./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/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 96af64d4a368cee387d4bcc82d147ef40e41512f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/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 96af64d4a368cee387d4bcc82d147ef40e41512f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: nested self-update not yet implemented: (store v_arrayElimCell_67 |__ldv_list_add_#in~new.offset| __ldv_list_add_~next.offset) --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 13:03:10,084 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 13:03:10,086 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 13:03:10,094 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 13:03:10,094 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 13:03:10,095 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 13:03:10,096 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 13:03:10,097 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 13:03:10,097 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 13:03:10,098 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 13:03:10,099 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 13:03:10,099 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 13:03:10,099 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 13:03:10,100 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 13:03:10,101 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 13:03:10,102 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 13:03:10,102 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 13:03:10,104 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 13:03:10,105 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 13:03:10,106 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 13:03:10,107 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 13:03:10,108 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 13:03:10,110 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 13:03:10,110 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 13:03:10,110 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 13:03:10,111 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 13:03:10,112 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 13:03:10,112 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 13:03:10,113 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 13:03:10,114 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 13:03:10,114 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 13:03:10,114 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 13:03:10,114 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 13:03:10,115 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 13:03:10,115 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 13:03:10,115 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 13:03:10,115 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 13:03:10,125 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 13:03:10,125 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 13:03:10,126 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 13:03:10,126 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 13:03:10,126 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 13:03:10,126 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 13:03:10,126 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 13:03:10,126 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 13:03:10,127 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 13:03:10,127 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 13:03:10,127 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 13:03:10,127 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 13:03:10,127 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 13:03:10,128 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 13:03:10,128 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 13:03:10,129 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 13:03:10,129 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 13:03:10,130 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 13:03:10,130 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 13:03:10,130 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 13:03:10,130 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 13:03:10,130 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 13:03:10,130 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 13:03:10,130 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 13:03:10,130 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 13:03:10,131 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 13:03:10,131 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 13:03:10,131 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 13:03:10,131 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 13:03:10,131 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:03:10,131 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 13:03:10,131 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 13:03:10,131 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 13:03:10,132 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 13:03:10,132 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 13:03:10,132 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 13:03:10,132 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 13:03:10,132 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_9400faf0-e743-4106-8221-01fa34004c20/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 -> 96af64d4a368cee387d4bcc82d147ef40e41512f [2018-11-23 13:03:10,156 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 13:03:10,165 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 13:03:10,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 13:03:10,169 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 13:03:10,170 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 13:03:10,170 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/../../sv-benchmarks/c/ldv-sets/test_mutex_true-unreach-call.i [2018-11-23 13:03:10,216 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/data/7096bbdfc/d162cb20e69b4ae8887e3391f36acfcb/FLAG67b9791d4 [2018-11-23 13:03:10,663 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 13:03:10,663 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/sv-benchmarks/c/ldv-sets/test_mutex_true-unreach-call.i [2018-11-23 13:03:10,670 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/data/7096bbdfc/d162cb20e69b4ae8887e3391f36acfcb/FLAG67b9791d4 [2018-11-23 13:03:10,679 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/data/7096bbdfc/d162cb20e69b4ae8887e3391f36acfcb [2018-11-23 13:03:10,682 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 13:03:10,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 13:03:10,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 13:03:10,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 13:03:10,686 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 13:03:10,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:03:10" (1/1) ... [2018-11-23 13:03:10,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@383c9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:03:10, skipping insertion in model container [2018-11-23 13:03:10,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:03:10" (1/1) ... [2018-11-23 13:03:10,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 13:03:10,723 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 13:03:10,941 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:03:10,947 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 13:03:11,037 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:03:11,065 INFO L195 MainTranslator]: Completed translation [2018-11-23 13:03:11,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:03:11 WrapperNode [2018-11-23 13:03:11,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 13:03:11,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 13:03:11,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 13:03:11,066 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 13:03:11,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:03:11" (1/1) ... [2018-11-23 13:03:11,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:03:11" (1/1) ... [2018-11-23 13:03:11,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 13:03:11,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 13:03:11,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 13:03:11,088 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 13:03:11,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:03:11" (1/1) ... [2018-11-23 13:03:11,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:03:11" (1/1) ... [2018-11-23 13:03:11,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:03:11" (1/1) ... [2018-11-23 13:03:11,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:03:11" (1/1) ... [2018-11-23 13:03:11,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:03:11" (1/1) ... [2018-11-23 13:03:11,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:03:11" (1/1) ... [2018-11-23 13:03:11,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:03:11" (1/1) ... [2018-11-23 13:03:11,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 13:03:11,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 13:03:11,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 13:03:11,116 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 13:03:11,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:03:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:03:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 13:03:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-11-23 13:03:11,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2018-11-23 13:03:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2018-11-23 13:03:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2018-11-23 13:03:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2018-11-23 13:03:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2018-11-23 13:03:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2018-11-23 13:03:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2018-11-23 13:03:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2018-11-23 13:03:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2018-11-23 13:03:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2018-11-23 13:03:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2018-11-23 13:03:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 13:03:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 13:03:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2018-11-23 13:03:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2018-11-23 13:03:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 13:03:11,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 13:03:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-23 13:03:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2018-11-23 13:03:11,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2018-11-23 13:03:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2018-11-23 13:03:11,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2018-11-23 13:03:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-23 13:03:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2018-11-23 13:03:11,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2018-11-23 13:03:11,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 13:03:11,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-11-23 13:03:11,153 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-11-23 13:03:11,153 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-11-23 13:03:11,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2018-11-23 13:03:11,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2018-11-23 13:03:11,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2018-11-23 13:03:11,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2018-11-23 13:03:11,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-11-23 13:03:11,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2018-11-23 13:03:11,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2018-11-23 13:03:11,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2018-11-23 13:03:11,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 13:03:11,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 13:03:11,422 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 13:03:11,422 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-23 13:03:11,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:03:11 BoogieIcfgContainer [2018-11-23 13:03:11,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 13:03:11,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 13:03:11,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 13:03:11,425 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 13:03:11,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:03:10" (1/3) ... [2018-11-23 13:03:11,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd3efad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:03:11, skipping insertion in model container [2018-11-23 13:03:11,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:03:11" (2/3) ... [2018-11-23 13:03:11,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd3efad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:03:11, skipping insertion in model container [2018-11-23 13:03:11,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:03:11" (3/3) ... [2018-11-23 13:03:11,427 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_true-unreach-call.i [2018-11-23 13:03:11,433 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 13:03:11,438 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-23 13:03:11,448 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-23 13:03:11,469 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 13:03:11,469 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 13:03:11,469 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 13:03:11,469 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 13:03:11,469 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 13:03:11,469 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 13:03:11,469 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 13:03:11,469 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 13:03:11,482 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2018-11-23 13:03:11,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-23 13:03:11,487 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:03:11,488 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:03:11,489 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:03:11,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:03:11,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1594759354, now seen corresponding path program 1 times [2018-11-23 13:03:11,494 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:03:11,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:03:11,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:03:11,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:03:11,531 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:03:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:03:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-23 13:03:11,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:03:11,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 13:03:11,621 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:03:11,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 13:03:11,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 13:03:11,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 13:03:11,634 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 2 states. [2018-11-23 13:03:11,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:03:11,658 INFO L93 Difference]: Finished difference Result 188 states and 225 transitions. [2018-11-23 13:03:11,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 13:03:11,659 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2018-11-23 13:03:11,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:03:11,665 INFO L225 Difference]: With dead ends: 188 [2018-11-23 13:03:11,666 INFO L226 Difference]: Without dead ends: 92 [2018-11-23 13:03:11,669 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 [2018-11-23 13:03:11,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-11-23 13:03:11,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-11-23 13:03:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-11-23 13:03:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2018-11-23 13:03:11,700 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 30 [2018-11-23 13:03:11,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:03:11,701 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2018-11-23 13:03:11,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 13:03:11,701 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2018-11-23 13:03:11,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-23 13:03:11,703 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:03:11,703 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:03:11,703 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:03:11,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:03:11,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1879861572, now seen corresponding path program 1 times [2018-11-23 13:03:11,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:03:11,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:03:11,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:03:11,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:03:11,705 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:03:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:03:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-23 13:03:11,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:03:11,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 13:03:11,770 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:03:11,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 13:03:11,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 13:03:11,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 13:03:11,772 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand 4 states. [2018-11-23 13:03:11,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:03:11,798 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2018-11-23 13:03:11,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 13:03:11,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-23 13:03:11,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:03:11,801 INFO L225 Difference]: With dead ends: 98 [2018-11-23 13:03:11,801 INFO L226 Difference]: Without dead ends: 96 [2018-11-23 13:03:11,801 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 [2018-11-23 13:03:11,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-11-23 13:03:11,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-11-23 13:03:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-11-23 13:03:11,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2018-11-23 13:03:11,811 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 108 transitions. Word has length 30 [2018-11-23 13:03:11,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:03:11,811 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 108 transitions. [2018-11-23 13:03:11,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 13:03:11,811 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 108 transitions. [2018-11-23 13:03:11,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-23 13:03:11,812 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:03:11,812 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:03:11,812 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:03:11,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:03:11,812 INFO L82 PathProgramCache]: Analyzing trace with hash -305258267, now seen corresponding path program 1 times [2018-11-23 13:03:11,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:03:11,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:03:11,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:03:11,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:03:11,814 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:03:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:03:11,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-23 13:03:11,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:03:11,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 13:03:11,911 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:03:11,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:03:11,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:03:11,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:03:11,912 INFO L87 Difference]: Start difference. First operand 96 states and 108 transitions. Second operand 5 states. [2018-11-23 13:03:12,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:03:12,263 INFO L93 Difference]: Finished difference Result 257 states and 311 transitions. [2018-11-23 13:03:12,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 13:03:12,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-11-23 13:03:12,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:03:12,266 INFO L225 Difference]: With dead ends: 257 [2018-11-23 13:03:12,266 INFO L226 Difference]: Without dead ends: 175 [2018-11-23 13:03:12,267 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-23 13:03:12,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-11-23 13:03:12,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 140. [2018-11-23 13:03:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-11-23 13:03:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 168 transitions. [2018-11-23 13:03:12,287 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 168 transitions. Word has length 30 [2018-11-23 13:03:12,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:03:12,287 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 168 transitions. [2018-11-23 13:03:12,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:03:12,287 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 168 transitions. [2018-11-23 13:03:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-11-23 13:03:12,289 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:03:12,289 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:03:12,290 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:03:12,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:03:12,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1875239642, now seen corresponding path program 1 times [2018-11-23 13:03:12,290 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:03:12,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:03:12,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:03:12,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:03:12,291 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:03:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:03:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-11-23 13:03:12,339 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:03:12,339 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 13:03:12,340 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 79 with the following transitions: [2018-11-23 13:03:12,341 INFO L202 CegarAbsIntRunner]: [8], [10], [26], [27], [30], [32], [35], [36], [47], [48], [82], [84], [91], [94], [95], [97], [105], [107], [111], [112], [118], [130], [131], [134], [135], [136], [137], [138], [139], [140], [141], [142], [143], [144], [150], [154], [155], [164], [165], [166], [167], [168], [169], [174], [175], [176] [2018-11-23 13:03:12,365 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 13:03:12,365 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 13:03:12,523 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 13:03:12,524 INFO L272 AbstractInterpreter]: Visited 33 different actions 39 times. Never merged. Never widened. Performed 341 root evaluator evaluations with a maximum evaluation depth of 9. Performed 341 inverse root evaluator evaluations with a maximum inverse evaluation depth of 9. Never found a fixpoint. Largest state had 31 variables. [2018-11-23 13:03:12,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:03:12,528 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 13:03:12,633 INFO L227 lantSequenceWeakener]: Weakened 37 states. On average, predicates are now at 72.44% of their original sizes. [2018-11-23 13:03:12,634 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 13:03:12,730 INFO L415 sIntCurrentIteration]: We unified 77 AI predicates to 77 [2018-11-23 13:03:12,730 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 13:03:12,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 13:03:12,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2018-11-23 13:03:12,731 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:03:12,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 13:03:12,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 13:03:12,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-23 13:03:12,733 INFO L87 Difference]: Start difference. First operand 140 states and 168 transitions. Second operand 11 states. [2018-11-23 13:03:13,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:03:13,751 INFO L93 Difference]: Finished difference Result 257 states and 308 transitions. [2018-11-23 13:03:13,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 13:03:13,751 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2018-11-23 13:03:13,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:03:13,753 INFO L225 Difference]: With dead ends: 257 [2018-11-23 13:03:13,753 INFO L226 Difference]: Without dead ends: 149 [2018-11-23 13:03:13,754 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-11-23 13:03:13,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-11-23 13:03:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 143. [2018-11-23 13:03:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-11-23 13:03:13,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2018-11-23 13:03:13,770 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 78 [2018-11-23 13:03:13,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:03:13,770 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2018-11-23 13:03:13,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 13:03:13,770 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2018-11-23 13:03:13,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-11-23 13:03:13,772 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:03:13,772 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:03:13,772 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:03:13,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:03:13,773 INFO L82 PathProgramCache]: Analyzing trace with hash 885640952, now seen corresponding path program 1 times [2018-11-23 13:03:13,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:03:13,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:03:13,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:03:13,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:03:13,774 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:03:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:03:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-11-23 13:03:13,950 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:03:13,950 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 13:03:13,951 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 79 with the following transitions: [2018-11-23 13:03:13,951 INFO L202 CegarAbsIntRunner]: [8], [10], [26], [27], [30], [32], [35], [36], [47], [48], [82], [84], [91], [94], [95], [97], [105], [107], [111], [112], [118], [120], [123], [130], [131], [134], [135], [136], [137], [138], [139], [140], [141], [142], [143], [144], [150], [154], [155], [164], [165], [166], [167], [168], [169], [174], [175], [176] [2018-11-23 13:03:13,952 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 13:03:13,952 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 13:03:14,030 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 13:03:14,030 INFO L272 AbstractInterpreter]: Visited 48 different actions 108 times. Merged at 8 different actions 20 times. Never widened. Performed 735 root evaluator evaluations with a maximum evaluation depth of 9. Performed 735 inverse root evaluator evaluations with a maximum inverse evaluation depth of 9. Found 3 fixpoints after 2 different actions. Largest state had 33 variables. [2018-11-23 13:03:14,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:03:14,057 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 13:03:14,057 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:03:14,058 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 13:03:14,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:03:14,069 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 13:03:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:03:14,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:03:14,204 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 7 treesize of output 5 [2018-11-23 13:03:14,208 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 [2018-11-23 13:03:14,209 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,210 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,221 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 7 treesize of output 5 [2018-11-23 13:03:14,229 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 [2018-11-23 13:03:14,229 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,230 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,242 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,242 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2018-11-23 13:03:14,285 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 7 treesize of output 5 [2018-11-23 13:03:14,287 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 [2018-11-23 13:03:14,287 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,289 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,294 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 7 treesize of output 5 [2018-11-23 13:03:14,296 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 [2018-11-23 13:03:14,296 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,297 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,301 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,301 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2018-11-23 13:03:14,407 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-23 13:03:14,407 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:03:14,721 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 8 treesize of output 6 [2018-11-23 13:03:14,723 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 6 treesize of output 1 [2018-11-23 13:03:14,723 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,724 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,730 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 8 treesize of output 6 [2018-11-23 13:03:14,732 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 6 treesize of output 4 [2018-11-23 13:03:14,732 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,734 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,738 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,738 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:41, output treesize:25 [2018-11-23 13:03:14,831 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 8 treesize of output 6 [2018-11-23 13:03:14,833 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 6 treesize of output 1 [2018-11-23 13:03:14,833 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,835 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,842 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 8 treesize of output 6 [2018-11-23 13:03:14,844 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 6 treesize of output 1 [2018-11-23 13:03:14,844 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,846 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,849 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,849 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2018-11-23 13:03:14,985 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 40 treesize of output 38 [2018-11-23 13:03:14,987 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 6 treesize of output 1 [2018-11-23 13:03:14,987 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,993 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:14,994 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 40 treesize of output 38 [2018-11-23 13:03:14,996 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 6 treesize of output 1 [2018-11-23 13:03:14,996 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:15,002 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:15,019 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 32 treesize of output 30 [2018-11-23 13:03:15,020 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 6 treesize of output 1 [2018-11-23 13:03:15,021 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:15,024 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:15,026 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 32 treesize of output 30 [2018-11-23 13:03:15,027 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 6 treesize of output 1 [2018-11-23 13:03:15,027 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:15,031 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:15,039 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-23 13:03:15,040 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 2 variables, input treesize:81, output treesize:49 [2018-11-23 13:03:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-11-23 13:03:15,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-23 13:03:15,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [13, 10] total 28 [2018-11-23 13:03:15,135 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:03:15,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 13:03:15,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 13:03:15,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2018-11-23 13:03:15,136 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand 10 states. [2018-11-23 13:03:15,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:03:15,816 INFO L93 Difference]: Finished difference Result 323 states and 386 transitions. [2018-11-23 13:03:15,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-23 13:03:15,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2018-11-23 13:03:15,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:03:15,818 INFO L225 Difference]: With dead ends: 323 [2018-11-23 13:03:15,818 INFO L226 Difference]: Without dead ends: 209 [2018-11-23 13:03:15,819 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=361, Invalid=1361, Unknown=0, NotChecked=0, Total=1722 [2018-11-23 13:03:15,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-11-23 13:03:15,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 146. [2018-11-23 13:03:15,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-11-23 13:03:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 169 transitions. [2018-11-23 13:03:15,840 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 169 transitions. Word has length 78 [2018-11-23 13:03:15,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:03:15,840 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 169 transitions. [2018-11-23 13:03:15,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 13:03:15,841 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 169 transitions. [2018-11-23 13:03:15,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-23 13:03:15,842 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:03:15,842 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:03:15,842 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:03:15,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:03:15,842 INFO L82 PathProgramCache]: Analyzing trace with hash 559822637, now seen corresponding path program 1 times [2018-11-23 13:03:15,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:03:15,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:03:15,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:03:15,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:03:15,844 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:03:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:03:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 13:03:16,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:03:16,958 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 13:03:16,958 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 69 with the following transitions: [2018-11-23 13:03:16,958 INFO L202 CegarAbsIntRunner]: [0], [2], [3], [8], [10], [26], [27], [28], [29], [47], [48], [82], [84], [87], [88], [91], [94], [95], [97], [100], [102], [107], [111], [112], [118], [120], [123], [130], [131], [132], [133], [134], [135], [136], [137], [138], [139], [140], [141], [142], [150], [164], [165], [166], [167], [168], [169], [170], [171], [172], [173], [174], [175], [176] [2018-11-23 13:03:16,962 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 13:03:16,962 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 13:03:17,025 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 13:03:17,026 INFO L272 AbstractInterpreter]: Visited 54 different actions 124 times. Merged at 6 different actions 16 times. Never widened. Performed 904 root evaluator evaluations with a maximum evaluation depth of 9. Performed 904 inverse root evaluator evaluations with a maximum inverse evaluation depth of 9. Found 4 fixpoints after 2 different actions. Largest state had 33 variables. [2018-11-23 13:03:17,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:03:17,032 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 13:03:17,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:03:17,032 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 13:03:17,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:03:17,055 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 13:03:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:03:17,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:03:17,141 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 6 treesize of output 5 [2018-11-23 13:03:17,141 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:17,144 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:17,145 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:16 [2018-11-23 13:03:17,305 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:17,306 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:17,307 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 17 treesize of output 21 [2018-11-23 13:03:17,307 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:17,314 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:17,314 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:25 [2018-11-23 13:03:17,401 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 7 treesize of output 5 [2018-11-23 13:03:17,403 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 [2018-11-23 13:03:17,403 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:17,405 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:17,414 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:17,414 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:10 [2018-11-23 13:03:17,722 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 48 [2018-11-23 13:03:17,746 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 10 treesize of output 9 [2018-11-23 13:03:17,746 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:17,801 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 58 [2018-11-23 13:03:17,813 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 49 [2018-11-23 13:03:17,818 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:17,819 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:17,832 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 2 case distinctions, treesize of input 43 treesize of output 63 [2018-11-23 13:03:17,832 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-11-23 13:03:17,913 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:17,915 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 41 treesize of output 45 [2018-11-23 13:03:17,916 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:17,979 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-23 13:03:18,145 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 47 treesize of output 52 [2018-11-23 13:03:18,149 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:18,151 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 36 treesize of output 46 [2018-11-23 13:03:18,151 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:18,165 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:18,308 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2018-11-23 13:03:18,311 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:18,325 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 58 [2018-11-23 13:03:18,325 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 4 xjuncts. [2018-11-23 13:03:18,366 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-23 13:03:18,556 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2018-11-23 13:03:18,559 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:18,562 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:18,585 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 67 [2018-11-23 13:03:18,585 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 4 xjuncts. [2018-11-23 13:03:18,669 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-23 13:03:18,673 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 32 [2018-11-23 13:03:18,675 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:18,679 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:18,687 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 4 case distinctions, treesize of input 21 treesize of output 44 [2018-11-23 13:03:18,687 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 4 xjuncts. [2018-11-23 13:03:18,735 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-23 13:03:18,739 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 34 [2018-11-23 13:03:18,741 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:18,749 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 36 [2018-11-23 13:03:18,750 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 2 xjuncts. [2018-11-23 13:03:18,779 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 13:03:19,058 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 6 xjuncts. [2018-11-23 13:03:19,086 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 53 [2018-11-23 13:03:19,091 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 42 treesize of output 50 [2018-11-23 13:03:19,096 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:19,098 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 [2018-11-23 13:03:19,098 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:19,118 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:19,198 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 47 [2018-11-23 13:03:19,201 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:19,202 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:19,211 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 2 case distinctions, treesize of input 41 treesize of output 64 [2018-11-23 13:03:19,212 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 2 xjuncts. [2018-11-23 13:03:19,274 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:19,276 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 39 treesize of output 46 [2018-11-23 13:03:19,276 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:19,328 INFO L267 ElimStorePlain]: Start of recursive call 21: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-23 13:03:19,488 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 50 [2018-11-23 13:03:19,504 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 52 [2018-11-23 13:03:19,507 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:19,509 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 44 treesize of output 57 [2018-11-23 13:03:19,510 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:19,549 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:19,550 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:03:19,561 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 2 case distinctions, treesize of input 46 treesize of output 81 [2018-11-23 13:03:19,561 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 2 xjuncts. [2018-11-23 13:03:19,617 INFO L267 ElimStorePlain]: Start of recursive call 25: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-23 13:03:19,702 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 37 treesize of output 36 [2018-11-23 13:03:19,702 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:19,771 INFO L267 ElimStorePlain]: Start of recursive call 24: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-23 13:03:19,971 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 57 [2018-11-23 13:03:19,974 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 48 treesize of output 53 [2018-11-23 13:03:19,974 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:20,011 INFO L267 ElimStorePlain]: Start of recursive call 29: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:20,121 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 39 [2018-11-23 13:03:20,123 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 8 treesize of output 13 [2018-11-23 13:03:20,124 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:20,136 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:20,142 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 37 [2018-11-23 13:03:20,145 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 8 treesize of output 13 [2018-11-23 13:03:20,145 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2018-11-23 13:03:20,156 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:03:20,196 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-23 13:03:20,326 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 9 xjuncts. [2018-11-23 13:03:20,425 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 6 xjuncts. [2018-11-23 13:03:20,425 INFO L202 ElimStorePlain]: Needed 34 recursive calls to eliminate 2 variables, input treesize:158, output treesize:746 [2018-11-23 13:03:24,756 WARN L180 SmtUtils]: Spent 3.78 s on a formula simplification that was a NOOP. DAG size: 106 [2018-11-23 13:03:31,734 WARN L180 SmtUtils]: Spent 6.44 s on a formula simplification that was a NOOP. DAG size: 107 [2018-11-23 13:04:49,265 WARN L180 SmtUtils]: Spent 55.25 s on a formula simplification that was a NOOP. DAG size: 171 [2018-11-23 13:05:46,107 WARN L180 SmtUtils]: Spent 22.63 s on a formula simplification. DAG size of input: 170 DAG size of output: 109 [2018-11-23 13:05:50,831 WARN L180 SmtUtils]: Spent 4.71 s on a formula simplification. DAG size of input: 222 DAG size of output: 81 [2018-11-23 13:05:50,837 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:50,839 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:50,842 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:50,842 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 16 treesize of output 13 [2018-11-23 13:05:50,842 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:50,977 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:50,977 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 170 treesize of output 118 [2018-11-23 13:05:50,982 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 0 case distinctions, treesize of input 20 treesize of output 19 [2018-11-23 13:05:50,982 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,006 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 85 treesize of output 59 [2018-11-23 13:05:51,030 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-23 13:05:51,030 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,047 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 49 treesize of output 52 [2018-11-23 13:05:51,049 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:51,050 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 43 [2018-11-23 13:05:51,057 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:51,058 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 53 [2018-11-23 13:05:51,058 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,065 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,075 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:51,076 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2018-11-23 13:05:51,079 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:51,079 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 34 treesize of output 45 [2018-11-23 13:05:51,079 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,093 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,098 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,103 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,112 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,113 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-23 13:05:51,113 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,114 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-23 13:05:51,114 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,115 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-23 13:05:51,115 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,115 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-23 13:05:51,115 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,128 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-23 13:05:51,128 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,129 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-23 13:05:51,129 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,139 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 219 treesize of output 163 [2018-11-23 13:05:51,144 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-23 13:05:51,144 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,161 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:51,170 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 158 treesize of output 90 [2018-11-23 13:05:51,215 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 2 case distinctions, treesize of input 66 treesize of output 75 [2018-11-23 13:05:51,215 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 2 xjuncts. [2018-11-23 13:05:51,244 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:51,249 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 72 treesize of output 74 [2018-11-23 13:05:51,252 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2018-11-23 13:05:51,257 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-11-23 13:05:51,257 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,262 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,277 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:51,279 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:51,280 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:51,280 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 65 [2018-11-23 13:05:51,283 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 46 [2018-11-23 13:05:51,284 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,294 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,304 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,307 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:51,308 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:51,309 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:51,311 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 81 [2018-11-23 13:05:51,325 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 45 [2018-11-23 13:05:51,330 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2018-11-23 13:05:51,330 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,344 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,357 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:51,360 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:05:51,361 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 13:05:51,362 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 52 [2018-11-23 13:05:51,366 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 13:05:51,376 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 4 case distinctions, treesize of input 27 treesize of output 32 [2018-11-23 13:05:51,377 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 13:05:51,385 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 13:05:51,394 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 13:05:51,418 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-23 13:05:51,442 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-23 13:05:51,443 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-23 13:05:51,443 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,443 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-23 13:05:51,444 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:51,484 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2018-11-23 13:05:51,484 INFO L202 ElimStorePlain]: Needed 33 recursive calls to eliminate 11 variables, input treesize:1206, output treesize:365 [2018-11-23 13:05:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 13:05:53,860 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:05:55,326 WARN L180 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-11-23 13:05:55,552 WARN L180 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-11-23 13:05:55,781 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-11-23 13:05:57,070 WARN L180 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-11-23 13:05:57,870 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 13:05:57,871 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 89971 column 11: unknown constant v_prenex_21 at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:221) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:114) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.assertTerm(ManagedScript.java:136) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:120) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.checkEqualityStatus(Elim1Store.java:668) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.analyzeIndexEqualities(Elim1Store.java:760) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:300) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$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) [2018-11-23 13:05:57,874 INFO L168 Benchmark]: Toolchain (without parser) took 167191.82 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 388.5 MB). Free memory was 955.5 MB in the beginning and 906.3 MB in the end (delta: 49.2 MB). Peak memory consumption was 437.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:05:57,874 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:05:57,874 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -184.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. [2018-11-23 13:05:57,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.00 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. [2018-11-23 13:05:57,875 INFO L168 Benchmark]: Boogie Preprocessor took 27.98 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-23 13:05:57,875 INFO L168 Benchmark]: RCFGBuilder took 306.10 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: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 11.5 GB. [2018-11-23 13:05:57,875 INFO L168 Benchmark]: TraceAbstraction took 166450.51 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 228.1 MB). Free memory was 1.1 GB in the beginning and 906.3 MB in the end (delta: 188.2 MB). Peak memory consumption was 416.3 MB. Max. memory is 11.5 GB. [2018-11-23 13:05:57,877 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 382.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -184.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.00 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 27.98 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 306.10 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: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 166450.51 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 228.1 MB). Free memory was 1.1 GB in the beginning and 906.3 MB in the end (delta: 188.2 MB). Peak memory consumption was 416.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 89971 column 11: unknown constant v_prenex_21 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 89971 column 11: unknown constant v_prenex_21: 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-aa41828 [2018-11-23 13:05:59,243 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 13:05:59,244 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 13:05:59,252 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 13:05:59,252 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 13:05:59,252 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 13:05:59,253 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 13:05:59,255 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 13:05:59,256 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 13:05:59,256 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 13:05:59,257 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 13:05:59,257 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 13:05:59,258 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 13:05:59,258 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 13:05:59,259 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 13:05:59,260 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 13:05:59,261 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 13:05:59,262 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 13:05:59,263 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 13:05:59,265 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 13:05:59,265 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 13:05:59,266 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 13:05:59,268 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 13:05:59,268 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 13:05:59,269 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 13:05:59,269 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 13:05:59,270 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 13:05:59,270 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 13:05:59,271 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 13:05:59,272 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 13:05:59,272 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 13:05:59,273 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 13:05:59,273 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 13:05:59,273 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 13:05:59,274 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 13:05:59,274 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 13:05:59,275 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-23 13:05:59,285 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 13:05:59,286 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 13:05:59,286 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 13:05:59,286 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 13:05:59,287 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 13:05:59,287 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 13:05:59,287 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 13:05:59,287 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 13:05:59,287 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 13:05:59,287 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 13:05:59,287 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 13:05:59,288 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 13:05:59,288 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 13:05:59,289 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 13:05:59,289 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 13:05:59,289 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 13:05:59,289 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 13:05:59,289 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 13:05:59,289 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 13:05:59,289 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 13:05:59,290 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 13:05:59,290 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 13:05:59,290 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 13:05:59,290 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 13:05:59,290 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 13:05:59,290 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 13:05:59,290 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 13:05:59,290 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:05:59,290 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 13:05:59,291 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 13:05:59,291 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 13:05:59,291 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-23 13:05:59,291 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 13:05:59,291 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 13:05:59,291 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 13:05:59,291 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_9400faf0-e743-4106-8221-01fa34004c20/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 -> 96af64d4a368cee387d4bcc82d147ef40e41512f [2018-11-23 13:05:59,320 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 13:05:59,328 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 13:05:59,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 13:05:59,331 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 13:05:59,331 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 13:05:59,331 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/../../sv-benchmarks/c/ldv-sets/test_mutex_true-unreach-call.i [2018-11-23 13:05:59,366 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/data/db7049f6c/c19e81108e3a4684950603ef119f4992/FLAG53bef7b30 [2018-11-23 13:05:59,811 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 13:05:59,811 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/sv-benchmarks/c/ldv-sets/test_mutex_true-unreach-call.i [2018-11-23 13:05:59,820 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/data/db7049f6c/c19e81108e3a4684950603ef119f4992/FLAG53bef7b30 [2018-11-23 13:05:59,829 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/data/db7049f6c/c19e81108e3a4684950603ef119f4992 [2018-11-23 13:05:59,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 13:05:59,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 13:05:59,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 13:05:59,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 13:05:59,837 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 13:05:59,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:05:59" (1/1) ... [2018-11-23 13:05:59,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea850e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:59, skipping insertion in model container [2018-11-23 13:05:59,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:05:59" (1/1) ... [2018-11-23 13:05:59,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 13:05:59,881 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 13:06:00,111 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:06:00,118 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 13:06:00,161 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:06:00,247 INFO L195 MainTranslator]: Completed translation [2018-11-23 13:06:00,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:00 WrapperNode [2018-11-23 13:06:00,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 13:06:00,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 13:06:00,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 13:06:00,248 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 13:06:00,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:00" (1/1) ... [2018-11-23 13:06:00,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:00" (1/1) ... [2018-11-23 13:06:00,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 13:06:00,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 13:06:00,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 13:06:00,268 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 13:06:00,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:00" (1/1) ... [2018-11-23 13:06:00,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:00" (1/1) ... [2018-11-23 13:06:00,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:00" (1/1) ... [2018-11-23 13:06:00,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:00" (1/1) ... [2018-11-23 13:06:00,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:00" (1/1) ... [2018-11-23 13:06:00,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:00" (1/1) ... [2018-11-23 13:06:00,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:00" (1/1) ... [2018-11-23 13:06:00,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 13:06:00,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 13:06:00,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 13:06:00,295 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 13:06:00,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:06:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 13:06:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-11-23 13:06:00,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2018-11-23 13:06:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2018-11-23 13:06:00,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2018-11-23 13:06:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2018-11-23 13:06:00,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2018-11-23 13:06:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2018-11-23 13:06:00,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2018-11-23 13:06:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2018-11-23 13:06:00,330 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2018-11-23 13:06:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2018-11-23 13:06:00,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2018-11-23 13:06:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 13:06:00,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 13:06:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2018-11-23 13:06:00,331 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2018-11-23 13:06:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 13:06:00,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 13:06:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-23 13:06:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2018-11-23 13:06:00,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2018-11-23 13:06:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2018-11-23 13:06:00,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2018-11-23 13:06:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-23 13:06:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2018-11-23 13:06:00,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2018-11-23 13:06:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 13:06:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-11-23 13:06:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-11-23 13:06:00,332 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-11-23 13:06:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2018-11-23 13:06:00,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2018-11-23 13:06:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2018-11-23 13:06:00,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2018-11-23 13:06:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-11-23 13:06:00,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2018-11-23 13:06:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2018-11-23 13:06:00,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2018-11-23 13:06:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 13:06:00,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 13:06:00,677 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 13:06:00,677 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-23 13:06:00,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:06:00 BoogieIcfgContainer [2018-11-23 13:06:00,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 13:06:00,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 13:06:00,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 13:06:00,681 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 13:06:00,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:05:59" (1/3) ... [2018-11-23 13:06:00,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c8050a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:06:00, skipping insertion in model container [2018-11-23 13:06:00,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:00" (2/3) ... [2018-11-23 13:06:00,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c8050a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:06:00, skipping insertion in model container [2018-11-23 13:06:00,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:06:00" (3/3) ... [2018-11-23 13:06:00,683 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_true-unreach-call.i [2018-11-23 13:06:00,692 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 13:06:00,699 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-23 13:06:00,711 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-23 13:06:00,732 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 13:06:00,732 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 13:06:00,732 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 13:06:00,732 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 13:06:00,732 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 13:06:00,733 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 13:06:00,733 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 13:06:00,733 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 13:06:00,733 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 13:06:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2018-11-23 13:06:00,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 13:06:00,750 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:06:00,751 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:06:00,752 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:06:00,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:06:00,755 INFO L82 PathProgramCache]: Analyzing trace with hash -2118021768, now seen corresponding path program 1 times [2018-11-23 13:06:00,758 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:06:00,758 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:06:00,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:06:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:06:00,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:06:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-23 13:06:00,869 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 13:06:00,872 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:06:00,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 13:06:00,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 13:06:00,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 13:06:00,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 13:06:00,884 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 4 states. [2018-11-23 13:06:00,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:06:00,930 INFO L93 Difference]: Finished difference Result 183 states and 223 transitions. [2018-11-23 13:06:00,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 13:06:00,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-23 13:06:00,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:06:00,939 INFO L225 Difference]: With dead ends: 183 [2018-11-23 13:06:00,939 INFO L226 Difference]: Without dead ends: 91 [2018-11-23 13:06:00,942 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 13:06:00,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-11-23 13:06:00,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-11-23 13:06:00,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-11-23 13:06:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2018-11-23 13:06:00,978 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 29 [2018-11-23 13:06:00,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:06:00,978 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2018-11-23 13:06:00,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 13:06:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2018-11-23 13:06:00,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 13:06:00,980 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:06:00,980 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:06:00,980 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:06:00,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:06:00,980 INFO L82 PathProgramCache]: Analyzing trace with hash -2067228113, now seen corresponding path program 1 times [2018-11-23 13:06:00,981 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:06:00,981 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:06:00,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:06:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:06:01,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:06:01,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-23 13:06:01,156 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 13:06:01,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:06:01,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 13:06:01,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:06:01,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:06:01,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:06:01,160 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 5 states. [2018-11-23 13:06:01,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:06:01,642 INFO L93 Difference]: Finished difference Result 235 states and 283 transitions. [2018-11-23 13:06:01,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 13:06:01,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-11-23 13:06:01,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:06:01,644 INFO L225 Difference]: With dead ends: 235 [2018-11-23 13:06:01,644 INFO L226 Difference]: Without dead ends: 158 [2018-11-23 13:06:01,645 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-23 13:06:01,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-11-23 13:06:01,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 132. [2018-11-23 13:06:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-11-23 13:06:01,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 160 transitions. [2018-11-23 13:06:01,664 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 160 transitions. Word has length 29 [2018-11-23 13:06:01,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:06:01,664 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 160 transitions. [2018-11-23 13:06:01,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:06:01,664 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 160 transitions. [2018-11-23 13:06:01,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-23 13:06:01,666 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:06:01,666 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:06:01,666 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:06:01,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:06:01,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1711544116, now seen corresponding path program 1 times [2018-11-23 13:06:01,667 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:06:01,667 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:06:01,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:06:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:06:01,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:06:01,781 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-23 13:06:01,781 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 13:06:01,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:06:01,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 13:06:01,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 13:06:01,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 13:06:01,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 13:06:01,783 INFO L87 Difference]: Start difference. First operand 132 states and 160 transitions. Second operand 4 states. [2018-11-23 13:06:01,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:06:01,799 INFO L93 Difference]: Finished difference Result 239 states and 291 transitions. [2018-11-23 13:06:01,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 13:06:01,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-11-23 13:06:01,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:06:01,801 INFO L225 Difference]: With dead ends: 239 [2018-11-23 13:06:01,801 INFO L226 Difference]: Without dead ends: 136 [2018-11-23 13:06:01,802 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 13:06:01,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-11-23 13:06:01,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-11-23 13:06:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-11-23 13:06:01,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 164 transitions. [2018-11-23 13:06:01,817 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 164 transitions. Word has length 73 [2018-11-23 13:06:01,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:06:01,817 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 164 transitions. [2018-11-23 13:06:01,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 13:06:01,817 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 164 transitions. [2018-11-23 13:06:01,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-23 13:06:01,819 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:06:01,819 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:06:01,819 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:06:01,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:06:01,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1933427362, now seen corresponding path program 1 times [2018-11-23 13:06:01,819 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:06:01,819 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:06:01,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:06:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:06:01,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:06:02,018 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 6 treesize of output 5 [2018-11-23 13:06:02,018 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:02,028 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:02,028 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:23 [2018-11-23 13:06:02,115 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:06:02,116 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:06:02,117 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-23 13:06:02,117 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:02,125 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:02,125 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:22 [2018-11-23 13:06:02,186 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 7 treesize of output 5 [2018-11-23 13:06:02,188 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 [2018-11-23 13:06:02,189 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:02,190 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:02,198 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 7 treesize of output 5 [2018-11-23 13:06:02,201 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 [2018-11-23 13:06:02,201 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:02,202 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:02,207 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:02,208 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2018-11-23 13:06:02,564 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 7 treesize of output 5 [2018-11-23 13:06:02,567 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 [2018-11-23 13:06:02,567 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:02,568 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:02,578 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 7 treesize of output 5 [2018-11-23 13:06:02,580 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 [2018-11-23 13:06:02,580 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:02,581 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:02,590 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:02,590 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2018-11-23 13:06:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-23 13:06:02,615 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:06:05,566 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 72 treesize of output 68 [2018-11-23 13:06:05,585 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 56 [2018-11-23 13:06:05,586 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 13:06:05,611 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 13:06:05,690 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 66 [2018-11-23 13:06:05,696 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 57 treesize of output 55 [2018-11-23 13:06:05,696 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:05,780 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 52 treesize of output 40 [2018-11-23 13:06:05,780 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:06,125 INFO L267 ElimStorePlain]: Start of recursive call 4: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:06,157 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-23 13:06:06,157 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:99, output treesize:67 [2018-11-23 13:06:07,269 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 57 [2018-11-23 13:06:07,274 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 48 treesize of output 40 [2018-11-23 13:06:07,275 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:07,308 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 43 treesize of output 35 [2018-11-23 13:06:07,309 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:07,319 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:07,324 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:07,324 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:67, output treesize:17 [2018-11-23 13:06:08,268 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-23 13:06:08,270 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:06:08,270 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 13:06:08,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:06:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:06:08,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:06:08,328 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 6 treesize of output 5 [2018-11-23 13:06:08,328 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:08,338 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:08,338 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:23 [2018-11-23 13:06:08,360 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:06:08,362 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:06:08,362 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 11 treesize of output 4 [2018-11-23 13:06:08,362 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:08,372 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:08,372 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:22 [2018-11-23 13:06:08,376 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 7 treesize of output 5 [2018-11-23 13:06:08,381 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 [2018-11-23 13:06:08,382 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:08,383 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:08,392 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 7 treesize of output 5 [2018-11-23 13:06:08,393 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 [2018-11-23 13:06:08,393 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:08,394 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:08,399 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:08,399 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2018-11-23 13:06:08,413 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 7 treesize of output 5 [2018-11-23 13:06:08,415 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 [2018-11-23 13:06:08,415 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:08,416 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:08,424 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 7 treesize of output 5 [2018-11-23 13:06:08,426 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 [2018-11-23 13:06:08,426 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:08,427 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:08,432 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:08,432 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2018-11-23 13:06:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-23 13:06:08,451 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:06:09,975 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 74 [2018-11-23 13:06:09,981 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 65 treesize of output 45 [2018-11-23 13:06:09,981 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:10,037 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 45 treesize of output 43 [2018-11-23 13:06:10,038 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:10,175 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:10,233 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-23 13:06:10,234 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:99, output treesize:67 [2018-11-23 13:06:10,408 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 57 [2018-11-23 13:06:10,414 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 48 treesize of output 40 [2018-11-23 13:06:10,414 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:10,448 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 21 [2018-11-23 13:06:10,448 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:10,463 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:10,468 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:10,468 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:67, output treesize:17 [2018-11-23 13:06:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-23 13:06:10,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 13:06:10,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 20, 23] total 41 [2018-11-23 13:06:10,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-11-23 13:06:10,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-11-23 13:06:10,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2018-11-23 13:06:10,884 INFO L87 Difference]: Start difference. First operand 136 states and 164 transitions. Second operand 41 states. [2018-11-23 13:06:14,380 WARN L180 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-11-23 13:06:28,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:06:28,313 INFO L93 Difference]: Finished difference Result 310 states and 397 transitions. [2018-11-23 13:06:28,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-23 13:06:28,314 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 73 [2018-11-23 13:06:28,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:06:28,316 INFO L225 Difference]: With dead ends: 310 [2018-11-23 13:06:28,316 INFO L226 Difference]: Without dead ends: 235 [2018-11-23 13:06:28,318 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 254 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1726 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=717, Invalid=5289, Unknown=0, NotChecked=0, Total=6006 [2018-11-23 13:06:28,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-11-23 13:06:28,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 187. [2018-11-23 13:06:28,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-11-23 13:06:28,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 242 transitions. [2018-11-23 13:06:28,342 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 242 transitions. Word has length 73 [2018-11-23 13:06:28,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:06:28,343 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 242 transitions. [2018-11-23 13:06:28,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-11-23 13:06:28,343 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 242 transitions. [2018-11-23 13:06:28,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-11-23 13:06:28,345 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:06:28,346 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:06:28,346 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:06:28,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:06:28,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1551257098, now seen corresponding path program 1 times [2018-11-23 13:06:28,347 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:06:28,347 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:06:28,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:06:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:06:28,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:06:28,503 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 6 treesize of output 5 [2018-11-23 13:06:28,503 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:28,510 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:28,510 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:23 [2018-11-23 13:06:28,575 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:06:28,576 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:06:28,577 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 11 treesize of output 4 [2018-11-23 13:06:28,577 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:28,587 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:28,588 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:22 [2018-11-23 13:06:28,635 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 7 treesize of output 5 [2018-11-23 13:06:28,637 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 [2018-11-23 13:06:28,637 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:28,638 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:28,645 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 7 treesize of output 5 [2018-11-23 13:06:28,646 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 [2018-11-23 13:06:28,647 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:28,647 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:28,651 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:28,652 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2018-11-23 13:06:28,975 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 7 treesize of output 5 [2018-11-23 13:06:28,977 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 [2018-11-23 13:06:28,977 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:28,978 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:28,986 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 7 treesize of output 5 [2018-11-23 13:06:28,987 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 [2018-11-23 13:06:28,988 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:28,988 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:28,993 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:28,993 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2018-11-23 13:06:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 31 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-23 13:06:29,372 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:06:34,964 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 128 [2018-11-23 13:06:34,970 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 115 [2018-11-23 13:06:34,971 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 13:06:35,075 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 116 [2018-11-23 13:06:35,077 INFO L267 ElimStorePlain]: Start of recursive call 4: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2018-11-23 13:06:35,218 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 111 [2018-11-23 13:06:35,219 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 13:06:35,350 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: 5 dim-0 vars, and 3 xjuncts. [2018-11-23 13:06:35,621 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 111 treesize of output 122 [2018-11-23 13:06:35,634 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 106 treesize of output 94 [2018-11-23 13:06:35,634 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:35,856 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 89 treesize of output 85 [2018-11-23 13:06:35,856 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:36,141 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 115 [2018-11-23 13:06:36,141 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-11-23 13:06:36,562 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 77 treesize of output 75 [2018-11-23 13:06:36,563 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:36,957 INFO L267 ElimStorePlain]: Start of recursive call 6: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:37,030 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 123 [2018-11-23 13:06:37,042 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 99 treesize of output 96 [2018-11-23 13:06:37,043 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:37,498 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 118 [2018-11-23 13:06:37,499 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 2 xjuncts. [2018-11-23 13:06:38,104 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 118 [2018-11-23 13:06:38,104 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-11-23 13:06:41,349 INFO L267 ElimStorePlain]: Start of recursive call 11: 13 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:41,419 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 120 [2018-11-23 13:06:41,441 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 94 treesize of output 92 [2018-11-23 13:06:41,442 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:41,842 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 13:06:41,846 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 80 [2018-11-23 13:06:41,847 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:42,901 INFO L267 ElimStorePlain]: Start of recursive call 15: 13 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:43,316 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-23 13:06:43,316 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 4 variables, input treesize:252, output treesize:99 [2018-11-23 13:06:44,276 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 105 [2018-11-23 13:06:44,284 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 90 treesize of output 76 [2018-11-23 13:06:44,284 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:44,676 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 100 [2018-11-23 13:06:44,680 INFO L267 ElimStorePlain]: Start of recursive call 4: 6 dim-0 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2018-11-23 13:06:44,750 INFO L267 ElimStorePlain]: Start of recursive call 2: 13 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:44,754 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:44,754 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:99, output treesize:17 [2018-11-23 13:06:46,235 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 84 treesize of output 47 [2018-11-23 13:06:46,235 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:46,241 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:46,241 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:47 [2018-11-23 13:06:46,531 INFO L267 ElimStorePlain]: Start of recursive call 1: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:46,531 INFO L202 ElimStorePlain]: Needed 1 recursive calls to eliminate 1 variables, input treesize:102, output treesize:1 [2018-11-23 13:06:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-23 13:06:46,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:06:46,576 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 13:06:46,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:06:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:06:46,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:06:46,625 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 7 treesize of output 5 [2018-11-23 13:06:46,628 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 [2018-11-23 13:06:46,628 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:46,629 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:46,637 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 7 treesize of output 5 [2018-11-23 13:06:46,639 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 [2018-11-23 13:06:46,639 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 13:06:46,640 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:46,644 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:06:46,645 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2018-11-23 13:06:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-23 13:06:47,286 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 13:06:47,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-23 13:06:47,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [25, 30] total 58 [2018-11-23 13:06:47,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-11-23 13:06:47,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-11-23 13:06:47,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=3049, Unknown=1, NotChecked=0, Total=3306 [2018-11-23 13:06:47,309 INFO L87 Difference]: Start difference. First operand 187 states and 242 transitions. Second operand 58 states. [2018-11-23 13:06:47,706 WARN L180 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-11-23 13:07:02,606 WARN L180 SmtUtils]: Spent 12.36 s on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-11-23 13:07:19,593 WARN L180 SmtUtils]: Spent 12.53 s on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2018-11-23 13:07:32,576 WARN L180 SmtUtils]: Spent 12.54 s on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2018-11-23 13:07:45,450 WARN L180 SmtUtils]: Spent 12.51 s on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2018-11-23 13:07:48,468 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-11-23 13:08:07,171 WARN L180 SmtUtils]: Spent 12.45 s on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2018-11-23 13:08:22,260 WARN L180 SmtUtils]: Spent 12.65 s on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-11-23 13:08:29,061 WARN L180 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-11-23 13:08:44,173 WARN L180 SmtUtils]: Spent 12.55 s on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-11-23 13:09:14,583 WARN L180 SmtUtils]: Spent 12.70 s on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2018-11-23 13:09:28,800 WARN L180 SmtUtils]: Spent 12.65 s on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2018-11-23 13:09:38,299 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2018-11-23 13:09:57,023 WARN L180 SmtUtils]: Spent 12.63 s on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2018-11-23 13:09:57,627 WARN L180 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2018-11-23 13:10:11,620 WARN L180 SmtUtils]: Spent 12.52 s on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2018-11-23 13:10:12,214 WARN L180 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2018-11-23 13:10:13,461 WARN L180 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-11-23 13:10:36,528 WARN L180 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2018-11-23 13:10:55,712 WARN L180 SmtUtils]: Spent 12.55 s on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-11-23 13:11:10,830 WARN L180 SmtUtils]: Spent 12.54 s on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2018-11-23 13:11:23,896 WARN L180 SmtUtils]: Spent 12.60 s on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2018-11-23 13:11:36,981 WARN L180 SmtUtils]: Spent 12.59 s on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2018-11-23 13:11:53,595 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2018-11-23 13:11:57,806 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2018-11-23 13:11:58,190 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2018-11-23 13:12:08,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:12:08,924 INFO L93 Difference]: Finished difference Result 549 states and 703 transitions. [2018-11-23 13:12:08,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-11-23 13:12:08,924 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 76 [2018-11-23 13:12:08,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:12:08,927 INFO L225 Difference]: With dead ends: 549 [2018-11-23 13:12:08,927 INFO L226 Difference]: Without dead ends: 400 [2018-11-23 13:12:08,931 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6086 ImplicationChecksByTransitivity, 277.9s TimeCoverageRelationStatistics Valid=2360, Invalid=20274, Unknown=16, NotChecked=0, Total=22650 [2018-11-23 13:12:08,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2018-11-23 13:12:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 267. [2018-11-23 13:12:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-11-23 13:12:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 352 transitions. [2018-11-23 13:12:08,965 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 352 transitions. Word has length 76 [2018-11-23 13:12:08,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:12:08,965 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 352 transitions. [2018-11-23 13:12:08,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-11-23 13:12:08,965 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 352 transitions. [2018-11-23 13:12:08,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-23 13:12:08,966 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:12:08,966 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:12:08,966 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:12:08,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:12:08,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1212876293, now seen corresponding path program 1 times [2018-11-23 13:12:08,967 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:12:08,967 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9400faf0-e743-4106-8221-01fa34004c20/bin-2019/utaipan/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:12:08,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:12:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:12:09,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:12:09,167 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 6 treesize of output 5 [2018-11-23 13:12:09,167 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:12:09,172 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:12:09,172 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:16 [2018-11-23 13:12:09,227 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:12:09,228 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:12:09,229 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 11 treesize of output 4 [2018-11-23 13:12:09,229 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:12:09,236 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:12:09,236 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:18 [2018-11-23 13:12:09,274 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 7 treesize of output 5 [2018-11-23 13:12:09,276 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 [2018-11-23 13:12:09,277 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:12:09,277 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:12:09,280 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:12:09,281 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:14, output treesize:7 [2018-11-23 13:12:09,592 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 48 [2018-11-23 13:12:09,760 WARN L180 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-11-23 13:12:09,787 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 10 treesize of output 9 [2018-11-23 13:12:09,788 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 13:12:10,323 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 58 [2018-11-23 13:12:10,332 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 47 treesize of output 52 [2018-11-23 13:12:10,345 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:12:10,359 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 36 treesize of output 46 [2018-11-23 13:12:10,359 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-23 13:12:10,478 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 13:12:12,742 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 49 [2018-11-23 13:12:12,755 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:12:12,763 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 41 treesize of output 45 [2018-11-23 13:12:12,763 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-23 13:12:13,380 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:12:13,384 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 13:12:13,431 INFO L303 Elim1Store]: Index analysis took 103 ms [2018-11-23 13:12:13,464 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 2 case distinctions, treesize of input 43 treesize of output 63 [2018-11-23 13:12:13,464 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-11-23 13:12:14,358 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-23 13:12:18,485 INFO L303 Elim1Store]: Index analysis took 118 ms [2018-11-23 13:12:18,546 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 55 [2018-11-23 13:12:18,748 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:12:18,749 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: nested self-update not yet implemented: (store v_arrayElimCell_67 |__ldv_list_add_#in~new.offset| __ldv_list_add_~next.offset) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.DerPreprocessor.constructReplacementForStoreCase(DerPreprocessor.java:248) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.DerPreprocessor.constructReplacement(DerPreprocessor.java:219) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.DerPreprocessor.constructReplacement(DerPreprocessor.java:210) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.DerPreprocessor.convert(DerPreprocessor.java:142) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:253) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:211) 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.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) 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.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) 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.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) 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) [2018-11-23 13:12:18,753 INFO L168 Benchmark]: Toolchain (without parser) took 378920.83 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 284.2 MB). Free memory was 944.4 MB in the beginning and 805.3 MB in the end (delta: 139.1 MB). Peak memory consumption was 423.2 MB. Max. memory is 11.5 GB. [2018-11-23 13:12:18,754 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:12:18,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -176.1 MB). Peak memory consumption was 34.9 MB. Max. memory is 11.5 GB. [2018-11-23 13:12:18,754 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.97 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-23 13:12:18,755 INFO L168 Benchmark]: Boogie Preprocessor took 26.71 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-23 13:12:18,755 INFO L168 Benchmark]: RCFGBuilder took 383.16 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: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:12:18,756 INFO L168 Benchmark]: TraceAbstraction took 378073.71 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 149.4 MB). Free memory was 1.1 GB in the beginning and 805.3 MB in the end (delta: 262.8 MB). Peak memory consumption was 412.2 MB. Max. memory is 11.5 GB. [2018-11-23 13:12:18,759 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 414.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -176.1 MB). Peak memory consumption was 34.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.97 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.71 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 383.16 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: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 378073.71 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 149.4 MB). Free memory was 1.1 GB in the beginning and 805.3 MB in the end (delta: 262.8 MB). Peak memory consumption was 412.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: nested self-update not yet implemented: (store v_arrayElimCell_67 |__ldv_list_add_#in~new.offset| __ldv_list_add_~next.offset) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: nested self-update not yet implemented: (store v_arrayElimCell_67 |__ldv_list_add_#in~new.offset| __ldv_list_add_~next.offset): de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.DerPreprocessor.constructReplacementForStoreCase(DerPreprocessor.java:248) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...