./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/packet_filter_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_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-data/packet_filter_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2ec1c4691200cd1b12315d54c84be55eae1c29c8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-data/packet_filter_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2ec1c4691200cd1b12315d54c84be55eae1c29c8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_46 input size 11 context size 11 output size 11 --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 23:51:44,059 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 23:51:44,060 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 23:51:44,067 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 23:51:44,067 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 23:51:44,067 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 23:51:44,068 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 23:51:44,069 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 23:51:44,070 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 23:51:44,071 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 23:51:44,072 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 23:51:44,072 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 23:51:44,072 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 23:51:44,073 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 23:51:44,074 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 23:51:44,074 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 23:51:44,075 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 23:51:44,076 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 23:51:44,078 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 23:51:44,079 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 23:51:44,079 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 23:51:44,080 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 23:51:44,082 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 23:51:44,082 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 23:51:44,082 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 23:51:44,083 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 23:51:44,083 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 23:51:44,084 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 23:51:44,084 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 23:51:44,085 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 23:51:44,085 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 23:51:44,086 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 23:51:44,086 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 23:51:44,086 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 23:51:44,086 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 23:51:44,087 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 23:51:44,087 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-22 23:51:44,097 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 23:51:44,097 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 23:51:44,098 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 23:51:44,098 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 23:51:44,098 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 23:51:44,098 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 23:51:44,098 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 23:51:44,099 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 23:51:44,099 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 23:51:44,099 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 23:51:44,099 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 23:51:44,099 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 23:51:44,099 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 23:51:44,100 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 23:51:44,100 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 23:51:44,100 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 23:51:44,100 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 23:51:44,100 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 23:51:44,100 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 23:51:44,100 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 23:51:44,101 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 23:51:44,101 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 23:51:44,101 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 23:51:44,101 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 23:51:44,101 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 23:51:44,101 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 23:51:44,102 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 23:51:44,102 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 23:51:44,102 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 23:51:44,102 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 23:51:44,102 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_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer 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 -> Automizer 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 -> 2ec1c4691200cd1b12315d54c84be55eae1c29c8 [2018-11-22 23:51:44,126 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 23:51:44,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 23:51:44,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 23:51:44,138 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 23:51:44,138 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 23:51:44,139 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/../../sv-benchmarks/c/heap-data/packet_filter_true-unreach-call.i [2018-11-22 23:51:44,178 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/data/583eba758/1ac7291a76e6488cbd0a0c1ee30903a9/FLAGba800e794 [2018-11-22 23:51:44,611 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 23:51:44,611 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/sv-benchmarks/c/heap-data/packet_filter_true-unreach-call.i [2018-11-22 23:51:44,619 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/data/583eba758/1ac7291a76e6488cbd0a0c1ee30903a9/FLAGba800e794 [2018-11-22 23:51:44,630 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/data/583eba758/1ac7291a76e6488cbd0a0c1ee30903a9 [2018-11-22 23:51:44,633 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 23:51:44,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 23:51:44,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 23:51:44,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 23:51:44,637 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 23:51:44,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:51:44" (1/1) ... [2018-11-22 23:51:44,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97dd10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:51:44, skipping insertion in model container [2018-11-22 23:51:44,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:51:44" (1/1) ... [2018-11-22 23:51:44,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 23:51:44,676 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 23:51:44,874 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:51:44,883 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 23:51:44,968 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:51:45,004 INFO L195 MainTranslator]: Completed translation [2018-11-22 23:51:45,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:51:45 WrapperNode [2018-11-22 23:51:45,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 23:51:45,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 23:51:45,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 23:51:45,005 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 23:51:45,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:51:45" (1/1) ... [2018-11-22 23:51:45,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:51:45" (1/1) ... [2018-11-22 23:51:45,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 23:51:45,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 23:51:45,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 23:51:45,035 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 23:51:45,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:51:45" (1/1) ... [2018-11-22 23:51:45,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:51:45" (1/1) ... [2018-11-22 23:51:45,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:51:45" (1/1) ... [2018-11-22 23:51:45,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:51:45" (1/1) ... [2018-11-22 23:51:45,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:51:45" (1/1) ... [2018-11-22 23:51:45,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:51:45" (1/1) ... [2018-11-22 23:51:45,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:51:45" (1/1) ... [2018-11-22 23:51:45,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 23:51:45,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 23:51:45,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 23:51:45,071 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 23:51:45,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:51:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/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 [2018-11-22 23:51:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 23:51:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-22 23:51:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-22 23:51:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure receive [2018-11-22 23:51:45,115 INFO L138 BoogieDeclarations]: Found implementation of procedure receive [2018-11-22 23:51:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure process_prio_queue [2018-11-22 23:51:45,115 INFO L138 BoogieDeclarations]: Found implementation of procedure process_prio_queue [2018-11-22 23:51:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 23:51:45,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 23:51:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2018-11-22 23:51:45,115 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2018-11-22 23:51:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 23:51:45,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 23:51:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-22 23:51:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-22 23:51:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2018-11-22 23:51:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure send [2018-11-22 23:51:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 23:51:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-11-22 23:51:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure process_normal_queue [2018-11-22 23:51:45,117 INFO L138 BoogieDeclarations]: Found implementation of procedure process_normal_queue [2018-11-22 23:51:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-11-22 23:51:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 23:51:45,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 23:51:45,477 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 23:51:45,477 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-22 23:51:45,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:51:45 BoogieIcfgContainer [2018-11-22 23:51:45,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 23:51:45,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 23:51:45,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 23:51:45,480 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 23:51:45,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:51:44" (1/3) ... [2018-11-22 23:51:45,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d64633a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:51:45, skipping insertion in model container [2018-11-22 23:51:45,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:51:45" (2/3) ... [2018-11-22 23:51:45,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d64633a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:51:45, skipping insertion in model container [2018-11-22 23:51:45,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:51:45" (3/3) ... [2018-11-22 23:51:45,483 INFO L112 eAbstractionObserver]: Analyzing ICFG packet_filter_true-unreach-call.i [2018-11-22 23:51:45,490 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 23:51:45,496 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-22 23:51:45,507 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-22 23:51:45,530 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 23:51:45,531 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 23:51:45,531 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 23:51:45,531 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 23:51:45,531 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 23:51:45,531 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 23:51:45,531 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 23:51:45,531 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 23:51:45,532 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 23:51:45,546 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2018-11-22 23:51:45,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-22 23:51:45,551 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:51:45,552 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:51:45,555 INFO L423 AbstractCegarLoop]: === Iteration 1 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:51:45,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:51:45,559 INFO L82 PathProgramCache]: Analyzing trace with hash -70149457, now seen corresponding path program 1 times [2018-11-22 23:51:45,560 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:51:45,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:51:45,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:51:45,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:51:45,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:51:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:51:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:51:45,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:51:45,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 23:51:45,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-22 23:51:45,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-22 23:51:45,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 23:51:45,680 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2018-11-22 23:51:45,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:51:45,700 INFO L93 Difference]: Finished difference Result 86 states and 110 transitions. [2018-11-22 23:51:45,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-22 23:51:45,701 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-11-22 23:51:45,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:51:45,708 INFO L225 Difference]: With dead ends: 86 [2018-11-22 23:51:45,709 INFO L226 Difference]: Without dead ends: 50 [2018-11-22 23:51:45,712 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 [2018-11-22 23:51:45,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-22 23:51:45,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-11-22 23:51:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-22 23:51:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2018-11-22 23:51:45,747 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 14 [2018-11-22 23:51:45,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:51:45,747 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2018-11-22 23:51:45,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-22 23:51:45,748 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2018-11-22 23:51:45,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-22 23:51:45,748 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:51:45,748 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:51:45,749 INFO L423 AbstractCegarLoop]: === Iteration 2 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:51:45,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:51:45,749 INFO L82 PathProgramCache]: Analyzing trace with hash 325102647, now seen corresponding path program 1 times [2018-11-22 23:51:45,749 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:51:45,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:51:45,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:51:45,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:51:45,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:51:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:51:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:51:45,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:51:45,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 23:51:45,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:51:45,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:51:45,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:51:45,798 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 3 states. [2018-11-22 23:51:45,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:51:45,814 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2018-11-22 23:51:45,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:51:45,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-22 23:51:45,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:51:45,816 INFO L225 Difference]: With dead ends: 53 [2018-11-22 23:51:45,816 INFO L226 Difference]: Without dead ends: 51 [2018-11-22 23:51:45,817 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:51:45,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-22 23:51:45,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-22 23:51:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-22 23:51:45,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2018-11-22 23:51:45,822 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 15 [2018-11-22 23:51:45,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:51:45,822 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2018-11-22 23:51:45,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:51:45,822 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2018-11-22 23:51:45,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-22 23:51:45,822 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:51:45,823 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:51:45,823 INFO L423 AbstractCegarLoop]: === Iteration 3 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:51:45,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:51:45,823 INFO L82 PathProgramCache]: Analyzing trace with hash 325104569, now seen corresponding path program 1 times [2018-11-22 23:51:45,823 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:51:45,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:51:45,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:51:45,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:51:45,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:51:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:51:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:51:45,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:51:45,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-22 23:51:45,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-22 23:51:45,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-22 23:51:45,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-22 23:51:45,908 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 6 states. [2018-11-22 23:51:46,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:51:46,069 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2018-11-22 23:51:46,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 23:51:46,069 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-11-22 23:51:46,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:51:46,072 INFO L225 Difference]: With dead ends: 82 [2018-11-22 23:51:46,072 INFO L226 Difference]: Without dead ends: 62 [2018-11-22 23:51:46,072 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-22 23:51:46,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-22 23:51:46,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2018-11-22 23:51:46,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-22 23:51:46,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-11-22 23:51:46,082 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 15 [2018-11-22 23:51:46,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:51:46,082 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-11-22 23:51:46,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-22 23:51:46,082 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-11-22 23:51:46,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-22 23:51:46,083 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:51:46,083 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:51:46,084 INFO L423 AbstractCegarLoop]: === Iteration 4 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:51:46,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:51:46,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1323640266, now seen corresponding path program 1 times [2018-11-22 23:51:46,084 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:51:46,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:51:46,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:51:46,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:51:46,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:51:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:51:46,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:51:46,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:51:46,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-22 23:51:46,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-22 23:51:46,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-22 23:51:46,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-22 23:51:46,144 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 6 states. [2018-11-22 23:51:46,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:51:46,273 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2018-11-22 23:51:46,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-22 23:51:46,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-11-22 23:51:46,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:51:46,274 INFO L225 Difference]: With dead ends: 71 [2018-11-22 23:51:46,274 INFO L226 Difference]: Without dead ends: 54 [2018-11-22 23:51:46,275 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-22 23:51:46,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-22 23:51:46,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2018-11-22 23:51:46,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-22 23:51:46,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2018-11-22 23:51:46,281 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 21 [2018-11-22 23:51:46,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:51:46,281 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2018-11-22 23:51:46,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-22 23:51:46,282 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2018-11-22 23:51:46,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-22 23:51:46,282 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:51:46,282 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-22 23:51:46,283 INFO L423 AbstractCegarLoop]: === Iteration 5 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:51:46,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:51:46,283 INFO L82 PathProgramCache]: Analyzing trace with hash 861249640, now seen corresponding path program 1 times [2018-11-22 23:51:46,283 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:51:46,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:51:46,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:51:46,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:51:46,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:51:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:51:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:51:46,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:51:46,625 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/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 [2018-11-22 23:51:46,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:51:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:51:46,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:51:46,722 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:51:46,727 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 15 treesize of output 27 [2018-11-22 23:51:46,731 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 23 treesize of output 15 [2018-11-22 23:51:46,732 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:51:46,738 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:51:46,747 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:51:46,748 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:29 [2018-11-22 23:51:46,784 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 0 case distinctions, treesize of input 17 treesize of output 20 [2018-11-22 23:51:46,785 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:51:46,795 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-22 23:51:46,795 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:34 [2018-11-22 23:51:46,849 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:51:46,854 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:51:46,877 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:51:46,882 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:51:46,901 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:51:46,905 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:51:46,922 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:51:46,926 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:51:46,938 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2018-11-22 23:51:46,938 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:100, output treesize:48 [2018-11-22 23:51:50,993 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:51:50,995 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:51:50,996 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:51:50,997 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 [2018-11-22 23:51:50,997 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:51:51,019 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 29 treesize of output 30 [2018-11-22 23:51:51,022 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 18 treesize of output 21 [2018-11-22 23:51:51,026 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:51:51,028 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 29 [2018-11-22 23:51:51,031 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:51:51,032 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:51:51,033 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:51:51,037 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 23 treesize of output 46 [2018-11-22 23:51:51,038 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 23:51:51,053 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:51:51,062 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:51:51,075 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:51:51,102 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 29 treesize of output 30 [2018-11-22 23:51:51,105 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 18 treesize of output 21 [2018-11-22 23:51:51,109 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:51:51,111 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 29 [2018-11-22 23:51:51,115 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:51:51,116 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:51:51,117 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:51:51,121 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 23 treesize of output 46 [2018-11-22 23:51:51,121 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-22 23:51:51,130 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:51:51,136 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:51:51,144 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:51:51,162 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:51:51,162 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:76, output treesize:15 [2018-11-22 23:51:51,176 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-22 23:51:51,178 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:51:51,178 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:51:51,180 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:51:51,186 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 15 treesize of output 11 [2018-11-22 23:51:51,188 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 11 treesize of output 3 [2018-11-22 23:51:51,188 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 23:51:51,192 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:51:51,195 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:51:51,196 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2018-11-22 23:51:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:51:51,262 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:51:51,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2018-11-22 23:51:51,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-22 23:51:51,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-22 23:51:51,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=123, Unknown=2, NotChecked=0, Total=156 [2018-11-22 23:51:51,263 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 13 states. [2018-11-22 23:51:55,539 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2018-11-22 23:52:08,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:52:08,438 INFO L93 Difference]: Finished difference Result 93 states and 116 transitions. [2018-11-22 23:52:08,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-22 23:52:08,438 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2018-11-22 23:52:08,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:52:08,439 INFO L225 Difference]: With dead ends: 93 [2018-11-22 23:52:08,439 INFO L226 Difference]: Without dead ends: 73 [2018-11-22 23:52:08,439 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=59, Invalid=244, Unknown=3, NotChecked=0, Total=306 [2018-11-22 23:52:08,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-11-22 23:52:08,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2018-11-22 23:52:08,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-22 23:52:08,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2018-11-22 23:52:08,450 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 26 [2018-11-22 23:52:08,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:52:08,450 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2018-11-22 23:52:08,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-22 23:52:08,450 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2018-11-22 23:52:08,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-22 23:52:08,451 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:52:08,451 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:52:08,451 INFO L423 AbstractCegarLoop]: === Iteration 6 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:52:08,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:52:08,452 INFO L82 PathProgramCache]: Analyzing trace with hash 541228919, now seen corresponding path program 1 times [2018-11-22 23:52:08,452 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:52:08,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:52:08,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:52:08,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:52:08,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:52:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:52:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:52:08,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:52:08,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-22 23:52:08,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 23:52:08,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 23:52:08,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-22 23:52:08,525 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 7 states. [2018-11-22 23:52:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:52:08,599 INFO L93 Difference]: Finished difference Result 123 states and 153 transitions. [2018-11-22 23:52:08,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 23:52:08,600 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2018-11-22 23:52:08,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:52:08,601 INFO L225 Difference]: With dead ends: 123 [2018-11-22 23:52:08,601 INFO L226 Difference]: Without dead ends: 78 [2018-11-22 23:52:08,601 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-22 23:52:08,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-11-22 23:52:08,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2018-11-22 23:52:08,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-11-22 23:52:08,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2018-11-22 23:52:08,608 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 32 [2018-11-22 23:52:08,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:52:08,609 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2018-11-22 23:52:08,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 23:52:08,609 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2018-11-22 23:52:08,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-22 23:52:08,610 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:52:08,610 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:52:08,610 INFO L423 AbstractCegarLoop]: === Iteration 7 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:52:08,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:52:08,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1913735077, now seen corresponding path program 1 times [2018-11-22 23:52:08,610 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:52:08,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:52:08,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:52:08,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:52:08,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:52:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:52:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:52:08,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:52:08,938 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/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 [2018-11-22 23:52:08,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:52:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:52:08,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:52:08,978 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 9 treesize of output 12 [2018-11-22 23:52:08,994 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-22 23:52:08,994 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:08,997 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:09,002 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:09,003 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:25 [2018-11-22 23:52:09,010 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-22 23:52:09,010 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:09,015 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:09,016 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:25 [2018-11-22 23:52:09,057 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:09,064 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:09,097 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:09,103 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:09,127 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:09,136 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:09,152 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:09,157 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:09,167 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:09,167 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:100, output treesize:48 [2018-11-22 23:52:13,217 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:13,218 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:13,218 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 [2018-11-22 23:52:13,219 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:13,235 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 29 treesize of output 30 [2018-11-22 23:52:13,237 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 18 treesize of output 21 [2018-11-22 23:52:13,240 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:13,241 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 29 [2018-11-22 23:52:13,244 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:13,245 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:13,258 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:13,262 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 23 treesize of output 46 [2018-11-22 23:52:13,262 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:13,271 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:13,277 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:13,285 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:13,302 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 29 treesize of output 30 [2018-11-22 23:52:13,304 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 18 treesize of output 21 [2018-11-22 23:52:13,308 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:13,314 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 29 [2018-11-22 23:52:13,322 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:13,334 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:13,338 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:13,344 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 23 treesize of output 46 [2018-11-22 23:52:13,344 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:13,352 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:13,357 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:13,363 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:13,375 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:13,375 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 11 variables, input treesize:67, output treesize:15 [2018-11-22 23:52:13,424 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 15 treesize of output 11 [2018-11-22 23:52:13,426 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 11 treesize of output 3 [2018-11-22 23:52:13,426 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:13,427 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:13,432 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-22 23:52:13,434 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:52:13,434 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:13,435 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:13,437 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:13,437 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2018-11-22 23:52:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:52:13,486 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:52:13,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 14 [2018-11-22 23:52:13,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-22 23:52:13,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-22 23:52:13,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=144, Unknown=2, NotChecked=0, Total=182 [2018-11-22 23:52:13,487 INFO L87 Difference]: Start difference. First operand 73 states and 89 transitions. Second operand 14 states. [2018-11-22 23:52:23,830 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-11-22 23:52:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:52:36,468 INFO L93 Difference]: Finished difference Result 93 states and 117 transitions. [2018-11-22 23:52:36,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-22 23:52:36,469 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2018-11-22 23:52:36,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:52:36,469 INFO L225 Difference]: With dead ends: 93 [2018-11-22 23:52:36,469 INFO L226 Difference]: Without dead ends: 76 [2018-11-22 23:52:36,470 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=76, Invalid=297, Unknown=7, NotChecked=0, Total=380 [2018-11-22 23:52:36,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-11-22 23:52:36,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2018-11-22 23:52:36,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-22 23:52:36,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2018-11-22 23:52:36,479 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 32 [2018-11-22 23:52:36,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:52:36,479 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2018-11-22 23:52:36,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-22 23:52:36,479 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2018-11-22 23:52:36,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-22 23:52:36,480 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:52:36,480 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:52:36,480 INFO L423 AbstractCegarLoop]: === Iteration 8 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:52:36,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:52:36,481 INFO L82 PathProgramCache]: Analyzing trace with hash 760083637, now seen corresponding path program 1 times [2018-11-22 23:52:36,481 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:52:36,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:52:36,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:52:36,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:52:36,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:52:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:52:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:52:36,801 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:52:36,801 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:52:36,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:52:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:52:36,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:52:36,846 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:36,847 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 15 treesize of output 27 [2018-11-22 23:52:36,850 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 23 treesize of output 15 [2018-11-22 23:52:36,850 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:36,854 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:36,859 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:36,859 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:18 [2018-11-22 23:52:36,879 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:36,882 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:36,882 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:36,883 INFO L478 Elim1Store]: Elim1 did not use 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 34 [2018-11-22 23:52:36,883 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:36,892 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:36,892 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:31 [2018-11-22 23:52:37,167 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:37,168 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:37,170 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:37,170 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:37,171 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 51 [2018-11-22 23:52:37,171 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:37,183 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:37,184 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:36 [2018-11-22 23:52:37,240 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 17 [2018-11-22 23:52:37,242 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 17 treesize of output 5 [2018-11-22 23:52:37,242 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:37,245 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:37,256 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:37,257 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:56, output treesize:41 [2018-11-22 23:52:37,969 WARN L180 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 98 [2018-11-22 23:52:38,001 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2018-11-22 23:52:38,020 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 41 treesize of output 47 [2018-11-22 23:52:38,021 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-22 23:52:38,163 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 40 treesize of output 37 [2018-11-22 23:52:38,163 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:38,171 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 36 [2018-11-22 23:52:38,172 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:38,254 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 25 treesize of output 19 [2018-11-22 23:52:38,275 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2018-11-22 23:52:38,317 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 21 treesize of output 41 [2018-11-22 23:52:38,318 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 6 xjuncts. [2018-11-22 23:52:38,369 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 23:52:38,404 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 23:52:38,505 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-22 23:52:38,527 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2018-11-22 23:52:38,532 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 15 treesize of output 18 [2018-11-22 23:52:38,540 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 18 treesize of output 19 [2018-11-22 23:52:38,541 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:38,554 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:38,607 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 30 treesize of output 29 [2018-11-22 23:52:38,618 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 18 treesize of output 7 [2018-11-22 23:52:38,618 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:38,634 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:38,661 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:38,845 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2018-11-22 23:52:38,850 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 15 treesize of output 18 [2018-11-22 23:52:38,857 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 18 treesize of output 19 [2018-11-22 23:52:38,858 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:38,868 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:38,894 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 30 treesize of output 29 [2018-11-22 23:52:38,900 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2018-11-22 23:52:38,900 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:38,909 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:38,919 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:38,933 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2018-11-22 23:52:38,937 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 39 treesize of output 36 [2018-11-22 23:52:38,937 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:38,957 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 36 treesize of output 28 [2018-11-22 23:52:38,994 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 45 [2018-11-22 23:52:39,023 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 39 [2018-11-22 23:52:39,235 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:52:39,236 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_prenex_2 input size 22 context size 22 output size 22 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) 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.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) [2018-11-22 23:52:39,238 INFO L168 Benchmark]: Toolchain (without parser) took 54604.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.8 MB). Free memory was 955.5 MB in the beginning and 892.4 MB in the end (delta: 63.1 MB). Peak memory consumption was 242.9 MB. Max. memory is 11.5 GB. [2018-11-22 23:52:39,238 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:52:39,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -184.7 MB). Peak memory consumption was 29.0 MB. Max. memory is 11.5 GB. [2018-11-22 23:52:39,239 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.89 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:52:39,239 INFO L168 Benchmark]: Boogie Preprocessor took 35.76 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:52:39,239 INFO L168 Benchmark]: RCFGBuilder took 406.32 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: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 11.5 GB. [2018-11-22 23:52:39,240 INFO L168 Benchmark]: TraceAbstraction took 53759.61 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 25.7 MB). Free memory was 1.1 GB in the beginning and 892.4 MB in the end (delta: 205.5 MB). Peak memory consumption was 231.2 MB. Max. memory is 11.5 GB. [2018-11-22 23:52:39,241 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 369.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -184.7 MB). Peak memory consumption was 29.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.89 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.76 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 406.32 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: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 53759.61 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 25.7 MB). Free memory was 1.1 GB in the beginning and 892.4 MB in the end (delta: 205.5 MB). Peak memory consumption was 231.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_prenex_2 input size 22 context size 22 output size 22 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_prenex_2 input size 22 context size 22 output size 22: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-aa41828 [2018-11-22 23:52:40,647 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 23:52:40,648 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 23:52:40,655 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 23:52:40,655 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 23:52:40,655 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 23:52:40,656 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 23:52:40,657 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 23:52:40,658 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 23:52:40,659 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 23:52:40,660 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 23:52:40,660 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 23:52:40,660 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 23:52:40,661 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 23:52:40,662 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 23:52:40,662 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 23:52:40,663 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 23:52:40,664 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 23:52:40,665 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 23:52:40,667 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 23:52:40,667 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 23:52:40,668 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 23:52:40,670 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 23:52:40,670 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 23:52:40,670 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 23:52:40,671 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 23:52:40,672 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 23:52:40,672 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 23:52:40,673 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 23:52:40,673 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 23:52:40,673 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 23:52:40,674 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 23:52:40,674 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 23:52:40,674 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 23:52:40,675 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 23:52:40,675 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 23:52:40,675 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-22 23:52:40,686 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 23:52:40,686 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 23:52:40,686 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 23:52:40,687 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 23:52:40,687 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 23:52:40,687 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 23:52:40,687 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 23:52:40,687 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 23:52:40,688 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 23:52:40,688 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 23:52:40,688 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 23:52:40,688 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 23:52:40,688 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 23:52:40,688 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 23:52:40,688 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-22 23:52:40,688 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-22 23:52:40,688 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 23:52:40,689 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 23:52:40,689 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 23:52:40,689 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 23:52:40,689 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 23:52:40,689 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 23:52:40,689 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 23:52:40,689 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 23:52:40,691 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 23:52:40,691 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 23:52:40,691 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 23:52:40,691 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 23:52:40,691 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-22 23:52:40,691 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 23:52:40,692 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-22 23:52:40,692 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-22 23:52:40,692 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_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer 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 -> Automizer 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 -> 2ec1c4691200cd1b12315d54c84be55eae1c29c8 [2018-11-22 23:52:40,721 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 23:52:40,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 23:52:40,731 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 23:52:40,732 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 23:52:40,732 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 23:52:40,733 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/../../sv-benchmarks/c/heap-data/packet_filter_true-unreach-call.i [2018-11-22 23:52:40,773 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/data/e46f1fbee/3e47d65170d548b4ba20351162275480/FLAG1c17038a5 [2018-11-22 23:52:41,172 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 23:52:41,173 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/sv-benchmarks/c/heap-data/packet_filter_true-unreach-call.i [2018-11-22 23:52:41,183 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/data/e46f1fbee/3e47d65170d548b4ba20351162275480/FLAG1c17038a5 [2018-11-22 23:52:41,541 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/data/e46f1fbee/3e47d65170d548b4ba20351162275480 [2018-11-22 23:52:41,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 23:52:41,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 23:52:41,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 23:52:41,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 23:52:41,548 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 23:52:41,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:52:41" (1/1) ... [2018-11-22 23:52:41,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20524921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:52:41, skipping insertion in model container [2018-11-22 23:52:41,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:52:41" (1/1) ... [2018-11-22 23:52:41,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 23:52:41,598 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 23:52:41,900 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:52:41,913 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 23:52:41,964 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:52:42,062 INFO L195 MainTranslator]: Completed translation [2018-11-22 23:52:42,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:52:42 WrapperNode [2018-11-22 23:52:42,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 23:52:42,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 23:52:42,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 23:52:42,064 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 23:52:42,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:52:42" (1/1) ... [2018-11-22 23:52:42,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:52:42" (1/1) ... [2018-11-22 23:52:42,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 23:52:42,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 23:52:42,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 23:52:42,094 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 23:52:42,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:52:42" (1/1) ... [2018-11-22 23:52:42,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:52:42" (1/1) ... [2018-11-22 23:52:42,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:52:42" (1/1) ... [2018-11-22 23:52:42,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:52:42" (1/1) ... [2018-11-22 23:52:42,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:52:42" (1/1) ... [2018-11-22 23:52:42,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:52:42" (1/1) ... [2018-11-22 23:52:42,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:52:42" (1/1) ... [2018-11-22 23:52:42,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 23:52:42,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 23:52:42,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 23:52:42,138 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 23:52:42,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:52:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/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 [2018-11-22 23:52:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 23:52:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-22 23:52:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure receive [2018-11-22 23:52:42,191 INFO L138 BoogieDeclarations]: Found implementation of procedure receive [2018-11-22 23:52:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure process_prio_queue [2018-11-22 23:52:42,191 INFO L138 BoogieDeclarations]: Found implementation of procedure process_prio_queue [2018-11-22 23:52:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 23:52:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 23:52:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2018-11-22 23:52:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2018-11-22 23:52:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 23:52:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 23:52:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-22 23:52:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-22 23:52:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2018-11-22 23:52:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure send [2018-11-22 23:52:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 23:52:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-22 23:52:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-11-22 23:52:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2018-11-22 23:52:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure process_normal_queue [2018-11-22 23:52:42,194 INFO L138 BoogieDeclarations]: Found implementation of procedure process_normal_queue [2018-11-22 23:52:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 23:52:42,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 23:52:44,566 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 23:52:44,566 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-22 23:52:44,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:52:44 BoogieIcfgContainer [2018-11-22 23:52:44,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 23:52:44,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 23:52:44,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 23:52:44,570 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 23:52:44,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:52:41" (1/3) ... [2018-11-22 23:52:44,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e43ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:52:44, skipping insertion in model container [2018-11-22 23:52:44,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:52:42" (2/3) ... [2018-11-22 23:52:44,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e43ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:52:44, skipping insertion in model container [2018-11-22 23:52:44,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:52:44" (3/3) ... [2018-11-22 23:52:44,574 INFO L112 eAbstractionObserver]: Analyzing ICFG packet_filter_true-unreach-call.i [2018-11-22 23:52:44,584 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 23:52:44,591 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-22 23:52:44,602 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-22 23:52:44,623 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 23:52:44,623 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 23:52:44,623 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 23:52:44,623 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 23:52:44,624 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 23:52:44,624 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 23:52:44,624 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 23:52:44,624 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 23:52:44,624 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 23:52:44,636 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2018-11-22 23:52:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-22 23:52:44,640 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:52:44,641 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:52:44,643 INFO L423 AbstractCegarLoop]: === Iteration 1 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:52:44,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:52:44,647 INFO L82 PathProgramCache]: Analyzing trace with hash -810451345, now seen corresponding path program 1 times [2018-11-22 23:52:44,650 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 23:52:44,650 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/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 [2018-11-22 23:52:44,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:52:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:52:44,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:52:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:52:44,735 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 23:52:44,739 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:52:44,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 23:52:44,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:52:44,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:52:44,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:52:44,754 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2018-11-22 23:52:44,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:52:44,791 INFO L93 Difference]: Finished difference Result 86 states and 111 transitions. [2018-11-22 23:52:44,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:52:44,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-22 23:52:44,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:52:44,801 INFO L225 Difference]: With dead ends: 86 [2018-11-22 23:52:44,801 INFO L226 Difference]: Without dead ends: 50 [2018-11-22 23:52:44,804 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:52:44,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-22 23:52:44,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-11-22 23:52:44,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-22 23:52:44,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2018-11-22 23:52:44,838 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 14 [2018-11-22 23:52:44,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:52:44,838 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2018-11-22 23:52:44,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:52:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2018-11-22 23:52:44,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-22 23:52:44,839 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:52:44,839 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:52:44,839 INFO L423 AbstractCegarLoop]: === Iteration 2 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:52:44,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:52:44,840 INFO L82 PathProgramCache]: Analyzing trace with hash -810449423, now seen corresponding path program 1 times [2018-11-22 23:52:44,840 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 23:52:44,840 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/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 [2018-11-22 23:52:44,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:52:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:52:44,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:52:44,965 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-22 23:52:44,969 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:52:44,970 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:44,975 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:44,986 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 15 treesize of output 11 [2018-11-22 23:52:44,990 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:52:44,990 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:44,994 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:44,999 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:44,999 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2018-11-22 23:52:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:52:45,041 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 23:52:45,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:52:45,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-22 23:52:45,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-22 23:52:45,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-22 23:52:45,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-22 23:52:45,046 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 6 states. [2018-11-22 23:52:47,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:52:47,217 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2018-11-22 23:52:47,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 23:52:47,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-11-22 23:52:47,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:52:47,221 INFO L225 Difference]: With dead ends: 80 [2018-11-22 23:52:47,221 INFO L226 Difference]: Without dead ends: 60 [2018-11-22 23:52:47,222 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-22 23:52:47,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-22 23:52:47,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2018-11-22 23:52:47,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-22 23:52:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2018-11-22 23:52:47,235 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 14 [2018-11-22 23:52:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:52:47,236 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2018-11-22 23:52:47,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-22 23:52:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2018-11-22 23:52:47,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-22 23:52:47,237 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:52:47,237 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:52:47,238 INFO L423 AbstractCegarLoop]: === Iteration 3 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:52:47,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:52:47,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1042787858, now seen corresponding path program 1 times [2018-11-22 23:52:47,239 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 23:52:47,239 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/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 [2018-11-22 23:52:47,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:52:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:52:47,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:52:47,369 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-22 23:52:47,372 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:52:47,372 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:47,375 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:47,385 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-22 23:52:47,388 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:52:47,389 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:47,391 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:47,395 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:47,395 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2018-11-22 23:52:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:52:47,449 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 23:52:47,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:52:47,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-22 23:52:47,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 23:52:47,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 23:52:47,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-22 23:52:47,454 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 7 states. [2018-11-22 23:52:55,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:52:55,728 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2018-11-22 23:52:55,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 23:52:55,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-22 23:52:55,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:52:55,730 INFO L225 Difference]: With dead ends: 70 [2018-11-22 23:52:55,730 INFO L226 Difference]: Without dead ends: 53 [2018-11-22 23:52:55,730 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-22 23:52:55,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-22 23:52:55,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2018-11-22 23:52:55,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-22 23:52:55,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2018-11-22 23:52:55,735 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 20 [2018-11-22 23:52:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:52:55,736 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2018-11-22 23:52:55,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 23:52:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2018-11-22 23:52:55,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-22 23:52:55,737 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:52:55,737 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:52:55,737 INFO L423 AbstractCegarLoop]: === Iteration 4 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:52:55,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:52:55,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1624011416, now seen corresponding path program 1 times [2018-11-22 23:52:55,737 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 23:52:55,738 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/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 [2018-11-22 23:52:55,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:52:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:52:55,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:52:55,877 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:55,878 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 15 treesize of output 27 [2018-11-22 23:52:55,883 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 23 treesize of output 15 [2018-11-22 23:52:55,883 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:55,893 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:55,905 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:55,906 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:29 [2018-11-22 23:52:55,932 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 0 case distinctions, treesize of input 21 treesize of output 20 [2018-11-22 23:52:55,932 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:55,947 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:55,948 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:34 [2018-11-22 23:52:56,011 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:56,088 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:56,355 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:56,376 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:56,543 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:56,562 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:56,641 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:56,654 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:56,701 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2018-11-22 23:52:56,701 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:100, output treesize:48 [2018-11-22 23:52:58,714 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (|v_receive_~#packet~0.base_4| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|v_receive_#t~ret5.base_4| (_ BitVec 32)) (|v_receive_#t~ret5.offset_4| (_ BitVec 32)) (|v_receive_~#packet~0.offset_4| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd |v_receive_~#packet~0.offset_4| (_ bv4 32))) (.cse1 (bvadd |v_receive_~#packet~0.offset_4| (_ bv8 32)))) (and (= (store |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_4| (store (store (store (select |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_4|) |v_receive_~#packet~0.offset_4| v_DerPreprocessor_2) .cse0 v_DerPreprocessor_4) .cse1 |v_receive_#t~ret5.offset_4|)) |c_#memory_$Pointer$.offset|) (= (_ bv0 1) (select |c_old(#valid)| |v_receive_~#packet~0.base_4|)) (= (store |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_4| (store (store (store (select |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_4|) |v_receive_~#packet~0.offset_4| v_DerPreprocessor_6) .cse0 v_DerPreprocessor_8) .cse1 |v_receive_#t~ret5.base_4|)) |c_#memory_$Pointer$.base|)))) is different from true [2018-11-22 23:52:58,740 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:58,749 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:58,755 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:58,756 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 20 treesize of output 13 [2018-11-22 23:52:58,756 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:58,914 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 29 treesize of output 30 [2018-11-22 23:52:58,929 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 18 treesize of output 21 [2018-11-22 23:52:58,943 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:58,948 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 29 [2018-11-22 23:52:58,967 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:58,971 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:58,975 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:58,992 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 23 treesize of output 46 [2018-11-22 23:52:58,993 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:59,035 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:59,068 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:59,110 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:59,218 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 29 treesize of output 30 [2018-11-22 23:52:59,227 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 18 treesize of output 21 [2018-11-22 23:52:59,245 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:59,252 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 29 [2018-11-22 23:52:59,274 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:59,278 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:59,283 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:52:59,297 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 23 treesize of output 46 [2018-11-22 23:52:59,297 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:59,325 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:59,346 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:59,373 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:59,443 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:59,444 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:80, output treesize:15 [2018-11-22 23:52:59,472 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-22 23:52:59,475 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:52:59,475 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:59,478 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:59,485 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-22 23:52:59,487 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:52:59,487 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 23:52:59,488 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:59,491 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:52:59,492 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2018-11-22 23:52:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:52:59,541 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 23:53:00,117 WARN L180 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-11-22 23:53:00,690 WARN L180 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-11-22 23:53:01,744 WARN L180 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 61 [2018-11-22 23:53:02,641 WARN L180 SmtUtils]: Spent 896.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-11-22 23:53:09,696 WARN L180 SmtUtils]: Spent 7.05 s on a formula simplification that was a NOOP. DAG size: 109 [2018-11-22 23:53:09,698 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:09,799 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:09,800 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:09,890 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:09,891 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:09,999 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:10,000 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:10,096 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:16,143 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:16,191 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:16,192 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:16,250 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:16,252 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:16,287 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:19,578 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:19,683 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:19,685 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:19,787 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:19,788 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:19,892 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:22,127 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:22,160 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:22,161 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:22,200 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:22,202 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:22,237 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:24,698 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:24,740 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:24,741 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:24,805 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:24,806 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:24,843 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:26,019 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:26,049 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:26,050 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:26,071 INFO L267 ElimStorePlain]: Start of recursive call 36: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:26,073 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:26,095 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:26,944 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:26,955 INFO L267 ElimStorePlain]: Start of recursive call 40: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:26,956 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:26,974 INFO L267 ElimStorePlain]: Start of recursive call 42: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:26,975 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:26,988 INFO L267 ElimStorePlain]: Start of recursive call 44: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:27,441 INFO L267 ElimStorePlain]: Start of recursive call 47: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:27,454 INFO L267 ElimStorePlain]: Start of recursive call 46: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:27,455 INFO L267 ElimStorePlain]: Start of recursive call 49: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:27,475 INFO L267 ElimStorePlain]: Start of recursive call 48: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:27,475 INFO L267 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:27,487 INFO L267 ElimStorePlain]: Start of recursive call 50: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:27,822 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 8 dim-2 vars, End of recursive call: 16 dim-0 vars, and 5 xjuncts. [2018-11-22 23:53:27,822 INFO L202 ElimStorePlain]: Needed 51 recursive calls to eliminate 14 variables, input treesize:193, output treesize:131 [2018-11-22 23:53:36,639 WARN L180 SmtUtils]: Spent 8.68 s on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2018-11-22 23:53:36,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:53:36,643 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/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 [2018-11-22 23:53:36,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:53:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:53:36,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:53:36,694 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:36,694 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 15 treesize of output 27 [2018-11-22 23:53:36,697 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 23 treesize of output 15 [2018-11-22 23:53:36,697 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:36,702 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:36,711 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:36,711 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:29 [2018-11-22 23:53:36,716 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:36,717 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:36,718 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:36,719 INFO L478 Elim1Store]: Elim1 did not use 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 38 [2018-11-22 23:53:36,719 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:36,737 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:36,737 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:46 [2018-11-22 23:53:36,777 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:36,822 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:37,085 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:37,120 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:37,264 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:37,282 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:37,362 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:37,375 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:37,416 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:37,416 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:100, output treesize:48 [2018-11-22 23:53:39,427 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_DerPreprocessor_60 (_ BitVec 32)) (|v_receive_~#packet~0.base_11| (_ BitVec 32)) (v_DerPreprocessor_64 (_ BitVec 32)) (|v_receive_#t~ret5.base_11| (_ BitVec 32)) (|v_receive_~#packet~0.offset_11| (_ BitVec 32)) (v_DerPreprocessor_62 (_ BitVec 32)) (|v_receive_#t~ret5.offset_11| (_ BitVec 32)) (v_DerPreprocessor_66 (_ BitVec 32))) (let ((.cse0 (bvadd |v_receive_~#packet~0.offset_11| (_ bv4 32))) (.cse1 (bvadd |v_receive_~#packet~0.offset_11| (_ bv8 32)))) (and (= (select |c_old(#valid)| |v_receive_~#packet~0.base_11|) (_ bv0 1)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_11| (store (store (store (select |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_11|) |v_receive_~#packet~0.offset_11| v_DerPreprocessor_66) .cse0 v_DerPreprocessor_60) .cse1 |v_receive_#t~ret5.offset_11|))) (= (store |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_11| (store (store (store (select |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_11|) |v_receive_~#packet~0.offset_11| v_DerPreprocessor_62) .cse0 v_DerPreprocessor_64) .cse1 |v_receive_#t~ret5.base_11|)) |c_#memory_$Pointer$.base|)))) is different from true [2018-11-22 23:53:39,460 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:39,467 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:39,474 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:39,482 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:39,483 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2018-11-22 23:53:39,484 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:39,651 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 29 treesize of output 30 [2018-11-22 23:53:39,661 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 18 treesize of output 21 [2018-11-22 23:53:39,680 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:39,690 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 29 [2018-11-22 23:53:39,703 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:39,706 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:39,710 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:39,727 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 23 treesize of output 46 [2018-11-22 23:53:39,727 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:39,760 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:39,786 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:39,818 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:39,926 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 29 treesize of output 30 [2018-11-22 23:53:39,936 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 18 treesize of output 21 [2018-11-22 23:53:39,950 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:39,959 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 29 [2018-11-22 23:53:39,970 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:39,973 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:39,975 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:53:39,987 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 23 treesize of output 46 [2018-11-22 23:53:39,987 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:40,017 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:40,041 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:40,070 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:40,155 INFO L267 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:40,155 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 13 variables, input treesize:93, output treesize:15 [2018-11-22 23:53:40,158 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-22 23:53:40,160 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:53:40,160 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:40,162 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:40,168 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-22 23:53:40,169 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:53:40,169 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:40,171 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:40,173 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:40,173 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2018-11-22 23:53:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:53:40,175 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 23:53:40,735 WARN L180 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-11-22 23:53:41,096 WARN L180 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-11-22 23:53:41,961 WARN L180 SmtUtils]: Spent 863.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-11-22 23:53:42,627 WARN L180 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-11-22 23:53:45,405 WARN L180 SmtUtils]: Spent 2.77 s on a formula simplification that was a NOOP. DAG size: 107 [2018-11-22 23:53:45,406 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:45,493 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:45,494 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:45,578 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:45,579 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:45,651 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:45,652 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:45,734 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:53,569 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:53,655 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:53,656 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:53,740 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:53,740 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-22 23:53:53,838 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:53:58,947 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:58,987 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:58,988 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:59,040 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:59,041 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:53:59,092 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:01,768 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:01,793 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:01,794 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:01,832 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:01,833 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:01,855 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:05,489 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:05,499 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:05,500 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:05,515 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:05,516 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:05,533 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:07,086 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:07,132 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:07,133 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:07,179 INFO L267 ElimStorePlain]: Start of recursive call 36: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:07,179 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:07,231 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:07,232 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:07,276 INFO L267 ElimStorePlain]: Start of recursive call 40: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:08,434 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:08,465 INFO L267 ElimStorePlain]: Start of recursive call 42: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:08,465 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:08,488 INFO L267 ElimStorePlain]: Start of recursive call 44: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:08,488 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:08,508 INFO L267 ElimStorePlain]: Start of recursive call 46: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:08,509 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:08,533 INFO L267 ElimStorePlain]: Start of recursive call 48: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:09,068 INFO L267 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:09,079 INFO L267 ElimStorePlain]: Start of recursive call 50: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:09,080 INFO L267 ElimStorePlain]: Start of recursive call 53: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:09,094 INFO L267 ElimStorePlain]: Start of recursive call 52: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:09,095 INFO L267 ElimStorePlain]: Start of recursive call 55: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:09,108 INFO L267 ElimStorePlain]: Start of recursive call 54: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:09,109 INFO L267 ElimStorePlain]: Start of recursive call 57: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:09,124 INFO L267 ElimStorePlain]: Start of recursive call 56: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:09,417 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 8 dim-2 vars, End of recursive call: 20 dim-0 vars, and 6 xjuncts. [2018-11-22 23:54:09,417 INFO L202 ElimStorePlain]: Needed 57 recursive calls to eliminate 14 variables, input treesize:193, output treesize:158 [2018-11-22 23:54:12,005 WARN L180 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 44 [2018-11-22 23:54:12,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:54:12,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 12 [2018-11-22 23:54:12,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-22 23:54:12,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-22 23:54:12,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=104, Unknown=3, NotChecked=42, Total=182 [2018-11-22 23:54:12,021 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 12 states. [2018-11-22 23:54:16,565 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((v_DerPreprocessor_60 (_ BitVec 32)) (|v_receive_~#packet~0.base_11| (_ BitVec 32)) (v_DerPreprocessor_64 (_ BitVec 32)) (|v_receive_#t~ret5.base_11| (_ BitVec 32)) (|v_receive_~#packet~0.offset_11| (_ BitVec 32)) (v_DerPreprocessor_62 (_ BitVec 32)) (|v_receive_#t~ret5.offset_11| (_ BitVec 32)) (v_DerPreprocessor_66 (_ BitVec 32))) (let ((.cse0 (bvadd |v_receive_~#packet~0.offset_11| (_ bv4 32))) (.cse1 (bvadd |v_receive_~#packet~0.offset_11| (_ bv8 32)))) (and (= (select |c_old(#valid)| |v_receive_~#packet~0.base_11|) (_ bv0 1)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_11| (store (store (store (select |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_11|) |v_receive_~#packet~0.offset_11| v_DerPreprocessor_66) .cse0 v_DerPreprocessor_60) .cse1 |v_receive_#t~ret5.offset_11|))) (= (store |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_11| (store (store (store (select |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_11|) |v_receive_~#packet~0.offset_11| v_DerPreprocessor_62) .cse0 v_DerPreprocessor_64) .cse1 |v_receive_#t~ret5.base_11|)) |c_#memory_$Pointer$.base|)))) (exists ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (|v_receive_~#packet~0.base_4| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|v_receive_#t~ret5.base_4| (_ BitVec 32)) (|v_receive_#t~ret5.offset_4| (_ BitVec 32)) (|v_receive_~#packet~0.offset_4| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse2 (bvadd |v_receive_~#packet~0.offset_4| (_ bv4 32))) (.cse3 (bvadd |v_receive_~#packet~0.offset_4| (_ bv8 32)))) (and (= (store |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_4| (store (store (store (select |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_4|) |v_receive_~#packet~0.offset_4| v_DerPreprocessor_2) .cse2 v_DerPreprocessor_4) .cse3 |v_receive_#t~ret5.offset_4|)) |c_#memory_$Pointer$.offset|) (= (_ bv0 1) (select |c_old(#valid)| |v_receive_~#packet~0.base_4|)) (= (store |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_4| (store (store (store (select |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_4|) |v_receive_~#packet~0.offset_4| v_DerPreprocessor_6) .cse2 v_DerPreprocessor_8) .cse3 |v_receive_#t~ret5.base_4|)) |c_#memory_$Pointer$.base|))))) is different from true [2018-11-22 23:54:32,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:54:32,631 INFO L93 Difference]: Finished difference Result 90 states and 113 transitions. [2018-11-22 23:54:32,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-22 23:54:32,631 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2018-11-22 23:54:32,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:54:32,632 INFO L225 Difference]: With dead ends: 90 [2018-11-22 23:54:32,632 INFO L226 Difference]: Without dead ends: 70 [2018-11-22 23:54:32,633 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=54, Invalid=194, Unknown=4, NotChecked=90, Total=342 [2018-11-22 23:54:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-22 23:54:32,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2018-11-22 23:54:32,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-22 23:54:32,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2018-11-22 23:54:32,640 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 24 [2018-11-22 23:54:32,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:54:32,640 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2018-11-22 23:54:32,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-22 23:54:32,640 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2018-11-22 23:54:32,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-22 23:54:32,641 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:54:32,641 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:54:32,641 INFO L423 AbstractCegarLoop]: === Iteration 5 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:54:32,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:54:32,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1291150359, now seen corresponding path program 1 times [2018-11-22 23:54:32,641 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 23:54:32,641 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/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 [2018-11-22 23:54:32,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:54:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:54:32,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:54:32,743 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 18 treesize of output 15 [2018-11-22 23:54:32,745 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 15 treesize of output 18 [2018-11-22 23:54:32,749 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 18 treesize of output 7 [2018-11-22 23:54:32,749 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:32,751 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:32,752 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:32,756 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:32,756 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:26, output treesize:15 [2018-11-22 23:54:32,792 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 30 treesize of output 30 [2018-11-22 23:54:32,794 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 26 treesize of output 15 [2018-11-22 23:54:32,795 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:32,815 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 3 [2018-11-22 23:54:32,815 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:32,821 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:32,822 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:32,823 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:30, output treesize:3 [2018-11-22 23:54:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:54:32,834 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 23:54:32,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:54:32,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-22 23:54:32,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-22 23:54:32,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-22 23:54:32,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-22 23:54:32,839 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 8 states. [2018-11-22 23:54:38,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:54:38,555 INFO L93 Difference]: Finished difference Result 119 states and 149 transitions. [2018-11-22 23:54:38,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-22 23:54:38,556 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2018-11-22 23:54:38,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:54:38,556 INFO L225 Difference]: With dead ends: 119 [2018-11-22 23:54:38,557 INFO L226 Difference]: Without dead ends: 75 [2018-11-22 23:54:38,557 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-22 23:54:38,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-11-22 23:54:38,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2018-11-22 23:54:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-11-22 23:54:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2018-11-22 23:54:38,566 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 30 [2018-11-22 23:54:38,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:54:38,567 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2018-11-22 23:54:38,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-22 23:54:38,567 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2018-11-22 23:54:38,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-22 23:54:38,568 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:54:38,568 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:54:38,568 INFO L423 AbstractCegarLoop]: === Iteration 6 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:54:38,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:54:38,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1480779093, now seen corresponding path program 1 times [2018-11-22 23:54:38,569 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 23:54:38,569 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-22 23:54:38,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:54:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:54:38,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:54:38,664 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 9 treesize of output 12 [2018-11-22 23:54:38,667 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-22 23:54:38,667 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:38,672 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:38,679 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:38,679 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:25 [2018-11-22 23:54:38,694 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-11-22 23:54:38,695 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:38,703 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:38,703 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:25 [2018-11-22 23:54:38,755 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:38,846 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:39,082 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:39,112 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:39,228 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:39,241 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:39,321 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:39,332 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:39,372 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:39,372 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:100, output treesize:48 [2018-11-22 23:54:41,381 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_receive_#t~ret5.offset_18| (_ BitVec 32)) (v_DerPreprocessor_124 (_ BitVec 32)) (v_DerPreprocessor_126 (_ BitVec 32)) (v_DerPreprocessor_128 (_ BitVec 32)) (|v_receive_#t~ret5.base_18| (_ BitVec 32)) (|v_receive_~#packet~0.base_19| (_ BitVec 32)) (|v_receive_~#packet~0.offset_19| (_ BitVec 32)) (v_DerPreprocessor_130 (_ BitVec 32))) (let ((.cse0 (bvadd |v_receive_~#packet~0.offset_19| (_ bv4 32))) (.cse1 (bvadd |v_receive_~#packet~0.offset_19| (_ bv8 32)))) (and (= (store |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_19| (store (store (store (select |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_19|) |v_receive_~#packet~0.offset_19| v_DerPreprocessor_124) .cse0 v_DerPreprocessor_126) .cse1 |v_receive_#t~ret5.base_18|)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_19| (store (store (store (select |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_19|) |v_receive_~#packet~0.offset_19| v_DerPreprocessor_128) .cse0 v_DerPreprocessor_130) .cse1 |v_receive_#t~ret5.offset_18|)) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |v_receive_~#packet~0.base_19|) (_ bv0 1))))) is different from true [2018-11-22 23:54:41,397 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:54:41,402 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:54:41,403 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 13 treesize of output 4 [2018-11-22 23:54:41,403 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:41,496 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 29 treesize of output 30 [2018-11-22 23:54:41,502 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 18 treesize of output 21 [2018-11-22 23:54:41,509 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:54:41,515 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 29 [2018-11-22 23:54:41,527 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:54:41,546 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:54:41,549 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:54:41,564 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 23 treesize of output 46 [2018-11-22 23:54:41,564 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:41,593 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:41,613 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:41,640 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:41,705 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 29 treesize of output 30 [2018-11-22 23:54:41,709 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 18 treesize of output 21 [2018-11-22 23:54:41,720 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:54:41,727 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 29 [2018-11-22 23:54:41,737 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:54:41,740 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:54:41,744 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:54:41,756 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 23 treesize of output 46 [2018-11-22 23:54:41,756 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:41,779 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:41,794 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:41,816 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:41,857 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:41,857 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 11 variables, input treesize:69, output treesize:15 [2018-11-22 23:54:43,904 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-22 23:54:43,906 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:54:43,906 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:43,908 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:43,915 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-22 23:54:43,916 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:54:43,916 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 23:54:43,918 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:43,920 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:54:43,920 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2018-11-22 23:54:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:54:43,961 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 23:54:44,349 WARN L180 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-11-22 23:54:44,872 WARN L180 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-11-22 23:54:45,805 WARN L180 SmtUtils]: Spent 931.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-11-22 23:54:46,525 WARN L180 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-11-22 23:54:49,963 WARN L180 SmtUtils]: Spent 3.43 s on a formula simplification that was a NOOP. DAG size: 109 [2018-11-22 23:54:49,965 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:50,053 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:50,054 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:50,130 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:50,130 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:50,203 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:50,204 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:54:50,288 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:00,128 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:00,163 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:00,164 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:00,222 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:00,223 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:00,258 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:00,259 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:00,332 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:05,954 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:06,031 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:06,032 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:06,118 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:06,118 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:06,209 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:08,764 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:08,801 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:08,802 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:08,834 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:08,835 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:08,864 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:10,212 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:10,237 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:10,238 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:10,256 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:10,256 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:10,283 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:11,312 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:11,330 INFO L267 ElimStorePlain]: Start of recursive call 36: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:11,330 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:11,361 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:11,361 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:11,378 INFO L267 ElimStorePlain]: Start of recursive call 40: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:11,378 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:11,411 INFO L267 ElimStorePlain]: Start of recursive call 42: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:12,025 INFO L267 ElimStorePlain]: Start of recursive call 45: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:12,036 INFO L267 ElimStorePlain]: Start of recursive call 44: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:12,036 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:12,045 INFO L267 ElimStorePlain]: Start of recursive call 46: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:12,046 INFO L267 ElimStorePlain]: Start of recursive call 49: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:12,064 INFO L267 ElimStorePlain]: Start of recursive call 48: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:12,523 INFO L267 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:12,532 INFO L267 ElimStorePlain]: Start of recursive call 50: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:12,533 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:12,551 INFO L267 ElimStorePlain]: Start of recursive call 52: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:12,551 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:12,567 INFO L267 ElimStorePlain]: Start of recursive call 54: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:12,567 INFO L267 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:12,578 INFO L267 ElimStorePlain]: Start of recursive call 56: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:12,888 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 8 dim-2 vars, End of recursive call: 20 dim-0 vars, and 6 xjuncts. [2018-11-22 23:55:12,889 INFO L202 ElimStorePlain]: Needed 57 recursive calls to eliminate 14 variables, input treesize:193, output treesize:158 [2018-11-22 23:55:13,201 WARN L180 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 44 [2018-11-22 23:55:13,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:55:13,203 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:55:13,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:55:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:55:13,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:55:13,238 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 9 treesize of output 12 [2018-11-22 23:55:13,242 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-22 23:55:13,242 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:13,248 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:13,258 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:13,258 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:25 [2018-11-22 23:55:13,262 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:55:13,263 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:55:13,263 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 19 treesize of output 23 [2018-11-22 23:55:13,263 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:13,275 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:13,276 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:31 [2018-11-22 23:55:13,312 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:13,379 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:13,654 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:13,679 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:13,805 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:13,820 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:13,895 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:13,909 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:13,949 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:13,949 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:100, output treesize:48 [2018-11-22 23:55:15,964 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_DerPreprocessor_188 (_ BitVec 32)) (|v_receive_~#packet~0.offset_26| (_ BitVec 32)) (|v_receive_#t~ret5.base_25| (_ BitVec 32)) (|v_receive_~#packet~0.base_26| (_ BitVec 32)) (v_DerPreprocessor_190 (_ BitVec 32)) (v_DerPreprocessor_192 (_ BitVec 32)) (|v_receive_#t~ret5.offset_25| (_ BitVec 32)) (v_DerPreprocessor_194 (_ BitVec 32))) (let ((.cse0 (bvadd |v_receive_~#packet~0.offset_26| (_ bv4 32))) (.cse1 (bvadd |v_receive_~#packet~0.offset_26| (_ bv8 32)))) (and (= (select |c_old(#valid)| |v_receive_~#packet~0.base_26|) (_ bv0 1)) (= (store |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_26| (store (store (store (select |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_26|) |v_receive_~#packet~0.offset_26| v_DerPreprocessor_188) .cse0 v_DerPreprocessor_190) .cse1 |v_receive_#t~ret5.offset_25|)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_26| (store (store (store (select |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_26|) |v_receive_~#packet~0.offset_26| v_DerPreprocessor_192) .cse0 v_DerPreprocessor_194) .cse1 |v_receive_#t~ret5.base_25|)))))) is different from true [2018-11-22 23:55:15,985 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:55:15,991 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:55:15,998 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:55:15,999 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 18 treesize of output 13 [2018-11-22 23:55:16,000 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:16,149 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 29 treesize of output 30 [2018-11-22 23:55:16,161 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 18 treesize of output 21 [2018-11-22 23:55:16,175 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:55:16,181 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 29 [2018-11-22 23:55:16,195 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:55:16,198 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:55:16,201 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:55:16,218 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 23 treesize of output 46 [2018-11-22 23:55:16,218 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:16,255 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:16,282 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:16,320 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:16,429 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 29 treesize of output 30 [2018-11-22 23:55:16,444 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 18 treesize of output 21 [2018-11-22 23:55:16,460 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:55:16,465 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 29 [2018-11-22 23:55:16,483 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:55:16,486 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:55:16,489 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:55:16,506 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 23 treesize of output 46 [2018-11-22 23:55:16,506 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:16,548 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:16,577 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:16,610 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:16,684 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:16,684 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:78, output treesize:15 [2018-11-22 23:55:18,725 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-22 23:55:18,731 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:55:18,732 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:18,734 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:18,741 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-22 23:55:18,743 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:55:18,743 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:18,744 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:18,747 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:18,748 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2018-11-22 23:55:18,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:55:18,751 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 23:55:19,467 WARN L180 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-11-22 23:55:19,957 WARN L180 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-11-22 23:55:20,909 WARN L180 SmtUtils]: Spent 951.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-11-22 23:55:21,616 WARN L180 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-11-22 23:55:25,447 WARN L180 SmtUtils]: Spent 3.83 s on a formula simplification that was a NOOP. DAG size: 108 [2018-11-22 23:55:25,448 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:25,540 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:25,540 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:25,621 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:25,621 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:25,702 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:25,702 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:25,792 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:30,279 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:30,361 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:30,361 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:30,436 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:30,436 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:30,511 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:34,515 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:34,549 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:34,550 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:34,580 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:34,580 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:34,634 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:34,634 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:34,688 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:37,417 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:37,439 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:37,440 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:37,475 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:37,476 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:37,498 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:37,498 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:37,536 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:39,729 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:39,757 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:39,757 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:39,792 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:39,793 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:39,829 INFO L267 ElimStorePlain]: Start of recursive call 36: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:41,603 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:41,618 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:41,618 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:41,634 INFO L267 ElimStorePlain]: Start of recursive call 40: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:41,635 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:41,645 INFO L267 ElimStorePlain]: Start of recursive call 42: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:41,645 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:41,654 INFO L267 ElimStorePlain]: Start of recursive call 44: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:42,118 INFO L267 ElimStorePlain]: Start of recursive call 47: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:42,140 INFO L267 ElimStorePlain]: Start of recursive call 46: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:42,141 INFO L267 ElimStorePlain]: Start of recursive call 49: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:42,162 INFO L267 ElimStorePlain]: Start of recursive call 48: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:42,163 INFO L267 ElimStorePlain]: Start of recursive call 51: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:42,180 INFO L267 ElimStorePlain]: Start of recursive call 50: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:42,694 INFO L267 ElimStorePlain]: Start of recursive call 53: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:42,713 INFO L267 ElimStorePlain]: Start of recursive call 52: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:42,713 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2018-11-22 23:55:42,722 INFO L267 ElimStorePlain]: Start of recursive call 54: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:55:42,723 INFO L267 ElimStorePlain]: Start of recursive call 57: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:42,734 INFO L267 ElimStorePlain]: Start of recursive call 56: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:55:43,082 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 8 dim-2 vars, End of recursive call: 20 dim-0 vars, and 6 xjuncts. [2018-11-22 23:55:43,083 INFO L202 ElimStorePlain]: Needed 57 recursive calls to eliminate 14 variables, input treesize:193, output treesize:158 [2018-11-22 23:55:43,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:55:43,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 13 [2018-11-22 23:55:43,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-22 23:55:43,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-22 23:55:43,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=104, Unknown=3, NotChecked=42, Total=182 [2018-11-22 23:55:43,332 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand 13 states. [2018-11-22 23:55:56,003 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((v_DerPreprocessor_188 (_ BitVec 32)) (|v_receive_~#packet~0.offset_26| (_ BitVec 32)) (|v_receive_#t~ret5.base_25| (_ BitVec 32)) (|v_receive_~#packet~0.base_26| (_ BitVec 32)) (v_DerPreprocessor_190 (_ BitVec 32)) (v_DerPreprocessor_192 (_ BitVec 32)) (|v_receive_#t~ret5.offset_25| (_ BitVec 32)) (v_DerPreprocessor_194 (_ BitVec 32))) (let ((.cse0 (bvadd |v_receive_~#packet~0.offset_26| (_ bv4 32))) (.cse1 (bvadd |v_receive_~#packet~0.offset_26| (_ bv8 32)))) (and (= (select |c_old(#valid)| |v_receive_~#packet~0.base_26|) (_ bv0 1)) (= (store |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_26| (store (store (store (select |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_26|) |v_receive_~#packet~0.offset_26| v_DerPreprocessor_188) .cse0 v_DerPreprocessor_190) .cse1 |v_receive_#t~ret5.offset_25|)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_26| (store (store (store (select |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_26|) |v_receive_~#packet~0.offset_26| v_DerPreprocessor_192) .cse0 v_DerPreprocessor_194) .cse1 |v_receive_#t~ret5.base_25|)))))) (exists ((|v_receive_#t~ret5.offset_18| (_ BitVec 32)) (v_DerPreprocessor_124 (_ BitVec 32)) (v_DerPreprocessor_126 (_ BitVec 32)) (v_DerPreprocessor_128 (_ BitVec 32)) (|v_receive_#t~ret5.base_18| (_ BitVec 32)) (|v_receive_~#packet~0.base_19| (_ BitVec 32)) (|v_receive_~#packet~0.offset_19| (_ BitVec 32)) (v_DerPreprocessor_130 (_ BitVec 32))) (let ((.cse2 (bvadd |v_receive_~#packet~0.offset_19| (_ bv4 32))) (.cse3 (bvadd |v_receive_~#packet~0.offset_19| (_ bv8 32)))) (and (= (store |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_19| (store (store (store (select |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_19|) |v_receive_~#packet~0.offset_19| v_DerPreprocessor_124) .cse2 v_DerPreprocessor_126) .cse3 |v_receive_#t~ret5.base_18|)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_19| (store (store (store (select |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_19|) |v_receive_~#packet~0.offset_19| v_DerPreprocessor_128) .cse2 v_DerPreprocessor_130) .cse3 |v_receive_#t~ret5.offset_18|)) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |v_receive_~#packet~0.base_19|) (_ bv0 1)))))) is different from true [2018-11-22 23:56:00,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:56:00,476 INFO L93 Difference]: Finished difference Result 90 states and 114 transitions. [2018-11-22 23:56:00,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-22 23:56:00,477 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2018-11-22 23:56:00,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:56:00,477 INFO L225 Difference]: With dead ends: 90 [2018-11-22 23:56:00,477 INFO L226 Difference]: Without dead ends: 73 [2018-11-22 23:56:00,478 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 77 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=58, Invalid=190, Unknown=4, NotChecked=90, Total=342 [2018-11-22 23:56:00,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-11-22 23:56:00,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2018-11-22 23:56:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-22 23:56:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2018-11-22 23:56:00,484 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 30 [2018-11-22 23:56:00,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:56:00,484 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2018-11-22 23:56:00,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-22 23:56:00,485 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2018-11-22 23:56:00,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-22 23:56:00,485 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:56:00,485 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:56:00,485 INFO L423 AbstractCegarLoop]: === Iteration 7 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:56:00,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:56:00,485 INFO L82 PathProgramCache]: Analyzing trace with hash -868448533, now seen corresponding path program 1 times [2018-11-22 23:56:00,486 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 23:56:00,486 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/cvc4nyu Starting monitored process 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-22 23:56:00,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:56:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:56:00,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:56:00,632 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 21 treesize of output 17 [2018-11-22 23:56:00,635 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 17 treesize of output 5 [2018-11-22 23:56:00,635 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:56:00,637 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:56:00,640 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:56:00,641 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:9 [2018-11-22 23:56:32,737 WARN L180 SmtUtils]: Spent 32.08 s on a formula simplification. DAG size of input: 118 DAG size of output: 93 [2018-11-22 23:56:33,573 INFO L303 Elim1Store]: Index analysis took 835 ms [2018-11-22 23:56:33,573 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 21 treesize of output 18 [2018-11-22 23:56:34,209 INFO L303 Elim1Store]: Index analysis took 635 ms [2018-11-22 23:56:34,210 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 18 treesize of output 21 [2018-11-22 23:56:35,357 INFO L303 Elim1Store]: Index analysis took 1146 ms [2018-11-22 23:56:35,358 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2018-11-22 23:56:37,934 INFO L303 Elim1Store]: Index analysis took 2575 ms [2018-11-22 23:56:37,935 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 23 treesize of output 15 [2018-11-22 23:56:37,935 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 23:56:40,029 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:56:43,095 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:56:44,372 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:56:57,267 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:56:57,848 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:57:07,877 INFO L303 Elim1Store]: Index analysis took 2079 ms [2018-11-22 23:57:07,995 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 53 [2018-11-22 23:57:08,054 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 48 treesize of output 50 [2018-11-22 23:57:08,718 INFO L303 Elim1Store]: Index analysis took 663 ms [2018-11-22 23:57:08,719 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2018-11-22 23:57:09,886 INFO L303 Elim1Store]: Index analysis took 1166 ms [2018-11-22 23:57:09,886 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2018-11-22 23:57:10,773 INFO L303 Elim1Store]: Index analysis took 886 ms [2018-11-22 23:57:10,774 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2018-11-22 23:57:10,774 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-22 23:57:11,256 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:57:12,110 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:57:13,871 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:57:16,652 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:57:24,352 INFO L303 Elim1Store]: Index analysis took 1787 ms [2018-11-22 23:57:24,440 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 59 treesize of output 76 [2018-11-22 23:57:24,685 INFO L303 Elim1Store]: Index analysis took 241 ms [2018-11-22 23:57:24,710 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 55 treesize of output 59 [2018-11-22 23:57:24,711 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 4 xjuncts. [2018-11-22 23:57:35,295 INFO L303 Elim1Store]: Index analysis took 182 ms [2018-11-22 23:57:35,331 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 63 [2018-11-22 23:57:35,332 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 8 xjuncts. [2018-11-22 23:57:46,635 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 56 treesize of output 44 [2018-11-22 23:57:46,635 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-22 23:57:54,626 INFO L303 Elim1Store]: Index analysis took 179 ms [2018-11-22 23:57:54,657 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 40 [2018-11-22 23:57:54,658 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 8 xjuncts. [2018-11-22 23:58:03,394 INFO L267 ElimStorePlain]: Start of recursive call 13: 4 dim-1 vars, End of recursive call: and 9 xjuncts. [2018-11-22 23:58:11,759 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2018-11-22 23:58:11,823 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 41 treesize of output 47 [2018-11-22 23:58:11,824 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-22 23:58:12,398 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 36 [2018-11-22 23:58:12,398 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:12,423 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 40 treesize of output 37 [2018-11-22 23:58:12,423 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:12,730 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 25 treesize of output 19 [2018-11-22 23:58:12,769 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2018-11-22 23:58:12,881 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 21 treesize of output 41 [2018-11-22 23:58:12,882 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 6 xjuncts. [2018-11-22 23:58:12,974 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 23:58:13,044 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 23:58:13,321 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-22 23:58:13,455 INFO L303 Elim1Store]: Index analysis took 133 ms [2018-11-22 23:58:13,456 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2018-11-22 23:58:13,481 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 15 treesize of output 18 [2018-11-22 23:58:13,521 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 18 treesize of output 19 [2018-11-22 23:58:13,521 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:13,587 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:58:13,899 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 30 treesize of output 29 [2018-11-22 23:58:13,925 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 18 treesize of output 7 [2018-11-22 23:58:13,925 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:13,962 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:58:14,073 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:58:16,354 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2018-11-22 23:58:16,362 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 39 treesize of output 36 [2018-11-22 23:58:16,363 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:16,435 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 29 treesize of output 26 [2018-11-22 23:58:16,436 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:16,478 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 25 treesize of output 19 [2018-11-22 23:58:16,519 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2018-11-22 23:58:16,570 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 21 treesize of output 41 [2018-11-22 23:58:16,571 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 6 xjuncts. [2018-11-22 23:58:16,633 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 23:58:16,673 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 23:58:16,731 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-22 23:58:16,780 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2018-11-22 23:58:16,785 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 15 treesize of output 18 [2018-11-22 23:58:16,799 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 18 treesize of output 19 [2018-11-22 23:58:16,799 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:16,813 INFO L267 ElimStorePlain]: Start of recursive call 37: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:58:16,864 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 30 treesize of output 29 [2018-11-22 23:58:16,872 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2018-11-22 23:58:16,873 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:16,887 INFO L267 ElimStorePlain]: Start of recursive call 39: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:58:16,904 INFO L267 ElimStorePlain]: Start of recursive call 36: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:58:17,275 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 6 dim-2 vars, End of recursive call: 8 dim-0 vars, and 18 xjuncts. [2018-11-22 23:58:17,275 INFO L202 ElimStorePlain]: Needed 40 recursive calls to eliminate 11 variables, input treesize:195, output treesize:750 [2018-11-22 23:58:17,456 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-22 23:58:17,458 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:58:17,458 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:17,468 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:58:17,486 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 38 treesize of output 32 [2018-11-22 23:58:17,488 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 32 treesize of output 23 [2018-11-22 23:58:17,488 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:17,493 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:58:17,500 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:58:17,501 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:59, output treesize:33 [2018-11-22 23:58:17,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:58:17,573 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 23:58:17,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:58:17,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-22 23:58:17,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-22 23:58:17,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-22 23:58:17,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-11-22 23:58:17,576 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand 11 states. [2018-11-22 23:58:27,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:58:27,470 INFO L93 Difference]: Finished difference Result 109 states and 134 transitions. [2018-11-22 23:58:27,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-22 23:58:27,471 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2018-11-22 23:58:27,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:58:27,472 INFO L225 Difference]: With dead ends: 109 [2018-11-22 23:58:27,473 INFO L226 Difference]: Without dead ends: 89 [2018-11-22 23:58:27,473 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2018-11-22 23:58:27,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-22 23:58:27,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2018-11-22 23:58:27,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-22 23:58:27,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2018-11-22 23:58:27,483 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 30 [2018-11-22 23:58:27,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:58:27,483 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2018-11-22 23:58:27,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-22 23:58:27,484 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2018-11-22 23:58:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-22 23:58:27,484 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:58:27,484 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:58:27,485 INFO L423 AbstractCegarLoop]: === Iteration 8 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:58:27,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:58:27,485 INFO L82 PathProgramCache]: Analyzing trace with hash -125338167, now seen corresponding path program 1 times [2018-11-22 23:58:27,485 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 23:58:27,485 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7b71216-1767-4a36-bb70-83617c58b541/bin-2019/uautomizer/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-22 23:58:27,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:58:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:58:27,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:58:27,647 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:58:27,647 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 15 treesize of output 27 [2018-11-22 23:58:27,649 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 23 treesize of output 15 [2018-11-22 23:58:27,650 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:27,656 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:58:27,662 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:58:27,662 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:18 [2018-11-22 23:58:27,673 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:58:27,675 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:58:27,675 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:58:27,676 INFO L478 Elim1Store]: Elim1 did not use 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 38 [2018-11-22 23:58:27,676 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:27,697 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:58:27,697 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:35 [2018-11-22 23:58:27,850 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:58:27,852 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:58:27,854 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:58:27,857 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:58:27,857 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 53 [2018-11-22 23:58:27,858 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:27,888 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-22 23:58:27,889 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:46 [2018-11-22 23:58:28,015 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:58:28,018 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 26 treesize of output 22 [2018-11-22 23:58:28,024 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 18 treesize of output 11 [2018-11-22 23:58:28,024 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:28,036 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-22 23:58:28,037 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:28,040 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:58:28,060 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-22 23:58:28,061 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:66, output treesize:44 [2018-11-22 23:58:53,701 WARN L180 SmtUtils]: Spent 25.60 s on a formula simplification. DAG size of input: 124 DAG size of output: 99 [2018-11-22 23:58:54,308 INFO L303 Elim1Store]: Index analysis took 606 ms [2018-11-22 23:58:54,308 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 21 treesize of output 18 [2018-11-22 23:58:54,408 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 18 treesize of output 21 [2018-11-22 23:58:54,750 INFO L303 Elim1Store]: Index analysis took 341 ms [2018-11-22 23:58:54,750 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2018-11-22 23:58:55,526 INFO L303 Elim1Store]: Index analysis took 774 ms [2018-11-22 23:58:55,526 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 23 treesize of output 15 [2018-11-22 23:58:55,526 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 23:58:56,131 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:58:57,419 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:58:58,011 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:59:05,460 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:59:05,779 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:59:09,933 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:59:10,639 INFO L303 Elim1Store]: Index analysis took 875 ms [2018-11-22 23:59:10,639 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 47 treesize of output 48 [2018-11-22 23:59:10,691 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 29 treesize of output 32 [2018-11-22 23:59:11,057 INFO L303 Elim1Store]: Index analysis took 364 ms [2018-11-22 23:59:11,057 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2018-11-22 23:59:11,870 INFO L303 Elim1Store]: Index analysis took 811 ms [2018-11-22 23:59:11,870 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2018-11-22 23:59:13,411 INFO L303 Elim1Store]: Index analysis took 1539 ms [2018-11-22 23:59:13,411 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2018-11-22 23:59:13,411 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-22 23:59:14,040 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:59:14,554 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:59:15,280 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:59:16,711 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:59:21,513 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:59:23,167 INFO L303 Elim1Store]: Index analysis took 2084 ms [2018-11-22 23:59:23,241 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 6 case distinctions, treesize of input 59 treesize of output 80 [2018-11-22 23:59:23,468 INFO L303 Elim1Store]: Index analysis took 224 ms [2018-11-22 23:59:23,494 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 59 treesize of output 63 [2018-11-22 23:59:23,494 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 4 xjuncts. [2018-11-22 23:59:30,453 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 56 treesize of output 44 [2018-11-22 23:59:30,453 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-22 23:59:38,187 INFO L303 Elim1Store]: Index analysis took 183 ms [2018-11-22 23:59:38,221 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 59 [2018-11-22 23:59:38,222 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 8 xjuncts. [2018-11-22 23:59:42,723 INFO L267 ElimStorePlain]: Start of recursive call 13: 4 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-11-22 23:59:48,353 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2018-11-22 23:59:48,425 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 41 treesize of output 47 [2018-11-22 23:59:48,426 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-22 23:59:49,047 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 30 [2018-11-22 23:59:49,096 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2018-11-22 23:59:49,097 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-22 23:59:49,154 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 23:59:49,162 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 39 treesize of output 31 [2018-11-22 23:59:49,201 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2018-11-22 23:59:49,211 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:59:49,225 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2018-11-22 23:59:49,438 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-22 23:59:49,438 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimArr_46 input size 11 context size 11 output size 11 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) 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.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) [2018-11-22 23:59:49,441 INFO L168 Benchmark]: Toolchain (without parser) took 427897.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.3 MB). Free memory was 938.5 MB in the beginning and 1.1 GB in the end (delta: -112.2 MB). Peak memory consumption was 299.6 MB. Max. memory is 11.5 GB. [2018-11-22 23:59:49,442 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-11-22 23:59:49,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 938.5 MB in the beginning and 1.2 GB in the end (delta: -220.6 MB). Peak memory consumption was 40.1 MB. Max. memory is 11.5 GB. [2018-11-22 23:59:49,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2018-11-22 23:59:49,442 INFO L168 Benchmark]: Boogie Preprocessor took 42.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2018-11-22 23:59:49,442 INFO L168 Benchmark]: RCFGBuilder took 2429.20 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: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. [2018-11-22 23:59:49,443 INFO L168 Benchmark]: TraceAbstraction took 424873.24 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 23.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 63.5 MB). Peak memory consumption was 309.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:59:49,444 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 517.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 938.5 MB in the beginning and 1.2 GB in the end (delta: -220.6 MB). Peak memory consumption was 40.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2429.20 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: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 424873.24 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 23.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 63.5 MB). Peak memory consumption was 309.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_46 input size 11 context size 11 output size 11 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_46 input size 11 context size 11 output size 11: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...