./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.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_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 0b1dd98d7879c6a852477263dd33a13d229a6eb3 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 0b1dd98d7879c6a852477263dd33a13d229a6eb3 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 18:00:06,810 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 18:00:06,811 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 18:00:06,818 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 18:00:06,819 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 18:00:06,819 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 18:00:06,820 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 18:00:06,820 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 18:00:06,821 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 18:00:06,822 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 18:00:06,822 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 18:00:06,822 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 18:00:06,823 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 18:00:06,823 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 18:00:06,823 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 18:00:06,824 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 18:00:06,824 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 18:00:06,825 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 18:00:06,826 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 18:00:06,827 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 18:00:06,827 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 18:00:06,828 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 18:00:06,830 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 18:00:06,830 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 18:00:06,830 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 18:00:06,830 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 18:00:06,831 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 18:00:06,831 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 18:00:06,832 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 18:00:06,832 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 18:00:06,832 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 18:00:06,833 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 18:00:06,833 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 18:00:06,833 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 18:00:06,833 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 18:00:06,834 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 18:00:06,834 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-01 18:00:06,840 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 18:00:06,841 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 18:00:06,841 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 18:00:06,841 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 18:00:06,842 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 18:00:06,842 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 18:00:06,842 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 18:00:06,842 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 18:00:06,842 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 18:00:06,842 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 18:00:06,843 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 18:00:06,843 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 18:00:06,843 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 18:00:06,843 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 18:00:06,843 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 18:00:06,843 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 18:00:06,843 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 18:00:06,844 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 18:00:06,844 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 18:00:06,844 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 18:00:06,844 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 18:00:06,844 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 18:00:06,844 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 18:00:06,845 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 18:00:06,845 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 18:00:06,845 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 18:00:06,845 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 18:00:06,845 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 18:00:06,845 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 18:00:06,845 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 18:00:06,846 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_c9a7d0d1-6429-4098-9acd-02a109de635a/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 -> 0b1dd98d7879c6a852477263dd33a13d229a6eb3 [2018-12-01 18:00:06,869 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 18:00:06,875 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 18:00:06,877 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 18:00:06,878 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 18:00:06,878 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 18:00:06,879 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-12-01 18:00:06,912 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/data/375b6eea9/4e898059c2d5457aa0c122f1799c3c43/FLAGf346e0693 [2018-12-01 18:00:07,282 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 18:00:07,282 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-12-01 18:00:07,285 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/data/375b6eea9/4e898059c2d5457aa0c122f1799c3c43/FLAGf346e0693 [2018-12-01 18:00:07,293 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/data/375b6eea9/4e898059c2d5457aa0c122f1799c3c43 [2018-12-01 18:00:07,295 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 18:00:07,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 18:00:07,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 18:00:07,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 18:00:07,298 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 18:00:07,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:00:07" (1/1) ... [2018-12-01 18:00:07,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4857c57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:07, skipping insertion in model container [2018-12-01 18:00:07,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:00:07" (1/1) ... [2018-12-01 18:00:07,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 18:00:07,313 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 18:00:07,397 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:00:07,399 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 18:00:07,409 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:00:07,416 INFO L195 MainTranslator]: Completed translation [2018-12-01 18:00:07,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:07 WrapperNode [2018-12-01 18:00:07,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 18:00:07,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 18:00:07,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 18:00:07,417 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 18:00:07,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:07" (1/1) ... [2018-12-01 18:00:07,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:07" (1/1) ... [2018-12-01 18:00:07,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 18:00:07,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 18:00:07,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 18:00:07,429 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 18:00:07,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:07" (1/1) ... [2018-12-01 18:00:07,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:07" (1/1) ... [2018-12-01 18:00:07,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:07" (1/1) ... [2018-12-01 18:00:07,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:07" (1/1) ... [2018-12-01 18:00:07,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:07" (1/1) ... [2018-12-01 18:00:07,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:07" (1/1) ... [2018-12-01 18:00:07,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:07" (1/1) ... [2018-12-01 18:00:07,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 18:00:07,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 18:00:07,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 18:00:07,471 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 18:00:07,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 18:00:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 18:00:07,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 18:00:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 18:00:07,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 18:00:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 18:00:07,504 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 18:00:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-01 18:00:07,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-01 18:00:07,586 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 18:00:07,586 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-01 18:00:07,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:00:07 BoogieIcfgContainer [2018-12-01 18:00:07,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 18:00:07,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 18:00:07,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 18:00:07,589 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 18:00:07,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 06:00:07" (1/3) ... [2018-12-01 18:00:07,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f73eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 06:00:07, skipping insertion in model container [2018-12-01 18:00:07,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:07" (2/3) ... [2018-12-01 18:00:07,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f73eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 06:00:07, skipping insertion in model container [2018-12-01 18:00:07,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:00:07" (3/3) ... [2018-12-01 18:00:07,592 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2_true-unreach-call_true-no-overflow.i [2018-12-01 18:00:07,597 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 18:00:07,602 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 18:00:07,611 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 18:00:07,629 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 18:00:07,630 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 18:00:07,630 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 18:00:07,630 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 18:00:07,630 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 18:00:07,630 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 18:00:07,630 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 18:00:07,630 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 18:00:07,630 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 18:00:07,641 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-12-01 18:00:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 18:00:07,644 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:00:07,645 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:00:07,646 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:00:07,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:00:07,649 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2018-12-01 18:00:07,650 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:00:07,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:00:07,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:07,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:00:07,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:00:07,712 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 18:00:07,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:00:07,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 18:00:07,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 18:00:07,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 18:00:07,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 18:00:07,726 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-12-01 18:00:07,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:00:07,737 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-12-01 18:00:07,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 18:00:07,738 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-01 18:00:07,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:00:07,742 INFO L225 Difference]: With dead ends: 32 [2018-12-01 18:00:07,742 INFO L226 Difference]: Without dead ends: 13 [2018-12-01 18:00:07,744 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 18:00:07,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-01 18:00:07,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-01 18:00:07,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-01 18:00:07,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-12-01 18:00:07,764 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-12-01 18:00:07,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:00:07,764 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-12-01 18:00:07,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 18:00:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-12-01 18:00:07,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 18:00:07,764 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:00:07,765 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:00:07,765 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:00:07,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:00:07,765 INFO L82 PathProgramCache]: Analyzing trace with hash -158041290, now seen corresponding path program 1 times [2018-12-01 18:00:07,765 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:00:07,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:00:07,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:07,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:00:07,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:00:07,806 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 18:00:07,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:00:07,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 18:00:07,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 18:00:07,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 18:00:07,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 18:00:07,808 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2018-12-01 18:00:07,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:00:07,819 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-12-01 18:00:07,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 18:00:07,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-01 18:00:07,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:00:07,820 INFO L225 Difference]: With dead ends: 21 [2018-12-01 18:00:07,820 INFO L226 Difference]: Without dead ends: 16 [2018-12-01 18:00:07,821 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 18:00:07,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-01 18:00:07,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2018-12-01 18:00:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-01 18:00:07,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-12-01 18:00:07,823 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-12-01 18:00:07,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:00:07,824 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-12-01 18:00:07,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 18:00:07,824 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-12-01 18:00:07,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-01 18:00:07,824 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:00:07,824 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:00:07,824 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:00:07,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:00:07,825 INFO L82 PathProgramCache]: Analyzing trace with hash 743821333, now seen corresponding path program 1 times [2018-12-01 18:00:07,825 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:00:07,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:00:07,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:07,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:00:07,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:00:07,862 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 18:00:07,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 18:00:07,862 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 18:00:07,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:00:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:00:07,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:00:07,915 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 18:00:07,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 18:00:07,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-12-01 18:00:07,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 18:00:07,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 18:00:07,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-01 18:00:07,932 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2018-12-01 18:00:07,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:00:07,948 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2018-12-01 18:00:07,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 18:00:07,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-01 18:00:07,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:00:07,948 INFO L225 Difference]: With dead ends: 24 [2018-12-01 18:00:07,948 INFO L226 Difference]: Without dead ends: 19 [2018-12-01 18:00:07,949 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-01 18:00:07,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-12-01 18:00:07,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-12-01 18:00:07,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-01 18:00:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-12-01 18:00:07,951 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2018-12-01 18:00:07,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:00:07,951 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-12-01 18:00:07,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 18:00:07,951 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-12-01 18:00:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-01 18:00:07,952 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:00:07,952 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:00:07,952 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:00:07,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:00:07,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1182180650, now seen corresponding path program 2 times [2018-12-01 18:00:07,952 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:00:07,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:00:07,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:07,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:00:07,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:00:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:08,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 18:00:08,000 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 18:00:08,011 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 18:00:08,022 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 18:00:08,022 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 18:00:08,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:00:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:08,068 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 18:00:08,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-12-01 18:00:08,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 18:00:08,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 18:00:08,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-12-01 18:00:08,068 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 7 states. [2018-12-01 18:00:08,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:00:08,094 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2018-12-01 18:00:08,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 18:00:08,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-12-01 18:00:08,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:00:08,095 INFO L225 Difference]: With dead ends: 27 [2018-12-01 18:00:08,095 INFO L226 Difference]: Without dead ends: 22 [2018-12-01 18:00:08,095 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-12-01 18:00:08,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-01 18:00:08,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-12-01 18:00:08,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-01 18:00:08,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2018-12-01 18:00:08,098 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 16 [2018-12-01 18:00:08,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:00:08,098 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2018-12-01 18:00:08,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 18:00:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2018-12-01 18:00:08,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 18:00:08,099 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:00:08,099 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:00:08,099 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:00:08,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:00:08,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2055818357, now seen corresponding path program 3 times [2018-12-01 18:00:08,099 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:00:08,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:00:08,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:08,100 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 18:00:08,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:00:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:08,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 18:00:08,149 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 18:00:08,157 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 18:00:08,166 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-01 18:00:08,167 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 18:00:08,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:00:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:08,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 18:00:08,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-12-01 18:00:08,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-01 18:00:08,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-01 18:00:08,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-12-01 18:00:08,228 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 9 states. [2018-12-01 18:00:08,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:00:08,260 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-12-01 18:00:08,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 18:00:08,261 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-12-01 18:00:08,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:00:08,261 INFO L225 Difference]: With dead ends: 30 [2018-12-01 18:00:08,261 INFO L226 Difference]: Without dead ends: 25 [2018-12-01 18:00:08,261 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-12-01 18:00:08,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-12-01 18:00:08,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-12-01 18:00:08,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-01 18:00:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-12-01 18:00:08,264 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 19 [2018-12-01 18:00:08,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:00:08,264 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-12-01 18:00:08,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-01 18:00:08,264 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-12-01 18:00:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-01 18:00:08,265 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:00:08,265 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:00:08,265 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:00:08,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:00:08,265 INFO L82 PathProgramCache]: Analyzing trace with hash 318767734, now seen corresponding path program 4 times [2018-12-01 18:00:08,265 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:00:08,265 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:00:08,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:08,266 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 18:00:08,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:00:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:08,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 18:00:08,326 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 18:00:08,332 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 18:00:08,340 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 18:00:08,340 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 18:00:08,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:00:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:08,434 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 18:00:08,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-12-01 18:00:08,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-01 18:00:08,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-01 18:00:08,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-12-01 18:00:08,435 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 11 states. [2018-12-01 18:00:08,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:00:08,501 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2018-12-01 18:00:08,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 18:00:08,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-12-01 18:00:08,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:00:08,501 INFO L225 Difference]: With dead ends: 33 [2018-12-01 18:00:08,501 INFO L226 Difference]: Without dead ends: 28 [2018-12-01 18:00:08,502 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-12-01 18:00:08,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-01 18:00:08,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-12-01 18:00:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-01 18:00:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2018-12-01 18:00:08,505 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 22 [2018-12-01 18:00:08,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:00:08,505 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2018-12-01 18:00:08,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-01 18:00:08,505 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2018-12-01 18:00:08,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-01 18:00:08,506 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:00:08,506 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:00:08,506 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:00:08,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:00:08,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1904607445, now seen corresponding path program 5 times [2018-12-01 18:00:08,506 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:00:08,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:00:08,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:08,507 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 18:00:08,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:00:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:08,567 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 18:00:08,567 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 18:00:08,573 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 18:00:08,589 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-12-01 18:00:08,589 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 18:00:08,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:00:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:08,743 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 18:00:08,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-12-01 18:00:08,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-01 18:00:08,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-01 18:00:08,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-12-01 18:00:08,744 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 13 states. [2018-12-01 18:00:08,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:00:08,842 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2018-12-01 18:00:08,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-01 18:00:08,842 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2018-12-01 18:00:08,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:00:08,843 INFO L225 Difference]: With dead ends: 36 [2018-12-01 18:00:08,843 INFO L226 Difference]: Without dead ends: 31 [2018-12-01 18:00:08,843 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-12-01 18:00:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-01 18:00:08,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2018-12-01 18:00:08,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-01 18:00:08,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2018-12-01 18:00:08,847 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 25 [2018-12-01 18:00:08,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:00:08,847 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2018-12-01 18:00:08,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-01 18:00:08,847 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2018-12-01 18:00:08,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-01 18:00:08,847 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:00:08,847 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:00:08,848 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:00:08,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:00:08,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1015181846, now seen corresponding path program 6 times [2018-12-01 18:00:08,848 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:00:08,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:00:08,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:08,849 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 18:00:08,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:00:08,917 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:08,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 18:00:08,917 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 18:00:08,923 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 18:00:08,938 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-12-01 18:00:08,938 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 18:00:08,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:00:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:09,046 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 18:00:09,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-12-01 18:00:09,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-01 18:00:09,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-01 18:00:09,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-12-01 18:00:09,047 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 15 states. [2018-12-01 18:00:09,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:00:09,129 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2018-12-01 18:00:09,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-01 18:00:09,129 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-12-01 18:00:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:00:09,130 INFO L225 Difference]: With dead ends: 39 [2018-12-01 18:00:09,130 INFO L226 Difference]: Without dead ends: 34 [2018-12-01 18:00:09,130 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-12-01 18:00:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-01 18:00:09,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-12-01 18:00:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-01 18:00:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2018-12-01 18:00:09,136 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 28 [2018-12-01 18:00:09,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:00:09,136 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2018-12-01 18:00:09,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-01 18:00:09,136 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2018-12-01 18:00:09,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-01 18:00:09,137 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:00:09,137 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:00:09,137 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:00:09,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:00:09,138 INFO L82 PathProgramCache]: Analyzing trace with hash -209588939, now seen corresponding path program 7 times [2018-12-01 18:00:09,138 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:00:09,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:00:09,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:09,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 18:00:09,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:00:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:09,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 18:00:09,235 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 18:00:09,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:00:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:00:09,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:00:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:09,405 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 18:00:09,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-12-01 18:00:09,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-01 18:00:09,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-01 18:00:09,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2018-12-01 18:00:09,406 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 17 states. [2018-12-01 18:00:09,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:00:09,535 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2018-12-01 18:00:09,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-01 18:00:09,535 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2018-12-01 18:00:09,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:00:09,536 INFO L225 Difference]: With dead ends: 42 [2018-12-01 18:00:09,536 INFO L226 Difference]: Without dead ends: 37 [2018-12-01 18:00:09,536 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2018-12-01 18:00:09,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-01 18:00:09,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2018-12-01 18:00:09,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-01 18:00:09,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2018-12-01 18:00:09,539 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 31 [2018-12-01 18:00:09,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:00:09,540 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2018-12-01 18:00:09,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-01 18:00:09,540 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2018-12-01 18:00:09,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-01 18:00:09,540 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:00:09,540 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:00:09,540 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:00:09,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:00:09,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1608865354, now seen corresponding path program 8 times [2018-12-01 18:00:09,540 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 18:00:09,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 18:00:09,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:09,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:00:09,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 18:00:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:00:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:00:09,569 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 18:00:09,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 06:00:09 BoogieIcfgContainer [2018-12-01 18:00:09,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 18:00:09,589 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 18:00:09,589 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 18:00:09,589 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 18:00:09,590 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:00:07" (3/4) ... [2018-12-01 18:00:09,592 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 18:00:09,592 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 18:00:09,592 INFO L168 Benchmark]: Toolchain (without parser) took 2296.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.6 MB). Free memory was 953.3 MB in the beginning and 1.2 GB in the end (delta: -224.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:00:09,593 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:00:09,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 120.65 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 18:00:09,594 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.70 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:00:09,594 INFO L168 Benchmark]: Boogie Preprocessor took 41.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -182.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-12-01 18:00:09,594 INFO L168 Benchmark]: RCFGBuilder took 116.43 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: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2018-12-01 18:00:09,594 INFO L168 Benchmark]: TraceAbstraction took 2001.79 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -67.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-01 18:00:09,595 INFO L168 Benchmark]: Witness Printer took 2.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:00:09,596 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 120.65 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.70 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -182.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 116.43 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: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2001.79 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -67.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftLeft at line 21, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L14] unsigned char x = __VERIFIER_nondet_uchar(); [L15] unsigned char y; [L16] unsigned char c; [L18] y = 0 [L19] c = 0 VAL [c=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=0, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=0, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=1, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=1, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=1, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=2, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=2, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=2, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=3, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=3, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=3, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=4, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=4, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=4, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=5, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=5, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=5, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=6, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=6, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=6, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=7, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=7, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=7, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=8, i=0, x=1, y=0] [L20] COND FALSE !(c < (unsigned char)8) VAL [bit=1, c=8, i=0, x=1, y=0] [L28] CALL __VERIFIER_assert(x == y) VAL [\old(cond)=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. UNSAFE Result, 1.9s OverallTime, 10 OverallIterations, 8 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 173 SDtfs, 130 SDslu, 914 SDs, 0 SdLazy, 667 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 123 SyntacticMatches, 14 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 362 NumberOfCodeBlocks, 362 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 312 ConstructedInterpolants, 70 QuantifiedInterpolants, 68271 SizeOfPredicates, 8 NumberOfNonLiveVariables, 350 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 0/392 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-01 18:00:10,873 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 18:00:10,874 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 18:00:10,880 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 18:00:10,881 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 18:00:10,881 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 18:00:10,882 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 18:00:10,883 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 18:00:10,883 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 18:00:10,884 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 18:00:10,884 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 18:00:10,884 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 18:00:10,885 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 18:00:10,885 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 18:00:10,886 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 18:00:10,886 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 18:00:10,887 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 18:00:10,887 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 18:00:10,888 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 18:00:10,889 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 18:00:10,890 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 18:00:10,890 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 18:00:10,892 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 18:00:10,892 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 18:00:10,892 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 18:00:10,892 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 18:00:10,893 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 18:00:10,893 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 18:00:10,894 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 18:00:10,894 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 18:00:10,894 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 18:00:10,895 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 18:00:10,895 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 18:00:10,895 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 18:00:10,895 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 18:00:10,896 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 18:00:10,896 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-01 18:00:10,903 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 18:00:10,903 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 18:00:10,904 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 18:00:10,904 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 18:00:10,904 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 18:00:10,904 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 18:00:10,905 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 18:00:10,905 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 18:00:10,905 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 18:00:10,905 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 18:00:10,905 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 18:00:10,905 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 18:00:10,905 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 18:00:10,905 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 18:00:10,905 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-01 18:00:10,905 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-01 18:00:10,906 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 18:00:10,906 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 18:00:10,906 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 18:00:10,906 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 18:00:10,906 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 18:00:10,906 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 18:00:10,906 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 18:00:10,906 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 18:00:10,906 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 18:00:10,906 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 18:00:10,906 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 18:00:10,907 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 18:00:10,907 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-01 18:00:10,907 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 18:00:10,907 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-01 18:00:10,907 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-01 18:00:10,907 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_c9a7d0d1-6429-4098-9acd-02a109de635a/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 -> 0b1dd98d7879c6a852477263dd33a13d229a6eb3 [2018-12-01 18:00:10,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 18:00:10,936 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 18:00:10,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 18:00:10,940 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 18:00:10,940 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 18:00:10,941 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-12-01 18:00:10,977 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/data/7900efa42/5845e0f6eabc457dbefdeae790644a5b/FLAG31172a0fd [2018-12-01 18:00:11,432 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 18:00:11,432 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-12-01 18:00:11,436 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/data/7900efa42/5845e0f6eabc457dbefdeae790644a5b/FLAG31172a0fd [2018-12-01 18:00:11,444 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/data/7900efa42/5845e0f6eabc457dbefdeae790644a5b [2018-12-01 18:00:11,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 18:00:11,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 18:00:11,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 18:00:11,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 18:00:11,451 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 18:00:11,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:00:11" (1/1) ... [2018-12-01 18:00:11,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63407dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:11, skipping insertion in model container [2018-12-01 18:00:11,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:00:11" (1/1) ... [2018-12-01 18:00:11,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 18:00:11,472 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 18:00:11,561 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:00:11,564 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 18:00:11,575 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:00:11,584 INFO L195 MainTranslator]: Completed translation [2018-12-01 18:00:11,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:11 WrapperNode [2018-12-01 18:00:11,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 18:00:11,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 18:00:11,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 18:00:11,585 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 18:00:11,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:11" (1/1) ... [2018-12-01 18:00:11,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:11" (1/1) ... [2018-12-01 18:00:11,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 18:00:11,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 18:00:11,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 18:00:11,599 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 18:00:11,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:11" (1/1) ... [2018-12-01 18:00:11,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:11" (1/1) ... [2018-12-01 18:00:11,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:11" (1/1) ... [2018-12-01 18:00:11,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:11" (1/1) ... [2018-12-01 18:00:11,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:11" (1/1) ... [2018-12-01 18:00:11,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:11" (1/1) ... [2018-12-01 18:00:11,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:11" (1/1) ... [2018-12-01 18:00:11,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 18:00:11,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 18:00:11,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 18:00:11,616 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 18:00:11,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 18:00:11,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 18:00:11,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 18:00:11,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 18:00:11,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 18:00:11,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 18:00:11,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 18:00:11,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-01 18:00:11,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-01 18:00:11,766 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 18:00:11,766 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-01 18:00:11,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:00:11 BoogieIcfgContainer [2018-12-01 18:00:11,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 18:00:11,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 18:00:11,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 18:00:11,769 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 18:00:11,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 06:00:11" (1/3) ... [2018-12-01 18:00:11,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15237e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 06:00:11, skipping insertion in model container [2018-12-01 18:00:11,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:00:11" (2/3) ... [2018-12-01 18:00:11,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15237e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 06:00:11, skipping insertion in model container [2018-12-01 18:00:11,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:00:11" (3/3) ... [2018-12-01 18:00:11,771 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2_true-unreach-call_true-no-overflow.i [2018-12-01 18:00:11,777 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 18:00:11,782 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 18:00:11,790 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 18:00:11,810 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 18:00:11,810 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 18:00:11,811 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 18:00:11,811 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 18:00:11,811 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 18:00:11,811 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 18:00:11,811 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 18:00:11,811 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 18:00:11,811 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 18:00:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-12-01 18:00:11,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 18:00:11,824 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:00:11,824 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:00:11,825 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:00:11,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:00:11,828 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2018-12-01 18:00:11,831 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:00:11,831 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 18:00:11,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:00:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:00:11,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:00:11,874 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 18:00:11,875 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 18:00:11,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:00:11,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 18:00:11,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 18:00:11,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 18:00:11,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 18:00:11,890 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-12-01 18:00:11,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:00:11,902 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-12-01 18:00:11,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 18:00:11,903 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-01 18:00:11,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:00:11,907 INFO L225 Difference]: With dead ends: 32 [2018-12-01 18:00:11,907 INFO L226 Difference]: Without dead ends: 13 [2018-12-01 18:00:11,909 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 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 18:00:11,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-01 18:00:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-01 18:00:11,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-01 18:00:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-12-01 18:00:11,930 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-12-01 18:00:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:00:11,930 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-12-01 18:00:11,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 18:00:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-12-01 18:00:11,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 18:00:11,930 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:00:11,930 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:00:11,931 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:00:11,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:00:11,931 INFO L82 PathProgramCache]: Analyzing trace with hash -158041290, now seen corresponding path program 1 times [2018-12-01 18:00:11,931 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:00:11,931 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 18:00:11,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:00:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:00:11,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:00:11,973 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 18:00:11,973 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 18:00:11,974 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 18:00:11,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 18:00:11,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 18:00:11,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 18:00:11,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 18:00:11,976 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2018-12-01 18:00:11,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:00:11,986 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-12-01 18:00:11,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 18:00:11,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-01 18:00:11,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:00:11,987 INFO L225 Difference]: With dead ends: 21 [2018-12-01 18:00:11,987 INFO L226 Difference]: Without dead ends: 16 [2018-12-01 18:00:11,988 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 18:00:11,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-01 18:00:11,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2018-12-01 18:00:11,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-01 18:00:11,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-12-01 18:00:11,990 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-12-01 18:00:11,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:00:11,990 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-12-01 18:00:11,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 18:00:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-12-01 18:00:11,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-01 18:00:11,991 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:00:11,991 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:00:11,991 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:00:11,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:00:11,991 INFO L82 PathProgramCache]: Analyzing trace with hash 743821333, now seen corresponding path program 1 times [2018-12-01 18:00:11,991 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:00:11,992 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 18:00:12,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 18:00:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:00:12,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:00:12,027 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 18:00:12,028 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 18:00:12,048 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 18:00:12,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 18:00:12,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-12-01 18:00:12,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 18:00:12,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 18:00:12,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-01 18:00:12,049 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 6 states. [2018-12-01 18:00:12,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:00:12,088 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2018-12-01 18:00:12,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 18:00:12,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-12-01 18:00:12,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:00:12,089 INFO L225 Difference]: With dead ends: 28 [2018-12-01 18:00:12,089 INFO L226 Difference]: Without dead ends: 23 [2018-12-01 18:00:12,090 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-12-01 18:00:12,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-01 18:00:12,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-01 18:00:12,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-01 18:00:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-12-01 18:00:12,093 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2018-12-01 18:00:12,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:00:12,093 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-12-01 18:00:12,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 18:00:12,093 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-12-01 18:00:12,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-01 18:00:12,094 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:00:12,094 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:00:12,094 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:00:12,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:00:12,094 INFO L82 PathProgramCache]: Analyzing trace with hash 318767734, now seen corresponding path program 2 times [2018-12-01 18:00:12,095 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:00:12,095 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 18:00:12,109 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-01 18:00:12,132 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 18:00:12,132 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 18:00:12,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:00:12,161 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:12,161 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 18:00:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:12,224 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 18:00:12,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-12-01 18:00:12,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-01 18:00:12,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-01 18:00:12,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-12-01 18:00:12,226 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 12 states. [2018-12-01 18:00:12,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:00:12,342 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2018-12-01 18:00:12,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-01 18:00:12,342 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-12-01 18:00:12,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:00:12,343 INFO L225 Difference]: With dead ends: 40 [2018-12-01 18:00:12,343 INFO L226 Difference]: Without dead ends: 35 [2018-12-01 18:00:12,344 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-12-01 18:00:12,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-01 18:00:12,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-01 18:00:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-01 18:00:12,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2018-12-01 18:00:12,350 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 22 [2018-12-01 18:00:12,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:00:12,350 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2018-12-01 18:00:12,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-01 18:00:12,350 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2018-12-01 18:00:12,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-01 18:00:12,351 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:00:12,351 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:00:12,351 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:00:12,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:00:12,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1608865354, now seen corresponding path program 3 times [2018-12-01 18:00:12,352 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:00:12,352 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 18:00:12,365 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-12-01 18:00:12,405 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-12-01 18:00:12,405 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 18:00:12,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:00:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:14,410 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 18:00:20,356 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:00:20,358 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 18:00:20,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 56 [2018-12-01 18:00:20,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-12-01 18:00:20,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-12-01 18:00:20,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=2796, Unknown=0, NotChecked=0, Total=3080 [2018-12-01 18:00:20,359 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 56 states. [2018-12-01 18:00:20,831 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 102 [2018-12-01 18:00:22,928 WARN L180 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 268 DAG size of output: 239 [2018-12-01 18:00:24,863 WARN L180 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 230 DAG size of output: 220 [2018-12-01 18:00:25,226 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 107 [2018-12-01 18:00:26,804 WARN L180 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 209 DAG size of output: 193 [2018-12-01 18:00:28,691 WARN L180 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 230 DAG size of output: 217 [2018-12-01 18:00:29,221 WARN L180 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-12-01 18:00:29,688 WARN L180 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-12-01 18:00:30,802 WARN L180 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-12-01 18:00:31,199 WARN L180 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-12-01 18:00:31,752 WARN L180 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 110 [2018-12-01 18:00:32,090 WARN L180 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 128 [2018-12-01 18:00:33,687 WARN L180 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 143 DAG size of output: 139 [2018-12-01 18:00:35,759 WARN L180 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 268 DAG size of output: 236 [2018-12-01 18:00:36,300 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-12-01 18:00:38,282 WARN L180 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 247 DAG size of output: 228 [2018-12-01 18:00:40,103 WARN L180 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 228 DAG size of output: 209 [2018-12-01 18:00:40,515 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-12-01 18:00:41,489 WARN L180 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 170 [2018-12-01 18:00:42,008 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-12-01 18:00:42,482 WARN L180 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-12-01 18:00:43,261 WARN L180 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 111 [2018-12-01 18:00:44,933 WARN L180 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 140 DAG size of output: 136 [2018-12-01 18:00:45,760 WARN L180 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-12-01 18:00:46,464 WARN L180 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-12-01 18:00:46,798 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2018-12-01 18:00:48,362 WARN L180 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 172 [2018-12-01 18:00:49,292 WARN L180 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 116 [2018-12-01 18:00:51,583 WARN L180 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 250 DAG size of output: 227 [2018-12-01 18:00:54,071 WARN L180 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 234 DAG size of output: 215 [2018-12-01 18:00:56,456 WARN L180 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 232 DAG size of output: 213 [2018-12-01 18:00:57,847 WARN L180 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 189 [2018-12-01 18:00:59,615 WARN L180 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2018-12-01 18:01:01,507 WARN L180 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 218 [2018-12-01 18:01:02,495 WARN L180 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-12-01 18:01:03,742 WARN L180 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 112 [2018-12-01 18:01:04,958 WARN L180 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 116 [2018-12-01 18:01:05,429 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-12-01 18:01:05,779 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-12-01 18:01:07,635 WARN L180 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 165 [2018-12-01 18:01:08,626 WARN L180 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 101 [2018-12-01 18:01:10,478 WARN L180 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 226 DAG size of output: 207 [2018-12-01 18:01:12,315 WARN L180 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 226 DAG size of output: 207 [2018-12-01 18:01:13,993 WARN L180 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 199 [2018-12-01 18:01:16,279 WARN L180 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 211 [2018-12-01 18:01:17,379 WARN L180 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 115 [2018-12-01 18:01:18,177 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 99 [2018-12-01 18:01:20,411 WARN L180 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 301 DAG size of output: 222 [2018-12-01 18:01:21,758 WARN L180 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 133 [2018-12-01 18:01:24,259 WARN L180 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 158 [2018-12-01 18:01:25,881 WARN L180 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 214 [2018-12-01 18:01:28,547 WARN L180 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 310 DAG size of output: 231 [2018-12-01 18:01:29,702 WARN L180 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 131 [2018-12-01 18:01:31,220 WARN L180 SmtUtils]: Spent 970.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 203 [2018-12-01 18:01:33,034 WARN L180 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2018-12-01 18:01:34,762 WARN L180 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 194 [2018-12-01 18:01:37,169 WARN L180 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 208 [2018-12-01 18:01:38,560 WARN L180 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 184 [2018-12-01 18:01:39,440 WARN L180 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 178 [2018-12-01 18:01:40,749 WARN L180 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 129 [2018-12-01 18:01:41,335 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 97 [2018-12-01 18:01:43,516 WARN L180 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 301 DAG size of output: 222 [2018-12-01 18:01:45,917 WARN L180 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 262 DAG size of output: 224 [2018-12-01 18:01:47,876 WARN L180 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 214 [2018-12-01 18:01:49,288 WARN L180 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 147 [2018-12-01 18:01:51,434 WARN L180 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 161 [2018-12-01 18:01:52,991 WARN L180 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 214 [2018-12-01 18:01:55,883 WARN L180 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 310 DAG size of output: 231 [2018-12-01 18:01:57,633 WARN L180 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 217 [2018-12-01 18:02:00,430 WARN L180 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 268 DAG size of output: 230 [2018-12-01 18:02:02,215 WARN L180 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 211 [2018-12-01 18:02:04,726 WARN L180 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 264 DAG size of output: 226 [2018-12-01 18:02:06,098 WARN L180 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 145 [2018-12-01 18:02:07,864 WARN L180 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 219 DAG size of output: 200 [2018-12-01 18:02:09,641 WARN L180 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 197 [2018-12-01 18:02:12,189 WARN L180 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 306 DAG size of output: 230 [2018-12-01 18:02:13,642 WARN L180 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 184 [2018-12-01 18:02:15,334 WARN L180 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 187 [2018-12-01 18:02:16,705 WARN L180 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 181 [2018-12-01 18:02:18,082 WARN L180 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 143 [2018-12-01 18:02:20,319 WARN L180 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 309 DAG size of output: 233 [2018-12-01 18:02:22,754 WARN L180 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 262 DAG size of output: 224 [2018-12-01 18:02:25,767 WARN L180 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 267 DAG size of output: 229 [2018-12-01 18:02:28,245 WARN L180 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 257 DAG size of output: 219 [2018-12-01 18:02:29,905 WARN L180 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 389 DAG size of output: 173 [2018-12-01 18:02:31,709 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 304 DAG size of output: 228 [2018-12-01 18:02:34,433 WARN L180 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 318 DAG size of output: 242 [2018-12-01 18:02:36,191 WARN L180 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 299 DAG size of output: 217 [2018-12-01 18:02:39,056 WARN L180 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 268 DAG size of output: 230 [2018-12-01 18:02:41,022 WARN L180 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 302 DAG size of output: 220 [2018-12-01 18:02:44,075 WARN L180 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 270 DAG size of output: 232 [2018-12-01 18:02:46,056 WARN L180 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 214 [2018-12-01 18:02:48,789 WARN L180 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 266 DAG size of output: 228 [2018-12-01 18:02:50,219 WARN L180 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 159 [2018-12-01 18:02:53,226 WARN L180 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 311 DAG size of output: 234 [2018-12-01 18:02:54,653 WARN L180 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 184 [2018-12-01 18:02:56,513 WARN L180 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 187 [2018-12-01 18:02:58,354 WARN L180 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 190 [2018-12-01 18:02:59,848 WARN L180 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 184 [2018-12-01 18:03:01,364 WARN L180 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 377 DAG size of output: 165 [2018-12-01 18:03:03,344 WARN L180 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 105 [2018-12-01 18:03:06,108 WARN L180 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 155 [2018-12-01 18:03:08,514 WARN L180 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 231 DAG size of output: 192 [2018-12-01 18:03:11,775 WARN L180 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 262 DAG size of output: 224 [2018-12-01 18:03:15,145 WARN L180 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 267 DAG size of output: 229 [2018-12-01 18:03:16,604 WARN L180 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 159 [2018-12-01 18:03:18,351 WARN L180 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 389 DAG size of output: 70 [2018-12-01 18:03:21,215 WARN L180 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 315 DAG size of output: 213 [2018-12-01 18:03:23,377 WARN L180 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 227 [2018-12-01 18:03:26,813 WARN L180 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 313 DAG size of output: 211 [2018-12-01 18:03:29,090 WARN L180 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 363 DAG size of output: 221 [2018-12-01 18:03:30,813 WARN L180 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 207 [2018-12-01 18:03:33,016 WARN L180 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 323 DAG size of output: 223 [2018-12-01 18:03:34,018 WARN L180 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 122 [2018-12-01 18:03:35,908 WARN L180 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 222 DAG size of output: 202 [2018-12-01 18:03:36,725 WARN L180 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 103 [2018-12-01 18:03:37,755 WARN L180 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 194 [2018-12-01 18:03:41,308 WARN L180 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 308 DAG size of output: 231 [2018-12-01 18:03:44,065 WARN L180 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 320 DAG size of output: 243 [2018-12-01 18:03:46,793 WARN L180 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 299 DAG size of output: 217 [2018-12-01 18:03:49,787 WARN L180 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 268 DAG size of output: 230 [2018-12-01 18:03:52,454 WARN L180 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 302 DAG size of output: 220 [2018-12-01 18:03:55,457 WARN L180 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 270 DAG size of output: 232 [2018-12-01 18:03:57,415 WARN L180 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 399 DAG size of output: 167 [2018-12-01 18:04:00,216 WARN L180 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 215 [2018-12-01 18:04:02,243 WARN L180 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 187 [2018-12-01 18:04:04,356 WARN L180 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 190 [2018-12-01 18:04:05,782 WARN L180 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 165 [2018-12-01 18:04:06,224 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-12-01 18:04:09,469 WARN L180 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 285 DAG size of output: 243 [2018-12-01 18:04:11,029 WARN L180 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2018-12-01 18:04:14,408 WARN L180 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 272 DAG size of output: 234 [2018-12-01 18:04:16,683 WARN L180 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 392 DAG size of output: 187 [2018-12-01 18:04:18,686 WARN L180 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 224 DAG size of output: 205 [2018-12-01 18:04:21,405 WARN L180 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 214 DAG size of output: 200 [2018-12-01 18:04:23,479 WARN L180 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 246 DAG size of output: 224 [2018-12-01 18:04:25,704 WARN L180 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 305 DAG size of output: 223 [2018-12-01 18:04:29,096 WARN L180 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 325 DAG size of output: 245 [2018-12-01 18:04:30,470 WARN L180 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2018-12-01 18:04:32,667 WARN L180 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 221 DAG size of output: 212 [2018-12-01 18:04:34,649 WARN L180 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 193 [2018-12-01 18:04:38,245 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 303 DAG size of output: 218 [2018-12-01 18:04:39,923 WARN L180 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-12-01 18:04:41,983 WARN L180 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 224 DAG size of output: 215 [2018-12-01 18:04:44,880 WARN L180 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 199 [2018-12-01 18:04:46,848 WARN L180 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2018-12-01 18:04:47,475 WARN L180 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-12-01 18:04:49,719 WARN L180 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 245 DAG size of output: 226 [2018-12-01 18:04:51,552 WARN L180 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 202 DAG size of output: 187 [2018-12-01 18:04:53,808 WARN L180 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 265 DAG size of output: 237 [2018-12-01 18:04:58,294 WARN L180 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 315 DAG size of output: 237 [2018-12-01 18:05:00,891 WARN L180 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 312 DAG size of output: 208 [2018-12-01 18:05:01,649 WARN L180 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2018-12-01 18:05:02,294 WARN L180 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-12-01 18:05:02,849 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-12-01 18:05:07,706 WARN L180 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 322 DAG size of output: 243 [2018-12-01 18:05:08,378 WARN L180 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-12-01 18:05:12,207 WARN L180 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 325 DAG size of output: 246 [2018-12-01 18:05:14,495 WARN L180 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 242 DAG size of output: 223 [2018-12-01 18:05:18,350 WARN L180 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 328 DAG size of output: 249 [2018-12-01 18:05:19,646 WARN L180 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-12-01 18:05:21,927 WARN L180 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 230 DAG size of output: 211 [2018-12-01 18:05:24,487 WARN L180 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 224 DAG size of output: 205 [2018-12-01 18:05:24,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:05:24,695 INFO L93 Difference]: Finished difference Result 441 states and 585 transitions. [2018-12-01 18:05:24,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-12-01 18:05:24,695 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 34 [2018-12-01 18:05:24,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:05:24,698 INFO L225 Difference]: With dead ends: 441 [2018-12-01 18:05:24,698 INFO L226 Difference]: Without dead ends: 430 [2018-12-01 18:05:24,709 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23821 ImplicationChecksByTransitivity, 290.6s TimeCoverageRelationStatistics Valid=7532, Invalid=61374, Unknown=0, NotChecked=0, Total=68906 [2018-12-01 18:05:24,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-12-01 18:05:24,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 287. [2018-12-01 18:05:24,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-12-01 18:05:24,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 396 transitions. [2018-12-01 18:05:24,776 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 396 transitions. Word has length 34 [2018-12-01 18:05:24,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:05:24,776 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 396 transitions. [2018-12-01 18:05:24,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-12-01 18:05:24,776 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 396 transitions. [2018-12-01 18:05:24,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-01 18:05:24,777 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:05:24,778 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:05:24,778 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:05:24,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:05:24,778 INFO L82 PathProgramCache]: Analyzing trace with hash -226885002, now seen corresponding path program 1 times [2018-12-01 18:05:24,778 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:05:24,778 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/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 18:05:24,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 18:05:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:05:24,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:05:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:05:25,525 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 18:05:29,203 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 7 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:05:29,205 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 18:05:29,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2018-12-01 18:05:29,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-12-01 18:05:29,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-12-01 18:05:29,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=2533, Unknown=0, NotChecked=0, Total=2862 [2018-12-01 18:05:29,206 INFO L87 Difference]: Start difference. First operand 287 states and 396 transitions. Second operand 54 states. [2018-12-01 18:05:29,909 WARN L180 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 159 [2018-12-01 18:05:30,332 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-12-01 18:05:31,085 WARN L180 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 147 [2018-12-01 18:05:31,845 WARN L180 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-12-01 18:05:32,375 WARN L180 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2018-12-01 18:05:33,362 WARN L180 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 137 [2018-12-01 18:05:33,644 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-12-01 18:05:34,253 WARN L180 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-12-01 18:05:35,004 WARN L180 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-12-01 18:05:35,463 WARN L180 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-12-01 18:05:36,675 WARN L180 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-12-01 18:05:37,674 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2018-12-01 18:05:38,248 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 113 [2018-12-01 18:05:39,011 WARN L180 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 135 [2018-12-01 18:05:40,237 WARN L180 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2018-12-01 18:05:41,041 WARN L180 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-12-01 18:05:41,734 WARN L180 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-12-01 18:05:44,090 WARN L180 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2018-12-01 18:05:44,462 WARN L180 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2018-12-01 18:05:45,559 WARN L180 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-12-01 18:05:45,868 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-12-01 18:05:46,430 WARN L180 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 100 [2018-12-01 18:05:47,461 WARN L180 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 148 [2018-12-01 18:05:49,923 WARN L180 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-12-01 18:05:50,240 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-12-01 18:05:50,938 WARN L180 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-12-01 18:05:51,695 WARN L180 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-12-01 18:05:52,354 WARN L180 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2018-12-01 18:05:56,037 WARN L180 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2018-12-01 18:05:56,446 WARN L180 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-12-01 18:05:56,811 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-12-01 18:05:57,138 WARN L180 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-12-01 18:05:58,296 WARN L180 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-12-01 18:05:58,776 WARN L180 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-12-01 18:06:00,797 WARN L180 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 170 DAG size of output: 153 [2018-12-01 18:06:01,166 WARN L180 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-12-01 18:06:01,920 WARN L180 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-12-01 18:06:02,854 WARN L180 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-12-01 18:06:03,599 WARN L180 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-12-01 18:06:04,243 WARN L180 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-12-01 18:06:07,066 WARN L180 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-12-01 18:06:07,487 WARN L180 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-12-01 18:06:07,865 WARN L180 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-12-01 18:06:08,183 WARN L180 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-12-01 18:06:11,913 WARN L180 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2018-12-01 18:06:12,624 WARN L180 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-12-01 18:06:13,087 WARN L180 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-12-01 18:06:13,598 WARN L180 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-12-01 18:06:13,973 WARN L180 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-12-01 18:06:15,907 WARN L180 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 182 DAG size of output: 132 [2018-12-01 18:06:17,550 WARN L180 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 174 DAG size of output: 156 [2018-12-01 18:06:20,304 WARN L180 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 184 DAG size of output: 179 [2018-12-01 18:06:21,602 WARN L180 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 154 [2018-12-01 18:06:21,868 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-12-01 18:06:22,542 WARN L180 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-12-01 18:06:23,641 WARN L180 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 149 [2018-12-01 18:06:24,834 WARN L180 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 144 [2018-12-01 18:06:25,644 WARN L180 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2018-12-01 18:06:26,131 WARN L180 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-12-01 18:06:26,664 WARN L180 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-12-01 18:06:26,907 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2018-12-01 18:06:27,356 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-12-01 18:06:27,633 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-12-01 18:06:28,541 WARN L180 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-12-01 18:06:29,233 WARN L180 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-12-01 18:06:29,738 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-12-01 18:06:31,325 WARN L180 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 134 [2018-12-01 18:06:32,602 WARN L180 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 119 [2018-12-01 18:06:33,867 WARN L180 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 133 [2018-12-01 18:06:34,334 WARN L180 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2018-12-01 18:06:35,211 WARN L180 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-12-01 18:06:36,084 WARN L180 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 139 [2018-12-01 18:06:36,760 WARN L180 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 88 [2018-12-01 18:06:37,520 WARN L180 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 64 [2018-12-01 18:06:38,896 WARN L180 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 118 [2018-12-01 18:06:40,033 WARN L180 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 118 [2018-12-01 18:06:40,932 WARN L180 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2018-12-01 18:06:41,296 WARN L180 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-12-01 18:06:42,168 WARN L180 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-12-01 18:06:43,156 WARN L180 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 121 [2018-12-01 18:06:43,830 WARN L180 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2018-12-01 18:06:44,729 WARN L180 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 122 [2018-12-01 18:06:46,029 WARN L180 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 130 [2018-12-01 18:06:46,832 WARN L180 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 131 [2018-12-01 18:06:48,192 WARN L180 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 161 DAG size of output: 141 [2018-12-01 18:06:48,754 WARN L180 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 103 [2018-12-01 18:06:49,304 WARN L180 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 112 [2018-12-01 18:06:50,238 WARN L180 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 119 [2018-12-01 18:06:50,623 WARN L180 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 100 [2018-12-01 18:06:51,023 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 109 [2018-12-01 18:06:51,657 WARN L180 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2018-12-01 18:06:51,979 WARN L180 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 88 [2018-12-01 18:06:52,332 WARN L180 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 97 [2018-12-01 18:06:52,764 WARN L180 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-12-01 18:06:53,295 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2018-12-01 18:06:53,571 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2018-12-01 18:06:53,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:06:53,764 INFO L93 Difference]: Finished difference Result 608 states and 856 transitions. [2018-12-01 18:06:53,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-12-01 18:06:53,764 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 34 [2018-12-01 18:06:53,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:06:53,766 INFO L225 Difference]: With dead ends: 608 [2018-12-01 18:06:53,766 INFO L226 Difference]: Without dead ends: 568 [2018-12-01 18:06:53,768 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11941 ImplicationChecksByTransitivity, 84.0s TimeCoverageRelationStatistics Valid=4953, Invalid=35649, Unknown=0, NotChecked=0, Total=40602 [2018-12-01 18:06:53,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2018-12-01 18:06:53,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 489. [2018-12-01 18:06:53,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2018-12-01 18:06:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 687 transitions. [2018-12-01 18:06:53,870 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 687 transitions. Word has length 34 [2018-12-01 18:06:53,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:06:53,870 INFO L480 AbstractCegarLoop]: Abstraction has 489 states and 687 transitions. [2018-12-01 18:06:53,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-12-01 18:06:53,870 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 687 transitions. [2018-12-01 18:06:53,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-01 18:06:53,872 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:06:53,872 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:06:53,872 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:06:53,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:06:53,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1706268918, now seen corresponding path program 2 times [2018-12-01 18:06:53,872 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:06:53,872 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 18:06:53,887 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-01 18:06:53,914 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 18:06:53,914 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 18:06:53,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:06:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:06:54,654 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 18:06:58,475 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:06:58,477 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 18:06:58,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2018-12-01 18:06:58,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-12-01 18:06:58,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-12-01 18:06:58,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=2485, Unknown=0, NotChecked=0, Total=2862 [2018-12-01 18:06:58,478 INFO L87 Difference]: Start difference. First operand 489 states and 687 transitions. Second operand 54 states. [2018-12-01 18:07:00,362 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 182 DAG size of output: 150 [2018-12-01 18:07:01,215 WARN L180 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-12-01 18:07:02,177 WARN L180 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 138 [2018-12-01 18:07:04,115 WARN L180 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 192 DAG size of output: 156 [2018-12-01 18:07:06,354 WARN L180 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2018-12-01 18:07:06,770 WARN L180 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-12-01 18:07:07,097 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-12-01 18:07:08,352 WARN L180 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 157 [2018-12-01 18:07:08,706 WARN L180 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-12-01 18:07:09,529 WARN L180 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 129 [2018-12-01 18:07:10,488 WARN L180 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 124 [2018-12-01 18:07:12,502 WARN L180 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 202 DAG size of output: 162 [2018-12-01 18:07:12,846 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-12-01 18:07:13,183 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-12-01 18:07:15,364 WARN L180 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 194 DAG size of output: 186 [2018-12-01 18:07:15,860 WARN L180 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-12-01 18:07:16,232 WARN L180 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-12-01 18:07:18,029 WARN L180 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 169 [2018-12-01 18:07:18,397 WARN L180 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-12-01 18:07:19,370 WARN L180 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 134 [2018-12-01 18:07:20,457 WARN L180 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 126 [2018-12-01 18:07:21,220 WARN L180 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 100 [2018-12-01 18:07:22,215 WARN L180 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 121 [2018-12-01 18:07:24,569 WARN L180 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 212 DAG size of output: 168 [2018-12-01 18:07:24,945 WARN L180 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-12-01 18:07:25,339 WARN L180 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-12-01 18:07:25,637 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-12-01 18:07:28,132 WARN L180 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 210 DAG size of output: 198 [2018-12-01 18:07:28,728 WARN L180 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-12-01 18:07:29,163 WARN L180 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-12-01 18:07:29,466 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-12-01 18:07:31,472 WARN L180 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 204 DAG size of output: 180 [2018-12-01 18:07:31,854 WARN L180 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-12-01 18:07:33,059 WARN L180 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 139 [2018-12-01 18:07:33,350 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-12-01 18:07:34,272 WARN L180 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 131 [2018-12-01 18:07:35,353 WARN L180 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 123 [2018-12-01 18:07:36,289 WARN L180 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 118 [2018-12-01 18:07:38,841 WARN L180 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 223 DAG size of output: 175 [2018-12-01 18:07:39,244 WARN L180 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-12-01 18:07:39,668 WARN L180 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-12-01 18:07:39,974 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-12-01 18:07:42,961 WARN L180 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2018-12-01 18:07:43,630 WARN L180 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-12-01 18:07:44,075 WARN L180 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-12-01 18:07:44,419 WARN L180 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-12-01 18:07:46,771 WARN L180 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 226 DAG size of output: 150 [2018-12-01 18:07:48,526 WARN L180 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 214 DAG size of output: 186 [2018-12-01 18:07:50,923 WARN L180 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 222 DAG size of output: 174 [2018-12-01 18:07:52,191 WARN L180 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 144 [2018-12-01 18:07:53,233 WARN L180 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 136 [2018-12-01 18:07:54,181 WARN L180 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 128 [2018-12-01 18:07:55,191 WARN L180 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 120 [2018-12-01 18:07:55,962 WARN L180 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 115 [2018-12-01 18:07:56,708 WARN L180 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-12-01 18:07:57,605 WARN L180 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-12-01 18:07:59,619 WARN L180 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 225 DAG size of output: 149 [2018-12-01 18:08:00,900 WARN L180 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 128 [2018-12-01 18:08:01,538 WARN L180 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 105 [2018-12-01 18:08:02,234 WARN L180 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 105 [2018-12-01 18:08:02,748 WARN L180 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-12-01 18:08:04,128 WARN L180 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 41 [2018-12-01 18:08:05,298 WARN L180 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 117 [2018-12-01 18:08:06,060 WARN L180 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 112 [2018-12-01 18:08:06,627 WARN L180 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 30 [2018-12-01 18:08:07,235 WARN L180 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 43 [2018-12-01 18:08:08,184 WARN L180 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 120 [2018-12-01 18:08:09,110 WARN L180 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 119 [2018-12-01 18:08:10,111 WARN L180 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 124 [2018-12-01 18:08:10,892 WARN L180 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 128 [2018-12-01 18:08:11,481 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 115 [2018-12-01 18:08:12,598 WARN L180 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 129 [2018-12-01 18:08:13,410 WARN L180 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 101 [2018-12-01 18:08:14,013 WARN L180 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 47 [2018-12-01 18:08:14,882 WARN L180 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 120 [2018-12-01 18:08:15,459 WARN L180 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 58 [2018-12-01 18:08:16,042 WARN L180 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 120 [2018-12-01 18:08:16,654 WARN L180 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 57 [2018-12-01 18:08:17,092 WARN L180 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 37 [2018-12-01 18:08:17,787 WARN L180 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 120 [2018-12-01 18:08:18,287 WARN L180 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 59 [2018-12-01 18:08:18,856 WARN L180 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 61 [2018-12-01 18:08:19,244 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 51 [2018-12-01 18:08:20,290 WARN L180 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 124 [2018-12-01 18:08:21,144 WARN L180 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 109 [2018-12-01 18:08:21,955 WARN L180 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 108 [2018-12-01 18:08:22,924 WARN L180 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 111 [2018-12-01 18:08:23,923 WARN L180 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 111 [2018-12-01 18:08:24,728 WARN L180 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 102 [2018-12-01 18:08:25,231 WARN L180 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 96 [2018-12-01 18:08:25,938 WARN L180 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 101 [2018-12-01 18:08:26,767 WARN L180 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 105 [2018-12-01 18:08:28,026 WARN L180 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 127 [2018-12-01 18:08:28,770 WARN L180 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 107 [2018-12-01 18:08:29,294 WARN L180 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 59 [2018-12-01 18:08:29,942 WARN L180 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 52 [2018-12-01 18:08:30,841 WARN L180 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 127 [2018-12-01 18:08:31,927 WARN L180 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 113 [2018-12-01 18:08:31,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 18:08:31,965 INFO L93 Difference]: Finished difference Result 811 states and 1139 transitions. [2018-12-01 18:08:31,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-12-01 18:08:31,967 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 34 [2018-12-01 18:08:31,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 18:08:31,968 INFO L225 Difference]: With dead ends: 811 [2018-12-01 18:08:31,969 INFO L226 Difference]: Without dead ends: 757 [2018-12-01 18:08:31,970 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12076 ImplicationChecksByTransitivity, 93.1s TimeCoverageRelationStatistics Valid=5879, Invalid=35127, Unknown=0, NotChecked=0, Total=41006 [2018-12-01 18:08:31,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2018-12-01 18:08:32,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 660. [2018-12-01 18:08:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2018-12-01 18:08:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 928 transitions. [2018-12-01 18:08:32,114 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 928 transitions. Word has length 34 [2018-12-01 18:08:32,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 18:08:32,115 INFO L480 AbstractCegarLoop]: Abstraction has 660 states and 928 transitions. [2018-12-01 18:08:32,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-12-01 18:08:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 928 transitions. [2018-12-01 18:08:32,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-01 18:08:32,116 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 18:08:32,116 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 18:08:32,116 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 18:08:32,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:08:32,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1272006578, now seen corresponding path program 3 times [2018-12-01 18:08:32,116 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 18:08:32,116 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9a7d0d1-6429-4098-9acd-02a109de635a/bin-2019/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 18:08:32,129 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-12-01 18:08:32,159 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-12-01 18:08:32,160 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 18:08:32,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 18:08:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:08:33,871 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 18:08:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:08:38,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 18:08:38,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 56 [2018-12-01 18:08:38,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-12-01 18:08:38,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-12-01 18:08:38,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=2674, Unknown=0, NotChecked=0, Total=3080 [2018-12-01 18:08:38,692 INFO L87 Difference]: Start difference. First operand 660 states and 928 transitions. Second operand 56 states. [2018-12-01 18:08:39,135 WARN L180 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 98 [2018-12-01 18:08:40,677 WARN L180 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 238 DAG size of output: 217 [2018-12-01 18:08:41,773 WARN L180 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 199 [2018-12-01 18:08:42,177 WARN L180 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 108 [2018-12-01 18:08:42,969 WARN L180 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 159 [2018-12-01 18:08:45,602 WARN L180 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 256 DAG size of output: 251 [2018-12-01 18:08:46,494 WARN L180 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-12-01 18:08:47,210 WARN L180 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-12-01 18:08:47,592 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-12-01 18:08:48,570 WARN L180 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 194 [2018-12-01 18:08:48,857 WARN L180 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 120 [2018-12-01 18:08:50,350 WARN L180 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 217 DAG size of output: 196 [2018-12-01 18:08:52,900 WARN L180 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 269 DAG size of output: 248 [2018-12-01 18:08:53,344 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-12-01 18:08:54,584 WARN L180 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 194 [2018-12-01 18:08:55,985 WARN L180 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 195 [2018-12-01 18:08:56,784 WARN L180 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 150 [2018-12-01 18:08:58,463 WARN L180 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 288 DAG size of output: 210 [2018-12-01 18:08:59,084 WARN L180 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-12-01 18:08:59,731 WARN L180 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-12-01 18:09:01,346 WARN L180 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 159 [2018-12-01 18:09:03,859 WARN L180 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 270 DAG size of output: 207 [2018-12-01 18:09:05,084 WARN L180 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-12-01 18:09:05,973 WARN L180 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2018-12-01 18:09:06,456 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-12-01 18:09:07,974 WARN L180 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 167 [2018-12-01 18:09:09,790 WARN L180 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 310 DAG size of output: 195 [2018-12-01 18:09:11,457 WARN L180 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 248 DAG size of output: 227 [2018-12-01 18:09:14,226 WARN L180 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 283 DAG size of output: 220 [2018-12-01 18:09:15,276 WARN L180 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 191 [2018-12-01 18:09:17,144 WARN L180 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 229 DAG size of output: 213 [2018-12-01 18:09:17,520 WARN L180 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-12-01 18:09:19,160 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 227 DAG size of output: 211 [2018-12-01 18:09:20,816 WARN L180 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 184 [2018-12-01 18:09:21,889 WARN L180 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 177 [2018-12-01 18:09:23,117 WARN L180 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 178 [2018-12-01 18:09:24,121 WARN L180 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 182 [2018-12-01 18:09:24,907 WARN L180 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 147 [2018-12-01 18:09:26,353 WARN L180 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 185 [2018-12-01 18:09:27,045 WARN L180 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-12-01 18:09:29,035 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 244 DAG size of output: 212 [2018-12-01 18:09:29,510 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-12-01 18:09:30,074 WARN L180 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-12-01 18:09:31,420 WARN L180 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 149 [2018-12-01 18:09:32,765 WARN L180 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 149 [2018-12-01 18:09:34,365 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2018-12-01 18:09:36,830 WARN L180 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 258 DAG size of output: 226 [2018-12-01 18:09:38,360 WARN L180 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 203 [2018-12-01 18:09:38,967 WARN L180 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-12-01 18:09:41,494 WARN L180 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 277 DAG size of output: 213 [2018-12-01 18:09:43,214 WARN L180 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 169 [2018-12-01 18:09:45,131 WARN L180 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 307 DAG size of output: 192 [2018-12-01 18:09:46,613 WARN L180 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 160 [2018-12-01 18:09:48,165 WARN L180 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 217 [2018-12-01 18:09:50,090 WARN L180 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 269 DAG size of output: 205 [2018-12-01 18:09:52,321 WARN L180 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 255 DAG size of output: 223 [2018-12-01 18:09:54,005 WARN L180 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 214 [2018-12-01 18:09:55,892 WARN L180 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 188 [2018-12-01 18:09:56,921 WARN L180 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 182 [2018-12-01 18:09:57,996 WARN L180 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 172 [2018-12-01 18:09:59,062 WARN L180 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 175 [2018-12-01 18:09:59,564 WARN L180 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-12-01 18:10:00,615 WARN L180 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 146 [2018-12-01 18:10:01,804 WARN L180 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 194 [2018-12-01 18:10:02,361 WARN L180 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 143 [2018-12-01 18:10:03,480 WARN L180 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 181 [2018-12-01 18:10:04,239 WARN L180 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-12-01 18:10:06,787 WARN L180 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 236 DAG size of output: 204 [2018-12-01 18:10:08,270 WARN L180 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 148 [2018-12-01 18:10:09,403 WARN L180 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 147 [2018-12-01 18:10:11,010 WARN L180 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 191 [2018-12-01 18:10:13,335 WARN L180 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 240 DAG size of output: 208 [2018-12-01 18:10:14,474 WARN L180 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-12-01 18:10:16,997 WARN L180 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 199 [2018-12-01 18:10:18,934 WARN L180 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 239 DAG size of output: 207 [2018-12-01 18:10:19,410 WARN L180 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2018-12-01 18:10:20,327 WARN L180 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 150 [2018-12-01 18:10:21,233 WARN L180 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 144 [2018-12-01 18:10:22,608 WARN L180 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 120 [2018-12-01 18:10:24,401 WARN L180 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 197 [2018-12-01 18:10:26,363 WARN L180 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 242 DAG size of output: 210 [2018-12-01 18:10:27,523 WARN L180 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 194 [2018-12-01 18:10:29,557 WARN L180 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 202 [2018-12-01 18:10:30,727 WARN L180 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 180 [2018-12-01 18:10:31,713 WARN L180 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 185 [2018-12-01 18:10:35,136 WARN L180 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 286 DAG size of output: 225 [2018-12-01 18:10:36,250 WARN L180 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 140 [2018-12-01 18:10:37,247 WARN L180 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 118 [2018-12-01 18:10:37,830 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-12-01 18:10:38,394 WARN L180 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-12-01 18:10:41,440 WARN L180 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 291 DAG size of output: 230 [2018-12-01 18:10:45,296 WARN L180 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 186 [2018-12-01 18:10:47,792 WARN L180 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 271 DAG size of output: 207 [2018-12-01 18:10:50,754 WARN L180 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 294 DAG size of output: 233 [2018-12-01 18:10:51,883 WARN L180 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 115 [2018-12-01 18:10:54,181 WARN L180 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 191 [2018-12-01 18:10:54,544 WARN L180 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-12-01 18:10:56,331 WARN L180 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 194 [2018-12-01 18:10:57,242 WARN L180 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 149 [2018-12-01 18:11:00,039 WARN L180 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 270 DAG size of output: 206 [2018-12-01 18:11:02,770 WARN L180 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 275 DAG size of output: 211 [2018-12-01 18:11:03,804 WARN L180 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 156 [2018-12-01 18:11:05,732 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 266 DAG size of output: 202 [2018-12-01 18:11:07,983 WARN L180 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 270 DAG size of output: 206 [2018-12-01 18:11:09,231 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 96 [2018-12-01 18:11:11,884 WARN L180 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 272 DAG size of output: 208 [2018-12-01 18:11:13,139 WARN L180 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 158 [2018-12-01 18:11:14,226 WARN L180 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 178 [2018-12-01 18:11:15,449 WARN L180 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 167 [2018-12-01 18:11:18,515 WARN L180 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 295 DAG size of output: 233 [2018-12-01 18:11:19,455 WARN L180 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 156 [2018-12-01 18:11:21,494 WARN L180 SmtUtils]: Spent 994.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 196 [2018-12-01 18:11:21,913 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2018-12-01 18:11:22,486 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 159 [2018-12-01 18:11:25,337 WARN L180 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 234 DAG size of output: 220 [2018-12-01 18:11:27,707 WARN L180 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 215 DAG size of output: 211 [2018-12-01 18:11:30,374 WARN L180 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 295 DAG size of output: 220 [2018-12-01 18:11:31,367 WARN L180 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 156 [2018-12-01 18:11:32,426 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 52 [2018-12-01 18:11:33,958 WARN L180 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 148 [2018-12-01 18:11:35,100 WARN L180 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 137 [2018-12-01 18:11:37,759 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 308 DAG size of output: 223 [2018-12-01 18:11:39,993 WARN L180 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-12-01 18:11:41,329 WARN L180 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 163 [2018-12-01 18:11:43,402 WARN L180 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 231 DAG size of output: 199 [2018-12-01 18:11:44,314 WARN L180 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 169 [2018-12-01 18:11:46,907 WARN L180 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 278 DAG size of output: 213 [2018-12-01 18:11:49,986 WARN L180 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 298 DAG size of output: 236 [2018-12-01 18:11:51,318 WARN L180 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 176 [2018-12-01 18:11:54,128 WARN L180 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 197 [2018-12-01 18:11:56,397 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-01 18:11:56,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-12-01 18:11:56,398 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:191) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:151) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:354) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:382) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:699) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 49 more [2018-12-01 18:11:56,401 INFO L168 Benchmark]: Toolchain (without parser) took 704954.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -76.4 MB). Peak memory consumption was 326.5 MB. Max. memory is 11.5 GB. [2018-12-01 18:11:56,401 INFO L168 Benchmark]: CDTParser took 0.16 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 18:11:56,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.65 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-01 18:11:56,402 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.98 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:11:56,402 INFO L168 Benchmark]: Boogie Preprocessor took 16.61 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-01 18:11:56,402 INFO L168 Benchmark]: RCFGBuilder took 150.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-01 18:11:56,402 INFO L168 Benchmark]: TraceAbstraction took 704633.73 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.1 MB). Peak memory consumption was 359.1 MB. Max. memory is 11.5 GB. [2018-12-01 18:11:56,403 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 136.65 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.98 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.61 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 150.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 704633.73 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.1 MB). Peak memory consumption was 359.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...