./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-simple/sll2c_remove_all_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_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_remove_all_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 590f2fd0a15702fbce6a9c41b648e01dde5bd93d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_remove_all_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 590f2fd0a15702fbce6a9c41b648e01dde5bd93d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_prenex_74 term size 41 --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 02:32:58,355 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 02:32:58,357 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 02:32:58,365 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 02:32:58,365 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 02:32:58,366 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 02:32:58,367 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 02:32:58,368 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 02:32:58,369 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 02:32:58,369 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 02:32:58,371 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 02:32:58,371 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 02:32:58,371 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 02:32:58,372 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 02:32:58,373 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 02:32:58,373 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 02:32:58,374 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 02:32:58,376 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 02:32:58,377 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 02:32:58,378 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 02:32:58,379 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 02:32:58,380 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 02:32:58,382 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 02:32:58,382 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 02:32:58,382 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 02:32:58,383 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 02:32:58,383 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 02:32:58,384 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 02:32:58,385 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 02:32:58,385 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 02:32:58,385 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 02:32:58,387 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 02:32:58,387 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 02:32:58,387 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 02:32:58,388 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 02:32:58,388 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 02:32:58,389 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 02:32:58,398 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 02:32:58,398 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 02:32:58,399 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 02:32:58,399 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 02:32:58,400 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 02:32:58,400 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 02:32:58,400 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 02:32:58,400 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 02:32:58,400 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 02:32:58,400 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 02:32:58,400 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 02:32:58,400 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 02:32:58,400 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 02:32:58,401 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 02:32:58,401 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 02:32:58,401 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 02:32:58,401 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 02:32:58,401 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 02:32:58,401 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 02:32:58,401 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 02:32:58,403 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 02:32:58,403 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 02:32:58,403 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 02:32:58,404 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 02:32:58,404 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 02:32:58,404 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 02:32:58,404 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 02:32:58,404 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 02:32:58,404 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 02:32:58,404 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_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 590f2fd0a15702fbce6a9c41b648e01dde5bd93d [2018-11-10 02:32:58,429 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 02:32:58,439 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 02:32:58,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 02:32:58,443 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 02:32:58,443 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 02:32:58,444 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/../../sv-benchmarks/c/list-simple/sll2c_remove_all_true-unreach-call_true-valid-memsafety.i [2018-11-10 02:32:58,490 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/data/57306a4f0/76c449dcb097476d80b122dfbdebc139/FLAG2b130e7ac [2018-11-10 02:32:58,833 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 02:32:58,833 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/sv-benchmarks/c/list-simple/sll2c_remove_all_true-unreach-call_true-valid-memsafety.i [2018-11-10 02:32:58,840 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/data/57306a4f0/76c449dcb097476d80b122dfbdebc139/FLAG2b130e7ac [2018-11-10 02:32:58,849 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/data/57306a4f0/76c449dcb097476d80b122dfbdebc139 [2018-11-10 02:32:58,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 02:32:58,852 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 02:32:58,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 02:32:58,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 02:32:58,855 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 02:32:58,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:32:58" (1/1) ... [2018-11-10 02:32:58,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff31fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:32:58, skipping insertion in model container [2018-11-10 02:32:58,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:32:58" (1/1) ... [2018-11-10 02:32:58,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 02:32:58,892 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 02:32:59,084 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 02:32:59,090 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 02:32:59,123 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 02:32:59,147 INFO L193 MainTranslator]: Completed translation [2018-11-10 02:32:59,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:32:59 WrapperNode [2018-11-10 02:32:59,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 02:32:59,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 02:32:59,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 02:32:59,148 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 02:32:59,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:32:59" (1/1) ... [2018-11-10 02:32:59,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:32:59" (1/1) ... [2018-11-10 02:32:59,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:32:59" (1/1) ... [2018-11-10 02:32:59,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:32:59" (1/1) ... [2018-11-10 02:32:59,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:32:59" (1/1) ... [2018-11-10 02:32:59,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:32:59" (1/1) ... [2018-11-10 02:32:59,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:32:59" (1/1) ... [2018-11-10 02:32:59,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 02:32:59,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 02:32:59,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 02:32:59,232 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 02:32:59,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:32:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 02:32:59,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 02:32:59,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 02:32:59,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-10 02:32:59,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-10 02:32:59,268 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-10 02:32:59,268 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-10 02:32:59,268 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2018-11-10 02:32:59,269 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_remove_first [2018-11-10 02:32:59,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 02:32:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 02:32:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-10 02:32:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-10 02:32:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-10 02:32:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-10 02:32:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-10 02:32:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-10 02:32:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-10 02:32:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-10 02:32:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-10 02:32:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-10 02:32:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-10 02:32:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-10 02:32:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-10 02:32:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-10 02:32:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-10 02:32:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-10 02:32:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-10 02:32:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-10 02:32:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-10 02:32:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-10 02:32:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-10 02:32:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-10 02:32:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-10 02:32:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-10 02:32:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-10 02:32:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-10 02:32:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-10 02:32:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-10 02:32:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-10 02:32:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-10 02:32:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-10 02:32:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-10 02:32:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-10 02:32:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-10 02:32:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-10 02:32:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-10 02:32:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-10 02:32:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-10 02:32:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-10 02:32:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-10 02:32:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-10 02:32:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-10 02:32:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-10 02:32:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-10 02:32:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-10 02:32:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-10 02:32:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-10 02:32:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-10 02:32:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-10 02:32:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-10 02:32:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-10 02:32:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-10 02:32:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-10 02:32:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-10 02:32:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-10 02:32:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-10 02:32:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-10 02:32:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-10 02:32:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-10 02:32:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-10 02:32:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-10 02:32:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-10 02:32:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-10 02:32:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-10 02:32:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-10 02:32:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 02:32:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-10 02:32:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-10 02:32:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-10 02:32:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-10 02:32:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-10 02:32:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-10 02:32:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-10 02:32:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-10 02:32:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-10 02:32:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-10 02:32:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-10 02:32:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-10 02:32:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-10 02:32:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-10 02:32:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-10 02:32:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-10 02:32:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-10 02:32:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-10 02:32:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-10 02:32:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-10 02:32:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-10 02:32:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-10 02:32:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-10 02:32:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-10 02:32:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-10 02:32:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-10 02:32:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-10 02:32:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-10 02:32:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-10 02:32:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-10 02:32:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-10 02:32:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-10 02:32:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-10 02:32:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-10 02:32:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-10 02:32:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-10 02:32:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-10 02:32:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-10 02:32:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-10 02:32:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-10 02:32:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 02:32:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-10 02:32:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 02:32:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2018-11-10 02:32:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_remove_first [2018-11-10 02:32:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-10 02:32:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 02:32:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 02:32:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 02:32:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 02:32:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 02:32:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 02:32:59,601 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 02:32:59,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:32:59 BoogieIcfgContainer [2018-11-10 02:32:59,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 02:32:59,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 02:32:59,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 02:32:59,604 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 02:32:59,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 02:32:58" (1/3) ... [2018-11-10 02:32:59,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4860de34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:32:59, skipping insertion in model container [2018-11-10 02:32:59,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:32:59" (2/3) ... [2018-11-10 02:32:59,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4860de34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:32:59, skipping insertion in model container [2018-11-10 02:32:59,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:32:59" (3/3) ... [2018-11-10 02:32:59,608 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all_true-unreach-call_true-valid-memsafety.i [2018-11-10 02:32:59,614 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 02:32:59,619 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 02:32:59,628 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 02:32:59,646 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 02:32:59,646 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 02:32:59,646 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 02:32:59,646 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 02:32:59,646 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 02:32:59,646 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 02:32:59,646 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 02:32:59,647 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 02:32:59,647 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 02:32:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2018-11-10 02:32:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-10 02:32:59,663 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:32:59,664 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:32:59,666 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:32:59,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:32:59,670 INFO L82 PathProgramCache]: Analyzing trace with hash -663800797, now seen corresponding path program 1 times [2018-11-10 02:32:59,672 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:32:59,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:32:59,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:32:59,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:32:59,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:32:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:32:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:32:59,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 02:32:59,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 02:32:59,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 02:32:59,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 02:32:59,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 02:32:59,799 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 2 states. [2018-11-10 02:32:59,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:32:59,818 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2018-11-10 02:32:59,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 02:32:59,819 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2018-11-10 02:32:59,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:32:59,825 INFO L225 Difference]: With dead ends: 121 [2018-11-10 02:32:59,826 INFO L226 Difference]: Without dead ends: 65 [2018-11-10 02:32:59,828 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 [2018-11-10 02:32:59,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-10 02:32:59,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-11-10 02:32:59,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-10 02:32:59,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2018-11-10 02:32:59,857 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 31 [2018-11-10 02:32:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:32:59,859 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2018-11-10 02:32:59,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 02:32:59,859 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2018-11-10 02:32:59,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-10 02:32:59,860 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:32:59,861 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:32:59,861 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:32:59,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:32:59,861 INFO L82 PathProgramCache]: Analyzing trace with hash -352461802, now seen corresponding path program 1 times [2018-11-10 02:32:59,861 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:32:59,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:32:59,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:32:59,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:32:59,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:32:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:32:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:32:59,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 02:32:59,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 02:32:59,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 02:32:59,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 02:32:59,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 02:32:59,958 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 5 states. [2018-11-10 02:33:00,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:33:00,009 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2018-11-10 02:33:00,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 02:33:00,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-11-10 02:33:00,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:33:00,010 INFO L225 Difference]: With dead ends: 110 [2018-11-10 02:33:00,010 INFO L226 Difference]: Without dead ends: 71 [2018-11-10 02:33:00,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 02:33:00,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-10 02:33:00,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2018-11-10 02:33:00,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-10 02:33:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2018-11-10 02:33:00,019 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 33 [2018-11-10 02:33:00,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:33:00,019 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2018-11-10 02:33:00,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 02:33:00,019 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2018-11-10 02:33:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-10 02:33:00,020 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:33:00,020 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:33:00,020 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:33:00,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:33:00,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1584589396, now seen corresponding path program 1 times [2018-11-10 02:33:00,021 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:33:00,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:33:00,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:33:00,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:33:00,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:33:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:33:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-10 02:33:00,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 02:33:00,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 02:33:00,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 02:33:00,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 02:33:00,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 02:33:00,089 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 4 states. [2018-11-10 02:33:00,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:33:00,112 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2018-11-10 02:33:00,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 02:33:00,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-11-10 02:33:00,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:33:00,113 INFO L225 Difference]: With dead ends: 75 [2018-11-10 02:33:00,113 INFO L226 Difference]: Without dead ends: 71 [2018-11-10 02:33:00,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 02:33:00,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-10 02:33:00,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2018-11-10 02:33:00,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-10 02:33:00,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2018-11-10 02:33:00,119 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 48 [2018-11-10 02:33:00,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:33:00,120 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2018-11-10 02:33:00,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 02:33:00,120 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2018-11-10 02:33:00,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-10 02:33:00,121 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:33:00,121 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:33:00,121 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:33:00,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:33:00,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1383645999, now seen corresponding path program 1 times [2018-11-10 02:33:00,122 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:33:00,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:33:00,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:33:00,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:33:00,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:33:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:33:00,197 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-10 02:33:00,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 02:33:00,197 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 02:33:00,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:33:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:33:00,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:33:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-10 02:33:00,377 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 02:33:00,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-11-10 02:33:00,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 02:33:00,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 02:33:00,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-10 02:33:00,379 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 7 states. [2018-11-10 02:33:00,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:33:00,430 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2018-11-10 02:33:00,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 02:33:00,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2018-11-10 02:33:00,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:33:00,431 INFO L225 Difference]: With dead ends: 79 [2018-11-10 02:33:00,431 INFO L226 Difference]: Without dead ends: 75 [2018-11-10 02:33:00,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2018-11-10 02:33:00,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-11-10 02:33:00,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2018-11-10 02:33:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-11-10 02:33:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2018-11-10 02:33:00,438 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 64 [2018-11-10 02:33:00,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:33:00,438 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2018-11-10 02:33:00,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 02:33:00,439 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2018-11-10 02:33:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-11-10 02:33:00,440 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:33:00,440 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:33:00,441 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:33:00,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:33:00,441 INFO L82 PathProgramCache]: Analyzing trace with hash -547943758, now seen corresponding path program 2 times [2018-11-10 02:33:00,441 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:33:00,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:33:00,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:33:00,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:33:00,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:33:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:33:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-10 02:33:00,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 02:33:00,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-10 02:33:00,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 02:33:00,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 02:33:00,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-10 02:33:00,543 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 6 states. [2018-11-10 02:33:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:33:00,672 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2018-11-10 02:33:00,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 02:33:00,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-11-10 02:33:00,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:33:00,675 INFO L225 Difference]: With dead ends: 105 [2018-11-10 02:33:00,675 INFO L226 Difference]: Without dead ends: 101 [2018-11-10 02:33:00,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-10 02:33:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-11-10 02:33:00,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 75. [2018-11-10 02:33:00,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-10 02:33:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2018-11-10 02:33:00,683 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 80 [2018-11-10 02:33:00,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:33:00,684 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2018-11-10 02:33:00,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 02:33:00,684 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2018-11-10 02:33:00,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-10 02:33:00,685 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:33:00,685 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:33:00,686 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:33:00,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:33:00,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1314730547, now seen corresponding path program 1 times [2018-11-10 02:33:00,686 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:33:00,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:33:00,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:33:00,687 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 02:33:00,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:33:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:33:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-10 02:33:00,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 02:33:00,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-10 02:33:00,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 02:33:00,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 02:33:00,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-11-10 02:33:00,899 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand 11 states. [2018-11-10 02:33:01,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:33:01,125 INFO L93 Difference]: Finished difference Result 119 states and 130 transitions. [2018-11-10 02:33:01,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 02:33:01,125 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2018-11-10 02:33:01,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:33:01,126 INFO L225 Difference]: With dead ends: 119 [2018-11-10 02:33:01,126 INFO L226 Difference]: Without dead ends: 81 [2018-11-10 02:33:01,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-11-10 02:33:01,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-11-10 02:33:01,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2018-11-10 02:33:01,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-10 02:33:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2018-11-10 02:33:01,132 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 87 [2018-11-10 02:33:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:33:01,133 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2018-11-10 02:33:01,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 02:33:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2018-11-10 02:33:01,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-10 02:33:01,134 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:33:01,135 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:33:01,135 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:33:01,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:33:01,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1067740789, now seen corresponding path program 1 times [2018-11-10 02:33:01,135 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:33:01,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:33:01,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:33:01,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:33:01,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:33:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:33:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-10 02:33:01,843 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 02:33:01,844 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 02:33:01,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:33:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:33:01,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:33:01,910 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-10 02:33:01,911 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:01,913 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:01,914 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-10 02:33:02,069 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-10 02:33:02,086 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-11-10 02:33:02,086 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:46, output treesize:43 [2018-11-10 02:33:02,301 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 02:33:02,302 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 14067 column 44: unknown constant v_DerPreprocessor_1 at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:221) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript$DiffTransformer.checkOrAddAxiom(DiffWrapperScript.java:164) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript$DiffTransformer.convertApplicationTerm(DiffWrapperScript.java:174) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:320) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:253) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:112) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.assertTerm(ManagedScript.java:136) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:82) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:823) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) 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) [2018-11-10 02:33:02,304 INFO L168 Benchmark]: Toolchain (without parser) took 3452.30 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 225.4 MB). Free memory was 956.5 MB in the beginning and 1.0 GB in the end (delta: -76.7 MB). Peak memory consumption was 148.8 MB. Max. memory is 11.5 GB. [2018-11-10 02:33:02,306 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 02:33:02,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.62 ms. Allocated memory is still 1.0 GB. Free memory was 956.5 MB in the beginning and 929.6 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-11-10 02:33:02,306 INFO L168 Benchmark]: Boogie Preprocessor took 83.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 929.6 MB in the beginning and 1.1 GB in the end (delta: -211.4 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-11-10 02:33:02,307 INFO L168 Benchmark]: RCFGBuilder took 370.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 11.5 GB. [2018-11-10 02:33:02,307 INFO L168 Benchmark]: TraceAbstraction took 2701.71 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 56.1 MB). Peak memory consumption was 134.7 MB. Max. memory is 11.5 GB. [2018-11-10 02:33:02,310 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 294.62 ms. Allocated memory is still 1.0 GB. Free memory was 956.5 MB in the beginning and 929.6 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 83.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 929.6 MB in the beginning and 1.1 GB in the end (delta: -211.4 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 370.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2701.71 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 56.1 MB). Peak memory consumption was 134.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 14067 column 44: unknown constant v_DerPreprocessor_1 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 14067 column 44: unknown constant v_DerPreprocessor_1: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$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 [2018-11-10 02:33:03,772 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 02:33:03,773 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 02:33:03,781 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 02:33:03,781 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 02:33:03,781 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 02:33:03,782 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 02:33:03,783 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 02:33:03,784 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 02:33:03,785 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 02:33:03,786 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 02:33:03,786 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 02:33:03,787 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 02:33:03,787 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 02:33:03,788 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 02:33:03,789 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 02:33:03,789 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 02:33:03,790 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 02:33:03,792 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 02:33:03,793 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 02:33:03,794 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 02:33:03,794 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 02:33:03,796 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 02:33:03,796 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 02:33:03,797 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 02:33:03,797 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 02:33:03,798 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 02:33:03,799 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 02:33:03,799 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 02:33:03,800 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 02:33:03,800 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 02:33:03,801 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 02:33:03,801 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 02:33:03,801 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 02:33:03,802 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 02:33:03,802 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 02:33:03,802 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-10 02:33:03,813 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 02:33:03,813 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 02:33:03,814 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 02:33:03,814 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 02:33:03,814 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 02:33:03,815 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 02:33:03,815 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 02:33:03,815 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 02:33:03,815 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 02:33:03,815 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 02:33:03,815 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 02:33:03,816 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 02:33:03,816 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 02:33:03,816 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 02:33:03,816 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 02:33:03,816 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 02:33:03,816 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 02:33:03,816 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 02:33:03,816 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 02:33:03,817 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 02:33:03,817 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 02:33:03,817 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 02:33:03,817 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 02:33:03,817 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 02:33:03,817 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 02:33:03,817 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 02:33:03,818 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 02:33:03,818 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-10 02:33:03,818 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 02:33:03,818 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 02:33:03,818 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 02:33:03,818 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_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 590f2fd0a15702fbce6a9c41b648e01dde5bd93d [2018-11-10 02:33:03,849 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 02:33:03,858 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 02:33:03,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 02:33:03,862 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 02:33:03,863 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 02:33:03,863 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/../../sv-benchmarks/c/list-simple/sll2c_remove_all_true-unreach-call_true-valid-memsafety.i [2018-11-10 02:33:03,909 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/data/fd27fbf80/ec0f12826a7448a88da513e4ab04cecc/FLAGa1d9ea959 [2018-11-10 02:33:04,241 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 02:33:04,242 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/sv-benchmarks/c/list-simple/sll2c_remove_all_true-unreach-call_true-valid-memsafety.i [2018-11-10 02:33:04,249 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/data/fd27fbf80/ec0f12826a7448a88da513e4ab04cecc/FLAGa1d9ea959 [2018-11-10 02:33:04,257 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/data/fd27fbf80/ec0f12826a7448a88da513e4ab04cecc [2018-11-10 02:33:04,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 02:33:04,260 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 02:33:04,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 02:33:04,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 02:33:04,264 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 02:33:04,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:33:04" (1/1) ... [2018-11-10 02:33:04,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c654d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:33:04, skipping insertion in model container [2018-11-10 02:33:04,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:33:04" (1/1) ... [2018-11-10 02:33:04,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 02:33:04,306 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 02:33:04,521 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 02:33:04,531 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 02:33:04,566 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 02:33:04,603 INFO L193 MainTranslator]: Completed translation [2018-11-10 02:33:04,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:33:04 WrapperNode [2018-11-10 02:33:04,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 02:33:04,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 02:33:04,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 02:33:04,604 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 02:33:04,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:33:04" (1/1) ... [2018-11-10 02:33:04,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:33:04" (1/1) ... [2018-11-10 02:33:04,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:33:04" (1/1) ... [2018-11-10 02:33:04,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:33:04" (1/1) ... [2018-11-10 02:33:04,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:33:04" (1/1) ... [2018-11-10 02:33:04,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:33:04" (1/1) ... [2018-11-10 02:33:04,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:33:04" (1/1) ... [2018-11-10 02:33:04,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 02:33:04,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 02:33:04,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 02:33:04,680 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 02:33:04,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:33:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 02:33:04,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 02:33:04,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 02:33:04,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-10 02:33:04,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-10 02:33:04,712 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-10 02:33:04,713 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-10 02:33:04,713 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2018-11-10 02:33:04,713 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_remove_first [2018-11-10 02:33:04,713 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 02:33:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 02:33:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-10 02:33:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-10 02:33:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-10 02:33:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-10 02:33:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-10 02:33:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-10 02:33:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-10 02:33:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-10 02:33:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-10 02:33:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-10 02:33:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-10 02:33:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-10 02:33:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-10 02:33:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-10 02:33:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-10 02:33:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-10 02:33:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-10 02:33:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-10 02:33:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-10 02:33:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-10 02:33:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-10 02:33:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-10 02:33:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-10 02:33:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-10 02:33:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-10 02:33:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-10 02:33:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-10 02:33:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-10 02:33:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-10 02:33:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-10 02:33:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-10 02:33:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-10 02:33:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-10 02:33:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-10 02:33:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-10 02:33:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-10 02:33:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-10 02:33:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-10 02:33:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-10 02:33:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-10 02:33:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-10 02:33:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-10 02:33:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-10 02:33:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-10 02:33:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-10 02:33:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-10 02:33:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-10 02:33:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-10 02:33:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-10 02:33:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-10 02:33:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-10 02:33:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-10 02:33:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-10 02:33:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-10 02:33:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-10 02:33:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-10 02:33:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-10 02:33:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-10 02:33:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-10 02:33:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-10 02:33:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-10 02:33:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-10 02:33:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-10 02:33:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-10 02:33:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-10 02:33:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 02:33:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-10 02:33:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-10 02:33:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-10 02:33:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-10 02:33:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-10 02:33:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-10 02:33:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-10 02:33:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-10 02:33:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-10 02:33:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-10 02:33:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-10 02:33:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-10 02:33:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-10 02:33:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-10 02:33:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-10 02:33:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-10 02:33:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-10 02:33:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-10 02:33:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-10 02:33:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-10 02:33:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-10 02:33:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-10 02:33:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-10 02:33:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-10 02:33:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-10 02:33:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-10 02:33:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-10 02:33:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-10 02:33:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-10 02:33:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-10 02:33:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-10 02:33:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-10 02:33:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-10 02:33:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-10 02:33:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-10 02:33:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-10 02:33:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-10 02:33:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-10 02:33:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-10 02:33:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-10 02:33:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 02:33:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-10 02:33:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-10 02:33:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2018-11-10 02:33:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_remove_first [2018-11-10 02:33:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-10 02:33:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 02:33:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 02:33:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 02:33:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 02:33:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-10 02:33:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-10 02:33:05,104 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 02:33:05,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:33:05 BoogieIcfgContainer [2018-11-10 02:33:05,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 02:33:05,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 02:33:05,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 02:33:05,107 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 02:33:05,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 02:33:04" (1/3) ... [2018-11-10 02:33:05,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc2f76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:33:05, skipping insertion in model container [2018-11-10 02:33:05,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:33:04" (2/3) ... [2018-11-10 02:33:05,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc2f76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:33:05, skipping insertion in model container [2018-11-10 02:33:05,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:33:05" (3/3) ... [2018-11-10 02:33:05,110 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all_true-unreach-call_true-valid-memsafety.i [2018-11-10 02:33:05,116 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 02:33:05,121 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 02:33:05,130 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 02:33:05,151 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 02:33:05,151 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 02:33:05,151 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 02:33:05,151 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 02:33:05,151 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 02:33:05,152 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 02:33:05,152 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 02:33:05,152 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 02:33:05,152 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 02:33:05,163 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2018-11-10 02:33:05,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-10 02:33:05,169 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:33:05,169 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:33:05,171 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:33:05,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:33:05,175 INFO L82 PathProgramCache]: Analyzing trace with hash -663800797, now seen corresponding path program 1 times [2018-11-10 02:33:05,177 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 02:33:05,178 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 02:33:05,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:33:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:33:05,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:33:05,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:33:05,257 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 02:33:05,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 02:33:05,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 02:33:05,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 02:33:05,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 02:33:05,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 02:33:05,278 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 2 states. [2018-11-10 02:33:05,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:33:05,300 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2018-11-10 02:33:05,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 02:33:05,301 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2018-11-10 02:33:05,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:33:05,309 INFO L225 Difference]: With dead ends: 121 [2018-11-10 02:33:05,309 INFO L226 Difference]: Without dead ends: 65 [2018-11-10 02:33:05,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 02:33:05,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-10 02:33:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-11-10 02:33:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-10 02:33:05,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2018-11-10 02:33:05,338 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 31 [2018-11-10 02:33:05,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:33:05,339 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2018-11-10 02:33:05,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 02:33:05,339 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2018-11-10 02:33:05,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-10 02:33:05,341 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:33:05,341 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:33:05,341 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:33:05,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:33:05,341 INFO L82 PathProgramCache]: Analyzing trace with hash -352461802, now seen corresponding path program 1 times [2018-11-10 02:33:05,342 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 02:33:05,342 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 02:33:05,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:33:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:33:05,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:33:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:33:05,447 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 02:33:05,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 02:33:05,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 02:33:05,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 02:33:05,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 02:33:05,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 02:33:05,451 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 5 states. [2018-11-10 02:33:05,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:33:05,508 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2018-11-10 02:33:05,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 02:33:05,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-11-10 02:33:05,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:33:05,511 INFO L225 Difference]: With dead ends: 110 [2018-11-10 02:33:05,511 INFO L226 Difference]: Without dead ends: 71 [2018-11-10 02:33:05,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 02:33:05,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-10 02:33:05,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2018-11-10 02:33:05,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-10 02:33:05,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2018-11-10 02:33:05,520 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 33 [2018-11-10 02:33:05,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:33:05,521 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2018-11-10 02:33:05,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 02:33:05,521 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2018-11-10 02:33:05,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-10 02:33:05,522 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:33:05,522 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:33:05,523 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:33:05,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:33:05,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1584589396, now seen corresponding path program 1 times [2018-11-10 02:33:05,523 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 02:33:05,523 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 02:33:05,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:33:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:33:05,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:33:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-10 02:33:05,634 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 02:33:05,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 02:33:05,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 02:33:05,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 02:33:05,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 02:33:05,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 02:33:05,639 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 4 states. [2018-11-10 02:33:05,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:33:05,668 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2018-11-10 02:33:05,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 02:33:05,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-11-10 02:33:05,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:33:05,669 INFO L225 Difference]: With dead ends: 75 [2018-11-10 02:33:05,669 INFO L226 Difference]: Without dead ends: 71 [2018-11-10 02:33:05,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 02:33:05,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-10 02:33:05,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2018-11-10 02:33:05,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-10 02:33:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2018-11-10 02:33:05,677 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 48 [2018-11-10 02:33:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:33:05,677 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2018-11-10 02:33:05,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 02:33:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2018-11-10 02:33:05,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-10 02:33:05,679 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:33:05,679 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:33:05,679 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:33:05,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:33:05,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1383645999, now seen corresponding path program 1 times [2018-11-10 02:33:05,680 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 02:33:05,680 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 02:33:05,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:33:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:33:05,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:33:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-10 02:33:05,820 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 02:33:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-10 02:33:05,884 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 02:33:05,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-10 02:33:05,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 02:33:05,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 02:33:05,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-10 02:33:05,885 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 8 states. [2018-11-10 02:33:05,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:33:05,954 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2018-11-10 02:33:05,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 02:33:05,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2018-11-10 02:33:05,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:33:05,956 INFO L225 Difference]: With dead ends: 79 [2018-11-10 02:33:05,956 INFO L226 Difference]: Without dead ends: 75 [2018-11-10 02:33:05,957 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-11-10 02:33:05,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-11-10 02:33:05,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2018-11-10 02:33:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-11-10 02:33:05,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2018-11-10 02:33:05,965 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 64 [2018-11-10 02:33:05,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:33:05,965 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2018-11-10 02:33:05,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 02:33:05,966 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2018-11-10 02:33:05,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-11-10 02:33:05,968 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:33:05,968 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:33:05,969 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:33:05,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:33:05,969 INFO L82 PathProgramCache]: Analyzing trace with hash -547943758, now seen corresponding path program 2 times [2018-11-10 02:33:05,969 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 02:33:05,970 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/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 [2018-11-10 02:33:05,987 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-10 02:33:06,102 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 02:33:06,102 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 02:33:06,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:33:06,190 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-10 02:33:06,194 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 [2018-11-10 02:33:06,194 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:06,198 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:06,215 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 [2018-11-10 02:33:06,218 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 [2018-11-10 02:33:06,219 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:06,222 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:06,233 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:06,233 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2018-11-10 02:33:06,263 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 [2018-11-10 02:33:06,268 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 [2018-11-10 02:33:06,268 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:06,271 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:06,281 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 [2018-11-10 02:33:06,284 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 [2018-11-10 02:33:06,284 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:06,294 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:06,298 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:06,298 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-11-10 02:33:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-10 02:33:06,325 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 02:33:06,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 02:33:06,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 02:33:06,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 02:33:06,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 02:33:06,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-10 02:33:06,328 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 7 states. [2018-11-10 02:33:06,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:33:06,567 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2018-11-10 02:33:06,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 02:33:06,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2018-11-10 02:33:06,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:33:06,569 INFO L225 Difference]: With dead ends: 105 [2018-11-10 02:33:06,569 INFO L226 Difference]: Without dead ends: 101 [2018-11-10 02:33:06,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-10 02:33:06,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-11-10 02:33:06,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 75. [2018-11-10 02:33:06,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-10 02:33:06,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2018-11-10 02:33:06,577 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 80 [2018-11-10 02:33:06,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:33:06,578 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2018-11-10 02:33:06,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 02:33:06,578 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2018-11-10 02:33:06,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-10 02:33:06,579 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:33:06,579 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:33:06,579 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:33:06,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:33:06,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1314730547, now seen corresponding path program 1 times [2018-11-10 02:33:06,579 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 02:33:06,580 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 02:33:06,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 02:33:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:33:06,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:33:06,888 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 65 treesize of output 55 [2018-11-10 02:33:06,893 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 51 treesize of output 38 [2018-11-10 02:33:06,894 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:06,930 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 27 [2018-11-10 02:33:06,931 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:06,969 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 38 treesize of output 31 [2018-11-10 02:33:06,970 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:07,011 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 02:33:07,084 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 27 treesize of output 27 [2018-11-10 02:33:07,089 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 23 treesize of output 18 [2018-11-10 02:33:07,090 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:07,120 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 18 treesize of output 13 [2018-11-10 02:33:07,121 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:07,144 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2018-11-10 02:33:07,144 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:07,154 INFO L267 ElimStorePlain]: Start of recursive call 6: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:07,158 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 21 [2018-11-10 02:33:07,161 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 12 treesize of output 4 [2018-11-10 02:33:07,162 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:07,170 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 5 treesize of output 1 [2018-11-10 02:33:07,171 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:07,175 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:07,221 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 65 treesize of output 63 [2018-11-10 02:33:07,225 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 59 treesize of output 52 [2018-11-10 02:33:07,226 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:07,282 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 51 treesize of output 43 [2018-11-10 02:33:07,283 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2018-11-10 02:33:07,328 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 44 treesize of output 35 [2018-11-10 02:33:07,329 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:07,348 INFO L267 ElimStorePlain]: Start of recursive call 13: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:07,387 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 35 treesize of output 27 [2018-11-10 02:33:07,392 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 23 treesize of output 16 [2018-11-10 02:33:07,392 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:07,420 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 16 treesize of output 9 [2018-11-10 02:33:07,421 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:07,437 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2018-11-10 02:33:07,438 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:07,448 INFO L267 ElimStorePlain]: Start of recursive call 17: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 02:33:07,469 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-10 02:33:07,470 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 8 variables, input treesize:131, output treesize:9 [2018-11-10 02:33:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-10 02:33:07,494 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 02:33:07,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 02:33:07,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-10 02:33:07,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 02:33:07,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 02:33:07,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-11-10 02:33:07,496 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand 11 states. [2018-11-10 02:33:07,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:33:07,987 INFO L93 Difference]: Finished difference Result 119 states and 130 transitions. [2018-11-10 02:33:07,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 02:33:07,987 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2018-11-10 02:33:07,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:33:07,988 INFO L225 Difference]: With dead ends: 119 [2018-11-10 02:33:07,988 INFO L226 Difference]: Without dead ends: 81 [2018-11-10 02:33:07,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-11-10 02:33:07,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-11-10 02:33:07,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2018-11-10 02:33:07,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-10 02:33:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2018-11-10 02:33:07,994 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 87 [2018-11-10 02:33:07,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:33:07,995 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2018-11-10 02:33:07,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 02:33:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2018-11-10 02:33:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-10 02:33:07,997 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:33:07,998 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:33:07,998 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:33:07,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:33:07,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1067740789, now seen corresponding path program 1 times [2018-11-10 02:33:07,998 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 02:33:07,998 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 02:33:08,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:33:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:33:08,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:33:08,178 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 [2018-11-10 02:33:08,178 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:08,182 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:08,182 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-10 02:33:08,366 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 [2018-11-10 02:33:08,368 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 [2018-11-10 02:33:08,369 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:08,371 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:08,378 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:08,379 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2018-11-10 02:33:08,433 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:08,439 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 32 treesize of output 36 [2018-11-10 02:33:08,443 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 [2018-11-10 02:33:08,443 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:08,449 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:08,455 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 02:33:08,456 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:27 [2018-11-10 02:33:08,556 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:08,557 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:08,557 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-10 02:33:08,558 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:08,567 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 02:33:08,568 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:30 [2018-11-10 02:33:08,643 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:08,667 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 59 [2018-11-10 02:33:08,672 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 49 treesize of output 47 [2018-11-10 02:33:08,672 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:08,722 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:08,738 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 [2018-11-10 02:33:08,740 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 [2018-11-10 02:33:08,741 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:08,743 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:08,754 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 02:33:08,754 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:49, output treesize:46 [2018-11-10 02:33:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-10 02:33:09,216 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 02:33:10,188 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 64 treesize of output 42 [2018-11-10 02:33:10,191 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 [2018-11-10 02:33:10,192 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:10,203 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:33:10,212 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 41 treesize of output 37 [2018-11-10 02:33:10,243 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 9 treesize of output 8 [2018-11-10 02:33:10,244 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:10,256 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:33:10,259 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 16 [2018-11-10 02:33:10,261 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 [2018-11-10 02:33:10,262 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:10,269 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 [2018-11-10 02:33:10,269 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:10,270 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:10,274 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:10,278 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:10,284 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 02:33:10,284 INFO L202 ElimStorePlain]: Needed 8 recursive calls to eliminate 4 variables, input treesize:74, output treesize:14 [2018-11-10 02:33:10,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 02:33:10,350 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 02:33:10,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:33:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:33:10,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:33:10,406 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 [2018-11-10 02:33:10,406 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:10,407 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:10,408 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-10 02:33:11,070 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 [2018-11-10 02:33:11,072 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 [2018-11-10 02:33:11,072 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:11,074 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:11,079 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:11,080 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2018-11-10 02:33:11,250 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:11,259 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 41 treesize of output 45 [2018-11-10 02:33:11,262 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 [2018-11-10 02:33:11,262 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:11,273 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:11,281 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 02:33:11,281 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:33 [2018-11-10 02:33:11,535 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:11,536 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:11,537 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:11,538 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2018-11-10 02:33:11,538 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:11,549 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 02:33:11,549 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:32 [2018-11-10 02:33:11,707 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 0 case distinctions, treesize of input 39 treesize of output 43 [2018-11-10 02:33:11,710 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2018-11-10 02:33:11,710 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:11,725 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:11,745 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 [2018-11-10 02:33:11,748 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 [2018-11-10 02:33:11,748 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:11,751 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:11,767 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 02:33:11,767 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:54, output treesize:68 [2018-11-10 02:33:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-10 02:33:11,959 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 02:33:12,634 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 42 [2018-11-10 02:33:12,637 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-11-10 02:33:12,638 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:12,650 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:33:12,663 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 41 treesize of output 37 [2018-11-10 02:33:12,700 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 9 treesize of output 8 [2018-11-10 02:33:12,700 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:12,713 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:33:12,716 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 16 [2018-11-10 02:33:12,718 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 [2018-11-10 02:33:12,718 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:12,725 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 [2018-11-10 02:33:12,725 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:12,727 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:12,731 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:12,736 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:12,743 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 02:33:12,744 INFO L202 ElimStorePlain]: Needed 8 recursive calls to eliminate 6 variables, input treesize:80, output treesize:16 [2018-11-10 02:33:12,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 02:33:12,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 44 [2018-11-10 02:33:12,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-10 02:33:12,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-10 02:33:12,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=2826, Unknown=0, NotChecked=0, Total=2970 [2018-11-10 02:33:12,892 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 44 states. [2018-11-10 02:33:17,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:33:17,122 INFO L93 Difference]: Finished difference Result 137 states and 150 transitions. [2018-11-10 02:33:17,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-10 02:33:17,123 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 93 [2018-11-10 02:33:17,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:33:17,124 INFO L225 Difference]: With dead ends: 137 [2018-11-10 02:33:17,124 INFO L226 Difference]: Without dead ends: 95 [2018-11-10 02:33:17,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=355, Invalid=5497, Unknown=0, NotChecked=0, Total=5852 [2018-11-10 02:33:17,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-11-10 02:33:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2018-11-10 02:33:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-11-10 02:33:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2018-11-10 02:33:17,137 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 93 [2018-11-10 02:33:17,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:33:17,137 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2018-11-10 02:33:17,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-10 02:33:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2018-11-10 02:33:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-10 02:33:17,139 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:33:17,139 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:33:17,139 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:33:17,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:33:17,139 INFO L82 PathProgramCache]: Analyzing trace with hash 407895276, now seen corresponding path program 1 times [2018-11-10 02:33:17,140 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 02:33:17,140 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 02:33:17,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:33:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:33:17,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:33:17,332 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 6 treesize of output 5 [2018-11-10 02:33:17,332 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:17,336 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:17,336 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-10 02:33:17,551 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 [2018-11-10 02:33:17,556 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 [2018-11-10 02:33:17,556 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:17,562 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:17,577 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:17,577 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2018-11-10 02:33:17,666 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:17,672 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 41 treesize of output 45 [2018-11-10 02:33:17,674 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 [2018-11-10 02:33:17,675 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:17,684 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:17,696 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 02:33:17,696 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:44, output treesize:36 [2018-11-10 02:33:17,819 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:17,820 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:17,821 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:17,821 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2018-11-10 02:33:17,822 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:17,834 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 02:33:17,834 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:46, output treesize:38 [2018-11-10 02:33:17,891 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 [2018-11-10 02:33:17,893 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 [2018-11-10 02:33:17,893 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:17,896 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:17,917 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:17,922 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 52 [2018-11-10 02:33:17,925 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 [2018-11-10 02:33:17,925 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 02:33:17,936 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:33:17,955 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 02:33:17,955 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:57, output treesize:58 [2018-11-10 02:33:20,029 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:20,029 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:33:20,067 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:20,167 INFO L303 Elim1Store]: Index analysis took 146 ms [2018-11-10 02:33:20,168 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 348 treesize of output 279 [2018-11-10 02:33:20,195 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 0 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 75 [2018-11-10 02:33:20,195 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-10 02:33:20,389 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:20,392 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:20,413 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:20,420 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:20,421 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 245 treesize of output 232 [2018-11-10 02:33:20,479 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 248 treesize of output 224 [2018-11-10 02:33:20,481 INFO L267 ElimStorePlain]: Start of recursive call 5: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2018-11-10 02:33:21,321 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2018-11-10 02:33:21,336 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:21,339 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:21,370 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:21,381 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:33:21,382 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 249 treesize of output 228 [2018-11-10 02:33:21,435 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 250 treesize of output 224 [2018-11-10 02:33:21,437 INFO L267 ElimStorePlain]: Start of recursive call 7: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2018-11-10 02:33:22,130 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2018-11-10 02:33:29,801 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 8 dim-0 vars, and 6 xjuncts. [2018-11-10 02:34:15,050 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,055 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,060 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,108 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 0 case distinctions, treesize of input 263 treesize of output 231 [2018-11-10 02:34:15,114 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 36 treesize of output 35 [2018-11-10 02:34:15,114 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,171 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,172 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,173 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,188 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 148 [2018-11-10 02:34:15,195 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 120 treesize of output 103 [2018-11-10 02:34:15,195 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,223 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,254 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,272 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,278 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,328 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 159 [2018-11-10 02:34:15,333 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 28 treesize of output 27 [2018-11-10 02:34:15,333 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,391 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,393 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,394 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,411 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 109 [2018-11-10 02:34:15,419 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 89 treesize of output 72 [2018-11-10 02:34:15,419 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,443 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,486 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,504 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,508 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,512 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,566 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 0 case distinctions, treesize of input 267 treesize of output 235 [2018-11-10 02:34:15,573 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 36 treesize of output 35 [2018-11-10 02:34:15,573 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,642 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,644 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,645 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,662 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 135 [2018-11-10 02:34:15,670 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 107 treesize of output 92 [2018-11-10 02:34:15,670 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,697 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,730 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,740 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,742 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,744 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,769 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 167 [2018-11-10 02:34:15,777 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 28 treesize of output 27 [2018-11-10 02:34:15,777 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,830 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,832 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,833 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:15,846 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 108 [2018-11-10 02:34:15,855 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 88 treesize of output 71 [2018-11-10 02:34:15,855 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,879 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,916 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:34:15,945 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 0 case distinctions, treesize of input 191 treesize of output 139 [2018-11-10 02:34:15,950 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 28 treesize of output 27 [2018-11-10 02:34:15,950 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-10 02:34:16,006 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:16,007 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:16,028 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 128 [2018-11-10 02:34:16,034 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 108 treesize of output 87 [2018-11-10 02:34:16,035 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-11-10 02:34:16,067 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:34:16,099 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:34:16,111 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:16,170 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 0 case distinctions, treesize of input 187 treesize of output 147 [2018-11-10 02:34:16,175 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 28 treesize of output 27 [2018-11-10 02:34:16,175 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-11-10 02:34:16,226 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:16,228 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:16,245 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 109 [2018-11-10 02:34:16,251 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 89 treesize of output 72 [2018-11-10 02:34:16,251 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2018-11-10 02:34:16,271 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:34:16,302 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:34:20,705 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:20,739 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:20,776 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:20,880 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:21,039 INFO L303 Elim1Store]: Index analysis took 395 ms [2018-11-10 02:34:21,040 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 348 treesize of output 339 [2018-11-10 02:34:21,049 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 44 treesize of output 43 [2018-11-10 02:34:21,049 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-11-10 02:34:21,169 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:21,174 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:21,185 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:21,207 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:21,208 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 249 treesize of output 247 [2018-11-10 02:34:21,274 INFO L477 Elim1Store]: Elim1 applied some 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 236 treesize of output 220 [2018-11-10 02:34:21,275 INFO L267 ElimStorePlain]: Start of recursive call 35: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-11-10 02:34:21,395 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:34:21,451 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:34:23,182 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:34:23,185 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:23,254 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:23,274 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 175 [2018-11-10 02:34:23,290 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 0 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 63 [2018-11-10 02:34:23,290 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 2 xjuncts. [2018-11-10 02:34:23,356 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:23,357 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:23,363 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:23,368 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:23,369 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 135 [2018-11-10 02:34:23,413 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 143 treesize of output 131 [2018-11-10 02:34:23,416 INFO L267 ElimStorePlain]: Start of recursive call 39: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2018-11-10 02:34:23,568 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2018-11-10 02:34:23,578 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:23,580 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:23,588 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:23,592 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:34:23,592 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 135 [2018-11-10 02:34:23,637 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 135 [2018-11-10 02:34:23,639 INFO L267 ElimStorePlain]: Start of recursive call 41: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2018-11-10 02:34:23,822 INFO L267 ElimStorePlain]: Start of recursive call 40: 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2018-11-10 02:34:24,230 INFO L267 ElimStorePlain]: Start of recursive call 36: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 8 dim-0 vars, and 6 xjuncts. [2018-11-10 02:34:26,102 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-2 vars, End of recursive call: 22 dim-0 vars, and 12 xjuncts. [2018-11-10 02:34:26,102 INFO L202 ElimStorePlain]: Needed 41 recursive calls to eliminate 6 variables, input treesize:697, output treesize:1395 [2018-11-10 02:34:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-10 02:34:27,266 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 02:34:29,003 WARN L179 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2018-11-10 02:34:29,221 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-11-10 02:34:29,603 WARN L179 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-11-10 02:34:29,877 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-11-10 02:34:36,584 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-11-10 02:34:37,560 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2018-11-10 02:34:38,676 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-11-10 02:34:38,930 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-10 02:34:38,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 02:34:38,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 23] total 59 [2018-11-10 02:34:38,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-11-10 02:34:38,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-11-10 02:34:38,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=3132, Unknown=0, NotChecked=0, Total=3422 [2018-11-10 02:34:38,934 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand 59 states. [2018-11-10 02:34:46,604 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-11-10 02:34:47,817 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2018-11-10 02:35:52,486 WARN L179 SmtUtils]: Spent 31.93 s on a formula simplification. DAG size of input: 244 DAG size of output: 224 [2018-11-10 02:36:04,307 WARN L179 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-11-10 02:36:06,387 WARN L179 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2018-11-10 02:36:09,308 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-11-10 02:36:17,723 WARN L179 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 38 [2018-11-10 02:36:27,047 WARN L179 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 44 [2018-11-10 02:36:33,318 WARN L179 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 35 [2018-11-10 02:36:58,763 WARN L179 SmtUtils]: Spent 16.57 s on a formula simplification. DAG size of input: 185 DAG size of output: 171 [2018-11-10 02:37:20,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:37:20,449 INFO L93 Difference]: Finished difference Result 179 states and 200 transitions. [2018-11-10 02:37:20,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-10 02:37:20,452 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 106 [2018-11-10 02:37:20,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:37:20,453 INFO L225 Difference]: With dead ends: 179 [2018-11-10 02:37:20,453 INFO L226 Difference]: Without dead ends: 137 [2018-11-10 02:37:20,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 133.8s TimeCoverageRelationStatistics Valid=986, Invalid=8906, Unknown=8, NotChecked=0, Total=9900 [2018-11-10 02:37:20,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-11-10 02:37:20,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 126. [2018-11-10 02:37:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-11-10 02:37:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2018-11-10 02:37:20,465 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 106 [2018-11-10 02:37:20,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:37:20,465 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2018-11-10 02:37:20,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-11-10 02:37:20,465 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2018-11-10 02:37:20,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-10 02:37:20,466 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:37:20,466 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:37:20,467 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:37:20,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:37:20,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1877780959, now seen corresponding path program 2 times [2018-11-10 02:37:20,467 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 02:37:20,467 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 02:37:20,480 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-10 02:37:20,590 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 02:37:20,590 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 02:37:20,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:37:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-11-10 02:37:20,663 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 02:37:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-11-10 02:37:20,770 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 02:37:20,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-11-10 02:37:20,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 02:37:20,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 02:37:20,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-10 02:37:20,771 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand 9 states. [2018-11-10 02:37:20,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:37:20,864 INFO L93 Difference]: Finished difference Result 198 states and 218 transitions. [2018-11-10 02:37:20,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 02:37:20,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2018-11-10 02:37:20,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 02:37:20,866 INFO L225 Difference]: With dead ends: 198 [2018-11-10 02:37:20,866 INFO L226 Difference]: Without dead ends: 111 [2018-11-10 02:37:20,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-10 02:37:20,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-11-10 02:37:20,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-11-10 02:37:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-11-10 02:37:20,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2018-11-10 02:37:20,875 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 108 [2018-11-10 02:37:20,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 02:37:20,875 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2018-11-10 02:37:20,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 02:37:20,875 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2018-11-10 02:37:20,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-10 02:37:20,876 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 02:37:20,876 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 02:37:20,876 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 02:37:20,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:37:20,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1758182612, now seen corresponding path program 2 times [2018-11-10 02:37:20,876 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 02:37:20,876 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f0243554-e1ee-4c79-9356-b0187ae979e2/bin-2019/uautomizer/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 [2018-11-10 02:37:20,893 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 02:37:21,078 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 02:37:21,078 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 02:37:21,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:37:21,134 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 [2018-11-10 02:37:21,134 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,143 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,143 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-10 02:37:21,408 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 [2018-11-10 02:37:21,410 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 [2018-11-10 02:37:21,410 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,413 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,436 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 [2018-11-10 02:37:21,439 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 [2018-11-10 02:37:21,439 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,442 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,457 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,458 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:42, output treesize:34 [2018-11-10 02:37:21,565 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:37:21,573 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:37:21,577 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 60 treesize of output 73 [2018-11-10 02:37:21,581 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 24 [2018-11-10 02:37:21,582 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,597 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,619 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:37:21,627 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 27 treesize of output 28 [2018-11-10 02:37:21,630 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 [2018-11-10 02:37:21,630 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,640 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,657 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,657 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:70, output treesize:54 [2018-11-10 02:37:21,803 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:37:21,804 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:37:21,805 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:37:21,806 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2018-11-10 02:37:21,806 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,821 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,821 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:64, output treesize:56 [2018-11-10 02:37:21,891 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:37:21,893 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:37:21,904 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 71 [2018-11-10 02:37:21,908 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 [2018-11-10 02:37:21,908 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,923 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,957 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:37:21,967 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 51 [2018-11-10 02:37:21,970 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 [2018-11-10 02:37:21,970 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:21,982 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:37:22,018 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:37:22,018 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:75, output treesize:84 [2018-11-10 02:37:23,516 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 60 treesize of output 57 [2018-11-10 02:37:23,519 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 [2018-11-10 02:37:23,519 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:23,527 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:37:23,532 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 60 treesize of output 57 [2018-11-10 02:37:23,534 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 [2018-11-10 02:37:23,535 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:23,543 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:37:23,561 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-10 02:37:23,561 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:121, output treesize:113 [2018-11-10 02:37:23,684 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-10 02:37:23,684 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:23,689 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:37:23,689 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:279, output treesize:1 [2018-11-10 02:37:23,718 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 48 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-10 02:37:23,718 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 02:37:23,930 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-11-10 02:37:26,320 WARN L179 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-11-10 02:37:26,626 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-11-10 02:37:26,827 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-11-10 02:37:26,837 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-10 02:37:26,838 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:26,845 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:37:26,846 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:399, output treesize:1 [2018-11-10 02:37:28,438 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 129 [2018-11-10 02:37:28,452 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 [2018-11-10 02:37:28,452 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:28,591 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 128 treesize of output 122 [2018-11-10 02:37:29,180 WARN L179 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2018-11-10 02:37:29,186 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 115 treesize of output 114 [2018-11-10 02:37:29,186 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:29,195 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 162 [2018-11-10 02:37:29,195 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:29,667 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:37:29,673 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 162 treesize of output 166 [2018-11-10 02:37:29,673 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:29,679 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:37:29,686 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 114 treesize of output 118 [2018-11-10 02:37:29,687 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-10 02:37:30,385 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 162 treesize of output 216 [2018-11-10 02:37:30,386 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-10 02:37:52,583 WARN L179 SmtUtils]: Spent 22.17 s on a formula simplification. DAG size of input: 534 DAG size of output: 530 [2018-11-10 02:37:52,588 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:37:52,593 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:37:52,601 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:37:52,604 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:37:52,632 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 168 treesize of output 520 [2018-11-10 02:37:52,632 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-11-10 02:38:00,433 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:38:00,434 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:38:00,435 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 174 treesize of output 179 [2018-11-10 02:38:00,439 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:38:00,445 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 27 treesize of output 42 [2018-11-10 02:38:00,445 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-10 02:38:00,516 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:38:08,589 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 176 treesize of output 175 [2018-11-10 02:38:08,590 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-10 02:38:16,941 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:38:16,946 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:38:16,969 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 173 treesize of output 200 [2018-11-10 02:38:16,969 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-11-10 02:38:24,517 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 172 [2018-11-10 02:38:24,518 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-10 02:38:32,907 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:38:32,908 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:38:32,913 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:38:32,913 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 169 treesize of output 301 [2018-11-10 02:38:32,921 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:38:32,930 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 299 [2018-11-10 02:38:32,930 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-10 02:38:33,010 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 02:38:40,224 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:38:40,255 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 1 case distinctions, treesize of input 174 treesize of output 248 [2018-11-10 02:38:40,255 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-10 02:38:47,753 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 182 treesize of output 170 [2018-11-10 02:38:47,990 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2018-11-10 02:38:47,995 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:38:48,001 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:38:48,027 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 215 [2018-11-10 02:38:48,027 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 2 xjuncts. [2018-11-10 02:38:48,128 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:38:48,131 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:38:48,177 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 212 [2018-11-10 02:38:48,177 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 2 xjuncts. [2018-11-10 02:38:48,271 INFO L267 ElimStorePlain]: Start of recursive call 19: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 02:38:55,700 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:38:55,741 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 174 treesize of output 178 [2018-11-10 02:38:56,129 WARN L179 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2018-11-10 02:38:56,142 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:38:56,180 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 213 [2018-11-10 02:38:56,181 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 3 xjuncts. [2018-11-10 02:38:56,546 INFO L267 ElimStorePlain]: Start of recursive call 22: 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 02:39:02,860 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 02:39:02,906 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 177 treesize of output 175 [2018-11-10 02:39:03,863 WARN L179 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2018-11-10 02:39:03,868 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:39:03,876 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:39:03,905 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 211 [2018-11-10 02:39:03,906 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 2 xjuncts. [2018-11-10 02:39:04,177 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 02:39:04,421 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 02:39:04,421 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_prenex_74 term size 41 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.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.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) [2018-11-10 02:39:04,423 INFO L168 Benchmark]: Toolchain (without parser) took 360163.70 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 254.3 MB). Free memory was 947.9 MB in the beginning and 834.6 MB in the end (delta: 113.3 MB). Peak memory consumption was 435.0 MB. Max. memory is 11.5 GB. [2018-11-10 02:39:04,424 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 02:39:04,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.32 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 921.0 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-11-10 02:39:04,424 INFO L168 Benchmark]: Boogie Preprocessor took 76.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 921.0 MB in the beginning and 1.1 GB in the end (delta: -202.9 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2018-11-10 02:39:04,424 INFO L168 Benchmark]: RCFGBuilder took 424.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 11.5 GB. [2018-11-10 02:39:04,424 INFO L168 Benchmark]: TraceAbstraction took 359317.65 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 117.4 MB). Free memory was 1.1 GB in the beginning and 834.6 MB in the end (delta: 235.9 MB). Peak memory consumption was 420.8 MB. Max. memory is 11.5 GB. [2018-11-10 02:39:04,425 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 342.32 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 921.0 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 76.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 921.0 MB in the beginning and 1.1 GB in the end (delta: -202.9 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 424.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 359317.65 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 117.4 MB). Free memory was 1.1 GB in the beginning and 834.6 MB in the end (delta: 235.9 MB). Peak memory consumption was 420.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_prenex_74 term size 41 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_prenex_74 term size 41: 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...