ... [2018-10-26 19:53:21,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:53:21,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:53:21,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:53:21,826 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:53:21,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/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 [2018-10-26 19:53:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2018-10-26 19:53:21,881 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2018-10-26 19:53:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 19:53:21,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 19:53:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 19:53:21,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 19:53:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 19:53:21,882 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 19:53:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2018-10-26 19:53:21,882 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2018-10-26 19:53:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:53:21,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:53:22,557 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:53:22,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:53:22 BoogieIcfgContainer [2018-10-26 19:53:22,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:53:22,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:53:22,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:53:22,562 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:53:22,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:53:21" (1/3) ... [2018-10-26 19:53:22,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f53f666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:53:22, skipping insertion in model container [2018-10-26 19:53:22,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:21" (2/3) ... [2018-10-26 19:53:22,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f53f666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:53:22, skipping insertion in model container [2018-10-26 19:53:22,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:53:22" (3/3) ... [2018-10-26 19:53:22,568 INFO L112 eAbstractionObserver]: Analyzing ICFG list_search_false-unreach-call_false-valid-memcleanup.i [2018-10-26 19:53:22,578 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:53:22,586 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:53:22,598 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:53:22,626 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:53:22,627 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:53:22,627 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:53:22,627 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:53:22,627 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:53:22,627 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:53:22,627 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:53:22,628 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:53:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-10-26 19:53:22,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-26 19:53:22,656 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:53:22,656 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:53:22,659 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:53:22,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:22,671 INFO L82 PathProgramCache]: Analyzing trace with hash -2034878889, now seen corresponding path program 1 times [2018-10-26 19:53:22,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 19:53:22,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:22,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:22,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:22,726 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 19:53:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:53:23,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:53:23,091 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 19:53:23,092 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 46 with the following transitions: [2018-10-26 19:53:23,097 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [9], [10], [14], [16], [18], [20], [22], [24], [41], [44], [46], [52], [71], [73], [74], [75], [76], [77], [79], [80], [81], [82], [83], [84], [85], [86], [87], [88], [89] [2018-10-26 19:53:23,157 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 19:53:23,158 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 19:53:23,675 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 19:53:23,677 INFO L272 AbstractInterpreter]: Visited 25 different actions 37 times. Never merged. Never widened. Never found a fixpoint. Largest state had 47 variables. [2018-10-26 19:53:23,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:23,696 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 19:53:24,316 INFO L227 lantSequenceWeakener]: Weakened 36 states. On average, predicates are now at 83.33% of their original sizes. [2018-10-26 19:53:24,317 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 19:53:25,409 INFO L415 sIntCurrentIteration]: We unified 44 AI predicates to 44 [2018-10-26 19:53:25,409 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 19:53:25,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:53:25,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-26 19:53:25,410 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 19:53:25,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-26 19:53:25,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-26 19:53:25,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2018-10-26 19:53:25,424 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 18 states. [2018-10-26 19:53:30,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:53:30,810 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2018-10-26 19:53:30,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-26 19:53:30,811 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2018-10-26 19:53:30,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:53:30,838 INFO L225 Difference]: With dead ends: 106 [2018-10-26 19:53:30,838 INFO L226 Difference]: Without dead ends: 59 [2018-10-26 19:53:30,842 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2018-10-26 19:53:30,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-26 19:53:30,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2018-10-26 19:53:30,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-26 19:53:30,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-10-26 19:53:30,888 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 45 [2018-10-26 19:53:30,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:53:30,889 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-10-26 19:53:30,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-26 19:53:30,889 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-10-26 19:53:30,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-26 19:53:30,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:53:30,890 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:53:30,892 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:53:30,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:30,892 INFO L82 PathProgramCache]: Analyzing trace with hash -404698338, now seen corresponding path program 1 times [2018-10-26 19:53:30,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 19:53:30,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:30,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:30,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:30,894 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 19:53:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:31,057 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:53:31,057 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:53:31,057 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 19:53:31,057 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 49 with the following transitions: [2018-10-26 19:53:31,058 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [9], [10], [14], [16], [18], [20], [22], [24], [41], [44], [46], [52], [56], [58], [61], [67], [73], [74], [75], [76], [77], [79], [80], [81], [82], [83], [84], [85], [86], [87], [88], [89] [2018-10-26 19:53:31,060 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 19:53:31,060 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 19:53:31,228 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-26 19:53:31,229 INFO L272 AbstractInterpreter]: Visited 36 different actions 48 times. Never merged. Never widened. Never found a fixpoint. Largest state had 47 variables. [2018-10-26 19:53:31,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:31,273 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-26 19:53:31,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:53:31,273 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/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 [2018-10-26 19:53:31,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:31,286 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-26 19:53:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:31,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:53:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 19:53:31,483 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 19:53:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:53:31,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-26 19:53:31,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2018-10-26 19:53:31,772 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-26 19:53:31,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:53:31,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:53:31,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:53:31,777 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2018-10-26 19:53:32,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:53:32,042 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2018-10-26 19:53:32,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 19:53:32,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2018-10-26 19:53:32,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:53:32,044 INFO L225 Difference]: With dead ends: 82 [2018-10-26 19:53:32,045 INFO L226 Difference]: Without dead ends: 49 [2018-10-26 19:53:32,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 94 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-10-26 19:53:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-26 19:53:32,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-26 19:53:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-26 19:53:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-10-26 19:53:32,056 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 48 [2018-10-26 19:53:32,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:53:32,056 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-10-26 19:53:32,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:53:32,056 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-10-26 19:53:32,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-26 19:53:32,057 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:53:32,058 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:53:32,058 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:53:32,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:32,058 INFO L82 PathProgramCache]: Analyzing trace with hash -2103989024, now seen corresponding path program 1 times [2018-10-26 19:53:32,059 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 19:53:32,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:32,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:32,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:32,062 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 19:53:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:32,307 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-26 19:53:32,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:53:32,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-26 19:53:32,308 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 19:53:32,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 19:53:32,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 19:53:32,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:53:32,309 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 9 states. [2018-10-26 19:53:32,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:53:32,721 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2018-10-26 19:53:32,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 19:53:32,723 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2018-10-26 19:53:32,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:53:32,724 INFO L225 Difference]: With dead ends: 66 [2018-10-26 19:53:32,724 INFO L226 Difference]: Without dead ends: 57 [2018-10-26 19:53:32,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-10-26 19:53:32,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-26 19:53:32,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2018-10-26 19:53:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-26 19:53:32,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2018-10-26 19:53:32,734 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 48 [2018-10-26 19:53:32,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:53:32,736 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2018-10-26 19:53:32,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 19:53:32,736 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2018-10-26 19:53:32,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-26 19:53:32,737 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:53:32,737 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:53:32,737 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:53:32,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:32,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1797951262, now seen corresponding path program 1 times [2018-10-26 19:53:32,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 19:53:32,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:32,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:32,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:32,741 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 19:53:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-26 19:53:32,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:53:32,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 19:53:32,875 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 19:53:32,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:53:32,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:53:32,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:53:32,876 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 7 states. [2018-10-26 19:53:33,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:53:33,056 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2018-10-26 19:53:33,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 19:53:33,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2018-10-26 19:53:33,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:53:33,059 INFO L225 Difference]: With dead ends: 66 [2018-10-26 19:53:33,059 INFO L226 Difference]: Without dead ends: 53 [2018-10-26 19:53:33,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-10-26 19:53:33,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-26 19:53:33,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-26 19:53:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-26 19:53:33,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-10-26 19:53:33,070 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 48 [2018-10-26 19:53:33,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:53:33,071 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-10-26 19:53:33,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:53:33,071 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-10-26 19:53:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-26 19:53:33,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:53:33,072 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:53:33,072 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:53:33,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:33,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1333266038, now seen corresponding path program 1 times [2018-10-26 19:53:33,073 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 19:53:33,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:33,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:33,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:33,074 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 19:53:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 19:53:34,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:53:34,106 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 19:53:34,107 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 53 with the following transitions: [2018-10-26 19:53:34,107 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [9], [10], [14], [16], [18], [20], [22], [24], [41], [44], [46], [52], [56], [58], [61], [67], [69], [73], [74], [75], [76], [77], [79], [80], [81], [82], [83], [84], [85], [86], [87], [88], [89] [2018-10-26 19:53:34,110 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 19:53:34,110 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 19:53:34,652 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-26 19:53:34,652 INFO L272 AbstractInterpreter]: Visited 38 different actions 83 times. Merged at 12 different actions 25 times. Never widened. Found 5 fixpoints after 5 different actions. Largest state had 47 variables. [2018-10-26 19:53:34,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:34,692 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-26 19:53:34,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:53:34,692 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/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 [2018-10-26 19:53:34,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:34,709 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-26 19:53:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:34,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:53:34,843 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 19:53:34,845 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:34,924 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:34,924 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-10-26 19:53:35,500 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 19:53:35,520 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 19:53:35,520 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:35,543 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:35,623 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:35,624 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-10-26 19:53:36,068 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:53:36,080 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:53:36,080 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:36,083 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:36,146 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:53:36,150 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:53:36,150 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:36,153 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:36,163 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2018-10-26 19:53:36,164 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:49, output treesize:41 [2018-10-26 19:53:36,360 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:53:36,361 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:53:36,362 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 10 [2018-10-26 19:53:36,362 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:36,379 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 41 [2018-10-26 19:53:36,383 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2018-10-26 19:53:36,394 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 19 [2018-10-26 19:53:36,394 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-26 19:53:36,403 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:53:36,415 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:53:36,431 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:36,432 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:53, output treesize:33 [2018-10-26 19:53:36,763 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-10-26 19:53:36,764 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:36,774 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:36,774 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:53, output treesize:1 [2018-10-26 19:53:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:53:36,783 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 19:53:37,389 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-10-26 19:53:38,173 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2018-10-26 19:53:38,185 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 19:53:38,185 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:38,197 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-10-26 19:53:38,199 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-10-26 19:53:38,199 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:38,203 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:38,206 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2018-10-26 19:53:38,216 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 26 [2018-10-26 19:53:38,242 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2018-10-26 19:53:38,242 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-10-26 19:53:38,252 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2018-10-26 19:53:38,253 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-10-26 19:53:38,260 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 16 [2018-10-26 19:53:38,261 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-10-26 19:53:38,298 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2018-10-26 19:53:38,298 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:38,300 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 8 [2018-10-26 19:53:38,301 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:38,318 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 19:53:38,333 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 19:53:38,340 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2018-10-26 19:53:38,350 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2018-10-26 19:53:38,389 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-10-26 19:53:38,389 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:38,391 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-10-26 19:53:38,392 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:38,394 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2018-10-26 19:53:38,394 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:38,428 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2018-10-26 19:53:38,428 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 2 xjuncts. [2018-10-26 19:53:38,438 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2018-10-26 19:53:38,440 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-10-26 19:53:38,464 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-26 19:53:38,510 INFO L267 ElimStorePlain]: Start of recursive call 13: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 19:53:38,534 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-10-26 19:53:38,557 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-10-26 19:53:38,558 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 7 variables, input treesize:45, output treesize:43 [2018-10-26 19:53:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:53:38,679 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-26 19:53:38,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16, 15] total 48 [2018-10-26 19:53:38,680 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-26 19:53:38,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-26 19:53:38,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-26 19:53:38,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2079, Unknown=1, NotChecked=0, Total=2256 [2018-10-26 19:53:38,681 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 35 states. [2018-10-26 19:53:41,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:53:41,021 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2018-10-26 19:53:41,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-26 19:53:41,021 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 52 [2018-10-26 19:53:41,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:53:41,023 INFO L225 Difference]: With dead ends: 74 [2018-10-26 19:53:41,023 INFO L226 Difference]: Without dead ends: 58 [2018-10-26 19:53:41,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=473, Invalid=4082, Unknown=1, NotChecked=0, Total=4556 [2018-10-26 19:53:41,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-26 19:53:41,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2018-10-26 19:53:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-26 19:53:41,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-10-26 19:53:41,036 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 52 [2018-10-26 19:53:41,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:53:41,036 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-10-26 19:53:41,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-26 19:53:41,037 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-10-26 19:53:41,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-26 19:53:41,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:53:41,038 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:53:41,038 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:53:41,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:41,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1630674636, now seen corresponding path program 2 times [2018-10-26 19:53:41,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 19:53:41,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:41,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:41,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:41,043 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 19:53:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:42,049 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-10-26 19:53:42,846 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 19:53:42,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:53:42,847 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 19:53:42,847 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-26 19:53:42,847 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-26 19:53:42,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:53:42,847 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/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 [2018-10-26 19:53:42,855 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-26 19:53:42,855 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-26 19:53:42,957 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-26 19:53:42,957 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 19:53:42,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:53:42,975 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 19:53:42,975 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:42,980 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:42,980 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-10-26 19:53:42,989 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 19:53:42,991 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 19:53:42,991 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:42,993 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:42,998 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:42,999 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2018-10-26 19:53:43,089 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:53:43,092 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:53:43,092 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:43,095 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:43,108 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:53:43,110 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:53:43,110 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:43,113 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:43,122 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2018-10-26 19:53:43,122 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:52, output treesize:44 [2018-10-26 19:53:43,249 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:53:43,251 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:53:43,253 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 39 [2018-10-26 19:53:43,253 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:43,269 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 35 [2018-10-26 19:53:43,272 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2018-10-26 19:53:43,281 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 19 [2018-10-26 19:53:43,282 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-26 19:53:43,290 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:53:43,302 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:53:43,320 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:43,320 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:59, output treesize:49 [2018-10-26 19:53:43,831 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:53:43,832 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:53:43,834 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:53:43,834 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2018-10-26 19:53:43,835 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:43,864 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 48 [2018-10-26 19:53:43,872 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:53:43,872 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:43,885 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:43,908 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 30 [2018-10-26 19:53:43,910 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:53:43,911 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:43,916 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:43,937 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 35 [2018-10-26 19:53:43,939 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2018-10-26 19:53:43,949 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 19 [2018-10-26 19:53:43,949 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-10-26 19:53:43,958 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:53:43,971 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:53:43,995 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:43,995 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:97, output treesize:110 [2018-10-26 19:53:44,636 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-10-26 19:53:44,636 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:44,638 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:44,639 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:147, output treesize:1 [2018-10-26 19:53:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 19:53:44,657 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 19:53:44,774 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-10-26 19:53:47,100 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 175 [2018-10-26 19:53:47,204 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 19:53:47,204 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:47,219 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 148 [2018-10-26 19:53:47,223 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 138 [2018-10-26 19:53:47,223 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:47,230 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:47,237 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:47,267 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 115 [2018-10-26 19:53:47,301 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 19:53:47,301 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:47,322 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 92 [2018-10-26 19:53:47,326 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 82 [2018-10-26 19:53:47,327 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:47,337 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:47,343 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:47,351 INFO L267 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 2 dim-2 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2018-10-26 19:53:47,351 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 12 variables, input treesize:213, output treesize:97 [2018-10-26 19:53:49,393 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 206 treesize of output 177 [2018-10-26 19:53:49,464 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 19:53:49,464 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:49,487 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 154 [2018-10-26 19:53:49,492 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 138 [2018-10-26 19:53:49,492 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:49,502 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:49,518 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:53:49,563 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 112 [2018-10-26 19:53:49,608 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 19:53:49,609 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:49,623 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 86 [2018-10-26 19:53:49,626 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 70 [2018-10-26 19:53:49,627 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:49,638 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:49,696 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:49,707 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 112 [2018-10-26 19:53:49,742 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 19:53:49,742 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:49,757 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 86 [2018-10-26 19:53:49,761 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 70 [2018-10-26 19:53:49,762 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:49,769 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:49,778 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:50,008 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:53:50,009 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: alternation not yet supported at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:347) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:264) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:216) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) 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) [2018-10-26 19:53:50,013 INFO L168 Benchmark]: Toolchain (without parser) took 28883.42 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 354.4 MB). Free memory was 951.8 MB in the beginning and 990.5 MB in the end (delta: -38.8 MB). Peak memory consumption was 315.7 MB. Max. memory is 11.5 GB. [2018-10-26 19:53:50,014 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 980.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 19:53:50,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 523.99 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 930.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-10-26 19:53:50,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 128.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 930.3 MB in the beginning and 1.2 GB in the end (delta: -223.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2018-10-26 19:53:50,015 INFO L168 Benchmark]: Boogie Preprocessor took 40.65 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 19:53:50,027 INFO L168 Benchmark]: RCFGBuilder took 732.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2018-10-26 19:53:50,028 INFO L168 Benchmark]: TraceAbstraction took 27453.47 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 199.8 MB). Free memory was 1.1 GB in the beginning and 990.5 MB in the end (delta: 134.2 MB). Peak memory consumption was 334.0 MB. Max. memory is 11.5 GB. [2018-10-26 19:53:50,030 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 980.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 523.99 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 930.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 128.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 930.3 MB in the beginning and 1.2 GB in the end (delta: -223.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.65 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 732.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 27453.47 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 199.8 MB). Free memory was 1.1 GB in the beginning and 990.5 MB in the end (delta: 134.2 MB). Peak memory consumption was 334.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: alternation not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: alternation not yet supported: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:347) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:53:52,189 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:53:52,190 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:53:52,201 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:53:52,202 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:53:52,203 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:53:52,204 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:53:52,206 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:53:52,208 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:53:52,209 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:53:52,209 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:53:52,210 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:53:52,211 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:53:52,212 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:53:52,213 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:53:52,214 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:53:52,215 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:53:52,217 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:53:52,219 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:53:52,221 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:53:52,222 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:53:52,230 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:53:52,232 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:53:52,233 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:53:52,233 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:53:52,234 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:53:52,235 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:53:52,236 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:53:52,240 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:53:52,241 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:53:52,241 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:53:52,241 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:53:52,242 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:53:52,242 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:53:52,243 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:53:52,246 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:53:52,246 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 19:53:52,265 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:53:52,271 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:53:52,272 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:53:52,273 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 19:53:52,273 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 19:53:52,274 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 19:53:52,274 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 19:53:52,275 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 19:53:52,276 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:53:52,276 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 19:53:52,276 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 19:53:52,276 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:53:52,276 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:53:52,276 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:53:52,277 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:53:52,277 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 19:53:52,277 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 19:53:52,277 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 19:53:52,277 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:53:52,278 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:53:52,278 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:53:52,278 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:53:52,278 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:53:52,278 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:53:52,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:53:52,279 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:53:52,279 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:53:52,282 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:53:52,283 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 19:53:52,283 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:53:52,283 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 19:53:52,283 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 19:53:52,283 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_aa588889-aa08-43af-b65c-fc44fca3bb74/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 -> 9fdfa874c4a41b156e998d9e6fe5a8270aecd034 [2018-10-26 19:53:52,335 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:53:52,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:53:52,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:53:52,356 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:53:52,356 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:53:52,357 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/../../sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i [2018-10-26 19:53:52,421 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/data/70134163d/e421d4b144de420eadb338fc7c9415c2/FLAGa0c3b2ca8 [2018-10-26 19:53:52,917 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:53:52,918 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i [2018-10-26 19:53:52,928 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/data/70134163d/e421d4b144de420eadb338fc7c9415c2/FLAGa0c3b2ca8 [2018-10-26 19:53:52,941 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/data/70134163d/e421d4b144de420eadb338fc7c9415c2 [2018-10-26 19:53:52,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:53:52,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 19:53:52,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:53:52,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:53:52,956 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:53:52,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:53:52" (1/1) ... [2018-10-26 19:53:52,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c9aa741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:52, skipping insertion in model container [2018-10-26 19:53:52,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:53:52" (1/1) ... [2018-10-26 19:53:52,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:53:53,029 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:53:53,374 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:53:53,389 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:53:53,448 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:53:53,497 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:53:53,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:53 WrapperNode [2018-10-26 19:53:53,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:53:53,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:53:53,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:53:53,500 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:53:53,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:53" (1/1) ... [2018-10-26 19:53:53,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:53" (1/1) ... [2018-10-26 19:53:53,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:53:53,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:53:53,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:53:53,557 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:53:53,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:53" (1/1) ... [2018-10-26 19:53:53,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:53" (1/1) ... [2018-10-26 19:53:53,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:53" (1/1) ... [2018-10-26 19:53:53,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:53" (1/1) ... [2018-10-26 19:53:53,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:53" (1/1) ... [2018-10-26 19:53:53,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:53" (1/1) ... [2018-10-26 19:53:53,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:53" (1/1) ... [2018-10-26 19:53:53,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:53:53,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:53:53,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:53:53,673 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:53:53,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/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 [2018-10-26 19:53:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2018-10-26 19:53:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2018-10-26 19:53:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 19:53:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 19:53:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 19:53:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 19:53:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 19:53:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 19:53:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2018-10-26 19:53:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2018-10-26 19:53:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:53:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:53:54,269 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:53:54,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:53:54 BoogieIcfgContainer [2018-10-26 19:53:54,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:53:54,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:53:54,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:53:54,275 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:53:54,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:53:52" (1/3) ... [2018-10-26 19:53:54,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ba94ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:53:54, skipping insertion in model container [2018-10-26 19:53:54,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:53:53" (2/3) ... [2018-10-26 19:53:54,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ba94ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:53:54, skipping insertion in model container [2018-10-26 19:53:54,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:53:54" (3/3) ... [2018-10-26 19:53:54,278 INFO L112 eAbstractionObserver]: Analyzing ICFG list_search_false-unreach-call_false-valid-memcleanup.i [2018-10-26 19:53:54,290 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:53:54,298 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:53:54,313 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:53:54,340 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:53:54,341 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:53:54,341 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:53:54,341 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:53:54,341 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:53:54,341 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:53:54,341 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:53:54,341 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:53:54,342 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:53:54,357 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-10-26 19:53:54,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-26 19:53:54,364 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:53:54,365 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:53:54,368 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:53:54,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:54,374 INFO L82 PathProgramCache]: Analyzing trace with hash -2034878889, now seen corresponding path program 1 times [2018-10-26 19:53:54,380 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 19:53:54,381 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/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 [2018-10-26 19:53:54,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:54,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:53:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-26 19:53:54,604 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (2)] Exception during sending of exit command (exit): Broken pipe [2018-10-26 19:53:54,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:53:54,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 19:53:54,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 19:53:54,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 19:53:54,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 19:53:54,630 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-10-26 19:53:54,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:53:54,656 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2018-10-26 19:53:54,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 19:53:54,657 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 45 [2018-10-26 19:53:54,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:53:54,668 INFO L225 Difference]: With dead ends: 61 [2018-10-26 19:53:54,668 INFO L226 Difference]: Without dead ends: 34 [2018-10-26 19:53:54,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 19:53:54,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-26 19:53:54,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-26 19:53:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-26 19:53:54,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-10-26 19:53:54,732 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 45 [2018-10-26 19:53:54,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:53:54,735 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-10-26 19:53:54,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 19:53:54,735 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-10-26 19:53:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-26 19:53:54,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:53:54,740 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:53:54,740 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:53:54,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:54,741 INFO L82 PathProgramCache]: Analyzing trace with hash -404698338, now seen corresponding path program 1 times [2018-10-26 19:53:54,741 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 19:53:54,742 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/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 [2018-10-26 19:53:54,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:54,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:53:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 19:53:55,083 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 19:53:55,350 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-26 19:53:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:53:55,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:53:55,377 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/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 [2018-10-26 19:53:55,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:55,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:53:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 19:53:55,506 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 19:53:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:53:55,906 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-10-26 19:53:55,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6] total 7 [2018-10-26 19:53:55,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:53:55,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:53:55,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:53:55,909 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2018-10-26 19:53:56,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:53:56,560 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2018-10-26 19:53:56,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 19:53:56,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2018-10-26 19:53:56,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:53:56,562 INFO L225 Difference]: With dead ends: 75 [2018-10-26 19:53:56,563 INFO L226 Difference]: Without dead ends: 50 [2018-10-26 19:53:56,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-10-26 19:53:56,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-26 19:53:56,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2018-10-26 19:53:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-26 19:53:56,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2018-10-26 19:53:56,576 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 48 [2018-10-26 19:53:56,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:53:56,576 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2018-10-26 19:53:56,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:53:56,577 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2018-10-26 19:53:56,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-26 19:53:56,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:53:56,578 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:53:56,579 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:53:56,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:56,581 INFO L82 PathProgramCache]: Analyzing trace with hash -2103989024, now seen corresponding path program 1 times [2018-10-26 19:53:56,581 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 19:53:56,581 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/cvc4nyu Starting monitored process 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 19:53:56,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:56,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:53:56,919 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 19:53:56,923 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 19:53:56,923 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:56,926 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:56,937 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:56,937 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-10-26 19:53:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-26 19:53:57,171 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 19:53:57,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:53:57,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-26 19:53:57,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 19:53:57,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 19:53:57,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:53:57,174 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2018-10-26 19:53:57,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:53:57,594 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2018-10-26 19:53:57,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 19:53:57,597 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2018-10-26 19:53:57,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:53:57,600 INFO L225 Difference]: With dead ends: 56 [2018-10-26 19:53:57,600 INFO L226 Difference]: Without dead ends: 47 [2018-10-26 19:53:57,601 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-10-26 19:53:57,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-26 19:53:57,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-10-26 19:53:57,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-26 19:53:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2018-10-26 19:53:57,612 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 48 [2018-10-26 19:53:57,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:53:57,612 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2018-10-26 19:53:57,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 19:53:57,613 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2018-10-26 19:53:57,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-26 19:53:57,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:53:57,614 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:53:57,615 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:53:57,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:57,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1797951262, now seen corresponding path program 1 times [2018-10-26 19:53:57,617 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 19:53:57,617 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/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 [2018-10-26 19:53:57,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:57,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:53:57,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-26 19:53:57,791 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 19:53:57,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:53:57,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:53:57,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:53:57,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:53:57,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:53:57,794 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 6 states. [2018-10-26 19:53:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:53:57,933 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2018-10-26 19:53:57,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:53:57,934 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2018-10-26 19:53:57,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:53:57,935 INFO L225 Difference]: With dead ends: 57 [2018-10-26 19:53:57,935 INFO L226 Difference]: Without dead ends: 44 [2018-10-26 19:53:57,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:53:57,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-26 19:53:57,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-10-26 19:53:57,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-26 19:53:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2018-10-26 19:53:57,946 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 48 [2018-10-26 19:53:57,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:53:57,948 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2018-10-26 19:53:57,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:53:57,948 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2018-10-26 19:53:57,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-26 19:53:57,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:53:57,950 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:53:57,950 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:53:57,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:57,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1333266038, now seen corresponding path program 1 times [2018-10-26 19:53:57,951 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 19:53:57,951 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/cvc4nyu Starting monitored process 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 19:53:57,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:58,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:53:58,259 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 19:53:58,260 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:58,268 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:58,269 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-10-26 19:53:58,296 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 19:53:58,304 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 19:53:58,304 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:58,315 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:58,322 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:58,322 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2018-10-26 19:53:58,563 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:53:58,569 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:53:58,570 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:58,581 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:58,674 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:53:58,678 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:53:58,678 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:58,683 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:58,707 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2018-10-26 19:53:58,707 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:49, output treesize:41 [2018-10-26 19:53:58,885 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:53:58,886 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:53:58,888 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 10 [2018-10-26 19:53:58,888 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:58,921 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 37 [2018-10-26 19:53:58,926 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2018-10-26 19:53:58,945 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 19 [2018-10-26 19:53:58,946 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-26 19:53:58,992 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:53:59,025 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:53:59,066 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:59,066 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:60, output treesize:38 [2018-10-26 19:53:59,530 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-10-26 19:53:59,530 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:53:59,536 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:53:59,537 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:1 [2018-10-26 19:53:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:53:59,544 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 19:53:59,701 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-10-26 19:54:00,805 WARN L179 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2018-10-26 19:54:01,102 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-10-26 19:54:01,687 WARN L179 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-10-26 19:54:02,142 WARN L179 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-10-26 19:54:02,354 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:54:02,354 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/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 [2018-10-26 19:54:02,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:54:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:54:02,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:54:02,500 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 19:54:02,500 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:02,572 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:02,572 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-10-26 19:54:02,634 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 19:54:02,637 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 19:54:02,637 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:02,639 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:02,644 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:02,644 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2018-10-26 19:54:02,836 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:54:02,844 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:02,845 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:02,851 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:02,908 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:54:02,913 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:02,913 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:02,918 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:02,985 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2018-10-26 19:54:02,985 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:49, output treesize:41 [2018-10-26 19:54:03,053 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:03,055 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:03,056 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 10 [2018-10-26 19:54:03,057 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:03,088 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 41 [2018-10-26 19:54:03,092 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2018-10-26 19:54:03,114 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 19 [2018-10-26 19:54:03,114 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-26 19:54:03,149 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:54:03,181 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:54:03,245 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:03,245 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:53, output treesize:33 [2018-10-26 19:54:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:54:03,666 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 19:54:03,815 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2018-10-26 19:54:04,394 WARN L179 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2018-10-26 19:54:04,722 WARN L179 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-10-26 19:54:05,249 WARN L179 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-10-26 19:54:05,698 WARN L179 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-10-26 19:54:05,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:54:05,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 25 [2018-10-26 19:54:05,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-26 19:54:05,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-26 19:54:05,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=812, Unknown=1, NotChecked=0, Total=930 [2018-10-26 19:54:05,855 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 25 states. [2018-10-26 19:54:06,769 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-10-26 19:54:07,822 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-10-26 19:54:09,109 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2018-10-26 19:54:09,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:54:09,381 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2018-10-26 19:54:09,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-26 19:54:09,382 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 52 [2018-10-26 19:54:09,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:54:09,384 INFO L225 Difference]: With dead ends: 65 [2018-10-26 19:54:09,384 INFO L226 Difference]: Without dead ends: 56 [2018-10-26 19:54:09,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 109 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=257, Invalid=1634, Unknown=1, NotChecked=0, Total=1892 [2018-10-26 19:54:09,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-26 19:54:09,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2018-10-26 19:54:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-26 19:54:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2018-10-26 19:54:09,397 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 52 [2018-10-26 19:54:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:54:09,397 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2018-10-26 19:54:09,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-26 19:54:09,398 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2018-10-26 19:54:09,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-26 19:54:09,399 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:54:09,399 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:54:09,399 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:54:09,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:54:09,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1726293048, now seen corresponding path program 1 times [2018-10-26 19:54:09,400 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 19:54:09,400 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/cvc4nyu Starting monitored process 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 19:54:09,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:54:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:54:09,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:54:09,654 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:54:09,656 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:09,656 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:09,659 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:09,664 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:09,665 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-10-26 19:54:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:54:09,830 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 19:54:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:54:10,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:54:10,463 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:54:10,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:54:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:54:10,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:54:10,596 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:54:10,598 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:10,598 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:10,600 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:10,606 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:10,606 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-10-26 19:54:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:54:10,613 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 19:54:10,981 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-10-26 19:54:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:54:11,144 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-10-26 19:54:11,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12] total 20 [2018-10-26 19:54:11,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-26 19:54:11,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-26 19:54:11,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2018-10-26 19:54:11,145 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 20 states. [2018-10-26 19:54:12,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:54:12,480 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2018-10-26 19:54:12,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-26 19:54:12,480 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2018-10-26 19:54:12,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:54:12,481 INFO L225 Difference]: With dead ends: 66 [2018-10-26 19:54:12,482 INFO L226 Difference]: Without dead ends: 53 [2018-10-26 19:54:12,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2018-10-26 19:54:12,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-26 19:54:12,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2018-10-26 19:54:12,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-26 19:54:12,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2018-10-26 19:54:12,492 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 52 [2018-10-26 19:54:12,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:54:12,495 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2018-10-26 19:54:12,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-26 19:54:12,496 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2018-10-26 19:54:12,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-26 19:54:12,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:54:12,497 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:54:12,497 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:54:12,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:54:12,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1630674636, now seen corresponding path program 2 times [2018-10-26 19:54:12,498 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 19:54:12,498 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 19:54:12,527 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-10-26 19:54:12,894 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 19:54:12,895 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 19:54:12,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:54:12,989 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 19:54:12,990 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:13,003 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:13,003 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-10-26 19:54:13,021 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 19:54:13,023 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 19:54:13,023 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:13,028 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:13,036 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:13,036 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2018-10-26 19:54:13,172 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:54:13,176 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:13,177 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:13,182 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:13,230 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:54:13,235 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:13,235 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:13,240 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:13,280 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2018-10-26 19:54:13,280 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:55, output treesize:47 [2018-10-26 19:54:13,444 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:13,447 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:13,448 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 39 [2018-10-26 19:54:13,449 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:13,500 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 35 [2018-10-26 19:54:13,504 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2018-10-26 19:54:13,521 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 19 [2018-10-26 19:54:13,521 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-26 19:54:13,540 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:54:13,566 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:54:13,614 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:13,614 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:62, output treesize:53 [2018-10-26 19:54:14,343 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:14,355 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 19:54:14,357 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2018-10-26 19:54:14,357 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:14,687 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 33 [2018-10-26 19:54:14,693 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2018-10-26 19:54:14,715 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 19 [2018-10-26 19:54:14,716 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-26 19:54:14,751 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:54:14,795 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:54:14,899 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:14,910 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 69 [2018-10-26 19:54:14,916 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2018-10-26 19:54:14,917 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:14,944 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:14,955 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:14,959 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 65 [2018-10-26 19:54:14,965 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2018-10-26 19:54:14,965 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:14,993 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:15,085 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:15,096 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 22 [2018-10-26 19:54:15,101 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:15,101 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:15,114 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:15,196 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:15,197 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 9 variables, input treesize:94, output treesize:79 [2018-10-26 19:54:16,236 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-10-26 19:54:16,236 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:16,238 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:16,239 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:116, output treesize:1 [2018-10-26 19:54:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 19:54:16,256 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 19:54:16,617 WARN L179 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-26 19:54:18,373 WARN L179 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-10-26 19:54:18,726 WARN L179 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-10-26 19:54:19,340 WARN L179 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-26 19:54:19,835 WARN L179 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-10-26 19:54:22,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:54:22,543 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:54:22,550 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 19:54:22,691 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 19:54:22,691 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 19:54:22,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:54:22,704 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 19:54:22,704 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:22,709 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:22,710 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-10-26 19:54:22,823 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 19:54:22,826 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 19:54:22,826 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:22,828 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:22,833 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:22,834 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2018-10-26 19:54:23,172 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:54:23,177 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:23,177 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:23,183 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:23,231 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:54:23,235 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:23,235 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:23,240 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:23,268 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2018-10-26 19:54:23,268 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:55, output treesize:47 [2018-10-26 19:54:23,315 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:23,317 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:23,318 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 41 [2018-10-26 19:54:23,319 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:23,357 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 41 [2018-10-26 19:54:23,361 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2018-10-26 19:54:23,379 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 19 [2018-10-26 19:54:23,379 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-26 19:54:23,400 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:54:23,428 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:54:23,477 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:23,477 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:61, output treesize:50 [2018-10-26 19:54:23,865 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:23,866 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 19:54:23,867 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2018-10-26 19:54:23,867 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:23,996 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:23,997 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 57 [2018-10-26 19:54:24,007 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2018-10-26 19:54:24,008 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:24,042 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:24,129 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 35 [2018-10-26 19:54:24,145 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2018-10-26 19:54:24,171 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 19 [2018-10-26 19:54:24,171 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2018-10-26 19:54:24,204 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:54:24,241 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 19:54:24,317 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:24,325 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 46 [2018-10-26 19:54:24,331 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:24,331 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:24,349 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:24,362 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:24,372 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 50 [2018-10-26 19:54:24,378 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:24,378 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:24,398 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:24,500 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:24,501 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 9 variables, input treesize:89, output treesize:74 [2018-10-26 19:54:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 19:54:25,721 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 19:54:26,036 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-26 19:54:26,207 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-10-26 19:54:26,846 WARN L179 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-10-26 19:54:27,243 WARN L179 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-10-26 19:54:27,876 WARN L179 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-10-26 19:54:28,365 WARN L179 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-10-26 19:54:30,785 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:54:30,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 33 [2018-10-26 19:54:30,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-26 19:54:30,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-26 19:54:30,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1410, Unknown=1, NotChecked=0, Total=1560 [2018-10-26 19:54:30,786 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 33 states. [2018-10-26 19:54:32,449 WARN L179 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2018-10-26 19:54:33,648 WARN L179 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 54 [2018-10-26 19:54:34,466 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2018-10-26 19:54:36,016 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-26 19:54:36,984 WARN L179 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2018-10-26 19:54:37,673 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-10-26 19:54:40,281 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2018-10-26 19:54:41,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:54:41,095 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2018-10-26 19:54:41,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-26 19:54:41,098 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 56 [2018-10-26 19:54:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:54:41,099 INFO L225 Difference]: With dead ends: 74 [2018-10-26 19:54:41,099 INFO L226 Difference]: Without dead ends: 65 [2018-10-26 19:54:41,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 115 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=345, Invalid=2960, Unknown=1, NotChecked=0, Total=3306 [2018-10-26 19:54:41,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-26 19:54:41,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2018-10-26 19:54:41,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-26 19:54:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2018-10-26 19:54:41,120 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 56 [2018-10-26 19:54:41,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:54:41,121 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2018-10-26 19:54:41,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-26 19:54:41,121 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2018-10-26 19:54:41,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-26 19:54:41,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:54:41,122 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:54:41,122 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:54:41,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:54:41,123 INFO L82 PathProgramCache]: Analyzing trace with hash -2023701646, now seen corresponding path program 2 times [2018-10-26 19:54:41,123 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 19:54:41,123 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/cvc4nyu Starting monitored process 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 19:54:41,149 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 19:54:41,443 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 19:54:41,443 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 19:54:41,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:54:41,629 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 19:54:41,629 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:41,637 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:41,637 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-10-26 19:54:41,653 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:54:41,659 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:41,660 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:41,663 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:41,670 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:41,671 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2018-10-26 19:54:41,794 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:54:41,797 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:41,798 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:41,801 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:41,841 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:41,841 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2018-10-26 19:54:41,968 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:41,970 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:41,971 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-10-26 19:54:41,971 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:41,998 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2018-10-26 19:54:42,001 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:42,001 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:42,008 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:42,025 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:42,025 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:54, output treesize:45 [2018-10-26 19:54:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 19:54:42,401 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 19:54:42,644 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-26 19:54:43,335 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-10-26 19:54:43,595 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2018-10-26 19:54:43,720 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-10-26 19:54:55,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:54:55,544 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:54:55,552 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 19:54:55,670 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 19:54:55,670 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 19:54:55,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:54:55,695 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 19:54:55,695 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:55,702 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:55,702 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-10-26 19:54:55,707 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:54:55,710 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:55,710 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:55,712 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:55,720 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:55,720 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2018-10-26 19:54:55,761 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 19:54:55,763 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:55,764 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:55,768 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:55,782 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:55,782 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2018-10-26 19:54:55,791 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:55,792 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 19:54:55,793 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-10-26 19:54:55,793 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:55,817 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2018-10-26 19:54:55,821 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 19:54:55,821 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 19:54:55,829 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:55,842 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 19:54:55,843 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:46, output treesize:37 [2018-10-26 19:54:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 19:54:55,916 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 19:54:56,136 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2018-10-26 19:54:56,362 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-10-26 19:54:56,662 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2018-10-26 19:54:56,775 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-10-26 19:55:07,584 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:55:07,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-26 19:55:07,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-26 19:55:07,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-26 19:55:07,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=527, Unknown=5, NotChecked=0, Total=600 [2018-10-26 19:55:07,585 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 18 states. [2018-10-26 19:55:08,128 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2018-10-26 19:55:08,697 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-10-26 19:55:10,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:55:10,348 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2018-10-26 19:55:10,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-26 19:55:10,349 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2018-10-26 19:55:10,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:55:10,350 INFO L225 Difference]: With dead ends: 69 [2018-10-26 19:55:10,350 INFO L226 Difference]: Without dead ends: 56 [2018-10-26 19:55:10,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=317, Invalid=1748, Unknown=5, NotChecked=0, Total=2070 [2018-10-26 19:55:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-26 19:55:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2018-10-26 19:55:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-26 19:55:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2018-10-26 19:55:10,362 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 56 [2018-10-26 19:55:10,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:55:10,362 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2018-10-26 19:55:10,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-26 19:55:10,363 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2018-10-26 19:55:10,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-26 19:55:10,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:55:10,369 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:55:10,369 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:55:10,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:55:10,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1557928994, now seen corresponding path program 3 times [2018-10-26 19:55:10,369 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 19:55:10,369 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/cvc4nyu Starting monitored process 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 19:55:10,387 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-10-26 19:55:11,244 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-26 19:55:11,245 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-10-26 19:55:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 19:55:12,001 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 19:55:12,025 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,026 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,027 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,028 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,030 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,031 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,035 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,038 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,039 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,039 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,039 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,040 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,040 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,040 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,040 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,041 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,041 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,041 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,042 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,042 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,042 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,043 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,043 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,056 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,056 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,057 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,057 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,057 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,057 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,064 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,065 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,065 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,092 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,092 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,093 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,093 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,093 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,094 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,094 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,094 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,095 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,099 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,099 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,099 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 915131655bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,100 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,100 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 915131655bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,100 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,103 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,103 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,103 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 639499465bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,104 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 639499465bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,104 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,104 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,105 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,105 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 3383626022bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,105 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,105 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,106 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 3383626022bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,106 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,106 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,106 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,107 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,107 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,116 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,117 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,117 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,117 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,117 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,118 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,118 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,118 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,118 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,119 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,119 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,119 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,119 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,120 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,120 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,120 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,120 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,121 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,121 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:55:12 BoogieIcfgContainer [2018-10-26 19:55:12,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:55:12,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 19:55:12,158 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 19:55:12,158 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 19:55:12,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:53:54" (3/4) ... [2018-10-26 19:55:12,163 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 19:55:12,165 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,165 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,165 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,166 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,166 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,166 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,166 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,166 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,166 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,167 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,167 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,171 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,171 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,172 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,172 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,172 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,172 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,172 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,173 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,173 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,173 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,173 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,173 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,173 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,174 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,174 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,174 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,174 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,174 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,175 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,175 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,183 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 19:55:12,191 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,191 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,191 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,192 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,192 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,192 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,192 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,192 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,193 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,193 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,193 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 915131655bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,193 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,194 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,194 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 915131655bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,194 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,194 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,194 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,194 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 639499465bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,195 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 639499465bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,195 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,203 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,203 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,203 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 3383626022bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,203 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,204 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,204 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 3383626022bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,204 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,204 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,204 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,205 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,205 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,205 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,205 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,205 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,206 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,206 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,206 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,206 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,206 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,206 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,207 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,207 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,216 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,216 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,217 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,217 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,217 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,217 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,217 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,217 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-10-26 19:55:12,268 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_aa588889-aa08-43af-b65c-fc44fca3bb74/bin-2019/utaipan/witness.graphml [2018-10-26 19:55:12,268 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 19:55:12,272 INFO L168 Benchmark]: Toolchain (without parser) took 79324.05 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 352.8 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -155.7 MB). Peak memory consumption was 197.1 MB. Max. memory is 11.5 GB. [2018-10-26 19:55:12,272 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-26 19:55:12,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.89 ms. Allocated memory is still 1.0 GB. Free memory was 943.9 MB in the beginning and 917.0 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-10-26 19:55:12,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.56 ms. Allocated memory is still 1.0 GB. Free memory is still 917.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 19:55:12,273 INFO L168 Benchmark]: Boogie Preprocessor took 115.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 917.0 MB in the beginning and 1.1 GB in the end (delta: -229.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2018-10-26 19:55:12,273 INFO L168 Benchmark]: RCFGBuilder took 597.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 11.5 GB. [2018-10-26 19:55:12,273 INFO L168 Benchmark]: TraceAbstraction took 77886.84 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 199.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -383.6 kB). Peak memory consumption was 199.4 MB. Max. memory is 11.5 GB. [2018-10-26 19:55:12,273 INFO L168 Benchmark]: Witness Printer took 110.48 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2018-10-26 19:55:12,275 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 548.89 ms. Allocated memory is still 1.0 GB. Free memory was 943.9 MB in the beginning and 917.0 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 57.56 ms. Allocated memory is still 1.0 GB. Free memory is still 917.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 115.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 917.0 MB in the beginning and 1.1 GB in the end (delta: -229.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 597.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 77886.84 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 199.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -383.6 kB). Peak memory consumption was 199.4 MB. Max. memory is 11.5 GB. * Witness Printer took 110.48 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 915131655bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 915131655bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 639499465bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 639499465bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 3383626022bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 3383626022bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 915131655bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 915131655bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 639499465bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 639499465bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 3383626022bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 3383626022bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L623] mlist *head; VAL [\old(head)=null, \old(head)=null, head={0:0}] [L644] int i; [L645] mlist *mylist, *temp; VAL [\old(head)=null, \old(head)=null, head={0:0}] [L646] CALL insert_list(mylist,2) VAL [\old(head)=null, \old(head)=null, head={0:0}] [L632] EXPR, FCALL malloc(sizeof(mlist)) [L632] l = (mlist*)malloc(sizeof(mlist)) [L633] CALL l->key = k [L633] RET l->key = k [L634] COND TRUE head==((void *)0) [L635] CALL l->next = ((void *)0) [L635] RET l->next = ((void *)0) [L640] head = l [L641] RET return 0; VAL [\old(head)=null, \old(head)=null, head={915131655:0}] [L646] insert_list(mylist,2) VAL [\old(head)=null, \old(head)=null, head={915131655:0}] [L647] CALL insert_list(mylist,5) VAL [\old(head)=null, \old(head)=null, head={915131655:0}] [L632] EXPR, FCALL malloc(sizeof(mlist)) [L632] l = (mlist*)malloc(sizeof(mlist)) [L633] CALL l->key = k [L633] RET l->key = k [L634] COND FALSE !(head==((void *)0)) [L637] CALL l->key = k [L637] RET l->key = k [L638] CALL l->next = head [L638] RET l->next = head [L640] head = l [L641] RET return 0; VAL [\old(head)=null, \old(head)=null, head={639499465:0}] [L647] insert_list(mylist,5) VAL [\old(head)=null, \old(head)=null, head={639499465:0}] [L648] CALL insert_list(mylist,1) VAL [\old(head)=null, \old(head)=null, head={639499465:0}] [L632] EXPR, FCALL malloc(sizeof(mlist)) [L632] l = (mlist*)malloc(sizeof(mlist)) [L633] CALL l->key = k [L633] RET l->key = k [L634] COND FALSE !(head==((void *)0)) [L637] CALL l->key = k [L637] RET l->key = k [L638] CALL l->next = head [L638] RET l->next = head [L640] head = l [L641] RET return 0; VAL [\old(head)=null, \old(head)=null, head={-911341274:0}] [L648] insert_list(mylist,1) VAL [\old(head)=null, \old(head)=null, head={-911341274:0}] [L649] CALL insert_list(mylist,3) VAL [\old(head)=null, \old(head)=null, head={-911341274:0}] [L632] EXPR, FCALL malloc(sizeof(mlist)) [L632] l = (mlist*)malloc(sizeof(mlist)) [L633] CALL l->key = k [L633] RET l->key = k [L634] COND FALSE !(head==((void *)0)) [L637] CALL l->key = k [L637] RET l->key = k [L638] CALL l->next = head [L638] RET l->next = head [L640] head = l [L641] RET return 0; VAL [\old(head)=null, \old(head)=null, head={639235277:0}] [L649] insert_list(mylist,3) VAL [\old(head)=null, \old(head)=null, head={639235277:0}] [L650] CALL, EXPR search_list(head,2) VAL [\old(head)=null, \old(head)=null, head={639235277:0}] [L625] l = head VAL [\old(head)=null, \old(head)=null, head={639235277:0}] [L626] l!=((void *)0) && l->key!=k [L626] CALL, EXPR l->key [L626] RET, EXPR l->key [L626] l!=((void *)0) && l->key!=k VAL [\old(head)=null, \old(head)=null, head={639235277:0}] [L626] COND TRUE l!=((void *)0) && l->key!=k [L627] CALL, EXPR l->next [L627] RET, EXPR l->next [L627] l = l->next [L626] l!=((void *)0) && l->key!=k [L626] CALL, EXPR l->key [L626] RET, EXPR l->key [L626] l!=((void *)0) && l->key!=k VAL [\old(head)=null, \old(head)=null, head={639235277:0}] [L626] COND TRUE l!=((void *)0) && l->key!=k [L627] CALL, EXPR l->next [L627] RET, EXPR l->next [L627] l = l->next [L626] l!=((void *)0) && l->key!=k [L626] CALL, EXPR l->key [L626] RET, EXPR l->key [L626] l!=((void *)0) && l->key!=k VAL [\old(head)=null, \old(head)=null, head={639235277:0}] [L626] COND TRUE l!=((void *)0) && l->key!=k [L627] CALL, EXPR l->next [L627] RET, EXPR l->next [L627] l = l->next [L626] l!=((void *)0) && l->key!=k [L626] CALL, EXPR l->key [L626] RET, EXPR l->key [L626] l!=((void *)0) && l->key!=k VAL [\old(head)=null, \old(head)=null, head={639235277:0}] [L626] COND FALSE !(l!=((void *)0) && l->key!=k) [L629] RET return l; VAL [\old(head)=null, \old(head)=null, head={639235277:0}] [L650] EXPR search_list(head,2) VAL [\old(head)=null, \old(head)=null, head={639235277:0}] [L650] temp = search_list(head,2) [L651] CALL, EXPR temp->key [L651] RET, EXPR temp->key [L651] CALL __VERIFIER_assert(temp->key==1) VAL [\old(cond)=0, \old(head)=null, \old(head)=null, head={639235277:0}] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(head)=null, \old(head)=null, cond=0, head={639235277:0}] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(head)=null, \old(head)=null, cond=0, head={639235277:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 1 error locations. UNSAFE Result, 77.8s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 19.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 258 SDtfs, 478 SDslu, 816 SDs, 0 SdLazy, 2601 SolverSat, 267 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1080 GetRequests, 863 SyntacticMatches, 11 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1597 ImplicationChecksByTransitivity, 46.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 50 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 53.9s InterpolantComputationTime, 729 NumberOfCodeBlocks, 729 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 852 ConstructedInterpolants, 24 QuantifiedInterpolants, 583735 SizeOfPredicates, 418 NumberOfNonLiveVariables, 4439 ConjunctsInSsa, 540 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 394/582 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...