./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/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 4aa4ae97046b46e050cb2478dec257c6a324dc09 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/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 4aa4ae97046b46e050cb2478dec257c6a324dc09 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_7 input size 19 context size 19 output size 19 --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 19:59:03,361 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 19:59:03,362 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 19:59:03,371 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 19:59:03,371 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 19:59:03,372 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 19:59:03,373 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 19:59:03,374 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 19:59:03,374 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 19:59:03,375 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 19:59:03,375 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 19:59:03,375 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 19:59:03,376 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 19:59:03,376 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 19:59:03,377 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 19:59:03,377 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 19:59:03,377 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 19:59:03,379 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 19:59:03,380 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 19:59:03,380 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 19:59:03,381 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 19:59:03,381 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 19:59:03,383 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 19:59:03,383 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 19:59:03,383 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 19:59:03,384 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 19:59:03,384 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 19:59:03,385 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 19:59:03,385 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 19:59:03,386 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 19:59:03,386 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 19:59:03,387 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 19:59:03,387 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 19:59:03,387 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 19:59:03,388 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 19:59:03,388 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 19:59:03,389 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-01 19:59:03,398 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 19:59:03,398 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 19:59:03,398 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 19:59:03,399 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 19:59:03,399 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 19:59:03,399 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 19:59:03,399 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 19:59:03,399 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 19:59:03,400 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 19:59:03,400 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 19:59:03,400 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 19:59:03,400 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 19:59:03,400 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 19:59:03,400 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 19:59:03,400 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 19:59:03,400 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 19:59:03,400 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 19:59:03,401 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 19:59:03,401 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 19:59:03,401 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 19:59:03,401 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 19:59:03,401 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 19:59:03,401 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 19:59:03,401 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 19:59:03,401 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 19:59:03,401 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 19:59:03,401 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 19:59:03,401 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 19:59:03,401 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 19:59:03,401 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 19:59:03,402 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_1e3145ec-9f68-44ac-9ba5-18314670d621/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 -> 4aa4ae97046b46e050cb2478dec257c6a324dc09 [2018-12-01 19:59:03,425 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 19:59:03,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 19:59:03,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 19:59:03,437 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 19:59:03,438 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 19:59:03,438 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-12-01 19:59:03,478 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/data/b79aa6387/12c5139a19014663a831a0e0b22094de/FLAGff4a84be2 [2018-12-01 19:59:03,943 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 19:59:03,943 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-12-01 19:59:03,952 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/data/b79aa6387/12c5139a19014663a831a0e0b22094de/FLAGff4a84be2 [2018-12-01 19:59:03,962 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/data/b79aa6387/12c5139a19014663a831a0e0b22094de [2018-12-01 19:59:03,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 19:59:03,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 19:59:03,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 19:59:03,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 19:59:03,970 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 19:59:03,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 07:59:03" (1/1) ... [2018-12-01 19:59:03,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b1aa1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:59:03, skipping insertion in model container [2018-12-01 19:59:03,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 07:59:03" (1/1) ... [2018-12-01 19:59:03,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 19:59:04,005 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 19:59:04,191 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 19:59:04,229 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 19:59:04,254 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 19:59:04,275 INFO L195 MainTranslator]: Completed translation [2018-12-01 19:59:04,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:59:04 WrapperNode [2018-12-01 19:59:04,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 19:59:04,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 19:59:04,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 19:59:04,276 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 19:59:04,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:59:04" (1/1) ... [2018-12-01 19:59:04,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:59:04" (1/1) ... [2018-12-01 19:59:04,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 19:59:04,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 19:59:04,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 19:59:04,294 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 19:59:04,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:59:04" (1/1) ... [2018-12-01 19:59:04,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:59:04" (1/1) ... [2018-12-01 19:59:04,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:59:04" (1/1) ... [2018-12-01 19:59:04,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:59:04" (1/1) ... [2018-12-01 19:59:04,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:59:04" (1/1) ... [2018-12-01 19:59:04,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:59:04" (1/1) ... [2018-12-01 19:59:04,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:59:04" (1/1) ... [2018-12-01 19:59:04,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 19:59:04,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 19:59:04,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 19:59:04,313 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 19:59:04,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:59:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/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 [2018-12-01 19:59:04,344 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-12-01 19:59:04,344 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-12-01 19:59:04,344 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-01 19:59:04,344 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-01 19:59:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 19:59:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 19:59:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-01 19:59:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-12-01 19:59:04,345 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-12-01 19:59:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 19:59:04,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 19:59:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 19:59:04,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 19:59:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-01 19:59:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-01 19:59:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 19:59:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-01 19:59:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-12-01 19:59:04,346 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-12-01 19:59:04,346 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2018-12-01 19:59:04,346 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2018-12-01 19:59:04,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 19:59:04,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 19:59:04,537 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 19:59:04,537 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-01 19:59:04,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 07:59:04 BoogieIcfgContainer [2018-12-01 19:59:04,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 19:59:04,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 19:59:04,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 19:59:04,540 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 19:59:04,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 07:59:03" (1/3) ... [2018-12-01 19:59:04,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a99a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 07:59:04, skipping insertion in model container [2018-12-01 19:59:04,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:59:04" (2/3) ... [2018-12-01 19:59:04,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a99a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 07:59:04, skipping insertion in model container [2018-12-01 19:59:04,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 07:59:04" (3/3) ... [2018-12-01 19:59:04,542 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-12-01 19:59:04,547 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 19:59:04,551 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 19:59:04,559 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 19:59:04,575 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 19:59:04,576 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 19:59:04,576 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 19:59:04,576 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 19:59:04,576 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 19:59:04,576 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 19:59:04,576 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 19:59:04,576 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 19:59:04,576 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 19:59:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2018-12-01 19:59:04,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-01 19:59:04,590 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 19:59:04,591 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 19:59:04,592 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 19:59:04,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:59:04,595 INFO L82 PathProgramCache]: Analyzing trace with hash 2094879456, now seen corresponding path program 1 times [2018-12-01 19:59:04,596 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:59:04,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:59:04,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:59:04,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:59:04,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:59:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:59:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:59:04,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 19:59:04,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 19:59:04,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 19:59:04,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 19:59:04,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 19:59:04,723 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2018-12-01 19:59:04,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:59:04,736 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2018-12-01 19:59:04,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 19:59:04,737 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2018-12-01 19:59:04,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 19:59:04,742 INFO L225 Difference]: With dead ends: 86 [2018-12-01 19:59:04,742 INFO L226 Difference]: Without dead ends: 36 [2018-12-01 19:59:04,744 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 19:59:04,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-01 19:59:04,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-01 19:59:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-01 19:59:04,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-12-01 19:59:04,765 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 30 [2018-12-01 19:59:04,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 19:59:04,765 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-12-01 19:59:04,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 19:59:04,765 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-12-01 19:59:04,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-01 19:59:04,766 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 19:59:04,766 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 19:59:04,766 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 19:59:04,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:59:04,766 INFO L82 PathProgramCache]: Analyzing trace with hash 2094870807, now seen corresponding path program 1 times [2018-12-01 19:59:04,766 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:59:04,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:59:04,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:59:04,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:59:04,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:59:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:59:04,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:59:04,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 19:59:04,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-01 19:59:04,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-01 19:59:04,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-01 19:59:04,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-12-01 19:59:04,878 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 10 states. [2018-12-01 19:59:04,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:59:04,972 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-12-01 19:59:04,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-01 19:59:04,972 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-12-01 19:59:04,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 19:59:04,973 INFO L225 Difference]: With dead ends: 43 [2018-12-01 19:59:04,973 INFO L226 Difference]: Without dead ends: 40 [2018-12-01 19:59:04,974 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-12-01 19:59:04,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-01 19:59:04,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-12-01 19:59:04,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-01 19:59:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2018-12-01 19:59:04,977 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 30 [2018-12-01 19:59:04,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 19:59:04,978 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2018-12-01 19:59:04,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-01 19:59:04,978 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2018-12-01 19:59:04,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-01 19:59:04,978 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 19:59:04,978 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 19:59:04,978 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 19:59:04,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:59:04,979 INFO L82 PathProgramCache]: Analyzing trace with hash 2094872481, now seen corresponding path program 1 times [2018-12-01 19:59:04,979 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:59:04,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:59:04,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:59:04,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:59:04,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:59:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:59:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:59:05,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 19:59:05,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 19:59:05,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 19:59:05,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 19:59:05,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-01 19:59:05,013 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2018-12-01 19:59:05,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:59:05,037 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2018-12-01 19:59:05,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 19:59:05,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-12-01 19:59:05,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 19:59:05,038 INFO L225 Difference]: With dead ends: 66 [2018-12-01 19:59:05,038 INFO L226 Difference]: Without dead ends: 42 [2018-12-01 19:59:05,038 INFO L631 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 [2018-12-01 19:59:05,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-01 19:59:05,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2018-12-01 19:59:05,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-01 19:59:05,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-12-01 19:59:05,041 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 30 [2018-12-01 19:59:05,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 19:59:05,042 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-12-01 19:59:05,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 19:59:05,042 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-12-01 19:59:05,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-01 19:59:05,042 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 19:59:05,042 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 19:59:05,042 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 19:59:05,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:59:05,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1504377949, now seen corresponding path program 1 times [2018-12-01 19:59:05,043 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:59:05,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:59:05,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:59:05,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:59:05,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:59:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:59:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:59:05,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 19:59:05,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 19:59:05,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 19:59:05,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 19:59:05,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 19:59:05,074 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 3 states. [2018-12-01 19:59:05,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:59:05,089 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2018-12-01 19:59:05,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 19:59:05,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-12-01 19:59:05,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 19:59:05,090 INFO L225 Difference]: With dead ends: 71 [2018-12-01 19:59:05,090 INFO L226 Difference]: Without dead ends: 42 [2018-12-01 19:59:05,090 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 19:59:05,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-01 19:59:05,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-12-01 19:59:05,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-01 19:59:05,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-12-01 19:59:05,093 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 35 [2018-12-01 19:59:05,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 19:59:05,093 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-12-01 19:59:05,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 19:59:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-12-01 19:59:05,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-01 19:59:05,094 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 19:59:05,094 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 19:59:05,094 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 19:59:05,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:59:05,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1370364443, now seen corresponding path program 1 times [2018-12-01 19:59:05,094 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:59:05,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:59:05,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:59:05,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:59:05,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:59:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:59:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:59:05,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 19:59:05,145 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/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 [2018-12-01 19:59:05,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:59:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:59:05,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:59:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:59:05,233 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 19:59:05,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-12-01 19:59:05,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 19:59:05,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 19:59:05,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-01 19:59:05,233 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2018-12-01 19:59:05,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 19:59:05,264 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2018-12-01 19:59:05,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 19:59:05,264 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2018-12-01 19:59:05,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 19:59:05,265 INFO L225 Difference]: With dead ends: 71 [2018-12-01 19:59:05,265 INFO L226 Difference]: Without dead ends: 47 [2018-12-01 19:59:05,266 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-12-01 19:59:05,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-12-01 19:59:05,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-12-01 19:59:05,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-01 19:59:05,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2018-12-01 19:59:05,271 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 35 [2018-12-01 19:59:05,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 19:59:05,271 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2018-12-01 19:59:05,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 19:59:05,271 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2018-12-01 19:59:05,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-01 19:59:05,272 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 19:59:05,272 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 19:59:05,272 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 19:59:05,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 19:59:05,273 INFO L82 PathProgramCache]: Analyzing trace with hash 2118555171, now seen corresponding path program 1 times [2018-12-01 19:59:05,273 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 19:59:05,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 19:59:05,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:59:05,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:59:05,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 19:59:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:59:06,162 WARN L180 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2018-12-01 19:59:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:59:06,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 19:59:06,392 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/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 [2018-12-01 19:59:06,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 19:59:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 19:59:06,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 19:59:06,439 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-01 19:59:06,440 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:06,444 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:06,444 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-12-01 19:59:21,152 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 19:59:21,153 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 19:59:21,154 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-12-01 19:59:21,158 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 20 [2018-12-01 19:59:21,159 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:21,164 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:21,169 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. [2018-12-01 19:59:21,169 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:26 [2018-12-01 19:59:22,411 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-12-01 19:59:22,413 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-01 19:59:22,414 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:22,415 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:22,421 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:22,421 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:45, output treesize:41 [2018-12-01 19:59:26,009 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2018-12-01 19:59:26,011 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 19:59:26,013 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-01 19:59:26,013 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:26,016 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:26,030 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 19:59:26,032 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 19:59:26,042 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 19:59:26,042 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:79, output treesize:62 [2018-12-01 19:59:29,237 WARN L180 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-12-01 19:59:29,241 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 146 [2018-12-01 19:59:29,244 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 142 [2018-12-01 19:59:29,244 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 19:59:29,247 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 19:59:29,279 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 150 treesize of output 203 [2018-12-01 19:59:29,282 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 53 [2018-12-01 19:59:29,282 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:29,306 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 99 [2018-12-01 19:59:29,306 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-12-01 19:59:29,315 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-01 19:59:29,326 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-12-01 19:59:29,326 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:172, output treesize:82 [2018-12-01 19:59:31,778 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2018-12-01 19:59:31,780 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-01 19:59:31,780 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:31,787 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:31,790 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 82 [2018-12-01 19:59:31,793 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-01 19:59:31,793 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:31,804 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:31,836 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 78 [2018-12-01 19:59:31,838 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-01 19:59:31,838 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:31,847 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:31,850 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 43 [2018-12-01 19:59:31,851 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-01 19:59:31,851 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:31,857 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:31,882 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 74 [2018-12-01 19:59:31,884 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2018-12-01 19:59:31,885 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:31,890 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:31,920 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 66 [2018-12-01 19:59:31,922 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2018-12-01 19:59:31,923 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:31,949 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 38 [2018-12-01 19:59:31,949 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-12-01 19:59:31,962 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-01 19:59:31,983 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 3 xjuncts. [2018-12-01 19:59:31,983 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 6 variables, input treesize:136, output treesize:135 [2018-12-01 19:59:34,127 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 19:59:34,128 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 19:59:34,128 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 19:59:34,130 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 19:59:34,130 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2018-12-01 19:59:34,131 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:34,140 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2018-12-01 19:59:34,142 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2018-12-01 19:59:34,142 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:34,143 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:34,150 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:34,150 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:166, output treesize:33 [2018-12-01 19:59:34,185 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-12-01 19:59:34,186 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 12 [2018-12-01 19:59:34,187 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:34,191 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:34,196 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-01 19:59:34,197 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-12-01 19:59:34,197 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:34,198 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:34,202 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:34,202 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:44, output treesize:14 [2018-12-01 19:59:34,231 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-01 19:59:34,232 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-12-01 19:59:34,232 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 19:59:34,233 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:34,235 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 19:59:34,235 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2018-12-01 19:59:34,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 19:59:34,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 19:59:34,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 38 [2018-12-01 19:59:34,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-12-01 19:59:34,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-12-01 19:59:34,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1250, Unknown=53, NotChecked=0, Total=1406 [2018-12-01 19:59:34,275 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 38 states. [2018-12-01 19:59:43,984 WARN L180 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 19 [2018-12-01 19:59:48,138 WARN L180 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 45 DAG size of output: 21 [2018-12-01 20:00:02,779 WARN L180 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2018-12-01 20:00:09,626 WARN L180 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-12-01 20:00:20,637 WARN L180 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-12-01 20:00:26,614 WARN L180 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-12-01 20:00:33,889 WARN L180 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 45 [2018-12-01 20:00:43,298 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 49 [2018-12-01 20:00:55,320 WARN L180 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 77 [2018-12-01 20:00:58,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 20:00:58,766 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2018-12-01 20:00:58,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-01 20:00:58,766 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 40 [2018-12-01 20:00:58,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 20:00:58,767 INFO L225 Difference]: With dead ends: 64 [2018-12-01 20:00:58,767 INFO L226 Difference]: Without dead ends: 62 [2018-12-01 20:00:58,768 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 57.0s TimeCoverageRelationStatistics Valid=214, Invalid=2466, Unknown=76, NotChecked=0, Total=2756 [2018-12-01 20:00:58,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-12-01 20:00:58,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2018-12-01 20:00:58,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-12-01 20:00:58,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-12-01 20:00:58,774 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 40 [2018-12-01 20:00:58,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 20:00:58,775 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-12-01 20:00:58,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-12-01 20:00:58,775 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-12-01 20:00:58,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-01 20:00:58,776 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 20:00:58,776 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 20:00:58,777 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 20:00:58,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 20:00:58,777 INFO L82 PathProgramCache]: Analyzing trace with hash 390225691, now seen corresponding path program 2 times [2018-12-01 20:00:58,777 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 20:00:58,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 20:00:58,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:00:58,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:00:58,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:00:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:00:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:00:58,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 20:00:58,824 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 20:00:58,831 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 20:00:58,878 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 20:00:58,878 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 20:00:58,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 20:00:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:00:58,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 20:00:58,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-12-01 20:00:58,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 20:00:58,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 20:00:58,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-12-01 20:00:58,911 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 7 states. [2018-12-01 20:00:58,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 20:00:58,934 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2018-12-01 20:00:58,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 20:00:58,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2018-12-01 20:00:58,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 20:00:58,935 INFO L225 Difference]: With dead ends: 73 [2018-12-01 20:00:58,935 INFO L226 Difference]: Without dead ends: 44 [2018-12-01 20:00:58,935 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-01 20:00:58,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-01 20:00:58,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-01 20:00:58,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-01 20:00:58,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-12-01 20:00:58,941 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 45 [2018-12-01 20:00:58,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 20:00:58,941 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-12-01 20:00:58,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 20:00:58,942 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-12-01 20:00:58,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-12-01 20:00:58,942 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 20:00:58,942 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 20:00:58,942 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 20:00:58,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 20:00:58,943 INFO L82 PathProgramCache]: Analyzing trace with hash 117064084, now seen corresponding path program 1 times [2018-12-01 20:00:58,943 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 20:00:58,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 20:00:58,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:00:58,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 20:00:58,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:00:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:00:59,541 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:00:59,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 20:00:59,541 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 20:00:59,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:00:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:00:59,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 20:00:59,574 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-01 20:00:59,574 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 20:00:59,577 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:00:59,577 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-01 20:01:01,952 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:01,953 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:01,954 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:01,954 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 42 [2018-12-01 20:01:01,957 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2018-12-01 20:01:01,957 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:01,963 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:01,971 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. [2018-12-01 20:01:01,972 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:35 [2018-12-01 20:01:02,199 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:02,202 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:02,215 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:02,215 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:53, output treesize:55 [2018-12-01 20:01:02,799 WARN L180 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-12-01 20:01:02,803 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 171 [2018-12-01 20:01:02,805 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 169 [2018-12-01 20:01:02,805 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:02,808 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:02,821 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:02,822 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:188, output treesize:184 [2018-12-01 20:01:04,867 WARN L180 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 38 [2018-12-01 20:01:04,875 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-12-01 20:01:04,878 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-01 20:01:04,878 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:04,882 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:04,894 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:04,894 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:344, output treesize:340 [2018-12-01 20:01:05,083 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 58 [2018-12-01 20:01:05,086 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:05,087 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:05,088 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:05,090 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:05,091 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 37 [2018-12-01 20:01:05,091 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,112 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:05,113 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:05,129 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:05,131 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:05,131 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:01:05,132 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 174 [2018-12-01 20:01:05,172 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 69 [2018-12-01 20:01:05,175 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 62 [2018-12-01 20:01:05,188 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 62 [2018-12-01 20:01:05,188 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,196 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,205 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,226 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 56 [2018-12-01 20:01:05,229 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2018-12-01 20:01:05,229 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:05,235 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:05,254 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 62 [2018-12-01 20:01:05,262 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 59 [2018-12-01 20:01:05,263 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2018-12-01 20:01:05,264 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,270 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,276 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,293 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 76 [2018-12-01 20:01:05,298 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2018-12-01 20:01:05,298 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,310 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2018-12-01 20:01:05,311 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,322 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 46 [2018-12-01 20:01:05,322 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,329 INFO L267 ElimStorePlain]: Start of recursive call 12: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,339 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,352 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:05,353 INFO L202 ElimStorePlain]: Needed 15 recursive calls to eliminate 6 variables, input treesize:390, output treesize:91 [2018-12-01 20:01:05,407 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-01 20:01:05,409 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-12-01 20:01:05,409 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,410 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,418 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:05,418 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:102, output treesize:91 [2018-12-01 20:01:05,467 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 51 [2018-12-01 20:01:05,468 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2018-12-01 20:01:05,468 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,474 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-01 20:01:05,474 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,479 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 9 [2018-12-01 20:01:05,479 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,481 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,483 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:05,483 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:92, output treesize:4 [2018-12-01 20:01:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:01:05,518 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 20:01:05,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 39 [2018-12-01 20:01:05,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-12-01 20:01:05,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-12-01 20:01:05,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1369, Unknown=7, NotChecked=0, Total=1482 [2018-12-01 20:01:05,519 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 39 states. [2018-12-01 20:01:11,800 WARN L180 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-12-01 20:01:12,330 WARN L180 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-12-01 20:01:12,783 WARN L180 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-12-01 20:01:16,360 WARN L180 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 40 [2018-12-01 20:01:21,750 WARN L180 SmtUtils]: Spent 2.50 s on a formula simplification that was a NOOP. DAG size: 47 [2018-12-01 20:01:29,348 WARN L180 SmtUtils]: Spent 3.25 s on a formula simplification that was a NOOP. DAG size: 48 [2018-12-01 20:01:34,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 20:01:34,730 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2018-12-01 20:01:34,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-12-01 20:01:34,730 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 42 [2018-12-01 20:01:34,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 20:01:34,731 INFO L225 Difference]: With dead ends: 90 [2018-12-01 20:01:34,731 INFO L226 Difference]: Without dead ends: 63 [2018-12-01 20:01:34,732 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=285, Invalid=3366, Unknown=9, NotChecked=0, Total=3660 [2018-12-01 20:01:34,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-12-01 20:01:34,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 45. [2018-12-01 20:01:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-01 20:01:34,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-12-01 20:01:34,737 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 42 [2018-12-01 20:01:34,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 20:01:34,737 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-12-01 20:01:34,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-12-01 20:01:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-12-01 20:01:34,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-12-01 20:01:34,737 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 20:01:34,737 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-01 20:01:34,738 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 20:01:34,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 20:01:34,738 INFO L82 PathProgramCache]: Analyzing trace with hash 117065758, now seen corresponding path program 1 times [2018-12-01 20:01:34,738 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 20:01:34,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 20:01:34,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:01:34,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:01:34,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:01:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:01:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:01:36,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 20:01:36,203 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 20:01:36,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:01:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:01:36,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 20:01:36,237 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-01 20:01:36,238 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:36,240 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:36,240 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-12-01 20:01:36,441 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:36,443 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:36,453 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2018-12-01 20:01:36,455 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2018-12-01 20:01:36,457 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:36,458 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 35 [2018-12-01 20:01:36,461 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:36,461 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:36,462 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:36,464 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2018-12-01 20:01:36,465 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:36,470 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:36,473 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:36,476 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:36,482 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:36,482 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:67, output treesize:33 [2018-12-01 20:01:36,541 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:36,545 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2018-12-01 20:01:36,546 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2018-12-01 20:01:36,547 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:36,550 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:36,555 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:36,556 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:33 [2018-12-01 20:01:36,753 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:36,754 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:36,764 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:01:36,767 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 42 [2018-12-01 20:01:36,770 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2018-12-01 20:01:36,770 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:01:36,776 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:01:36,785 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. [2018-12-01 20:01:36,786 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:44, output treesize:44 [2018-12-01 20:01:36,959 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:36,963 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:36,983 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:36,986 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:36,999 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:37,000 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:108, output treesize:80 [2018-12-01 20:01:37,986 WARN L180 SmtUtils]: Spent 882.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-12-01 20:01:38,924 WARN L180 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-12-01 20:01:38,927 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:38,934 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:38,965 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:38,969 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:38,994 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:38,994 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:119, output treesize:123 [2018-12-01 20:01:42,190 WARN L180 SmtUtils]: Spent 3.10 s on a formula simplification that was a NOOP. DAG size: 60 [2018-12-01 20:01:42,193 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:42,205 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:42,274 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:42,274 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:687, output treesize:697 [2018-12-01 20:01:44,469 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:44,484 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:44,551 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2018-12-01 20:01:44,552 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:1079, output treesize:1153 [2018-12-01 20:02:07,575 WARN L180 SmtUtils]: Spent 6.72 s on a formula simplification. DAG size of input: 419 DAG size of output: 97 [2018-12-01 20:02:07,590 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:02:07,595 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:02:07,599 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:02:07,606 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:02:07,606 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 37 [2018-12-01 20:02:07,607 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:07,805 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:02:07,814 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:02:07,976 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:02:07,999 INFO L303 Elim1Store]: Index analysis took 207 ms [2018-12-01 20:02:07,999 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 533 treesize of output 375 [2018-12-01 20:02:08,233 WARN L180 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2018-12-01 20:02:08,244 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 82 [2018-12-01 20:02:08,252 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 72 [2018-12-01 20:02:08,282 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 71 [2018-12-01 20:02:08,282 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:08,356 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:08,426 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:08,574 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 70 [2018-12-01 20:02:08,632 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 67 [2018-12-01 20:02:08,640 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-01 20:02:08,640 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:08,680 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:08,717 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:08,815 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:02:08,835 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 291 treesize of output 270 [2018-12-01 20:02:08,841 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-12-01 20:02:08,841 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:08,909 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 218 [2018-12-01 20:02:08,910 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:02:08,972 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:02:09,058 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2018-12-01 20:02:09,064 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2018-12-01 20:02:09,064 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:02:09,151 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:02:09,152 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2018-12-01 20:02:09,152 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,182 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,251 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,403 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 218 [2018-12-01 20:02:09,408 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2018-12-01 20:02:09,413 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2018-12-01 20:02:09,424 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2018-12-01 20:02:09,438 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 49 [2018-12-01 20:02:09,439 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,456 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,471 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,488 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,558 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 216 [2018-12-01 20:02:09,562 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2018-12-01 20:02:09,562 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,621 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:02:09,622 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 198 [2018-12-01 20:02:09,625 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 189 [2018-12-01 20:02:09,626 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,649 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,669 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,689 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,744 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 108 [2018-12-01 20:02:09,747 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2018-12-01 20:02:09,751 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2018-12-01 20:02:09,758 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2018-12-01 20:02:09,769 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 34 [2018-12-01 20:02:09,769 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,776 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,783 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,790 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,806 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 88 [2018-12-01 20:02:09,809 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:02:09,811 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 47 [2018-12-01 20:02:09,811 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,830 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 106 [2018-12-01 20:02:09,832 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2018-12-01 20:02:09,832 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,842 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,849 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,856 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,886 INFO L267 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:09,886 INFO L202 ElimStorePlain]: Needed 33 recursive calls to eliminate 13 variables, input treesize:1216, output treesize:160 [2018-12-01 20:02:10,065 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 134 [2018-12-01 20:02:10,067 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 75 [2018-12-01 20:02:10,068 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:02:10,083 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:02:10,083 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:02:10,085 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 48 [2018-12-01 20:02:10,085 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:10,098 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2018-12-01 20:02:10,098 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:10,108 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:02:10,129 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 48 [2018-12-01 20:02:10,131 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 5 [2018-12-01 20:02:10,131 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:10,138 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2018-12-01 20:02:10,138 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:10,142 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 3 [2018-12-01 20:02:10,142 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:10,143 INFO L267 ElimStorePlain]: Start of recursive call 6: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:10,148 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:10,148 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 3 variables, input treesize:191, output treesize:14 [2018-12-01 20:02:10,204 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-01 20:02:10,205 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-12-01 20:02:10,205 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:10,206 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:10,209 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:10,210 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2018-12-01 20:02:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:02:10,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 20:02:10,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 46 [2018-12-01 20:02:10,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-12-01 20:02:10,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-12-01 20:02:10,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1936, Unknown=9, NotChecked=0, Total=2070 [2018-12-01 20:02:10,262 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 46 states. [2018-12-01 20:02:55,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 20:02:55,211 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-12-01 20:02:55,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-12-01 20:02:55,211 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 42 [2018-12-01 20:02:55,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 20:02:55,212 INFO L225 Difference]: With dead ends: 61 [2018-12-01 20:02:55,212 INFO L226 Difference]: Without dead ends: 59 [2018-12-01 20:02:55,213 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=211, Invalid=3202, Unknown=9, NotChecked=0, Total=3422 [2018-12-01 20:02:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-12-01 20:02:55,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2018-12-01 20:02:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-01 20:02:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2018-12-01 20:02:55,221 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 42 [2018-12-01 20:02:55,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 20:02:55,221 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2018-12-01 20:02:55,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-12-01 20:02:55,221 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2018-12-01 20:02:55,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-12-01 20:02:55,222 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 20:02:55,222 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-01 20:02:55,222 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 20:02:55,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 20:02:55,222 INFO L82 PathProgramCache]: Analyzing trace with hash 831086799, now seen corresponding path program 2 times [2018-12-01 20:02:55,222 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 20:02:55,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 20:02:55,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:02:55,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:02:55,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:02:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:02:56,366 WARN L180 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2018-12-01 20:02:56,760 WARN L180 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2018-12-01 20:02:57,000 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2018-12-01 20:02:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:02:57,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 20:02:57,595 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 20:02:57,608 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 20:02:57,660 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 20:02:57,660 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 20:02:57,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 20:02:57,668 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-01 20:02:57,668 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:57,671 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:57,672 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-01 20:02:58,015 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2018-12-01 20:02:58,018 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-12-01 20:02:58,022 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:02:58,023 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:02:58,024 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 37 [2018-12-01 20:02:58,024 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:58,033 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:58,038 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:58,053 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:58,053 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:48, output treesize:48 [2018-12-01 20:02:58,201 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:02:58,208 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 89 [2018-12-01 20:02:58,211 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-12-01 20:02:58,211 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:58,229 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:58,249 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. [2018-12-01 20:02:58,249 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:88, output treesize:78 [2018-12-01 20:02:58,835 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:02:58,837 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:02:58,838 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:02:58,839 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 52 [2018-12-01 20:02:58,843 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2018-12-01 20:02:58,843 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:02:58,861 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:02:58,886 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. [2018-12-01 20:02:58,886 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:74, output treesize:74 [2018-12-01 20:02:59,536 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:02:59,539 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:02:59,559 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:02:59,562 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:02:59,579 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-01 20:02:59,579 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:91, output treesize:95 [2018-12-01 20:03:01,037 WARN L180 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 45 [2018-12-01 20:03:23,877 WARN L180 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 343 DAG size of output: 80 [2018-12-01 20:03:23,884 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:23,887 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:23,890 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:23,893 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:23,893 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 61 [2018-12-01 20:03:23,894 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:23,989 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:23,992 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:23,996 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:23,997 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:03:24,050 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:24,054 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:24,057 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:24,102 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:03:24,107 INFO L303 Elim1Store]: Index analysis took 125 ms [2018-12-01 20:03:24,108 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 435 treesize of output 367 [2018-12-01 20:03:24,253 WARN L180 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2018-12-01 20:03:24,256 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2018-12-01 20:03:24,261 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2018-12-01 20:03:24,272 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 50 [2018-12-01 20:03:24,272 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,296 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,320 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,398 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:24,409 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:24,410 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 91 [2018-12-01 20:03:24,419 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:24,432 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 100 [2018-12-01 20:03:24,435 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-01 20:03:24,435 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,456 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,472 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,528 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:24,529 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:24,533 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:24,543 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 229 [2018-12-01 20:03:24,549 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:24,583 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 60 [2018-12-01 20:03:24,584 INFO L267 ElimStorePlain]: Start of recursive call 11: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-12-01 20:03:24,645 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2018-12-01 20:03:24,646 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,685 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:03:24,688 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 67 [2018-12-01 20:03:24,689 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,732 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 186 [2018-12-01 20:03:24,732 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,765 INFO L267 ElimStorePlain]: Start of recursive call 10: 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,804 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 171 [2018-12-01 20:03:24,807 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 175 [2018-12-01 20:03:24,808 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,833 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,864 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,906 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:24,921 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 125 [2018-12-01 20:03:24,924 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2018-12-01 20:03:24,927 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2018-12-01 20:03:24,932 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2018-12-01 20:03:24,939 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 49 [2018-12-01 20:03:24,939 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,945 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,951 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,960 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:24,976 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:24,983 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 123 [2018-12-01 20:03:24,985 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2018-12-01 20:03:24,985 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:25,000 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:25,004 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:03:25,004 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 109 [2018-12-01 20:03:25,006 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 88 [2018-12-01 20:03:25,006 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:25,016 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:25,024 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:25,031 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:25,050 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:25,051 INFO L202 ElimStorePlain]: Needed 25 recursive calls to eliminate 7 variables, input treesize:933, output treesize:202 [2018-12-01 20:03:25,225 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:25,228 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 110 [2018-12-01 20:03:25,229 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2018-12-01 20:03:25,230 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:25,240 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:25,240 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:03:25,241 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 56 [2018-12-01 20:03:25,241 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:25,247 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2018-12-01 20:03:25,247 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:25,251 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:25,261 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. [2018-12-01 20:03:25,261 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:233, output treesize:147 [2018-12-01 20:03:25,409 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:25,411 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:03:25,411 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 80 [2018-12-01 20:03:25,413 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 30 treesize of output 23 [2018-12-01 20:03:25,413 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:25,427 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17 [2018-12-01 20:03:25,427 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:25,434 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 17 [2018-12-01 20:03:25,435 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 20:03:25,437 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:25,440 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:03:25,440 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:142, output treesize:4 [2018-12-01 20:03:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:03:25,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 20:03:25,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28] total 48 [2018-12-01 20:03:25,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-12-01 20:03:25,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-12-01 20:03:25,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=2117, Unknown=10, NotChecked=0, Total=2256 [2018-12-01 20:03:25,506 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 48 states. [2018-12-01 20:04:00,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 20:04:00,109 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2018-12-01 20:04:00,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-12-01 20:04:00,110 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 44 [2018-12-01 20:04:00,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 20:04:00,110 INFO L225 Difference]: With dead ends: 70 [2018-12-01 20:04:00,110 INFO L226 Difference]: Without dead ends: 67 [2018-12-01 20:04:00,111 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=258, Invalid=3892, Unknown=10, NotChecked=0, Total=4160 [2018-12-01 20:04:00,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-12-01 20:04:00,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 47. [2018-12-01 20:04:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-12-01 20:04:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-12-01 20:04:00,120 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2018-12-01 20:04:00,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 20:04:00,120 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-12-01 20:04:00,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-12-01 20:04:00,120 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-12-01 20:04:00,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-12-01 20:04:00,121 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 20:04:00,121 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 20:04:00,121 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 20:04:00,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 20:04:00,122 INFO L82 PathProgramCache]: Analyzing trace with hash 831088473, now seen corresponding path program 2 times [2018-12-01 20:04:00,122 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 20:04:00,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 20:04:00,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:04:00,122 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 20:04:00,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 20:04:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:04:01,626 WARN L180 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 71 [2018-12-01 20:04:02,240 WARN L180 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 89 [2018-12-01 20:04:02,807 WARN L180 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 80 [2018-12-01 20:04:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:04:03,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 20:04:03,516 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 20:04:03,523 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 20:04:03,596 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 20:04:03,596 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 20:04:03,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 20:04:03,603 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-01 20:04:03,603 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:03,607 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:03,607 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-01 20:04:03,661 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-12-01 20:04:03,662 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-01 20:04:03,664 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:03,666 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-01 20:04:03,666 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:03,669 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:03,671 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:03,685 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2018-12-01 20:04:03,687 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:03,688 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-01 20:04:03,688 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:03,691 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:03,699 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:03,699 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:73, output treesize:39 [2018-12-01 20:04:03,713 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:03,727 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:03,727 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:50 [2018-12-01 20:04:04,250 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2018-12-01 20:04:04,253 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-12-01 20:04:04,256 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:04,257 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-12-01 20:04:04,258 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,264 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,270 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,299 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2018-12-01 20:04:04,302 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-12-01 20:04:04,305 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:04,306 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:04:04,306 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 36 [2018-12-01 20:04:04,306 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,313 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,318 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,344 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:04,349 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 60 [2018-12-01 20:04:04,351 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 32 [2018-12-01 20:04:04,354 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:04,355 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2018-12-01 20:04:04,356 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,359 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,366 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,390 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:04,393 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 68 [2018-12-01 20:04:04,396 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:04,397 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2018-12-01 20:04:04,397 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,404 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,422 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:04,422 INFO L202 ElimStorePlain]: Needed 12 recursive calls to eliminate 6 variables, input treesize:132, output treesize:116 [2018-12-01 20:04:04,522 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:04,531 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 54 [2018-12-01 20:04:04,536 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 44 [2018-12-01 20:04:04,536 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,552 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,583 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:04,587 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 43 [2018-12-01 20:04:04,589 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2018-12-01 20:04:04,589 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,595 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,616 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:04,619 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 118 [2018-12-01 20:04:04,621 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2018-12-01 20:04:04,622 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,634 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:04,652 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:04,652 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:195, output treesize:142 [2018-12-01 20:04:05,004 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:05,005 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:05,005 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:05,006 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 67 [2018-12-01 20:04:05,008 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:05,009 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:04:05,009 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 77 [2018-12-01 20:04:05,009 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:05,021 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:05,044 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:05,044 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:150, output treesize:148 [2018-12-01 20:04:05,249 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:05,252 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:05,271 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:05,273 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:05,287 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:05,287 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:108, output treesize:80 [2018-12-01 20:04:06,251 WARN L180 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-12-01 20:04:07,291 WARN L180 SmtUtils]: Spent 911.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-12-01 20:04:07,293 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:07,298 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:07,332 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:07,337 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:07,364 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:07,364 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:119, output treesize:123 [2018-12-01 20:04:11,089 WARN L180 SmtUtils]: Spent 3.60 s on a formula simplification that was a NOOP. DAG size: 60 [2018-12-01 20:04:11,092 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:11,105 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:11,181 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:11,181 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:687, output treesize:697 [2018-12-01 20:04:13,440 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:13,453 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:13,498 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2018-12-01 20:04:13,498 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:1079, output treesize:1153 [2018-12-01 20:04:52,862 WARN L180 SmtUtils]: Spent 8.93 s on a formula simplification. DAG size of input: 437 DAG size of output: 115 [2018-12-01 20:04:52,892 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:52,901 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:52,916 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:52,933 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:52,933 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 79 [2018-12-01 20:04:52,934 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:53,450 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:04:53,694 INFO L303 Elim1Store]: Index analysis took 258 ms [2018-12-01 20:04:53,694 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 351 [2018-12-01 20:04:53,746 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2018-12-01 20:04:53,769 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2018-12-01 20:04:53,823 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2018-12-01 20:04:53,915 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2018-12-01 20:04:53,916 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:53,973 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:54,034 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:54,096 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:54,317 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:54,325 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:54,335 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:54,336 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:04:54,497 INFO L303 Elim1Store]: Index analysis took 197 ms [2018-12-01 20:04:54,498 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 426 [2018-12-01 20:04:54,513 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:54,525 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 135 [2018-12-01 20:04:54,525 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:54,700 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:54,706 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:54,714 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:54,828 INFO L303 Elim1Store]: Index analysis took 141 ms [2018-12-01 20:04:54,829 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 379 [2018-12-01 20:04:54,836 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2018-12-01 20:04:54,836 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:54,943 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:55,012 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:55,080 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:55,266 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:04:55,371 INFO L303 Elim1Store]: Index analysis took 112 ms [2018-12-01 20:04:55,371 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 663 treesize of output 781 [2018-12-01 20:04:55,699 WARN L180 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2018-12-01 20:04:55,705 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2018-12-01 20:04:55,711 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2018-12-01 20:04:55,732 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2018-12-01 20:04:55,757 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2018-12-01 20:04:55,757 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:55,790 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:55,820 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:55,854 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:56,037 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:56,042 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:56,048 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:56,049 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:04:56,107 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:04:56,108 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 663 treesize of output 789 [2018-12-01 20:04:56,115 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:56,116 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 121 [2018-12-01 20:04:56,116 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:56,229 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:56,232 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:56,256 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:04:56,267 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 641 treesize of output 693 [2018-12-01 20:04:56,271 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 593 treesize of output 623 [2018-12-01 20:04:56,271 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:56,336 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:56,392 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:56,446 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:56,542 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:56,543 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:04:56,554 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:56,556 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:56,606 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:04:56,607 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 610 treesize of output 400 [2018-12-01 20:04:56,747 WARN L180 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2018-12-01 20:04:56,750 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 76 [2018-12-01 20:04:56,754 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 69 [2018-12-01 20:04:56,762 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 69 [2018-12-01 20:04:56,763 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:56,778 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:56,790 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:04:56,848 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:56,858 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 310 treesize of output 247 [2018-12-01 20:04:56,861 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2018-12-01 20:04:56,862 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:56,908 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 52 [2018-12-01 20:04:56,909 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:56,965 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 33 [2018-12-01 20:04:56,965 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-12-01 20:04:57,004 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:04:57,007 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 162 [2018-12-01 20:04:57,211 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 20:04:57,212 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimArr_62 input size 44 context size 44 output size 44 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-12-01 20:04:57,217 INFO L168 Benchmark]: Toolchain (without parser) took 353251.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 203.9 MB). Free memory was 949.5 MB in the beginning and 1.2 GB in the end (delta: -236.3 MB). Peak memory consumption was 349.4 MB. Max. memory is 11.5 GB. [2018-12-01 20:04:57,217 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 20:04:57,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -181.2 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2018-12-01 20:04:57,218 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-12-01 20:04:57,218 INFO L168 Benchmark]: Boogie Preprocessor took 18.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 20:04:57,218 INFO L168 Benchmark]: RCFGBuilder took 224.34 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2018-12-01 20:04:57,218 INFO L168 Benchmark]: TraceAbstraction took 352677.78 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -88.7 MB). Peak memory consumption was 351.3 MB. Max. memory is 11.5 GB. [2018-12-01 20:04:57,220 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 309.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -181.2 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 224.34 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 352677.78 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -88.7 MB). Peak memory consumption was 351.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_62 input size 44 context size 44 output size 44 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_62 input size 44 context size 44 output size 44: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-01 20:04:58,506 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 20:04:58,507 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 20:04:58,514 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 20:04:58,514 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 20:04:58,515 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 20:04:58,516 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 20:04:58,517 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 20:04:58,518 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 20:04:58,519 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 20:04:58,519 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 20:04:58,520 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 20:04:58,520 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 20:04:58,521 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 20:04:58,522 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 20:04:58,522 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 20:04:58,523 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 20:04:58,524 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 20:04:58,525 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 20:04:58,526 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 20:04:58,527 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 20:04:58,527 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 20:04:58,529 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 20:04:58,529 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 20:04:58,529 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 20:04:58,530 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 20:04:58,530 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 20:04:58,531 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 20:04:58,531 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 20:04:58,532 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 20:04:58,532 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 20:04:58,532 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 20:04:58,532 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 20:04:58,533 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 20:04:58,533 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 20:04:58,534 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 20:04:58,534 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-01 20:04:58,544 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 20:04:58,544 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 20:04:58,545 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 20:04:58,545 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 20:04:58,545 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 20:04:58,545 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 20:04:58,546 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 20:04:58,546 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 20:04:58,546 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 20:04:58,546 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 20:04:58,546 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 20:04:58,546 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 20:04:58,547 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 20:04:58,547 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 20:04:58,547 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-01 20:04:58,547 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-01 20:04:58,547 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 20:04:58,547 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 20:04:58,547 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 20:04:58,548 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 20:04:58,548 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 20:04:58,548 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 20:04:58,548 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 20:04:58,548 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 20:04:58,548 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 20:04:58,549 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 20:04:58,549 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 20:04:58,549 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 20:04:58,549 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-01 20:04:58,549 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 20:04:58,549 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-01 20:04:58,549 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-01 20:04:58,550 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_1e3145ec-9f68-44ac-9ba5-18314670d621/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 -> 4aa4ae97046b46e050cb2478dec257c6a324dc09 [2018-12-01 20:04:58,573 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 20:04:58,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 20:04:58,583 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 20:04:58,584 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 20:04:58,584 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 20:04:58,584 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-12-01 20:04:58,620 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/data/92a26023b/35ad127987c14677b4e0f04384c6b750/FLAG6f46ccc01 [2018-12-01 20:04:59,067 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 20:04:59,068 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-12-01 20:04:59,074 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/data/92a26023b/35ad127987c14677b4e0f04384c6b750/FLAG6f46ccc01 [2018-12-01 20:04:59,081 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/data/92a26023b/35ad127987c14677b4e0f04384c6b750 [2018-12-01 20:04:59,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 20:04:59,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 20:04:59,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 20:04:59,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 20:04:59,087 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 20:04:59,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 08:04:59" (1/1) ... [2018-12-01 20:04:59,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15605f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:59, skipping insertion in model container [2018-12-01 20:04:59,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 08:04:59" (1/1) ... [2018-12-01 20:04:59,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 20:04:59,111 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 20:04:59,268 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 20:04:59,277 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 20:04:59,349 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 20:04:59,384 INFO L195 MainTranslator]: Completed translation [2018-12-01 20:04:59,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:59 WrapperNode [2018-12-01 20:04:59,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 20:04:59,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 20:04:59,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 20:04:59,385 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 20:04:59,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:59" (1/1) ... [2018-12-01 20:04:59,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:59" (1/1) ... [2018-12-01 20:04:59,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 20:04:59,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 20:04:59,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 20:04:59,404 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 20:04:59,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:59" (1/1) ... [2018-12-01 20:04:59,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:59" (1/1) ... [2018-12-01 20:04:59,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:59" (1/1) ... [2018-12-01 20:04:59,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:59" (1/1) ... [2018-12-01 20:04:59,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:59" (1/1) ... [2018-12-01 20:04:59,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:59" (1/1) ... [2018-12-01 20:04:59,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:59" (1/1) ... [2018-12-01 20:04:59,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 20:04:59,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 20:04:59,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 20:04:59,425 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 20:04:59,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/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 [2018-12-01 20:04:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-12-01 20:04:59,455 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-12-01 20:04:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-01 20:04:59,455 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-01 20:04:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 20:04:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-01 20:04:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-12-01 20:04:59,456 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-12-01 20:04:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 20:04:59,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 20:04:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 20:04:59,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 20:04:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-01 20:04:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-01 20:04:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 20:04:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-01 20:04:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-01 20:04:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-12-01 20:04:59,456 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-12-01 20:04:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2018-12-01 20:04:59,457 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2018-12-01 20:04:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 20:04:59,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 20:04:59,858 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 20:04:59,858 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-01 20:04:59,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:04:59 BoogieIcfgContainer [2018-12-01 20:04:59,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 20:04:59,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 20:04:59,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 20:04:59,861 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 20:04:59,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 08:04:59" (1/3) ... [2018-12-01 20:04:59,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a03929d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 08:04:59, skipping insertion in model container [2018-12-01 20:04:59,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:04:59" (2/3) ... [2018-12-01 20:04:59,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a03929d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 08:04:59, skipping insertion in model container [2018-12-01 20:04:59,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:04:59" (3/3) ... [2018-12-01 20:04:59,863 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-12-01 20:04:59,868 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 20:04:59,872 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 20:04:59,881 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 20:04:59,897 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 20:04:59,897 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 20:04:59,897 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 20:04:59,897 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 20:04:59,897 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 20:04:59,897 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 20:04:59,897 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 20:04:59,897 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 20:04:59,898 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 20:04:59,906 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2018-12-01 20:04:59,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-01 20:04:59,910 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 20:04:59,910 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 20:04:59,912 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 20:04:59,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 20:04:59,915 INFO L82 PathProgramCache]: Analyzing trace with hash 2094879456, now seen corresponding path program 1 times [2018-12-01 20:04:59,917 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 20:04:59,917 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 20:04:59,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:04:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:04:59,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 20:05:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:05:00,008 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 20:05:00,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 20:05:00,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 20:05:00,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 20:05:00,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 20:05:00,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 20:05:00,028 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2018-12-01 20:05:00,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 20:05:00,045 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2018-12-01 20:05:00,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 20:05:00,047 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2018-12-01 20:05:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 20:05:00,054 INFO L225 Difference]: With dead ends: 86 [2018-12-01 20:05:00,054 INFO L226 Difference]: Without dead ends: 36 [2018-12-01 20:05:00,056 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 20:05:00,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-01 20:05:00,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-01 20:05:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-01 20:05:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-12-01 20:05:00,079 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 30 [2018-12-01 20:05:00,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 20:05:00,079 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-12-01 20:05:00,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 20:05:00,079 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-12-01 20:05:00,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-01 20:05:00,080 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 20:05:00,080 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 20:05:00,081 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 20:05:00,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 20:05:00,081 INFO L82 PathProgramCache]: Analyzing trace with hash 2094870807, now seen corresponding path program 1 times [2018-12-01 20:05:00,081 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 20:05:00,082 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 20:05:00,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:05:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:05:00,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 20:05:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:05:00,175 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 20:05:00,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 20:05:00,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 20:05:00,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 20:05:00,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 20:05:00,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-01 20:05:00,178 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2018-12-01 20:05:00,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 20:05:00,211 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2018-12-01 20:05:00,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 20:05:00,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-12-01 20:05:00,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 20:05:00,213 INFO L225 Difference]: With dead ends: 64 [2018-12-01 20:05:00,213 INFO L226 Difference]: Without dead ends: 41 [2018-12-01 20:05:00,213 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 20:05:00,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-01 20:05:00,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2018-12-01 20:05:00,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-01 20:05:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2018-12-01 20:05:00,217 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 30 [2018-12-01 20:05:00,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 20:05:00,218 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2018-12-01 20:05:00,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 20:05:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2018-12-01 20:05:00,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-01 20:05:00,218 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 20:05:00,218 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 20:05:00,218 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 20:05:00,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 20:05:00,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1504376275, now seen corresponding path program 1 times [2018-12-01 20:05:00,219 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 20:05:00,219 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 20:05:00,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:05:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:05:00,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 20:05:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:05:00,285 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 20:05:00,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 20:05:00,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 20:05:00,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 20:05:00,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 20:05:00,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 20:05:00,287 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 3 states. [2018-12-01 20:05:00,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 20:05:00,464 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2018-12-01 20:05:00,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 20:05:00,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-12-01 20:05:00,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 20:05:00,465 INFO L225 Difference]: With dead ends: 69 [2018-12-01 20:05:00,465 INFO L226 Difference]: Without dead ends: 41 [2018-12-01 20:05:00,465 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 20:05:00,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-01 20:05:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2018-12-01 20:05:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-01 20:05:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-12-01 20:05:00,469 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 35 [2018-12-01 20:05:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 20:05:00,469 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-12-01 20:05:00,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 20:05:00,469 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-12-01 20:05:00,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-01 20:05:00,470 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 20:05:00,470 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 20:05:00,470 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 20:05:00,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 20:05:00,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1370362769, now seen corresponding path program 1 times [2018-12-01 20:05:00,471 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 20:05:00,471 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 20:05:00,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:05:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:05:00,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 20:05:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:05:00,579 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 20:05:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 20:05:00,713 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 20:05:00,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-12-01 20:05:00,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-01 20:05:00,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-01 20:05:00,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-12-01 20:05:00,714 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 9 states. [2018-12-01 20:05:00,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 20:05:00,819 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2018-12-01 20:05:00,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-01 20:05:00,820 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2018-12-01 20:05:00,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 20:05:00,820 INFO L225 Difference]: With dead ends: 69 [2018-12-01 20:05:00,820 INFO L226 Difference]: Without dead ends: 46 [2018-12-01 20:05:00,821 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-12-01 20:05:00,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-01 20:05:00,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2018-12-01 20:05:00,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-01 20:05:00,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2018-12-01 20:05:00,824 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 35 [2018-12-01 20:05:00,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 20:05:00,824 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2018-12-01 20:05:00,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-01 20:05:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2018-12-01 20:05:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-01 20:05:00,825 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 20:05:00,825 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 20:05:00,825 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 20:05:00,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 20:05:00,825 INFO L82 PathProgramCache]: Analyzing trace with hash 2118553497, now seen corresponding path program 1 times [2018-12-01 20:05:00,826 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 20:05:00,826 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 20:05:00,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:05:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:05:00,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 20:05:00,986 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-12-01 20:05:00,989 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-01 20:05:00,989 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:05:00,992 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:05:00,997 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:05:00,997 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2018-12-01 20:05:01,028 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2018-12-01 20:05:01,031 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-12-01 20:05:01,031 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:05:01,033 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:05:01,034 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:05:01,034 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2018-12-01 20:05:01,054 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-01 20:05:01,054 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 20:05:01,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 20:05:01,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-12-01 20:05:01,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-01 20:05:01,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-01 20:05:01,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-12-01 20:05:01,056 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 11 states. [2018-12-01 20:05:01,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 20:05:01,386 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-12-01 20:05:01,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-01 20:05:01,387 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2018-12-01 20:05:01,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 20:05:01,388 INFO L225 Difference]: With dead ends: 49 [2018-12-01 20:05:01,388 INFO L226 Difference]: Without dead ends: 46 [2018-12-01 20:05:01,388 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2018-12-01 20:05:01,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-01 20:05:01,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-12-01 20:05:01,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-01 20:05:01,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2018-12-01 20:05:01,392 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 40 [2018-12-01 20:05:01,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 20:05:01,393 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2018-12-01 20:05:01,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-01 20:05:01,393 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2018-12-01 20:05:01,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-01 20:05:01,393 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 20:05:01,393 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 20:05:01,394 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 20:05:01,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 20:05:01,394 INFO L82 PathProgramCache]: Analyzing trace with hash 2118555171, now seen corresponding path program 1 times [2018-12-01 20:05:01,394 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 20:05:01,394 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e3145ec-9f68-44ac-9ba5-18314670d621/bin-2019/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 20:05:01,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 20:05:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 20:05:01,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 20:05:01,616 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-12-01 20:05:01,616 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 20:05:01,627 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:05:01,627 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-12-01 20:05:02,698 WARN L854 $PredicateComparison]: unable to prove that (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1))) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1)))) is different from true [2018-12-01 20:05:03,533 WARN L180 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-12-01 20:05:03,561 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:05:03,562 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:05:03,563 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 29 [2018-12-01 20:05:03,569 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-12-01 20:05:03,569 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:05:03,577 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:05:03,588 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-01 20:05:03,588 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:33, output treesize:31 [2018-12-01 20:05:03,726 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-12-01 20:05:03,729 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-01 20:05:03,730 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:05:03,734 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:05:03,759 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:05:03,759 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:45, output treesize:41 [2018-12-01 20:05:03,952 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:05:03,966 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:05:04,116 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2018-12-01 20:05:04,129 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:05:04,140 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-01 20:05:04,140 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 20:05:04,162 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:05:04,209 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:05:04,210 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:83, output treesize:70 [2018-12-01 20:05:06,349 WARN L180 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 38 [2018-12-01 20:05:06,362 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 290 treesize of output 280 [2018-12-01 20:05:06,378 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 280 treesize of output 270 [2018-12-01 20:05:06,379 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:05:06,463 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-01 20:05:06,745 INFO L303 Elim1Store]: Index analysis took 101 ms [2018-12-01 20:05:06,790 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 137 [2018-12-01 20:05:06,802 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 12 [2018-12-01 20:05:06,803 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 20:05:07,065 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 123 treesize of output 66 [2018-12-01 20:05:07,066 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-12-01 20:05:07,173 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-01 20:05:07,365 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2018-12-01 20:05:07,365 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:311, output treesize:346 [2018-12-01 20:05:11,982 WARN L180 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 63 [2018-12-01 20:05:12,059 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 245 treesize of output 242 [2018-12-01 20:05:12,075 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-01 20:05:12,075 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 20:05:12,220 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:05:12,301 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 288 treesize of output 285 [2018-12-01 20:05:12,331 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-01 20:05:12,331 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 20:05:12,662 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:05:14,252 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 238 [2018-12-01 20:05:14,262 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2018-12-01 20:05:14,262 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-01 20:05:14,346 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:05:15,596 INFO L303 Elim1Store]: Index analysis took 194 ms [2018-12-01 20:05:15,910 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 284 treesize of output 308 [2018-12-01 20:05:16,111 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 286 treesize of output 280 [2018-12-01 20:05:16,112 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-12-01 20:05:19,055 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 285 treesize of output 273 [2018-12-01 20:05:19,056 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-01 20:05:19,620 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-01 20:05:20,709 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 3 dim-2 vars, End of recursive call: 5 dim-0 vars, and 3 xjuncts. [2018-12-01 20:05:20,709 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 7 variables, input treesize:534, output treesize:1033 [2018-12-01 20:05:36,412 WARN L180 SmtUtils]: Spent 14.46 s on a formula simplification that was a NOOP. DAG size: 86 [2018-12-01 20:06:01,352 WARN L180 SmtUtils]: Spent 24.93 s on a formula simplification. DAG size of input: 312 DAG size of output: 66 [2018-12-01 20:06:01,411 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:06:01,435 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:06:01,463 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:06:01,464 INFO L303 Elim1Store]: Index analysis took 111 ms [2018-12-01 20:06:01,465 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2018-12-01 20:06:01,465 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 20:06:02,617 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 20:06:02,617 INFO L303 Elim1Store]: Index analysis took 120 ms [2018-12-01 20:06:02,618 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 151 [2018-12-01 20:06:02,863 WARN L180 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2018-12-01 20:06:02,875 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 94 [2018-12-01 20:06:02,887 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 87 [2018-12-01 20:06:02,990 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-12-01 20:06:03,016 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 111 [2018-12-01 20:06:03,017 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-01 20:06:03,113 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:06:03,188 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 20:06:03,331 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 81 [2018-12-01 20:06:03,347 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:06:03,350 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:06:03,406 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 73 treesize of output 95 [2018-12-01 20:06:03,414 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:06:03,421 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 43 [2018-12-01 20:06:03,433 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 20:06:03,637 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 20:06:03,638 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimArr_7 input size 19 context size 19 output size 19 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-12-01 20:06:03,640 INFO L168 Benchmark]: Toolchain (without parser) took 64556.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 209.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -116.9 MB). Peak memory consumption was 92.3 MB. Max. memory is 11.5 GB. [2018-12-01 20:06:03,640 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 20:06:03,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -183.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2018-12-01 20:06:03,641 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 20:06:03,641 INFO L168 Benchmark]: Boogie Preprocessor took 21.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-12-01 20:06:03,641 INFO L168 Benchmark]: RCFGBuilder took 433.64 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: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. [2018-12-01 20:06:03,642 INFO L168 Benchmark]: TraceAbstraction took 63780.43 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 94.4 MB. Max. memory is 11.5 GB. [2018-12-01 20:06:03,643 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 300.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -183.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 433.64 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: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 63780.43 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 94.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_7 input size 19 context size 19 output size 19 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_7 input size 19 context size 19 output size 19: 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...