./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/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 c0c6f9396ac757d71a8b83c6063958dd7f87da5d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/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 c0c6f9396ac757d71a8b83c6063958dd7f87da5d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 04:09:54,814 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 04:09:54,816 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 04:09:54,824 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 04:09:54,825 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 04:09:54,825 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 04:09:54,826 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 04:09:54,827 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 04:09:54,828 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 04:09:54,829 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 04:09:54,829 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 04:09:54,830 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 04:09:54,830 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 04:09:54,831 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 04:09:54,831 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 04:09:54,832 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 04:09:54,833 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 04:09:54,834 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 04:09:54,835 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 04:09:54,836 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 04:09:54,837 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 04:09:54,838 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 04:09:54,840 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 04:09:54,840 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 04:09:54,840 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 04:09:54,841 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 04:09:54,841 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 04:09:54,842 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 04:09:54,842 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 04:09:54,843 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 04:09:54,843 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 04:09:54,844 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 04:09:54,844 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 04:09:54,844 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 04:09:54,845 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 04:09:54,845 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 04:09:54,845 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 04:09:54,855 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 04:09:54,856 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 04:09:54,856 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 04:09:54,856 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 04:09:54,857 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 04:09:54,857 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 04:09:54,857 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 04:09:54,857 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 04:09:54,857 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 04:09:54,857 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 04:09:54,857 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 04:09:54,858 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 04:09:54,858 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 04:09:54,858 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 04:09:54,859 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 04:09:54,859 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 04:09:54,859 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 04:09:54,859 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 04:09:54,859 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 04:09:54,859 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 04:09:54,859 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 04:09:54,860 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 04:09:54,860 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 04:09:54,860 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 04:09:54,860 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 04:09:54,860 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 04:09:54,860 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 04:09:54,860 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 04:09:54,860 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 04:09:54,860 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 04:09:54,861 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 04:09:54,861 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 04:09:54,861 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 04:09:54,861 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 04:09:54,861 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 04:09:54,861 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 04:09:54,861 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_eafa9eb5-abae-47eb-9397-825ea7205d44/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 -> c0c6f9396ac757d71a8b83c6063958dd7f87da5d [2018-12-03 04:09:54,882 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 04:09:54,890 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 04:09:54,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 04:09:54,894 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 04:09:54,894 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 04:09:54,895 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded_true-unreach-call.i [2018-12-03 04:09:54,938 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/data/513faed52/52d3138a92a14f31933d09e11b14fa06/FLAG6397d914d [2018-12-03 04:09:55,351 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 04:09:55,351 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/sv-benchmarks/c/ldv-sets/test_mutex_unbounded_true-unreach-call.i [2018-12-03 04:09:55,358 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/data/513faed52/52d3138a92a14f31933d09e11b14fa06/FLAG6397d914d [2018-12-03 04:09:55,366 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/data/513faed52/52d3138a92a14f31933d09e11b14fa06 [2018-12-03 04:09:55,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 04:09:55,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 04:09:55,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 04:09:55,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 04:09:55,371 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 04:09:55,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:09:55" (1/1) ... [2018-12-03 04:09:55,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ad1106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:09:55, skipping insertion in model container [2018-12-03 04:09:55,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:09:55" (1/1) ... [2018-12-03 04:09:55,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 04:09:55,397 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 04:09:55,598 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 04:09:55,604 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 04:09:55,637 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 04:09:55,669 INFO L195 MainTranslator]: Completed translation [2018-12-03 04:09:55,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:09:55 WrapperNode [2018-12-03 04:09:55,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 04:09:55,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 04:09:55,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 04:09:55,671 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 04:09:55,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:09:55" (1/1) ... [2018-12-03 04:09:55,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:09:55" (1/1) ... [2018-12-03 04:09:55,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 04:09:55,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 04:09:55,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 04:09:55,698 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 04:09:55,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:09:55" (1/1) ... [2018-12-03 04:09:55,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:09:55" (1/1) ... [2018-12-03 04:09:55,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:09:55" (1/1) ... [2018-12-03 04:09:55,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:09:55" (1/1) ... [2018-12-03 04:09:55,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:09:55" (1/1) ... [2018-12-03 04:09:55,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:09:55" (1/1) ... [2018-12-03 04:09:55,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:09:55" (1/1) ... [2018-12-03 04:09:55,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 04:09:55,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 04:09:55,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 04:09:55,723 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 04:09:55,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:09:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/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 [2018-12-03 04:09:55,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 04:09:55,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-12-03 04:09:55,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2018-12-03 04:09:55,756 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2018-12-03 04:09:55,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2018-12-03 04:09:55,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2018-12-03 04:09:55,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2018-12-03 04:09:55,756 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2018-12-03 04:09:55,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2018-12-03 04:09:55,756 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2018-12-03 04:09:55,756 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2018-12-03 04:09:55,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2018-12-03 04:09:55,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2018-12-03 04:09:55,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 04:09:55,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 04:09:55,757 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2018-12-03 04:09:55,757 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2018-12-03 04:09:55,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 04:09:55,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 04:09:55,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-03 04:09:55,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2018-12-03 04:09:55,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2018-12-03 04:09:55,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2018-12-03 04:09:55,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2018-12-03 04:09:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-03 04:09:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2018-12-03 04:09:55,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2018-12-03 04:09:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 04:09:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-03 04:09:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-12-03 04:09:55,758 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-12-03 04:09:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2018-12-03 04:09:55,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2018-12-03 04:09:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2018-12-03 04:09:55,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2018-12-03 04:09:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-12-03 04:09:55,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2018-12-03 04:09:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2018-12-03 04:09:55,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2018-12-03 04:09:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 04:09:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 04:09:56,044 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 04:09:56,044 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-03 04:09:56,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:09:56 BoogieIcfgContainer [2018-12-03 04:09:56,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 04:09:56,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 04:09:56,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 04:09:56,048 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 04:09:56,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 04:09:55" (1/3) ... [2018-12-03 04:09:56,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b32b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:09:56, skipping insertion in model container [2018-12-03 04:09:56,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:09:55" (2/3) ... [2018-12-03 04:09:56,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b32b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:09:56, skipping insertion in model container [2018-12-03 04:09:56,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:09:56" (3/3) ... [2018-12-03 04:09:56,051 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded_true-unreach-call.i [2018-12-03 04:09:56,058 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 04:09:56,063 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-03 04:09:56,072 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-03 04:09:56,091 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 04:09:56,091 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 04:09:56,091 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 04:09:56,091 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 04:09:56,091 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 04:09:56,091 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 04:09:56,091 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 04:09:56,091 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 04:09:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2018-12-03 04:09:56,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-03 04:09:56,106 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:09:56,106 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:09:56,107 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 04:09:56,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:09:56,111 INFO L82 PathProgramCache]: Analyzing trace with hash 659425201, now seen corresponding path program 1 times [2018-12-03 04:09:56,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 04:09:56,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:09:56,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:09:56,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:09:56,144 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 04:09:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:09:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:09:56,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:09:56,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 04:09:56,198 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 04:09:56,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 04:09:56,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 04:09:56,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 04:09:56,210 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 2 states. [2018-12-03 04:09:56,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:09:56,229 INFO L93 Difference]: Finished difference Result 199 states and 241 transitions. [2018-12-03 04:09:56,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 04:09:56,230 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-12-03 04:09:56,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:09:56,235 INFO L225 Difference]: With dead ends: 199 [2018-12-03 04:09:56,235 INFO L226 Difference]: Without dead ends: 98 [2018-12-03 04:09:56,237 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 04:09:56,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-12-03 04:09:56,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-12-03 04:09:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-12-03 04:09:56,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2018-12-03 04:09:56,264 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 24 [2018-12-03 04:09:56,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:09:56,264 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2018-12-03 04:09:56,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 04:09:56,265 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2018-12-03 04:09:56,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-03 04:09:56,266 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:09:56,266 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:09:56,266 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 04:09:56,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:09:56,266 INFO L82 PathProgramCache]: Analyzing trace with hash 629383312, now seen corresponding path program 1 times [2018-12-03 04:09:56,266 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 04:09:56,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:09:56,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:09:56,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:09:56,268 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 04:09:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:09:56,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:09:56,319 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:09:56,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 04:09:56,320 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 04:09:56,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 04:09:56,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 04:09:56,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 04:09:56,322 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 4 states. [2018-12-03 04:09:56,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:09:56,340 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2018-12-03 04:09:56,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 04:09:56,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-12-03 04:09:56,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:09:56,342 INFO L225 Difference]: With dead ends: 104 [2018-12-03 04:09:56,342 INFO L226 Difference]: Without dead ends: 102 [2018-12-03 04:09:56,343 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 04:09:56,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-12-03 04:09:56,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-12-03 04:09:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-12-03 04:09:56,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2018-12-03 04:09:56,352 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 24 [2018-12-03 04:09:56,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:09:56,352 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2018-12-03 04:09:56,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 04:09:56,352 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2018-12-03 04:09:56,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-03 04:09:56,353 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:09:56,353 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:09:56,353 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 04:09:56,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:09:56,353 INFO L82 PathProgramCache]: Analyzing trace with hash -2090980679, now seen corresponding path program 1 times [2018-12-03 04:09:56,353 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 04:09:56,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:09:56,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:09:56,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:09:56,354 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 04:09:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:09:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:09:56,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:09:56,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 04:09:56,428 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 04:09:56,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 04:09:56,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 04:09:56,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 04:09:56,429 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand 4 states. [2018-12-03 04:09:56,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:09:56,535 INFO L93 Difference]: Finished difference Result 216 states and 243 transitions. [2018-12-03 04:09:56,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 04:09:56,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-12-03 04:09:56,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:09:56,537 INFO L225 Difference]: With dead ends: 216 [2018-12-03 04:09:56,537 INFO L226 Difference]: Without dead ends: 130 [2018-12-03 04:09:56,537 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:09:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-12-03 04:09:56,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 111. [2018-12-03 04:09:56,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-12-03 04:09:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2018-12-03 04:09:56,544 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 24 [2018-12-03 04:09:56,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:09:56,545 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2018-12-03 04:09:56,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 04:09:56,545 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2018-12-03 04:09:56,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-03 04:09:56,545 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:09:56,545 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-03 04:09:56,546 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 04:09:56,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:09:56,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1991624851, now seen corresponding path program 1 times [2018-12-03 04:09:56,546 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 04:09:56,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:09:56,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:09:56,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:09:56,547 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 04:09:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:09:56,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:09:56,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:09:56,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-03 04:09:56,655 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 04:09:56,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 04:09:56,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 04:09:56,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-03 04:09:56,656 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand 8 states. [2018-12-03 04:09:56,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:09:56,859 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2018-12-03 04:09:56,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-03 04:09:56,860 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2018-12-03 04:09:56,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:09:56,861 INFO L225 Difference]: With dead ends: 130 [2018-12-03 04:09:56,861 INFO L226 Difference]: Without dead ends: 112 [2018-12-03 04:09:56,861 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-12-03 04:09:56,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-12-03 04:09:56,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2018-12-03 04:09:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-12-03 04:09:56,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2018-12-03 04:09:56,867 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 28 [2018-12-03 04:09:56,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:09:56,868 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2018-12-03 04:09:56,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 04:09:56,868 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2018-12-03 04:09:56,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-03 04:09:56,868 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:09:56,869 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:09:56,869 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 04:09:56,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:09:56,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1163996909, now seen corresponding path program 1 times [2018-12-03 04:09:56,869 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 04:09:56,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:09:56,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:09:56,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:09:56,870 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 04:09:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:09:58,301 WARN L180 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 98 [2018-12-03 04:09:59,511 WARN L180 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 111 DAG size of output: 98 [2018-12-03 04:09:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:09:59,858 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 04:09:59,858 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 04:09:59,858 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 41 with the following transitions: [2018-12-03 04:09:59,860 INFO L205 CegarAbsIntRunner]: [0], [2], [3], [7], [13], [15], [17], [20], [24], [32], [65], [66], [67], [68], [86], [87], [121], [123], [126], [127], [150], [151], [159], [162], [170], [171], [172], [173], [174], [175], [176], [177], [178], [179], [185], [199], [200], [209], [210], [211] [2018-12-03 04:09:59,884 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 04:09:59,884 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 04:10:00,070 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 04:10:00,071 INFO L272 AbstractInterpreter]: Visited 40 different actions 100 times. Merged at 8 different actions 16 times. Never widened. Performed 990 root evaluator evaluations with a maximum evaluation depth of 9. Performed 990 inverse root evaluator evaluations with a maximum inverse evaluation depth of 9. Found 1 fixpoints after 1 different actions. Largest state had 37 variables. [2018-12-03 04:10:00,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:10:00,081 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 04:10:00,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 04:10:00,081 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/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 [2018-12-03 04:10:00,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:10:00,090 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 04:10:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:10:00,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 04:10:00,152 INFO L478 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 24 treesize of output 23 [2018-12-03 04:10:00,164 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,171 INFO L478 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 36 [2018-12-03 04:10:00,174 INFO L478 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 30 treesize of output 22 [2018-12-03 04:10:00,175 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:00,199 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,208 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,212 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2018-12-03 04:10:00,213 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-12-03 04:10:00,235 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-03 04:10:00,252 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-03 04:10:00,272 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-03 04:10:00,272 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:51, output treesize:138 [2018-12-03 04:10:00,339 INFO L478 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 48 treesize of output 38 [2018-12-03 04:10:00,340 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:00,375 INFO L478 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 48 treesize of output 38 [2018-12-03 04:10:00,376 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:00,410 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,411 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,411 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,412 INFO L478 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 50 treesize of output 43 [2018-12-03 04:10:00,413 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:00,430 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:10:00,431 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:147, output treesize:35 [2018-12-03 04:10:00,500 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,501 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,502 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,503 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,504 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,504 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2018-12-03 04:10:00,505 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:00,548 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,549 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,549 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,550 INFO L478 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 50 treesize of output 47 [2018-12-03 04:10:00,550 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:00,586 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,586 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,587 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,587 INFO L478 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 47 treesize of output 40 [2018-12-03 04:10:00,588 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:00,603 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:10:00,604 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:153, output treesize:40 [2018-12-03 04:10:00,690 INFO L478 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 7 treesize of output 5 [2018-12-03 04:10:00,692 INFO L478 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 5 treesize of output 1 [2018-12-03 04:10:00,692 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:00,694 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:10:00,704 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:00,705 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2018-12-03 04:10:00,710 INFO L478 Elim1Store]: Elim1 applied some 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 10 treesize of output 15 [2018-12-03 04:10:00,711 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:00,715 INFO L478 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 5 treesize of output 1 [2018-12-03 04:10:00,716 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:00,717 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:10:00,722 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:10:00,723 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:38, output treesize:17 [2018-12-03 04:10:16,893 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 47 [2018-12-03 04:10:37,016 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 49 [2018-12-03 04:10:37,041 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 67 [2018-12-03 04:10:37,064 INFO L478 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 14 treesize of output 13 [2018-12-03 04:10:37,064 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:37,118 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 76 [2018-12-03 04:10:37,122 INFO L478 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 13 treesize of output 26 [2018-12-03 04:10:37,126 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:37,129 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 26 treesize of output 43 [2018-12-03 04:10:37,130 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:37,140 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:10:37,181 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 74 [2018-12-03 04:10:37,188 INFO L478 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 0 case distinctions, treesize of input 31 treesize of output 38 [2018-12-03 04:10:37,188 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:37,209 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:10:37,223 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:10:37,236 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:10:37,282 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:37,284 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:37,288 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 113 [2018-12-03 04:10:37,377 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 89 treesize of output 110 [2018-12-03 04:10:37,380 INFO L267 ElimStorePlain]: Start of recursive call 10: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2018-12-03 04:10:37,380 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-03 04:10:37,381 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:37,435 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:37,442 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 88 [2018-12-03 04:10:37,445 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 22 [2018-12-03 04:10:37,447 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:37,448 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-12-03 04:10:37,448 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:37,452 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:10:37,469 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:37,471 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:37,473 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 72 [2018-12-03 04:10:37,486 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 66 [2018-12-03 04:10:37,487 INFO L267 ElimStorePlain]: Start of recursive call 16: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 4 xjuncts. [2018-12-03 04:10:37,505 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:10:37,513 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:10:37,516 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:37,523 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 90 [2018-12-03 04:10:37,525 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 22 [2018-12-03 04:10:37,528 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:37,529 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-12-03 04:10:37,529 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-03 04:10:37,534 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:10:37,552 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:37,554 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:10:37,557 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 77 [2018-12-03 04:10:37,579 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 97 [2018-12-03 04:10:37,583 INFO L267 ElimStorePlain]: Start of recursive call 21: 8 dim-0 vars, End of recursive call: 8 dim-0 vars, and 14 xjuncts. [2018-12-03 04:10:37,665 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 6 xjuncts. [2018-12-03 04:10:37,732 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 6 xjuncts. [2018-12-03 04:10:37,820 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 7 xjuncts. [2018-12-03 04:10:37,938 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 16 dim-0 vars, and 7 xjuncts. [2018-12-03 04:10:37,938 INFO L202 ElimStorePlain]: Needed 21 recursive calls to eliminate 7 variables, input treesize:263, output treesize:1286 [2018-12-03 04:10:38,269 WARN L180 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 112 [2018-12-03 04:10:38,647 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-12-03 04:10:38,935 WARN L180 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-12-03 04:10:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:10:39,211 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 04:10:46,852 WARN L180 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 66 [2018-12-03 04:10:57,069 WARN L180 SmtUtils]: Spent 4.46 s on a formula simplification that was a NOOP. DAG size: 101 [2018-12-03 04:10:57,074 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-12-03 04:10:57,087 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 37 [2018-12-03 04:11:00,230 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 04:11:00,231 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 35510 column 139: unknown constant v_prenex_67 at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:221) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:114) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.assertTerm(ManagedScript.java:136) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:120) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.checkEqualityStatus(Elim1Store.java:668) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.analyzeIndexEqualities(Elim1Store.java:775) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:300) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$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:214) 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:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) 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:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) 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) [2018-12-03 04:11:00,235 INFO L168 Benchmark]: Toolchain (without parser) took 64866.97 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 276.3 MB). Free memory was 953.5 MB in the beginning and 1.2 GB in the end (delta: -269.6 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-03 04:11:00,236 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-12-03 04:11:00,236 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 953.5 MB in the beginning and 1.1 GB in the end (delta: -122.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2018-12-03 04:11:00,237 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.49 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 04:11:00,237 INFO L168 Benchmark]: Boogie Preprocessor took 24.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-12-03 04:11:00,238 INFO L168 Benchmark]: RCFGBuilder took 321.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 11.5 GB. [2018-12-03 04:11:00,238 INFO L168 Benchmark]: TraceAbstraction took 64188.65 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 177.2 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -190.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 04:11:00,240 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 301.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 953.5 MB in the beginning and 1.1 GB in the end (delta: -122.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.49 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 321.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 64188.65 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 177.2 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -190.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 35510 column 139: unknown constant v_prenex_67 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 35510 column 139: unknown constant v_prenex_67: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-03 04:11:01,484 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 04:11:01,485 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 04:11:01,490 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 04:11:01,491 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 04:11:01,491 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 04:11:01,492 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 04:11:01,493 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 04:11:01,493 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 04:11:01,494 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 04:11:01,494 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 04:11:01,494 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 04:11:01,495 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 04:11:01,495 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 04:11:01,496 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 04:11:01,496 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 04:11:01,496 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 04:11:01,497 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 04:11:01,498 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 04:11:01,499 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 04:11:01,499 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 04:11:01,500 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 04:11:01,501 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 04:11:01,501 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 04:11:01,501 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 04:11:01,502 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 04:11:01,502 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 04:11:01,502 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 04:11:01,503 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 04:11:01,503 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 04:11:01,503 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 04:11:01,504 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 04:11:01,504 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 04:11:01,504 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 04:11:01,504 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 04:11:01,505 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 04:11:01,505 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-03 04:11:01,512 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 04:11:01,512 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 04:11:01,513 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 04:11:01,513 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 04:11:01,513 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 04:11:01,513 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 04:11:01,513 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 04:11:01,513 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 04:11:01,513 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 04:11:01,513 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 04:11:01,514 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 04:11:01,514 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 04:11:01,514 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 04:11:01,514 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 04:11:01,514 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 04:11:01,514 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 04:11:01,514 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 04:11:01,514 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-03 04:11:01,515 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-03 04:11:01,515 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 04:11:01,515 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 04:11:01,515 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-03 04:11:01,515 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 04:11:01,515 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 04:11:01,515 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 04:11:01,515 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 04:11:01,515 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 04:11:01,515 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 04:11:01,515 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 04:11:01,516 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 04:11:01,516 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 04:11:01,516 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-03 04:11:01,516 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 04:11:01,516 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-03 04:11:01,516 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-03 04:11:01,516 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_eafa9eb5-abae-47eb-9397-825ea7205d44/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 -> c0c6f9396ac757d71a8b83c6063958dd7f87da5d [2018-12-03 04:11:01,534 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 04:11:01,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 04:11:01,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 04:11:01,545 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 04:11:01,545 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 04:11:01,545 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded_true-unreach-call.i [2018-12-03 04:11:01,585 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/data/cf0f33cc4/ae7b4f1f628f4bf39d4825e420ed1b03/FLAG271433c12 [2018-12-03 04:11:02,050 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 04:11:02,050 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/sv-benchmarks/c/ldv-sets/test_mutex_unbounded_true-unreach-call.i [2018-12-03 04:11:02,058 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/data/cf0f33cc4/ae7b4f1f628f4bf39d4825e420ed1b03/FLAG271433c12 [2018-12-03 04:11:02,066 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/data/cf0f33cc4/ae7b4f1f628f4bf39d4825e420ed1b03 [2018-12-03 04:11:02,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 04:11:02,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 04:11:02,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 04:11:02,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 04:11:02,071 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 04:11:02,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:11:02" (1/1) ... [2018-12-03 04:11:02,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c3c908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:02, skipping insertion in model container [2018-12-03 04:11:02,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:11:02" (1/1) ... [2018-12-03 04:11:02,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 04:11:02,099 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 04:11:02,284 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 04:11:02,292 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 04:11:02,382 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 04:11:02,412 INFO L195 MainTranslator]: Completed translation [2018-12-03 04:11:02,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:02 WrapperNode [2018-12-03 04:11:02,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 04:11:02,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 04:11:02,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 04:11:02,413 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 04:11:02,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:02" (1/1) ... [2018-12-03 04:11:02,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:02" (1/1) ... [2018-12-03 04:11:02,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 04:11:02,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 04:11:02,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 04:11:02,436 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 04:11:02,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:02" (1/1) ... [2018-12-03 04:11:02,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:02" (1/1) ... [2018-12-03 04:11:02,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:02" (1/1) ... [2018-12-03 04:11:02,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:02" (1/1) ... [2018-12-03 04:11:02,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:02" (1/1) ... [2018-12-03 04:11:02,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:02" (1/1) ... [2018-12-03 04:11:02,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:02" (1/1) ... [2018-12-03 04:11:02,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 04:11:02,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 04:11:02,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 04:11:02,461 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 04:11:02,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/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 [2018-12-03 04:11:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 04:11:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-12-03 04:11:02,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2018-12-03 04:11:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2018-12-03 04:11:02,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2018-12-03 04:11:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2018-12-03 04:11:02,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2018-12-03 04:11:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2018-12-03 04:11:02,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2018-12-03 04:11:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2018-12-03 04:11:02,493 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2018-12-03 04:11:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2018-12-03 04:11:02,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2018-12-03 04:11:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 04:11:02,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 04:11:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2018-12-03 04:11:02,494 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2018-12-03 04:11:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 04:11:02,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 04:11:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-03 04:11:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2018-12-03 04:11:02,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2018-12-03 04:11:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2018-12-03 04:11:02,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2018-12-03 04:11:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-03 04:11:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2018-12-03 04:11:02,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2018-12-03 04:11:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 04:11:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-03 04:11:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-12-03 04:11:02,495 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-12-03 04:11:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2018-12-03 04:11:02,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2018-12-03 04:11:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2018-12-03 04:11:02,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2018-12-03 04:11:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-12-03 04:11:02,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2018-12-03 04:11:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2018-12-03 04:11:02,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2018-12-03 04:11:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 04:11:02,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 04:11:02,800 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 04:11:02,800 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-03 04:11:02,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:11:02 BoogieIcfgContainer [2018-12-03 04:11:02,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 04:11:02,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 04:11:02,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 04:11:02,803 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 04:11:02,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 04:11:02" (1/3) ... [2018-12-03 04:11:02,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793c0c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:11:02, skipping insertion in model container [2018-12-03 04:11:02,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:11:02" (2/3) ... [2018-12-03 04:11:02,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793c0c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:11:02, skipping insertion in model container [2018-12-03 04:11:02,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:11:02" (3/3) ... [2018-12-03 04:11:02,805 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded_true-unreach-call.i [2018-12-03 04:11:02,810 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 04:11:02,815 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-03 04:11:02,824 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-03 04:11:02,840 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-03 04:11:02,841 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 04:11:02,841 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 04:11:02,841 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 04:11:02,841 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 04:11:02,841 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 04:11:02,841 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 04:11:02,841 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 04:11:02,842 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 04:11:02,852 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2018-12-03 04:11:02,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-03 04:11:02,856 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:02,857 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:02,858 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 04:11:02,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:02,861 INFO L82 PathProgramCache]: Analyzing trace with hash 344412138, now seen corresponding path program 1 times [2018-12-03 04:11:02,864 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 04:11:02,864 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 04:11:02,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:11:02,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 04:11:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:11:02,931 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 04:11:02,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:11:02,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 04:11:02,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 04:11:02,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 04:11:02,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 04:11:02,945 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 2 states. [2018-12-03 04:11:02,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:11:02,965 INFO L93 Difference]: Finished difference Result 191 states and 233 transitions. [2018-12-03 04:11:02,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 04:11:02,966 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-12-03 04:11:02,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:11:02,972 INFO L225 Difference]: With dead ends: 191 [2018-12-03 04:11:02,972 INFO L226 Difference]: Without dead ends: 94 [2018-12-03 04:11:02,974 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 04:11:02,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-12-03 04:11:03,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-12-03 04:11:03,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-12-03 04:11:03,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2018-12-03 04:11:03,004 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 23 [2018-12-03 04:11:03,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:11:03,004 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2018-12-03 04:11:03,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 04:11:03,004 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2018-12-03 04:11:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-03 04:11:03,005 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:03,005 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:03,006 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 04:11:03,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:03,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1596219605, now seen corresponding path program 1 times [2018-12-03 04:11:03,006 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 04:11:03,006 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 04:11:03,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:11:03,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 04:11:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:11:03,069 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 04:11:03,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:11:03,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 04:11:03,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 04:11:03,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 04:11:03,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 04:11:03,072 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 4 states. [2018-12-03 04:11:03,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:11:03,085 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2018-12-03 04:11:03,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 04:11:03,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-03 04:11:03,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:11:03,088 INFO L225 Difference]: With dead ends: 99 [2018-12-03 04:11:03,088 INFO L226 Difference]: Without dead ends: 97 [2018-12-03 04:11:03,088 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 04:11:03,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-12-03 04:11:03,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-12-03 04:11:03,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-12-03 04:11:03,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2018-12-03 04:11:03,096 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 23 [2018-12-03 04:11:03,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:11:03,097 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2018-12-03 04:11:03,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 04:11:03,097 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2018-12-03 04:11:03,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-03 04:11:03,097 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:03,097 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:03,098 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 04:11:03,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:03,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1545425950, now seen corresponding path program 1 times [2018-12-03 04:11:03,098 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 04:11:03,098 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 04:11:03,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:11:03,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 04:11:03,229 INFO L478 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 17 treesize of output 13 [2018-12-03 04:11:03,234 INFO L478 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 13 treesize of output 5 [2018-12-03 04:11:03,234 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:03,237 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:11:03,259 INFO L478 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 15 treesize of output 11 [2018-12-03 04:11:03,261 INFO L478 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 11 treesize of output 3 [2018-12-03 04:11:03,262 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:03,264 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:11:03,270 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:11:03,270 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:34, output treesize:12 [2018-12-03 04:11:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:11:03,282 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 04:11:03,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:11:03,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 04:11:03,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 04:11:03,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 04:11:03,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 04:11:03,284 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 4 states. [2018-12-03 04:11:03,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:11:03,720 INFO L93 Difference]: Finished difference Result 205 states and 232 transitions. [2018-12-03 04:11:03,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 04:11:03,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-03 04:11:03,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:11:03,722 INFO L225 Difference]: With dead ends: 205 [2018-12-03 04:11:03,722 INFO L226 Difference]: Without dead ends: 124 [2018-12-03 04:11:03,723 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 04:11:03,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-12-03 04:11:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 106. [2018-12-03 04:11:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-12-03 04:11:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2018-12-03 04:11:03,731 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 23 [2018-12-03 04:11:03,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:11:03,731 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2018-12-03 04:11:03,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 04:11:03,732 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2018-12-03 04:11:03,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-03 04:11:03,732 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:03,732 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-03 04:11:03,732 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 04:11:03,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:03,732 INFO L82 PathProgramCache]: Analyzing trace with hash 330168167, now seen corresponding path program 1 times [2018-12-03 04:11:03,733 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 04:11:03,733 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 04:11:03,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:11:03,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 04:11:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:11:03,994 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 04:11:03,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:11:03,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-03 04:11:03,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 04:11:03,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 04:11:03,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-03 04:11:03,996 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand 8 states. [2018-12-03 04:11:04,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:11:04,630 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2018-12-03 04:11:04,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 04:11:04,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-12-03 04:11:04,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:11:04,632 INFO L225 Difference]: With dead ends: 124 [2018-12-03 04:11:04,632 INFO L226 Difference]: Without dead ends: 107 [2018-12-03 04:11:04,632 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-12-03 04:11:04,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-12-03 04:11:04,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2018-12-03 04:11:04,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-12-03 04:11:04,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2018-12-03 04:11:04,639 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 27 [2018-12-03 04:11:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:11:04,639 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2018-12-03 04:11:04,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 04:11:04,639 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2018-12-03 04:11:04,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-03 04:11:04,640 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:11:04,640 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2018-12-03 04:11:04,640 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 04:11:04,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:11:04,640 INFO L82 PathProgramCache]: Analyzing trace with hash 759782182, now seen corresponding path program 1 times [2018-12-03 04:11:04,641 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 04:11:04,641 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 04:11:04,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:11:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:11:04,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 04:11:04,798 INFO L478 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 24 treesize of output 23 [2018-12-03 04:11:04,811 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:04,818 INFO L478 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 36 [2018-12-03 04:11:04,830 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 28 [2018-12-03 04:11:04,830 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-12-03 04:11:04,858 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:04,859 INFO L478 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 20 treesize of output 24 [2018-12-03 04:11:04,859 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:04,877 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-03 04:11:04,896 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-03 04:11:04,932 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-03 04:11:04,933 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:51, output treesize:139 [2018-12-03 04:11:05,032 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:05,033 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:05,034 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:05,035 INFO L478 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 54 treesize of output 43 [2018-12-03 04:11:05,036 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:05,117 INFO L478 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 52 treesize of output 38 [2018-12-03 04:11:05,117 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:05,167 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 04:11:05,168 INFO L478 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 48 treesize of output 35 [2018-12-03 04:11:05,168 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:05,196 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:11:05,196 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:158, output treesize:35 [2018-12-03 04:11:05,252 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:05,252 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:05,253 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:05,254 INFO L478 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 54 treesize of output 43 [2018-12-03 04:11:05,254 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:05,314 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:05,316 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:05,317 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:05,318 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:05,319 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:05,320 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 48 [2018-12-03 04:11:05,320 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:05,384 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:05,385 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 04:11:05,385 INFO L478 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 50 treesize of output 40 [2018-12-03 04:11:05,385 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:05,415 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:11:05,415 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:164, output treesize:40 [2018-12-03 04:11:05,475 INFO L478 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 7 treesize of output 5 [2018-12-03 04:11:05,477 INFO L478 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 5 treesize of output 1 [2018-12-03 04:11:05,478 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:05,479 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:11:05,494 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:05,495 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2018-12-03 04:11:05,506 INFO L478 Elim1Store]: Elim1 applied some 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 10 treesize of output 15 [2018-12-03 04:11:05,506 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:05,511 INFO L478 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 5 treesize of output 1 [2018-12-03 04:11:05,512 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:05,513 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:11:05,521 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:11:05,521 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:38, output treesize:17 [2018-12-03 04:11:22,109 WARN L180 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 47 [2018-12-03 04:11:42,725 WARN L180 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 49 [2018-12-03 04:11:42,771 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:42,850 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:42,851 INFO L303 Elim1Store]: Index analysis took 119 ms [2018-12-03 04:11:42,852 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 178 [2018-12-03 04:11:44,726 WARN L180 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-12-03 04:11:44,727 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-03 04:11:44,727 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:44,835 INFO L303 Elim1Store]: Index analysis took 107 ms [2018-12-03 04:11:45,278 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 156 treesize of output 165 [2018-12-03 04:11:45,282 INFO L267 ElimStorePlain]: Start of recursive call 4: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2018-12-03 04:11:46,077 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:46,172 INFO L303 Elim1Store]: Index analysis took 117 ms [2018-12-03 04:11:46,173 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 145 [2018-12-03 04:11:46,183 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 16 [2018-12-03 04:11:46,195 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:46,195 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-12-03 04:11:46,196 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:46,240 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:11:46,443 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:46,486 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:46,487 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 71 [2018-12-03 04:11:46,625 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 79 [2018-12-03 04:11:46,630 INFO L267 ElimStorePlain]: Start of recursive call 9: 8 dim-0 vars, End of recursive call: 8 dim-0 vars, and 14 xjuncts. [2018-12-03 04:11:49,639 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 6 xjuncts. [2018-12-03 04:11:52,535 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 6 xjuncts. [2018-12-03 04:11:52,622 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:52,809 INFO L303 Elim1Store]: Index analysis took 272 ms [2018-12-03 04:11:52,809 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 143 [2018-12-03 04:11:52,835 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 16 [2018-12-03 04:11:52,881 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:52,882 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-12-03 04:11:52,882 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-12-03 04:11:53,029 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:11:53,466 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:53,656 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:11:53,657 INFO L303 Elim1Store]: Index analysis took 265 ms [2018-12-03 04:11:53,657 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 66 [2018-12-03 04:11:53,734 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 54 [2018-12-03 04:11:53,735 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 4 xjuncts. [2018-12-03 04:11:54,000 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:11:54,148 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:11:57,087 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 7 xjuncts. [2018-12-03 04:12:00,157 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 124 [2018-12-03 04:12:00,842 WARN L180 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-12-03 04:12:00,849 INFO L478 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 14 treesize of output 13 [2018-12-03 04:12:00,850 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:01,045 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-03 04:12:01,052 INFO L478 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 19 treesize of output 22 [2018-12-03 04:12:01,061 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:01,067 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 35 [2018-12-03 04:12:01,068 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:01,088 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:01,187 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-03 04:12:01,202 INFO L478 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 0 case distinctions, treesize of input 20 treesize of output 37 [2018-12-03 04:12:01,203 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:01,245 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:01,276 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:01,336 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:01,371 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 124 [2018-12-03 04:12:02,184 WARN L180 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-12-03 04:12:02,193 INFO L478 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 14 treesize of output 13 [2018-12-03 04:12:02,193 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:02,398 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-03 04:12:02,405 INFO L478 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 19 treesize of output 22 [2018-12-03 04:12:02,415 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:02,421 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 35 [2018-12-03 04:12:02,421 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:02,442 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:02,522 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-03 04:12:02,533 INFO L478 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 0 case distinctions, treesize of input 20 treesize of output 37 [2018-12-03 04:12:02,533 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:02,569 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:02,596 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:02,660 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:02,696 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 105 [2018-12-03 04:12:02,976 WARN L180 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-12-03 04:12:02,983 INFO L478 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 14 treesize of output 13 [2018-12-03 04:12:02,983 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:03,147 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-03 04:12:03,153 INFO L478 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 19 treesize of output 22 [2018-12-03 04:12:03,161 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:03,166 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 35 [2018-12-03 04:12:03,166 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:03,183 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:03,244 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-03 04:12:03,253 INFO L478 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 0 case distinctions, treesize of input 20 treesize of output 37 [2018-12-03 04:12:03,253 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:03,283 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:03,305 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:03,351 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:03,386 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 131 [2018-12-03 04:12:04,235 WARN L180 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-12-03 04:12:04,246 INFO L478 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 14 treesize of output 13 [2018-12-03 04:12:04,246 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:04,501 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-03 04:12:04,510 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-03 04:12:04,519 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:04,525 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 35 [2018-12-03 04:12:04,525 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:04,547 INFO L267 ElimStorePlain]: Start of recursive call 39: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:04,639 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-03 04:12:04,654 INFO L478 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 0 case distinctions, treesize of input 20 treesize of output 37 [2018-12-03 04:12:04,654 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:04,691 INFO L267 ElimStorePlain]: Start of recursive call 41: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:04,724 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:04,812 INFO L267 ElimStorePlain]: Start of recursive call 36: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:04,906 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 107 [2018-12-03 04:12:05,101 WARN L180 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-12-03 04:12:05,106 INFO L478 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 14 treesize of output 13 [2018-12-03 04:12:05,107 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:05,281 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-03 04:12:05,287 INFO L478 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 19 treesize of output 22 [2018-12-03 04:12:05,293 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:05,298 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 35 [2018-12-03 04:12:05,299 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:05,313 INFO L267 ElimStorePlain]: Start of recursive call 46: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:05,373 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-03 04:12:05,382 INFO L478 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 0 case distinctions, treesize of input 20 treesize of output 37 [2018-12-03 04:12:05,382 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:05,410 INFO L267 ElimStorePlain]: Start of recursive call 48: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:05,430 INFO L267 ElimStorePlain]: Start of recursive call 45: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:05,472 INFO L267 ElimStorePlain]: Start of recursive call 43: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:05,525 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 117 [2018-12-03 04:12:06,150 WARN L180 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-12-03 04:12:06,159 INFO L478 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 14 treesize of output 13 [2018-12-03 04:12:06,159 INFO L267 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:06,332 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-03 04:12:06,338 INFO L478 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 19 treesize of output 22 [2018-12-03 04:12:06,345 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:06,350 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 35 [2018-12-03 04:12:06,350 INFO L267 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:06,370 INFO L267 ElimStorePlain]: Start of recursive call 53: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:06,455 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-03 04:12:06,465 INFO L478 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 0 case distinctions, treesize of input 20 treesize of output 37 [2018-12-03 04:12:06,465 INFO L267 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:06,497 INFO L267 ElimStorePlain]: Start of recursive call 55: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:06,527 INFO L267 ElimStorePlain]: Start of recursive call 52: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:06,589 INFO L267 ElimStorePlain]: Start of recursive call 50: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:06,642 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 115 [2018-12-03 04:12:06,901 WARN L180 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-12-03 04:12:06,910 INFO L478 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 14 treesize of output 13 [2018-12-03 04:12:06,911 INFO L267 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:07,110 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-03 04:12:07,119 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-03 04:12:07,128 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:07,134 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-12-03 04:12:07,134 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:07,154 INFO L267 ElimStorePlain]: Start of recursive call 60: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:07,238 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-03 04:12:07,246 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 20 treesize of output 43 [2018-12-03 04:12:07,247 INFO L267 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:07,276 INFO L267 ElimStorePlain]: Start of recursive call 62: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:07,301 INFO L267 ElimStorePlain]: Start of recursive call 59: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:07,357 INFO L267 ElimStorePlain]: Start of recursive call 57: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:09,973 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 23 dim-0 vars, and 7 xjuncts. [2018-12-03 04:12:09,974 INFO L202 ElimStorePlain]: Needed 63 recursive calls to eliminate 7 variables, input treesize:263, output treesize:1271 [2018-12-03 04:12:10,740 WARN L180 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 118 [2018-12-03 04:12:15,154 WARN L180 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-12-03 04:12:19,580 WARN L180 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-12-03 04:12:22,380 WARN L180 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-12-03 04:12:31,175 WARN L180 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-12-03 04:12:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:12:31,205 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 04:12:32,266 WARN L180 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-12-03 04:12:32,701 WARN L180 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-12-03 04:12:33,443 WARN L180 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-12-03 04:12:34,256 WARN L180 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2018-12-03 04:12:35,410 WARN L180 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 62 [2018-12-03 04:12:35,874 WARN L180 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-12-03 04:12:37,004 WARN L180 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 58 [2018-12-03 04:12:37,979 WARN L180 SmtUtils]: Spent 974.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-12-03 04:12:44,621 WARN L180 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 49 [2018-12-03 04:12:44,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 04:12:44,624 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eafa9eb5-abae-47eb-9397-825ea7205d44/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 04:12:44,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:12:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:12:44,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 04:12:44,670 INFO L478 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 24 treesize of output 23 [2018-12-03 04:12:44,683 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:44,689 INFO L478 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 36 [2018-12-03 04:12:44,693 INFO L478 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 30 treesize of output 18 [2018-12-03 04:12:44,693 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:44,717 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:44,719 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:44,725 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2018-12-03 04:12:44,725 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-12-03 04:12:44,753 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-03 04:12:44,777 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-03 04:12:44,817 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-03 04:12:44,817 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:48, output treesize:131 [2018-12-03 04:12:45,393 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 04:12:45,394 INFO L478 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 48 treesize of output 35 [2018-12-03 04:12:45,394 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:45,454 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:45,455 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 04:12:45,455 INFO L478 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 50 treesize of output 40 [2018-12-03 04:12:45,455 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:45,516 INFO L478 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 46 treesize of output 32 [2018-12-03 04:12:45,516 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:45,554 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:45,554 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:148, output treesize:32 [2018-12-03 04:12:45,866 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:45,867 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:45,869 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 04:12:45,869 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2018-12-03 04:12:45,869 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:45,947 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:45,948 INFO L683 Elim1Store]: detected equality via solver [2018-12-03 04:12:45,948 INFO L478 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 50 treesize of output 40 [2018-12-03 04:12:45,949 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:46,027 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:46,029 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:46,030 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:12:46,031 INFO L478 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 48 treesize of output 37 [2018-12-03 04:12:46,031 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:46,074 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:46,074 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:154, output treesize:37 [2018-12-03 04:12:46,465 INFO L478 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 7 treesize of output 5 [2018-12-03 04:12:46,467 INFO L478 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 5 treesize of output 1 [2018-12-03 04:12:46,467 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:46,468 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:46,485 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2018-12-03 04:12:46,487 INFO L478 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 5 treesize of output 1 [2018-12-03 04:12:46,488 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:46,493 INFO L478 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 5 treesize of output 1 [2018-12-03 04:12:46,493 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-03 04:12:46,494 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:46,501 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:12:46,501 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:35, output treesize:14 [2018-12-03 04:13:19,812 WARN L180 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 45 [2018-12-03 04:13:57,062 WARN L180 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 47 [2018-12-03 04:13:57,351 INFO L303 Elim1Store]: Index analysis took 284 ms [2018-12-03 04:13:57,351 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 161 [2018-12-03 04:13:58,120 WARN L180 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-12-03 04:13:58,239 INFO L303 Elim1Store]: Index analysis took 118 ms [2018-12-03 04:13:58,550 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 128 [2018-12-03 04:13:58,551 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-12-03 04:13:58,551 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-03 04:13:58,551 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-03 04:13:59,480 INFO L303 Elim1Store]: Index analysis took 270 ms [2018-12-03 04:13:59,480 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 135 [2018-12-03 04:13:59,499 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 16 [2018-12-03 04:13:59,544 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:13:59,545 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-12-03 04:13:59,545 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-03 04:13:59,647 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:00,103 INFO L303 Elim1Store]: Index analysis took 245 ms [2018-12-03 04:14:00,103 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 51 [2018-12-03 04:14:00,140 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2018-12-03 04:14:00,141 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-03 04:14:00,239 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:00,363 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:00,718 INFO L303 Elim1Store]: Index analysis took 354 ms [2018-12-03 04:14:00,718 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 137 [2018-12-03 04:14:00,732 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 16 [2018-12-03 04:14:00,753 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:14:00,754 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-12-03 04:14:00,754 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-12-03 04:14:00,858 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:01,298 INFO L303 Elim1Store]: Index analysis took 250 ms [2018-12-03 04:14:01,298 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2018-12-03 04:14:01,354 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2018-12-03 04:14:01,354 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-12-03 04:14:01,883 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-03 04:14:02,198 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-03 04:14:02,651 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-03 04:14:03,304 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 105 [2018-12-03 04:14:03,688 WARN L180 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-12-03 04:14:03,695 INFO L478 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 14 treesize of output 13 [2018-12-03 04:14:03,695 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-03 04:14:03,897 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-03 04:14:03,903 INFO L478 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 19 treesize of output 22 [2018-12-03 04:14:03,914 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:14:03,920 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 35 [2018-12-03 04:14:03,920 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-03 04:14:03,938 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:04,005 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-03 04:14:04,016 INFO L478 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 0 case distinctions, treesize of input 20 treesize of output 37 [2018-12-03 04:14:04,016 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-03 04:14:04,050 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:04,075 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:04,131 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:04,196 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 109 [2018-12-03 04:14:04,559 WARN L180 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-12-03 04:14:04,568 INFO L478 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 14 treesize of output 13 [2018-12-03 04:14:04,568 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-03 04:14:04,758 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-03 04:14:04,764 INFO L478 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 19 treesize of output 22 [2018-12-03 04:14:04,773 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:14:04,779 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 35 [2018-12-03 04:14:04,779 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-12-03 04:14:04,799 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:04,872 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-03 04:14:04,882 INFO L478 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 0 case distinctions, treesize of input 20 treesize of output 37 [2018-12-03 04:14:04,882 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-12-03 04:14:04,915 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:04,940 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:04,995 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:05,058 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 107 [2018-12-03 04:14:05,334 WARN L180 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-12-03 04:14:05,342 INFO L478 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 14 treesize of output 13 [2018-12-03 04:14:05,342 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-12-03 04:14:05,524 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 74 [2018-12-03 04:14:05,531 INFO L478 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 19 treesize of output 22 [2018-12-03 04:14:05,541 INFO L701 Elim1Store]: detected not equals via solver [2018-12-03 04:14:05,546 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 35 [2018-12-03 04:14:05,546 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-12-03 04:14:05,569 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:05,662 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-12-03 04:14:05,673 INFO L478 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 0 case distinctions, treesize of input 20 treesize of output 37 [2018-12-03 04:14:05,673 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-12-03 04:14:05,707 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:05,733 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:05,795 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 04:14:06,051 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 7 dim-0 vars, and 2 xjuncts. [2018-12-03 04:14:06,051 INFO L202 ElimStorePlain]: Needed 35 recursive calls to eliminate 8 variables, input treesize:263, output treesize:344 [2018-12-03 04:14:23,855 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-12-03 04:14:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:14:36,067 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 04:14:36,673 WARN L180 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-12-03 04:14:37,042 WARN L180 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-12-03 04:14:37,955 WARN L180 SmtUtils]: Spent 911.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-12-03 04:14:38,690 WARN L180 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2018-12-03 04:14:40,753 WARN L180 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 62 [2018-12-03 04:14:41,683 WARN L180 SmtUtils]: Spent 929.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-12-03 04:14:42,749 WARN L180 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 58 [2018-12-03 04:14:43,985 WARN L180 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 54 [2018-12-03 04:15:03,650 WARN L180 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-12-03 04:15:03,666 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-03 04:15:03,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2018-12-03 04:15:03,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-12-03 04:15:03,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-12-03 04:15:03,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=869, Unknown=74, NotChecked=0, Total=1056 [2018-12-03 04:15:03,667 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand 28 states. [2018-12-03 04:15:17,967 WARN L180 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2018-12-03 04:15:44,367 WARN L180 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2018-12-03 04:16:41,027 WARN L180 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2018-12-03 04:17:01,398 WARN L180 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2018-12-03 04:17:15,701 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2018-12-03 04:17:36,139 WARN L180 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2018-12-03 04:18:23,424 WARN L180 SmtUtils]: Spent 14.24 s on a formula simplification. DAG size of input: 180 DAG size of output: 118 [2018-12-03 04:18:52,096 WARN L180 SmtUtils]: Spent 5.61 s on a formula simplification. DAG size of input: 150 DAG size of output: 150 [2018-12-03 04:19:13,680 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-03 04:19:13,681 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:651) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:255) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:270) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2018-12-03 04:19:13,684 INFO L168 Benchmark]: Toolchain (without parser) took 491615.71 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 264.2 MB). Free memory was 939.3 MB in the beginning and 811.8 MB in the end (delta: 127.5 MB). Peak memory consumption was 391.7 MB. Max. memory is 11.5 GB. [2018-12-03 04:19:13,684 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 04:19:13,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -179.4 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2018-12-03 04:19:13,685 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 04:19:13,685 INFO L168 Benchmark]: Boogie Preprocessor took 25.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 04:19:13,685 INFO L168 Benchmark]: RCFGBuilder took 339.31 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: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. [2018-12-03 04:19:13,685 INFO L168 Benchmark]: TraceAbstraction took 490882.42 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 119.0 MB). Free memory was 1.1 GB in the beginning and 811.8 MB in the end (delta: 261.4 MB). Peak memory consumption was 380.4 MB. Max. memory is 11.5 GB. [2018-12-03 04:19:13,686 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 343.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -179.4 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 339.31 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: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 490882.42 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 119.0 MB). Free memory was 1.1 GB in the beginning and 811.8 MB in the end (delta: 261.4 MB). Peak memory consumption was 380.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...