./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-simple/sll2c_prepend_equal_true-unreach-call_true-valid-memsafety.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_prepend_equal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash debc7603f8b66e45e837485abad9ef70b7e9b8f4 ................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_prepend_equal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash debc7603f8b66e45e837485abad9ef70b7e9b8f4 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_33 term size 22 --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:36:01,125 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:36:01,127 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:36:01,140 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:36:01,140 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:36:01,141 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:36:01,142 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:36:01,144 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:36:01,145 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:36:01,148 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:36:01,149 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:36:01,149 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:36:01,150 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:36:01,151 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:36:01,151 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:36:01,152 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:36:01,153 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:36:01,156 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:36:01,158 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:36:01,159 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:36:01,160 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:36:01,161 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:36:01,170 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:36:01,171 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:36:01,171 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:36:01,171 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:36:01,172 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:36:01,173 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:36:01,174 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:36:01,175 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:36:01,176 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:36:01,176 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:36:01,176 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:36:01,176 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:36:01,179 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:36:01,179 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:36:01,180 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 21:36:01,196 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:36:01,196 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:36:01,196 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:36:01,197 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 21:36:01,197 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 21:36:01,197 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 21:36:01,197 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 21:36:01,197 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 21:36:01,197 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 21:36:01,197 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 21:36:01,198 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 21:36:01,198 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:36:01,198 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:36:01,198 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:36:01,198 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:36:01,199 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:36:01,199 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:36:01,199 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:36:01,199 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:36:01,199 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:36:01,199 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:36:01,199 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:36:01,200 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:36:01,200 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:36:01,200 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:36:01,200 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:36:01,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:36:01,200 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:36:01,200 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:36:01,201 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:36:01,201 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 21:36:01,201 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:36:01,202 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:36:01,202 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:36:01,202 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debc7603f8b66e45e837485abad9ef70b7e9b8f4 [2018-10-26 21:36:01,245 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:36:01,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:36:01,257 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:36:01,259 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:36:01,259 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:36:01,259 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/../../sv-benchmarks/c/list-simple/sll2c_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-10-26 21:36:01,313 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/data/fb902cc9e/9b89f0b9efee4994807a50d44fe0a46a/FLAG3063a3d4e [2018-10-26 21:36:01,777 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:36:01,778 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/sv-benchmarks/c/list-simple/sll2c_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-10-26 21:36:01,791 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/data/fb902cc9e/9b89f0b9efee4994807a50d44fe0a46a/FLAG3063a3d4e [2018-10-26 21:36:01,803 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/data/fb902cc9e/9b89f0b9efee4994807a50d44fe0a46a [2018-10-26 21:36:01,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:36:01,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 21:36:01,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:36:01,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:36:01,813 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:36:01,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:36:01" (1/1) ... [2018-10-26 21:36:01,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c00c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:01, skipping insertion in model container [2018-10-26 21:36:01,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:36:01" (1/1) ... [2018-10-26 21:36:01,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:36:01,876 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:36:02,188 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:36:02,200 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:36:02,254 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:36:02,295 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:36:02,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:02 WrapperNode [2018-10-26 21:36:02,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:36:02,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:36:02,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:36:02,297 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:36:02,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:02" (1/1) ... [2018-10-26 21:36:02,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:02" (1/1) ... [2018-10-26 21:36:02,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:36:02,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:36:02,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:36:02,416 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:36:02,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:02" (1/1) ... [2018-10-26 21:36:02,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:02" (1/1) ... [2018-10-26 21:36:02,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:02" (1/1) ... [2018-10-26 21:36:02,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:02" (1/1) ... [2018-10-26 21:36:02,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:02" (1/1) ... [2018-10-26 21:36:02,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:02" (1/1) ... [2018-10-26 21:36:02,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:02" (1/1) ... [2018-10-26 21:36:02,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:36:02,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:36:02,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:36:02,454 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:36:02,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:36:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:36:02,536 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-10-26 21:36:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-10-26 21:36:02,536 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-10-26 21:36:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:36:02,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:36:02,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:36:02,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:36:02,537 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2018-10-26 21:36:02,538 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2018-10-26 21:36:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2018-10-26 21:36:02,538 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2018-10-26 21:36:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_prepend [2018-10-26 21:36:02,538 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_prepend [2018-10-26 21:36:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:36:02,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:36:03,329 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:36:03,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:36:03 BoogieIcfgContainer [2018-10-26 21:36:03,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:36:03,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:36:03,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:36:03,341 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:36:03,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:36:01" (1/3) ... [2018-10-26 21:36:03,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3244d318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:36:03, skipping insertion in model container [2018-10-26 21:36:03,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:02" (2/3) ... [2018-10-26 21:36:03,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3244d318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:36:03, skipping insertion in model container [2018-10-26 21:36:03,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:36:03" (3/3) ... [2018-10-26 21:36:03,345 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-10-26 21:36:03,357 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:36:03,369 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:36:03,387 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:36:03,431 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:36:03,431 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:36:03,431 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:36:03,432 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:36:03,432 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:36:03,434 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:36:03,434 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:36:03,434 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:36:03,459 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-10-26 21:36:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-26 21:36:03,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:36:03,469 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:36:03,472 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:36:03,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:36:03,485 INFO L82 PathProgramCache]: Analyzing trace with hash -32194737, now seen corresponding path program 1 times [2018-10-26 21:36:03,487 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:36:03,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:36:03,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:03,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:36:03,541 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:36:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 21:36:03,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:36:03,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 21:36:03,715 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 21:36:03,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 21:36:03,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 21:36:03,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:36:03,738 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-10-26 21:36:03,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:36:03,766 INFO L93 Difference]: Finished difference Result 102 states and 126 transitions. [2018-10-26 21:36:03,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 21:36:03,767 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-10-26 21:36:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:36:03,777 INFO L225 Difference]: With dead ends: 102 [2018-10-26 21:36:03,778 INFO L226 Difference]: Without dead ends: 42 [2018-10-26 21:36:03,781 INFO L605 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 [2018-10-26 21:36:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-26 21:36:03,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-26 21:36:03,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-26 21:36:03,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2018-10-26 21:36:03,832 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 36 [2018-10-26 21:36:03,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:36:03,835 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2018-10-26 21:36:03,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 21:36:03,835 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2018-10-26 21:36:03,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-26 21:36:03,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:36:03,837 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:36:03,838 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:36:03,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:36:03,838 INFO L82 PathProgramCache]: Analyzing trace with hash 451533931, now seen corresponding path program 1 times [2018-10-26 21:36:03,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:36:03,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:36:03,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:03,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:36:03,841 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:36:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 21:36:04,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:36:04,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:36:04,046 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 21:36:04,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:36:04,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:36:04,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:36:04,048 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 5 states. [2018-10-26 21:36:04,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:36:04,299 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2018-10-26 21:36:04,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:36:04,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-10-26 21:36:04,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:36:04,300 INFO L225 Difference]: With dead ends: 74 [2018-10-26 21:36:04,300 INFO L226 Difference]: Without dead ends: 46 [2018-10-26 21:36:04,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:36:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-26 21:36:04,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2018-10-26 21:36:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-26 21:36:04,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2018-10-26 21:36:04,311 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 37 [2018-10-26 21:36:04,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:36:04,311 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2018-10-26 21:36:04,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:36:04,311 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2018-10-26 21:36:04,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-26 21:36:04,312 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:36:04,313 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:36:04,313 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:36:04,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:36:04,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1874860434, now seen corresponding path program 1 times [2018-10-26 21:36:04,314 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:36:04,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:36:04,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:04,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:36:04,316 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:36:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:05,107 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-26 21:36:05,569 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-26 21:36:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 21:36:06,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:36:06,193 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 21:36:06,194 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 47 with the following transitions: [2018-10-26 21:36:06,196 INFO L202 CegarAbsIntRunner]: [4], [5], [6], [8], [11], [30], [31], [33], [37], [41], [43], [45], [49], [50], [54], [56], [58], [62], [65], [85], [110], [116], [118], [119], [120], [121], [122], [123], [124], [125], [126], [127], [128], [130], [131], [132], [133] [2018-10-26 21:36:06,251 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 21:36:06,251 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 21:36:06,820 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-26 21:36:06,821 INFO L272 AbstractInterpreter]: Visited 37 different actions 48 times. Merged at 2 different actions 2 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 48 variables. [2018-10-26 21:36:06,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:36:06,865 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-26 21:36:06,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:36:06,866 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:36:06,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:06,876 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-26 21:36:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:07,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:36:07,082 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 21:36:07,084 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:07,097 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:07,098 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-10-26 21:36:07,808 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:36:07,809 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:36:07,810 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:36:07,811 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 42 [2018-10-26 21:36:07,822 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2018-10-26 21:36:07,823 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:07,836 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:07,848 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. [2018-10-26 21:36:07,848 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:32 [2018-10-26 21:36:07,979 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 21:36:08,006 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:36:08,006 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:08,015 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:08,025 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 21:36:08,026 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:48 [2018-10-26 21:36:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 21:36:08,371 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 21:36:11,128 WARN L832 $PredicateComparison]: unable to prove that (forall ((|v_node_create_write~$Pointer$_#value.base_11| Int) (v_sll_circular_prepend_~head.base_BEFORE_CALL_2 Int) (v_sll_circular_prepend_~head.offset_BEFORE_CALL_2 Int) (|v_node_create_write~$Pointer$_#ptr.offset_11| Int)) (or (not (= (select (select (store |c_#memory_$Pointer$.base| c_node_create_~temp~0.base (store (select |c_#memory_$Pointer$.base| c_node_create_~temp~0.base) |v_node_create_write~$Pointer$_#ptr.offset_11| |v_node_create_write~$Pointer$_#value.base_11|)) v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2) 0)) (exists ((|v_node_create_write~$Pointer$_#ptr.offset_10| Int) (|v_node_create_write~$Pointer$_#value.base_10| Int) (v_node_create_~temp~0.base_11 Int)) (and (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11 (store (select |c_old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11) |v_node_create_write~$Pointer$_#ptr.offset_10| |v_node_create_write~$Pointer$_#value.base_10|)) v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2)) (= (select |c_old(#valid)| v_node_create_~temp~0.base_11) 0))))) is different from false [2018-10-26 21:36:15,444 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2018-10-26 21:36:15,462 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 21:36:15,462 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:15,478 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-10-26 21:36:15,484 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-10-26 21:36:15,485 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:15,496 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:15,498 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-10-26 21:36:15,501 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-10-26 21:36:15,501 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:15,535 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:15,537 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2018-10-26 21:36:15,539 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 21:36:15,539 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:15,544 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:15,561 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 21:36:15,578 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-10-26 21:36:15,578 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:39, output treesize:32 [2018-10-26 21:36:15,977 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-26 21:36:18,189 WARN L179 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 50 [2018-10-26 21:36:18,194 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-26 21:36:18,200 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-26 21:36:20,458 WARN L179 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 50 [2018-10-26 21:36:20,463 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-26 21:36:20,470 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-26 21:36:20,478 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-26 21:36:22,695 WARN L179 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 50 [2018-10-26 21:36:22,905 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 32 [2018-10-26 21:36:23,174 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5445 conjuctions. This might take some time... [2018-10-26 21:36:23,220 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 12 conjuctions. [2018-10-26 21:36:23,224 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-26 21:36:23,514 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:36:23,515 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 19381 column 11: unknown constant v_prenex_11 at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:221) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:114) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.assertTerm(ManagedScript.java:136) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:120) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.checkEqualityStatus(Elim1Store.java:667) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.analyzeIndexEqualities(Elim1Store.java:759) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:300) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:216) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-26 21:36:23,521 INFO L168 Benchmark]: Toolchain (without parser) took 21713.55 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 292.6 MB). Free memory was 958.0 MB in the beginning and 1.2 GB in the end (delta: -213.6 MB). Peak memory consumption was 364.6 MB. Max. memory is 11.5 GB. [2018-10-26 21:36:23,521 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:36:23,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 487.53 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 931.1 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2018-10-26 21:36:23,522 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 931.1 MB in the beginning and 1.2 GB in the end (delta: -236.5 MB). Peak memory consumption was 16.3 MB. Max. memory is 11.5 GB. [2018-10-26 21:36:23,522 INFO L168 Benchmark]: Boogie Preprocessor took 38.01 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:36:23,523 INFO L168 Benchmark]: RCFGBuilder took 876.03 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: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 11.5 GB. [2018-10-26 21:36:23,523 INFO L168 Benchmark]: TraceAbstraction took 20182.51 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 122.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -46.7 MB). Peak memory consumption was 361.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:36:23,528 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 487.53 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 931.1 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 118.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 931.1 MB in the beginning and 1.2 GB in the end (delta: -236.5 MB). Peak memory consumption was 16.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 876.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 20182.51 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 122.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -46.7 MB). Peak memory consumption was 361.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 19381 column 11: unknown constant v_prenex_11 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 19381 column 11: unknown constant v_prenex_11: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:36:25,396 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:36:25,399 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:36:25,412 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:36:25,413 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:36:25,414 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:36:25,417 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:36:25,419 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:36:25,421 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:36:25,425 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:36:25,428 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:36:25,428 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:36:25,429 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:36:25,430 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:36:25,430 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:36:25,431 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:36:25,432 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:36:25,444 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:36:25,446 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:36:25,447 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:36:25,448 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:36:25,453 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:36:25,455 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:36:25,455 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:36:25,456 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:36:25,456 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:36:25,461 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:36:25,462 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:36:25,463 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:36:25,464 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:36:25,464 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:36:25,465 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:36:25,465 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:36:25,465 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:36:25,468 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:36:25,468 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:36:25,469 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 21:36:25,487 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:36:25,487 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:36:25,488 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:36:25,488 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 21:36:25,488 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 21:36:25,488 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 21:36:25,488 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 21:36:25,488 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 21:36:25,489 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:36:25,490 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:36:25,490 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:36:25,490 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:36:25,490 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:36:25,491 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:36:25,491 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:36:25,491 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 21:36:25,492 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 21:36:25,492 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:36:25,492 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:36:25,492 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:36:25,492 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:36:25,492 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:36:25,492 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:36:25,493 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:36:25,493 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:36:25,493 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:36:25,493 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:36:25,493 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:36:25,493 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 21:36:25,494 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:36:25,494 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 21:36:25,494 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 21:36:25,494 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_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debc7603f8b66e45e837485abad9ef70b7e9b8f4 [2018-10-26 21:36:25,545 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:36:25,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:36:25,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:36:25,561 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:36:25,562 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:36:25,562 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/../../sv-benchmarks/c/list-simple/sll2c_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-10-26 21:36:25,615 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/data/3c1769628/1752de58594e4a6ebec3069efa5e2729/FLAGa0d1fa5ac [2018-10-26 21:36:26,088 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:36:26,088 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/sv-benchmarks/c/list-simple/sll2c_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-10-26 21:36:26,105 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/data/3c1769628/1752de58594e4a6ebec3069efa5e2729/FLAGa0d1fa5ac [2018-10-26 21:36:26,124 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/data/3c1769628/1752de58594e4a6ebec3069efa5e2729 [2018-10-26 21:36:26,127 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:36:26,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 21:36:26,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:36:26,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:36:26,132 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:36:26,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:36:26" (1/1) ... [2018-10-26 21:36:26,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38443206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:26, skipping insertion in model container [2018-10-26 21:36:26,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:36:26" (1/1) ... [2018-10-26 21:36:26,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:36:26,179 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:36:26,431 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:36:26,442 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:36:26,488 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:36:26,547 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:36:26,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:26 WrapperNode [2018-10-26 21:36:26,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:36:26,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:36:26,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:36:26,549 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:36:26,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:26" (1/1) ... [2018-10-26 21:36:26,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:26" (1/1) ... [2018-10-26 21:36:26,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:36:26,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:36:26,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:36:26,617 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:36:26,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:26" (1/1) ... [2018-10-26 21:36:26,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:26" (1/1) ... [2018-10-26 21:36:26,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:26" (1/1) ... [2018-10-26 21:36:26,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:26" (1/1) ... [2018-10-26 21:36:26,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:26" (1/1) ... [2018-10-26 21:36:26,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:26" (1/1) ... [2018-10-26 21:36:26,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:26" (1/1) ... [2018-10-26 21:36:26,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:36:26,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:36:26,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:36:26,786 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:36:26,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:36:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:36:26,854 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-10-26 21:36:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-10-26 21:36:26,854 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-10-26 21:36:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:36:26,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:36:26,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:36:26,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:36:26,855 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2018-10-26 21:36:26,855 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2018-10-26 21:36:26,855 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2018-10-26 21:36:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2018-10-26 21:36:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_prepend [2018-10-26 21:36:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_prepend [2018-10-26 21:36:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:36:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:36:27,709 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:36:27,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:36:27 BoogieIcfgContainer [2018-10-26 21:36:27,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:36:27,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:36:27,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:36:27,714 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:36:27,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:36:26" (1/3) ... [2018-10-26 21:36:27,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5523f7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:36:27, skipping insertion in model container [2018-10-26 21:36:27,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:36:26" (2/3) ... [2018-10-26 21:36:27,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5523f7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:36:27, skipping insertion in model container [2018-10-26 21:36:27,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:36:27" (3/3) ... [2018-10-26 21:36:27,721 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-10-26 21:36:27,737 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:36:27,745 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:36:27,766 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:36:27,816 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:36:27,825 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:36:27,825 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:36:27,825 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:36:27,826 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:36:27,826 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:36:27,826 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:36:27,826 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:36:27,826 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:36:27,845 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-10-26 21:36:27,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-26 21:36:27,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:36:27,854 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:36:27,856 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:36:27,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:36:27,866 INFO L82 PathProgramCache]: Analyzing trace with hash -32194737, now seen corresponding path program 1 times [2018-10-26 21:36:27,872 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 21:36:27,872 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 21:36:27,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:28,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:36:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:36:28,105 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:36:28,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:36:28,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 21:36:28,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 21:36:28,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 21:36:28,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:36:28,125 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-10-26 21:36:28,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:36:28,148 INFO L93 Difference]: Finished difference Result 102 states and 126 transitions. [2018-10-26 21:36:28,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 21:36:28,149 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-10-26 21:36:28,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:36:28,158 INFO L225 Difference]: With dead ends: 102 [2018-10-26 21:36:28,158 INFO L226 Difference]: Without dead ends: 42 [2018-10-26 21:36:28,162 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:36:28,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-26 21:36:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-26 21:36:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-26 21:36:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2018-10-26 21:36:28,205 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 36 [2018-10-26 21:36:28,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:36:28,207 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2018-10-26 21:36:28,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 21:36:28,208 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2018-10-26 21:36:28,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-26 21:36:28,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:36:28,211 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:36:28,212 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:36:28,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:36:28,212 INFO L82 PathProgramCache]: Analyzing trace with hash 451533931, now seen corresponding path program 1 times [2018-10-26 21:36:28,214 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 21:36:28,214 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 21:36:28,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:28,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:36:28,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:36:28,537 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:36:28,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:36:28,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:36:28,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:36:28,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:36:28,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:36:28,543 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 5 states. [2018-10-26 21:36:28,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:36:28,646 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2018-10-26 21:36:28,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:36:28,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-10-26 21:36:28,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:36:28,649 INFO L225 Difference]: With dead ends: 74 [2018-10-26 21:36:28,649 INFO L226 Difference]: Without dead ends: 46 [2018-10-26 21:36:28,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:36:28,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-26 21:36:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2018-10-26 21:36:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-26 21:36:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2018-10-26 21:36:28,660 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 37 [2018-10-26 21:36:28,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:36:28,660 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2018-10-26 21:36:28,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:36:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2018-10-26 21:36:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-26 21:36:28,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:36:28,663 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:36:28,663 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:36:28,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:36:28,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1874860434, now seen corresponding path program 1 times [2018-10-26 21:36:28,664 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 21:36:28,664 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 21:36:28,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:29,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:36:29,412 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 21:36:29,422 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:36:29,422 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:29,429 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:29,580 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:29,580 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:17 [2018-10-26 21:36:29,991 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 21:36:29,998 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 21:36:29,998 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,002 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,014 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-26 21:36:30,014 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:24 [2018-10-26 21:36:30,328 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 21:36:30,332 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:36:30,332 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,337 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,374 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 21:36:30,378 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:36:30,379 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,387 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,405 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-10-26 21:36:30,405 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:45, output treesize:37 [2018-10-26 21:36:30,585 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2018-10-26 21:36:30,590 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2018-10-26 21:36:30,590 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,592 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,617 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,618 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:53, output treesize:30 [2018-10-26 21:36:30,706 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-26 21:36:30,716 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 21:36:30,716 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,719 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,733 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-26 21:36:30,736 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 21:36:30,736 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,741 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,753 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,754 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:41, output treesize:16 [2018-10-26 21:36:30,809 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-26 21:36:30,812 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 21:36:30,812 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,820 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,824 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:30,825 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:9 [2018-10-26 21:36:30,884 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 21:36:30,884 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 21:36:31,269 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-10-26 21:36:31,510 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-10-26 21:36:31,626 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-10-26 21:36:32,276 WARN L179 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-10-26 21:36:32,475 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-10-26 21:36:32,727 WARN L179 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-10-26 21:36:32,995 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-10-26 21:36:33,133 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2018-10-26 21:36:33,139 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2018-10-26 21:36:33,144 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2018-10-26 21:36:33,145 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:33,148 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:33,190 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2018-10-26 21:36:33,197 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 21:36:33,197 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:33,223 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2018-10-26 21:36:33,228 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2018-10-26 21:36:33,229 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:33,248 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 7 [2018-10-26 21:36:33,249 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:33,258 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 21:36:33,266 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 21:36:33,292 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2018-10-26 21:36:33,292 INFO L202 ElimStorePlain]: Needed 8 recursive calls to eliminate 6 variables, input treesize:58, output treesize:41 [2018-10-26 21:36:33,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:36:33,404 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:36:33,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:33,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:36:33,655 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 21:36:33,658 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 21:36:33,658 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:33,660 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:33,666 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:33,666 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-10-26 21:36:33,925 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2018-10-26 21:36:33,932 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:36:33,932 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,044 INFO L477 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 19 treesize of output 31 [2018-10-26 21:36:34,057 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2018-10-26 21:36:34,057 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,117 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,132 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,162 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2018-10-26 21:36:34,168 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:36:34,168 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,201 INFO L477 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 19 treesize of output 31 [2018-10-26 21:36:34,205 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2018-10-26 21:36:34,206 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,260 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,268 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,282 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. [2018-10-26 21:36:34,282 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 4 variables, input treesize:62, output treesize:37 [2018-10-26 21:36:34,573 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2018-10-26 21:36:34,580 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 21:36:34,580 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,592 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,617 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 30 [2018-10-26 21:36:34,621 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2018-10-26 21:36:34,621 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,641 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2018-10-26 21:36:34,642 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,674 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2018-10-26 21:36:34,674 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,751 INFO L267 ElimStorePlain]: Start of recursive call 4: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,756 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,756 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:51, output treesize:11 [2018-10-26 21:36:34,809 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-26 21:36:34,812 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 21:36:34,812 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,813 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,815 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:34,815 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-10-26 21:36:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-26 21:36:34,820 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:36:34,847 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:36:34,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [20] total 30 [2018-10-26 21:36:34,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-26 21:36:34,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-26 21:36:34,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=968, Unknown=2, NotChecked=0, Total=1056 [2018-10-26 21:36:34,849 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 30 states. [2018-10-26 21:36:38,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:36:38,017 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2018-10-26 21:36:38,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-26 21:36:38,019 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 46 [2018-10-26 21:36:38,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:36:38,020 INFO L225 Difference]: With dead ends: 60 [2018-10-26 21:36:38,020 INFO L226 Difference]: Without dead ends: 58 [2018-10-26 21:36:38,021 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=157, Invalid=1733, Unknown=2, NotChecked=0, Total=1892 [2018-10-26 21:36:38,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-26 21:36:38,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2018-10-26 21:36:38,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-26 21:36:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2018-10-26 21:36:38,028 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 46 [2018-10-26 21:36:38,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:36:38,028 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2018-10-26 21:36:38,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-26 21:36:38,028 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2018-10-26 21:36:38,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-26 21:36:38,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:36:38,029 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:36:38,029 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:36:38,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:36:38,030 INFO L82 PathProgramCache]: Analyzing trace with hash -2081053043, now seen corresponding path program 1 times [2018-10-26 21:36:38,030 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 21:36:38,030 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 21:36:38,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:38,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:36:38,320 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 21:36:38,320 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:38,331 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:38,331 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-10-26 21:36:38,361 WARN L854 $PredicateComparison]: unable to prove that (exists ((|node_create_#Ultimate.alloc_#res.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |node_create_#Ultimate.alloc_#res.base|) (_ bv0 1)) (= (store |c_old(#valid)| |node_create_#Ultimate.alloc_#res.base| (_ bv1 1)) |c_#valid|))) is different from true [2018-10-26 21:36:38,542 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:36:38,544 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:36:38,545 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-10-26 21:36:38,557 INFO L477 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 20 [2018-10-26 21:36:38,557 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:38,565 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:38,576 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. [2018-10-26 21:36:38,576 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:27 [2018-10-26 21:36:38,643 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 21:36:38,646 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:36:38,646 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:38,649 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:38,663 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 21:36:38,664 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:41 [2018-10-26 21:36:38,797 WARN L854 $PredicateComparison]: unable to prove that (exists ((|node_create_write~$Pointer$_#ptr.offset| (_ BitVec 32)) (|node_create_write~$Pointer$_#value.base| (_ BitVec 32)) (|node_create_write~$Pointer$_#ptr.base| (_ BitVec 32))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_write~$Pointer$_#ptr.base| (store (select |c_old(#memory_$Pointer$.base)| |node_create_write~$Pointer$_#ptr.base|) |node_create_write~$Pointer$_#ptr.offset| |node_create_write~$Pointer$_#value.base|))) (= (_ bv0 1) (select |c_old(#valid)| |node_create_write~$Pointer$_#ptr.base|)))) is different from true [2018-10-26 21:36:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 12 not checked. [2018-10-26 21:36:39,031 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 21:36:39,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:36:39,451 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:36:39,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:39,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:36:39,584 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 21:36:39,585 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:39,587 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:39,587 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-10-26 21:36:40,045 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:36:40,048 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:36:40,048 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 29 [2018-10-26 21:36:40,055 INFO L477 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 25 treesize of output 20 [2018-10-26 21:36:40,055 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:40,064 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:40,075 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. [2018-10-26 21:36:40,076 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:24 [2018-10-26 21:36:40,196 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 21:36:40,198 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:36:40,198 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:40,202 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:40,215 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 21:36:40,215 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:41, output treesize:38 [2018-10-26 21:36:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2018-10-26 21:36:40,310 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 21:36:40,723 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:36:40,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 28 [2018-10-26 21:36:40,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-26 21:36:40,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-26 21:36:40,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=618, Unknown=20, NotChecked=102, Total=812 [2018-10-26 21:36:40,724 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 28 states. [2018-10-26 21:36:44,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:36:44,145 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2018-10-26 21:36:44,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-26 21:36:44,150 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 49 [2018-10-26 21:36:44,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:36:44,153 INFO L225 Difference]: With dead ends: 69 [2018-10-26 21:36:44,153 INFO L226 Difference]: Without dead ends: 59 [2018-10-26 21:36:44,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=92, Invalid=822, Unknown=24, NotChecked=118, Total=1056 [2018-10-26 21:36:44,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-26 21:36:44,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2018-10-26 21:36:44,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-26 21:36:44,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2018-10-26 21:36:44,171 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 49 [2018-10-26 21:36:44,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:36:44,171 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2018-10-26 21:36:44,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-26 21:36:44,171 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2018-10-26 21:36:44,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-26 21:36:44,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:36:44,173 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:36:44,173 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:36:44,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:36:44,173 INFO L82 PathProgramCache]: Analyzing trace with hash -663608324, now seen corresponding path program 1 times [2018-10-26 21:36:44,174 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 21:36:44,174 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 21:36:44,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:44,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:36:44,526 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 21:36:44,526 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:44,534 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:44,534 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-10-26 21:36:44,706 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 21:36:44,708 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:36:44,709 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:44,712 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:44,720 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:44,720 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2018-10-26 21:36:44,776 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:36:44,782 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 49 [2018-10-26 21:36:44,785 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-10-26 21:36:44,786 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:44,796 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:44,807 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:44,807 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:48, output treesize:29 [2018-10-26 21:36:44,860 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:36:44,863 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:36:44,864 INFO L477 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 24 treesize of output 44 [2018-10-26 21:36:44,872 INFO L477 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 0 case distinctions, treesize of input 32 treesize of output 32 [2018-10-26 21:36:44,873 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:44,882 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:44,899 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:44,899 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:39, output treesize:38 [2018-10-26 21:36:44,947 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 21:36:44,949 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:36:44,950 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:44,953 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:44,974 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:36:44,976 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 41 [2018-10-26 21:36:44,979 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2018-10-26 21:36:44,979 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:44,988 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:45,004 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:45,005 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:63, output treesize:58 [2018-10-26 21:36:45,219 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-10-26 21:36:45,223 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2018-10-26 21:36:45,223 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:45,225 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:45,236 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:45,237 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:43, output treesize:28 [2018-10-26 21:36:45,700 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-10-26 21:36:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 21:36:46,429 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 21:36:46,668 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-10-26 21:36:46,785 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-10-26 21:36:46,946 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2018-10-26 21:36:47,091 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2018-10-26 21:36:47,748 WARN L179 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-10-26 21:36:47,981 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2018-10-26 21:36:48,122 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-10-26 21:36:48,149 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 98 [2018-10-26 21:36:48,154 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2018-10-26 21:36:48,154 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:48,169 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:48,268 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 98 [2018-10-26 21:36:48,273 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2018-10-26 21:36:48,273 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:48,292 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:48,333 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-10-26 21:36:48,334 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:203, output treesize:149 [2018-10-26 21:36:48,775 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:36:48,775 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:36:48,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:36:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:36:48,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:36:48,866 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 21:36:48,867 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:48,877 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:48,878 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:13 [2018-10-26 21:36:49,026 WARN L854 $PredicateComparison]: unable to prove that (exists ((|node_create_write~intINTTYPE4_#ptr.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |node_create_write~intINTTYPE4_#ptr.base|)) (= |c_#valid| (store |c_old(#valid)| |node_create_write~intINTTYPE4_#ptr.base| (_ bv1 1))))) is different from true [2018-10-26 21:36:56,261 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:36:56,262 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:36:56,263 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:36:56,264 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2018-10-26 21:36:56,264 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:56,273 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:56,274 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:12 [2018-10-26 21:36:56,406 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 21:36:56,416 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:36:56,417 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:56,446 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:56,570 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:56,570 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2018-10-26 21:36:56,983 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 21:36:56,985 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 21:36:56,985 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:56,997 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:57,004 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:36:57,005 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2018-10-26 21:36:57,771 INFO L303 Elim1Store]: Index analysis took 150 ms [2018-10-26 21:36:57,771 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 60 [2018-10-26 21:36:57,793 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:36:57,793 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:58,064 INFO L303 Elim1Store]: Index analysis took 145 ms [2018-10-26 21:36:58,088 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 66 [2018-10-26 21:36:58,116 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 54 [2018-10-26 21:36:58,116 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:36:59,289 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 57 [2018-10-26 21:36:59,290 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-10-26 21:37:00,814 INFO L303 Elim1Store]: Index analysis took 158 ms [2018-10-26 21:37:00,859 INFO L477 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 54 treesize of output 117 [2018-10-26 21:37:00,871 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 70 [2018-10-26 21:37:00,871 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-26 21:37:01,581 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 69 [2018-10-26 21:37:01,582 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-10-26 21:37:02,066 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 69 [2018-10-26 21:37:02,067 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-10-26 21:37:02,593 INFO L267 ElimStorePlain]: Start of recursive call 7: 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 21:37:03,573 INFO L477 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 49 treesize of output 73 [2018-10-26 21:37:03,579 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2018-10-26 21:37:03,579 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-10-26 21:37:03,815 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 64 [2018-10-26 21:37:03,815 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 2 xjuncts. [2018-10-26 21:37:04,036 INFO L267 ElimStorePlain]: Start of recursive call 11: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 21:37:04,132 INFO L477 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 53 treesize of output 75 [2018-10-26 21:37:04,138 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 53 [2018-10-26 21:37:04,139 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-26 21:37:04,508 INFO L477 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 0 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 92 [2018-10-26 21:37:04,509 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 8 xjuncts. [2018-10-26 21:37:05,075 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-26 21:37:06,223 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 5 xjuncts. [2018-10-26 21:37:06,615 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 5 xjuncts. [2018-10-26 21:37:07,094 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 15 dim-0 vars, and 5 xjuncts. [2018-10-26 21:37:07,094 INFO L202 ElimStorePlain]: Needed 16 recursive calls to eliminate 7 variables, input treesize:174, output treesize:451 [2018-10-26 21:37:13,493 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-26 21:38:11,246 WARN L179 SmtUtils]: Spent 57.74 s on a formula simplification. DAG size of input: 175 DAG size of output: 91 [2018-10-26 21:38:11,250 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:38:11,256 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:38:11,257 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 82 [2018-10-26 21:38:11,329 INFO L477 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 21 [2018-10-26 21:38:11,334 INFO L477 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 14 treesize of output 7 [2018-10-26 21:38:11,334 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:11,341 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:11,367 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2018-10-26 21:38:11,370 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:38:11,370 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:11,379 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:11,395 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:14,746 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:38:14,759 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 84 [2018-10-26 21:38:14,763 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:38:14,764 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:14,812 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:38:14,820 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 21:38:14,821 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2018-10-26 21:38:14,825 INFO L477 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 35 treesize of output 23 [2018-10-26 21:38:14,826 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:14,849 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2018-10-26 21:38:14,854 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2018-10-26 21:38:14,854 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:14,864 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:14,872 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:14,889 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:15,655 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 77 [2018-10-26 21:38:15,678 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:38:15,679 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:15,832 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2018-10-26 21:38:15,839 INFO L477 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 30 treesize of output 23 [2018-10-26 21:38:15,840 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 21:38:15,901 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2018-10-26 21:38:15,911 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2018-10-26 21:38:15,911 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:15,987 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 29 [2018-10-26 21:38:15,988 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-10-26 21:38:16,019 INFO L267 ElimStorePlain]: Start of recursive call 17: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 21:38:16,050 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-26 21:38:16,095 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-26 21:38:16,104 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 66 [2018-10-26 21:38:16,110 INFO L477 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 15 treesize of output 15 [2018-10-26 21:38:16,110 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:16,150 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2018-10-26 21:38:16,157 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2018-10-26 21:38:16,157 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:16,169 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:38:16,177 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2018-10-26 21:38:16,180 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:38:16,181 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:16,189 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:16,197 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:16,215 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:16,373 INFO L267 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 3 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 21:38:16,373 INFO L202 ElimStorePlain]: Needed 25 recursive calls to eliminate 20 variables, input treesize:520, output treesize:64 [2018-10-26 21:38:16,888 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-26 21:38:16,895 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 21:38:16,895 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:16,897 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:16,907 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-10-26 21:38:16,909 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2018-10-26 21:38:16,910 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:16,912 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:16,918 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:16,918 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:37, output treesize:11 [2018-10-26 21:38:17,166 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-26 21:38:17,168 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 21:38:17,168 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:17,170 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:17,172 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:17,172 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-10-26 21:38:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2018-10-26 21:38:17,468 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 21:38:19,336 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-10-26 21:38:22,412 WARN L179 SmtUtils]: Spent 2.98 s on a formula simplification that was a NOOP. DAG size: 118 [2018-10-26 21:38:23,567 WARN L179 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 62 [2018-10-26 21:38:25,017 WARN L179 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 72 [2018-10-26 21:38:26,794 WARN L179 SmtUtils]: Spent 1.78 s on a formula simplification that was a NOOP. DAG size: 70 [2018-10-26 21:38:27,110 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2018-10-26 21:38:27,118 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 91 [2018-10-26 21:38:27,130 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 3 [2018-10-26 21:38:27,130 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:27,140 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:27,212 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 65 [2018-10-26 21:38:27,217 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 21:38:27,218 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:27,294 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 74 [2018-10-26 21:38:27,532 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2018-10-26 21:38:27,542 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2018-10-26 21:38:27,543 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:27,683 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 49 [2018-10-26 21:38:27,683 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-10-26 21:38:27,770 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2018-10-26 21:38:27,772 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2018-10-26 21:38:27,772 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:27,782 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:27,784 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2018-10-26 21:38:27,793 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 8 [2018-10-26 21:38:27,793 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-10-26 21:38:27,807 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 21:38:27,880 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 45 [2018-10-26 21:38:27,883 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 27 [2018-10-26 21:38:27,883 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-10-26 21:38:27,925 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 32 [2018-10-26 21:38:27,925 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2018-10-26 21:38:27,986 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 21:38:28,017 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:28,026 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:38:28,092 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-2 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2018-10-26 21:38:28,092 INFO L202 ElimStorePlain]: Needed 15 recursive calls to eliminate 9 variables, input treesize:185, output treesize:104 [2018-10-26 21:38:28,772 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:38:28,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 46 [2018-10-26 21:38:28,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-26 21:38:28,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-26 21:38:28,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=2228, Unknown=5, NotChecked=94, Total=2450 [2018-10-26 21:38:28,774 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 46 states. [2018-10-26 21:38:52,127 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 27 [2018-10-26 21:38:54,646 WARN L179 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2018-10-26 21:39:05,015 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-10-26 21:39:09,624 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2018-10-26 21:39:11,658 WARN L179 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2018-10-26 21:39:13,985 WARN L179 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2018-10-26 21:39:30,769 WARN L179 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 157 [2018-10-26 21:39:39,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:39:39,735 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2018-10-26 21:39:39,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-26 21:39:39,738 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 50 [2018-10-26 21:39:39,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:39:39,740 INFO L225 Difference]: With dead ends: 93 [2018-10-26 21:39:39,740 INFO L226 Difference]: Without dead ends: 85 [2018-10-26 21:39:39,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 54.8s TimeCoverageRelationStatistics Valid=248, Invalid=4570, Unknown=16, NotChecked=136, Total=4970 [2018-10-26 21:39:39,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-26 21:39:39,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2018-10-26 21:39:39,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-26 21:39:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2018-10-26 21:39:39,753 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 50 [2018-10-26 21:39:39,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:39:39,753 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2018-10-26 21:39:39,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-26 21:39:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2018-10-26 21:39:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-26 21:39:39,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:39:39,755 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:39:39,755 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:39:39,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:39:39,755 INFO L82 PathProgramCache]: Analyzing trace with hash -439042648, now seen corresponding path program 1 times [2018-10-26 21:39:39,756 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 21:39:39,756 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/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 [2018-10-26 21:39:39,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:39:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:39:40,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:39:40,195 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 21:39:40,195 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,207 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,207 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-10-26 21:39:40,438 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 21:39:40,441 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:39:40,441 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,443 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,456 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,456 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2018-10-26 21:39:40,511 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:40,518 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 58 [2018-10-26 21:39:40,520 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-10-26 21:39:40,520 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,532 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,544 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,544 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:57, output treesize:38 [2018-10-26 21:39:40,619 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:40,620 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:40,621 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:40,622 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 54 [2018-10-26 21:39:40,626 INFO L477 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 34 treesize of output 46 [2018-10-26 21:39:40,626 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,638 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,656 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,656 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:53, output treesize:52 [2018-10-26 21:39:40,720 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 21:39:40,722 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:39:40,723 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,726 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,758 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:40,760 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 49 [2018-10-26 21:39:40,764 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2018-10-26 21:39:40,764 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,775 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,809 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:40,809 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:75, output treesize:74 [2018-10-26 21:39:41,018 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2018-10-26 21:39:41,023 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2018-10-26 21:39:41,024 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:41,025 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:41,074 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 21:39:41,077 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 21:39:41,078 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:41,082 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:41,101 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:41,101 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:63, output treesize:40 [2018-10-26 21:39:42,133 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((|sll_circular_prepend_read~$Pointer$_#value.offset| (_ BitVec 32)) (|sll_circular_prepend_write~$Pointer$_#value.offset| (_ BitVec 32)) (|sll_circular_prepend_write~$Pointer$_#value.base| (_ BitVec 32)) (sll_circular_prepend_~new_head~1.base (_ BitVec 32)) (|sll_circular_prepend_read~$Pointer$_#value.base| (_ BitVec 32)) (|sll_circular_prepend_write~$Pointer$_#ptr.offset| (_ BitVec 32))) (let ((.cse7 (select |c_old(#memory_$Pointer$.offset)| sll_circular_prepend_~new_head~1.base))) (let ((.cse3 (select |c_old(#memory_$Pointer$.base)| sll_circular_prepend_~new_head~1.base)) (.cse4 (select (select (store |c_old(#memory_$Pointer$.offset)| sll_circular_prepend_~new_head~1.base (store .cse7 (_ bv0 32) (_ bv0 32))) |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset|))) (let ((.cse1 (select (let ((.cse8 (store |c_old(#memory_$Pointer$.base)| sll_circular_prepend_~new_head~1.base (store .cse3 (_ bv0 32) (_ bv0 32))))) (select .cse8 (select (select .cse8 |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset|))) .cse4))) (and (= |c_sll_circular_prepend_#in~data| (select (select |c_#memory_int| sll_circular_prepend_~new_head~1.base) (_ bv4 32))) (= (let ((.cse0 (let ((.cse2 (store |c_old(#memory_$Pointer$.base)| sll_circular_prepend_~new_head~1.base (store .cse3 (_ bv0 32) |sll_circular_prepend_read~$Pointer$_#value.base|)))) (store .cse2 |c_sll_circular_prepend_#in~head.base| (store (select .cse2 |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset| sll_circular_prepend_~new_head~1.base))))) (store .cse0 .cse1 (store (select .cse0 .cse1) |sll_circular_prepend_write~$Pointer$_#ptr.offset| |sll_circular_prepend_write~$Pointer$_#value.base|))) |c_#memory_$Pointer$.base|) (not (= .cse4 (_ bv0 32))) (= (let ((.cse5 (let ((.cse6 (store |c_old(#memory_$Pointer$.offset)| sll_circular_prepend_~new_head~1.base (store .cse7 (_ bv0 32) |sll_circular_prepend_read~$Pointer$_#value.offset|)))) (store .cse6 |c_sll_circular_prepend_#in~head.base| (store (select .cse6 |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset| (_ bv0 32)))))) (store .cse5 .cse1 (store (select .cse5 .cse1) |sll_circular_prepend_write~$Pointer$_#ptr.offset| |sll_circular_prepend_write~$Pointer$_#value.offset|))) |c_#memory_$Pointer$.offset|) (= (_ bv0 1) (select |c_old(#valid)| sll_circular_prepend_~new_head~1.base))))))) (exists ((v_prenex_40 (_ BitVec 32)) (v_prenex_41 (_ BitVec 32)) (v_prenex_42 (_ BitVec 32)) (v_prenex_43 (_ BitVec 32)) (v_prenex_38 (_ BitVec 32)) (v_prenex_39 (_ BitVec 32))) (let ((.cse16 (select |c_old(#memory_$Pointer$.base)| v_prenex_39))) (let ((.cse17 (store |c_old(#memory_$Pointer$.base)| v_prenex_39 (store .cse16 (_ bv0 32) (_ bv0 32))))) (let ((.cse13 (select (select .cse17 |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset|)) (.cse12 (select |c_old(#memory_$Pointer$.offset)| v_prenex_39))) (let ((.cse10 (select (select .cse17 .cse13) (select (select (store |c_old(#memory_$Pointer$.offset)| v_prenex_39 (store .cse12 (_ bv0 32) (_ bv0 32))) |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset|)))) (and (= (let ((.cse9 (let ((.cse11 (store |c_old(#memory_$Pointer$.offset)| v_prenex_39 (store .cse12 (_ bv0 32) v_prenex_40)))) (store .cse11 |c_sll_circular_prepend_#in~head.base| (store (select .cse11 |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset| (_ bv0 32)))))) (store .cse9 .cse10 (store (select .cse9 .cse10) v_prenex_43 v_prenex_41))) |c_#memory_$Pointer$.offset|) (= |c_sll_circular_prepend_#in~data| (select (select |c_#memory_int| v_prenex_39) (_ bv4 32))) (not (= (_ bv0 32) .cse13)) (= (_ bv0 1) (select |c_old(#valid)| v_prenex_39)) (= |c_#memory_$Pointer$.base| (let ((.cse14 (let ((.cse15 (store |c_old(#memory_$Pointer$.base)| v_prenex_39 (store .cse16 (_ bv0 32) v_prenex_42)))) (store .cse15 |c_sll_circular_prepend_#in~head.base| (store (select .cse15 |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset| v_prenex_39))))) (store .cse14 .cse10 (store (select .cse14 .cse10) v_prenex_43 v_prenex_38))))))))))) is different from true [2018-10-26 21:39:52,068 WARN L179 SmtUtils]: Spent 9.92 s on a formula simplification. DAG size of input: 192 DAG size of output: 80 [2018-10-26 21:39:52,197 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:52,251 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:52,380 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:52,473 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:52,473 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 21:39:52,474 INFO L303 Elim1Store]: Index analysis took 405 ms [2018-10-26 21:39:52,475 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 61 [2018-10-26 21:39:52,475 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:54,566 INFO L303 Elim1Store]: Index analysis took 1131 ms [2018-10-26 21:39:54,567 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 238 treesize of output 194 [2018-10-26 21:39:54,639 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 17 treesize of output 15 [2018-10-26 21:39:54,639 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:54,930 INFO L477 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 181 treesize of output 173 [2018-10-26 21:39:54,960 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 154 [2018-10-26 21:39:54,960 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:55,132 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:55,607 INFO L303 Elim1Store]: Index analysis took 309 ms [2018-10-26 21:39:55,607 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2018-10-26 21:39:55,623 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:39:55,623 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:55,762 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:55,774 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:56,001 INFO L303 Elim1Store]: Index analysis took 278 ms [2018-10-26 21:39:56,002 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 83 [2018-10-26 21:39:56,021 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2018-10-26 21:39:56,022 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:56,180 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:56,250 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:56,316 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:56,566 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:56,566 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 21:39:56,593 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:56,693 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:56,740 INFO L303 Elim1Store]: Index analysis took 188 ms [2018-10-26 21:39:56,741 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 154 [2018-10-26 21:39:56,756 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 26 treesize of output 23 [2018-10-26 21:39:56,757 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:56,848 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:56,859 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:56,863 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:56,882 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:56,883 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 160 [2018-10-26 21:39:56,929 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 87 [2018-10-26 21:39:56,930 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-10-26 21:39:57,018 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:57,020 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:57,022 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:57,024 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:57,032 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:57,058 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 169 [2018-10-26 21:39:57,065 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-10-26 21:39:57,065 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:57,115 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:57,150 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:57,198 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:57,199 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 84 [2018-10-26 21:39:57,228 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 69 [2018-10-26 21:39:57,229 INFO L267 ElimStorePlain]: Start of recursive call 18: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2018-10-26 21:39:57,353 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 67 [2018-10-26 21:39:57,354 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-10-26 21:39:57,363 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2018-10-26 21:39:57,363 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:57,467 INFO L267 ElimStorePlain]: Start of recursive call 17: 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-10-26 21:39:57,549 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-10-26 21:39:57,668 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-10-26 21:39:57,668 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 18 variables, input treesize:729, output treesize:151 [2018-10-26 21:39:57,860 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-26 21:39:57,864 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 21:39:57,864 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:57,867 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:57,899 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:57,900 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:39:57,901 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 55 [2018-10-26 21:39:57,915 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2018-10-26 21:39:57,916 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:57,927 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 16 [2018-10-26 21:39:57,928 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:57,935 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:57,948 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:57,948 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 4 variables, input treesize:86, output treesize:16 [2018-10-26 21:39:58,008 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-26 21:39:58,009 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 21:39:58,009 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:39:58,011 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:58,014 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:39:58,014 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:9 [2018-10-26 21:39:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 21:39:58,092 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 21:39:58,908 WARN L179 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2018-10-26 21:39:59,158 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-10-26 21:39:59,534 WARN L179 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-10-26 21:39:59,875 WARN L179 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2018-10-26 21:40:09,210 WARN L179 SmtUtils]: Spent 9.33 s on a formula simplification that was a NOOP. DAG size: 177 [2018-10-26 21:40:11,057 WARN L179 SmtUtils]: Spent 1.84 s on a formula simplification that was a NOOP. DAG size: 84 [2018-10-26 21:40:13,521 WARN L179 SmtUtils]: Spent 2.46 s on a formula simplification that was a NOOP. DAG size: 102 [2018-10-26 21:40:15,716 WARN L179 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 96 [2018-10-26 21:40:24,215 WARN L179 SmtUtils]: Spent 8.49 s on a formula simplification. DAG size of input: 130 DAG size of output: 126 [2018-10-26 21:40:24,249 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 457 treesize of output 454 [2018-10-26 21:40:24,264 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2018-10-26 21:40:24,264 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:24,387 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:40:24,443 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 457 treesize of output 454 [2018-10-26 21:40:24,454 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2018-10-26 21:40:24,454 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:24,575 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:40:25,990 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 457 treesize of output 454 [2018-10-26 21:40:26,007 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2018-10-26 21:40:26,007 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:26,088 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:40:26,156 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 457 treesize of output 454 [2018-10-26 21:40:26,169 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2018-10-26 21:40:26,170 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:26,243 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:40:27,337 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 430 treesize of output 296 [2018-10-26 21:40:27,344 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 3 [2018-10-26 21:40:27,344 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:27,373 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:40:27,381 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 430 treesize of output 296 [2018-10-26 21:40:27,394 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 3 [2018-10-26 21:40:27,394 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:27,426 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:40:28,333 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 430 treesize of output 296 [2018-10-26 21:40:28,344 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 3 [2018-10-26 21:40:28,344 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:28,376 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:40:28,387 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 430 treesize of output 296 [2018-10-26 21:40:28,411 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 3 [2018-10-26 21:40:28,411 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:28,454 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:40:29,065 INFO L267 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 4 dim-2 vars, End of recursive call: 16 dim-0 vars, and 4 xjuncts. [2018-10-26 21:40:29,066 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:661, output treesize:629 [2018-10-26 21:40:44,178 WARN L179 SmtUtils]: Spent 8.36 s on a formula simplification. DAG size of input: 140 DAG size of output: 107 [2018-10-26 21:40:44,181 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:40:44,181 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:40:44,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:40:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:40:44,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:40:44,441 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-26 21:40:44,442 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 21:40:44,443 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:44,446 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:40:44,451 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:40:44,451 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-10-26 21:40:44,846 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 36 [2018-10-26 21:40:44,864 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:40:44,864 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:45,183 INFO L303 Elim1Store]: Index analysis took 229 ms [2018-10-26 21:40:45,208 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 42 [2018-10-26 21:40:45,219 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2018-10-26 21:40:45,220 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:45,947 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 33 [2018-10-26 21:40:45,948 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-10-26 21:40:47,736 INFO L303 Elim1Store]: Index analysis took 172 ms [2018-10-26 21:40:47,784 INFO L477 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 29 treesize of output 54 [2018-10-26 21:40:47,837 INFO L477 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 0 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 40 [2018-10-26 21:40:47,838 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2018-10-26 21:40:48,906 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2018-10-26 21:40:48,906 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:49,564 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 44 [2018-10-26 21:40:49,565 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 4 xjuncts. [2018-10-26 21:40:50,194 INFO L267 ElimStorePlain]: Start of recursive call 7: 3 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-10-26 21:40:52,426 INFO L477 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 25 treesize of output 37 [2018-10-26 21:40:52,432 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 24 [2018-10-26 21:40:52,432 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:52,538 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2018-10-26 21:40:52,538 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:52,612 INFO L267 ElimStorePlain]: Start of recursive call 11: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:40:53,932 INFO L303 Elim1Store]: Index analysis took 177 ms [2018-10-26 21:40:53,977 INFO L477 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 26 treesize of output 53 [2018-10-26 21:40:53,987 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2018-10-26 21:40:53,988 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:55,258 INFO L477 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 0 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 40 [2018-10-26 21:40:55,258 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 4 xjuncts. [2018-10-26 21:40:55,809 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 33 [2018-10-26 21:40:55,810 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 2 xjuncts. [2018-10-26 21:40:56,044 INFO L267 ElimStorePlain]: Start of recursive call 14: 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 21:40:56,424 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 21:40:56,648 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 21:40:56,808 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 36 [2018-10-26 21:40:56,812 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:40:56,812 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:56,894 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 42 [2018-10-26 21:40:56,900 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2018-10-26 21:40:56,901 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:57,131 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 33 [2018-10-26 21:40:57,131 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 2 xjuncts. [2018-10-26 21:40:57,457 INFO L477 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 29 treesize of output 54 [2018-10-26 21:40:57,463 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2018-10-26 21:40:57,463 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:57,761 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 44 [2018-10-26 21:40:57,761 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 4 xjuncts. [2018-10-26 21:40:58,016 INFO L477 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 0 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 40 [2018-10-26 21:40:58,016 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 4 xjuncts. [2018-10-26 21:40:58,224 INFO L267 ElimStorePlain]: Start of recursive call 23: 3 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-10-26 21:40:58,675 INFO L477 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 26 treesize of output 53 [2018-10-26 21:40:58,679 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2018-10-26 21:40:58,680 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:58,909 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 33 [2018-10-26 21:40:58,909 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 2 xjuncts. [2018-10-26 21:40:59,083 INFO L477 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 0 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 40 [2018-10-26 21:40:59,084 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 4 xjuncts. [2018-10-26 21:40:59,166 INFO L267 ElimStorePlain]: Start of recursive call 27: 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 21:40:59,344 INFO L477 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 25 treesize of output 37 [2018-10-26 21:40:59,348 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2018-10-26 21:40:59,348 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:59,418 INFO L267 ElimStorePlain]: Start of recursive call 31: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:40:59,510 INFO L267 ElimStorePlain]: Start of recursive call 20: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-10-26 21:40:59,585 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 21:40:59,685 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2018-10-26 21:40:59,685 INFO L202 ElimStorePlain]: Needed 32 recursive calls to eliminate 7 variables, input treesize:126, output treesize:161 [2018-10-26 21:40:59,978 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-26 21:40:59,980 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 21:40:59,980 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:59,983 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:40:59,992 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-10-26 21:40:59,994 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2018-10-26 21:40:59,994 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:40:59,996 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:00,000 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:00,000 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2018-10-26 21:41:00,090 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-26 21:41:00,092 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 21:41:00,092 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:41:00,093 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:00,095 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:00,095 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-10-26 21:41:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-26 21:41:00,098 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:41:00,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:41:00,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [27] total 36 [2018-10-26 21:41:00,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-26 21:41:00,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-26 21:41:00,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1310, Unknown=3, NotChecked=72, Total=1482 [2018-10-26 21:41:00,116 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand 36 states. [2018-10-26 21:41:18,966 WARN L179 SmtUtils]: Spent 3.53 s on a formula simplification that was a NOOP. DAG size: 120 [2018-10-26 21:41:29,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:41:29,938 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2018-10-26 21:41:29,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-26 21:41:29,944 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 53 [2018-10-26 21:41:29,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:41:29,945 INFO L225 Difference]: With dead ends: 93 [2018-10-26 21:41:29,945 INFO L226 Difference]: Without dead ends: 91 [2018-10-26 21:41:29,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=192, Invalid=2461, Unknown=3, NotChecked=100, Total=2756 [2018-10-26 21:41:29,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-26 21:41:29,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 61. [2018-10-26 21:41:29,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-26 21:41:29,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2018-10-26 21:41:29,959 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 53 [2018-10-26 21:41:29,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:41:29,960 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2018-10-26 21:41:29,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-26 21:41:29,960 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2018-10-26 21:41:29,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-26 21:41:29,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:41:29,964 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:41:29,964 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:41:29,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:41:29,964 INFO L82 PathProgramCache]: Analyzing trace with hash -699506380, now seen corresponding path program 2 times [2018-10-26 21:41:29,964 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 21:41:29,964 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/cvc4nyu Starting monitored process 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 21:41:29,997 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-10-26 21:41:30,227 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 21:41:30,228 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 21:41:30,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:41:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-26 21:41:30,337 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 21:41:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-26 21:41:30,528 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:41:30,528 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:41:30,535 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 21:41:30,630 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 21:41:30,630 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 21:41:30,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:41:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-26 21:41:30,640 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 21:41:30,758 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-26 21:41:30,776 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-10-26 21:41:30,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6] total 9 [2018-10-26 21:41:30,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 21:41:30,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 21:41:30,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:41:30,777 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 9 states. [2018-10-26 21:41:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:41:30,896 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2018-10-26 21:41:30,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:41:30,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2018-10-26 21:41:30,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:41:30,898 INFO L225 Difference]: With dead ends: 94 [2018-10-26 21:41:30,898 INFO L226 Difference]: Without dead ends: 49 [2018-10-26 21:41:30,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-26 21:41:30,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-26 21:41:30,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-26 21:41:30,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-26 21:41:30,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-10-26 21:41:30,917 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 58 [2018-10-26 21:41:30,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:41:30,918 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-10-26 21:41:30,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 21:41:30,918 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-10-26 21:41:30,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-26 21:41:30,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:41:30,922 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:41:30,922 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:41:30,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:41:30,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1342668105, now seen corresponding path program 1 times [2018-10-26 21:41:30,923 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 21:41:30,923 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ef0296c-6cf6-4ae5-9481-c94791c2a5da/bin-2019/utaipan/cvc4nyu Starting monitored process 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 21:41:30,941 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 21:41:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:41:31,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:41:31,362 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 21:41:31,362 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,377 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,378 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-10-26 21:41:31,510 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 21:41:31,512 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:41:31,512 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,515 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,532 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,532 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2018-10-26 21:41:31,572 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:41:31,578 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 58 [2018-10-26 21:41:31,582 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-10-26 21:41:31,582 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,594 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,606 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,606 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:57, output treesize:38 [2018-10-26 21:41:31,670 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:41:31,672 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:41:31,673 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:41:31,674 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 54 [2018-10-26 21:41:31,690 INFO L477 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 34 treesize of output 46 [2018-10-26 21:41:31,690 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,703 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,719 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,720 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:46, output treesize:47 [2018-10-26 21:41:31,780 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 21:41:31,782 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 21:41:31,782 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,785 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,816 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:41:31,818 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 49 [2018-10-26 21:41:31,822 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2018-10-26 21:41:31,822 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,832 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,854 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:31,854 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:70, output treesize:69 [2018-10-26 21:41:32,019 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-10-26 21:41:32,022 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2018-10-26 21:41:32,022 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:41:32,024 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:32,034 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:41:32,035 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:43, output treesize:28 [2018-10-26 21:41:32,871 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_73 (_ BitVec 32)) (v_prenex_74 (_ BitVec 32)) (v_prenex_75 (_ BitVec 32)) (v_prenex_76 (_ BitVec 32)) (v_prenex_77 (_ BitVec 32)) (v_prenex_78 (_ BitVec 32))) (let ((.cse4 (store (select |c_old(#memory_$Pointer$.base)| v_prenex_74) (_ bv0 32) (_ bv0 32)))) (let ((.cse8 (store (select |c_old(#memory_$Pointer$.offset)| v_prenex_74) (_ bv0 32) (_ bv0 32))) (.cse9 (store |c_old(#memory_$Pointer$.base)| v_prenex_74 .cse4))) (let ((.cse5 (select (select .cse9 |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset|)) (.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| v_prenex_74 .cse8) |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset|))) (let ((.cse2 (select (select .cse9 .cse5) .cse0))) (and (not (= .cse0 (_ bv0 32))) (= (let ((.cse1 (let ((.cse3 (store |c_old(#memory_$Pointer$.base)| v_prenex_74 (store .cse4 v_prenex_75 .cse5)))) (store .cse3 |c_sll_circular_prepend_#in~head.base| (store (select .cse3 |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset| v_prenex_74))))) (store .cse1 .cse2 (store (select .cse1 .cse2) v_prenex_78 v_prenex_73))) |c_#memory_$Pointer$.base|) (= (_ bv0 1) (select |c_old(#valid)| v_prenex_74)) (= (let ((.cse6 (let ((.cse7 (store |c_old(#memory_$Pointer$.offset)| v_prenex_74 (store .cse8 v_prenex_75 v_prenex_76)))) (store .cse7 |c_sll_circular_prepend_#in~head.base| (store (select .cse7 |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset| v_prenex_75))))) (store .cse6 .cse2 (store (select .cse6 .cse2) v_prenex_78 v_prenex_77))) |c_#memory_$Pointer$.offset|))))))) (exists ((|sll_circular_prepend_read~$Pointer$_#value.offset| (_ BitVec 32)) (|sll_circular_prepend_write~$Pointer$_#value.offset| (_ BitVec 32)) (|sll_circular_prepend_write~$Pointer$_#value.base| (_ BitVec 32)) (sll_circular_prepend_~new_head~1.base (_ BitVec 32)) (sll_circular_prepend_~new_head~1.offset (_ BitVec 32)) (|sll_circular_prepend_write~$Pointer$_#ptr.offset| (_ BitVec 32))) (let ((.cse17 (store (select |c_old(#memory_$Pointer$.base)| sll_circular_prepend_~new_head~1.base) (_ bv0 32) (_ bv0 32)))) (let ((.cse18 (store |c_old(#memory_$Pointer$.base)| sll_circular_prepend_~new_head~1.base .cse17))) (let ((.cse14 (select (select .cse18 |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset|)) (.cse13 (store (select |c_old(#memory_$Pointer$.offset)| sll_circular_prepend_~new_head~1.base) (_ bv0 32) (_ bv0 32)))) (let ((.cse11 (select (select .cse18 .cse14) (select (select (store |c_old(#memory_$Pointer$.offset)| sll_circular_prepend_~new_head~1.base .cse13) |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset|)))) (and (= (let ((.cse10 (let ((.cse12 (store |c_old(#memory_$Pointer$.offset)| sll_circular_prepend_~new_head~1.base (store .cse13 sll_circular_prepend_~new_head~1.offset |sll_circular_prepend_read~$Pointer$_#value.offset|)))) (store .cse12 |c_sll_circular_prepend_#in~head.base| (store (select .cse12 |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset| sll_circular_prepend_~new_head~1.offset))))) (store .cse10 .cse11 (store (select .cse10 .cse11) |sll_circular_prepend_write~$Pointer$_#ptr.offset| |sll_circular_prepend_write~$Pointer$_#value.offset|))) |c_#memory_$Pointer$.offset|) (not (= (_ bv0 32) .cse14)) (= |c_#memory_$Pointer$.base| (let ((.cse15 (let ((.cse16 (store |c_old(#memory_$Pointer$.base)| sll_circular_prepend_~new_head~1.base (store .cse17 sll_circular_prepend_~new_head~1.offset .cse14)))) (store .cse16 |c_sll_circular_prepend_#in~head.base| (store (select .cse16 |c_sll_circular_prepend_#in~head.base|) |c_sll_circular_prepend_#in~head.offset| sll_circular_prepend_~new_head~1.base))))) (store .cse15 .cse11 (store (select .cse15 .cse11) |sll_circular_prepend_write~$Pointer$_#ptr.offset| |sll_circular_prepend_write~$Pointer$_#value.base|)))) (= (_ bv0 1) (select |c_old(#valid)| sll_circular_prepend_~new_head~1.base))))))))) is different from true [2018-10-26 21:42:24,164 WARN L179 SmtUtils]: Spent 51.28 s on a formula simplification. DAG size of input: 311 DAG size of output: 70 [2018-10-26 21:42:24,267 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:42:24,326 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:42:24,407 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:42:24,467 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 21:42:24,468 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 21:42:24,469 INFO L303 Elim1Store]: Index analysis took 303 ms [2018-10-26 21:42:24,469 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 61 [2018-10-26 21:42:24,470 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 21:42:25,991 INFO L303 Elim1Store]: Index analysis took 604 ms [2018-10-26 21:42:25,992 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 195 [2018-10-26 21:42:26,745 WARN L179 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-10-26 21:42:26,799 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2018-10-26 21:42:26,799 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 21:42:27,268 INFO L477 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 181 treesize of output 169 [2018-10-26 21:42:27,430 INFO L303 Elim1Store]: Index analysis took 160 ms [2018-10-26 21:42:27,438 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 19 [2018-10-26 21:42:27,439 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-10-26 21:42:27,834 INFO L303 Elim1Store]: Index analysis took 102 ms [2018-10-26 21:42:27,835 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 144 [2018-10-26 21:42:28,078 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 21:42:28,079 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_33 term 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.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:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-26 21:42:28,082 INFO L168 Benchmark]: Toolchain (without parser) took 361954.38 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 299.4 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -129.1 MB). Peak memory consumption was 170.3 MB. Max. memory is 11.5 GB. [2018-10-26 21:42:28,082 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:42:28,082 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.67 ms. Allocated memory is still 1.0 GB. Free memory was 946.5 MB in the beginning and 925.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-10-26 21:42:28,082 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.82 ms. Allocated memory is still 1.0 GB. Free memory was 925.1 MB in the beginning and 919.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 21:42:28,083 INFO L168 Benchmark]: Boogie Preprocessor took 168.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Free memory was 919.7 MB in the beginning and 1.2 GB in the end (delta: -257.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:42:28,083 INFO L168 Benchmark]: RCFGBuilder took 924.32 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: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 11.5 GB. [2018-10-26 21:42:28,083 INFO L168 Benchmark]: TraceAbstraction took 360370.51 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 109.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 153.3 MB. Max. memory is 11.5 GB. [2018-10-26 21:42:28,085 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 419.67 ms. Allocated memory is still 1.0 GB. Free memory was 946.5 MB in the beginning and 925.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 67.82 ms. Allocated memory is still 1.0 GB. Free memory was 925.1 MB in the beginning and 919.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 168.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Free memory was 919.7 MB in the beginning and 1.2 GB in the end (delta: -257.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 924.32 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: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 360370.51 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 109.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 153.3 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_33 term size 22 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_33 term 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...