./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 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/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_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/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_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/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_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/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 0.1.23-0cd3be1 [2018-11-28 13:26:59,189 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:26:59,190 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:26:59,198 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:26:59,198 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:26:59,198 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:26:59,199 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:26:59,200 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:26:59,201 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:26:59,202 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:26:59,202 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:26:59,203 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:26:59,203 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:26:59,204 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:26:59,205 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:26:59,205 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:26:59,206 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:26:59,206 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:26:59,208 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:26:59,208 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:26:59,209 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:26:59,210 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:26:59,212 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:26:59,212 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:26:59,212 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:26:59,215 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:26:59,216 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:26:59,216 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:26:59,217 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:26:59,217 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:26:59,217 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:26:59,218 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:26:59,218 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:26:59,218 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:26:59,219 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:26:59,219 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:26:59,219 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 13:26:59,226 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:26:59,227 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:26:59,227 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:26:59,227 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:26:59,228 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:26:59,228 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:26:59,228 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:26:59,228 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:26:59,228 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:26:59,229 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:26:59,229 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:26:59,229 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:26:59,229 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:26:59,229 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:26:59,229 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:26:59,229 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:26:59,230 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:26:59,230 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:26:59,230 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:26:59,230 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:26:59,230 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:26:59,230 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:26:59,231 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:26:59,231 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:26:59,231 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:26:59,231 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:26:59,231 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:26:59,231 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:26:59,231 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:26:59,232 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 13:26:59,232 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_5f7a0591-44e6-4970-b25b-66d2e336db2b/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 [2018-11-28 13:26:59,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:26:59,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:26:59,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:26:59,268 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:26:59,268 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:26:59,269 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-28 13:26:59,314 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/data/d0216cac5/62def3f283944d009260962ac29364b5/FLAGff0d3fe9a [2018-11-28 13:26:59,651 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:26:59,652 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-28 13:26:59,656 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/data/d0216cac5/62def3f283944d009260962ac29364b5/FLAGff0d3fe9a [2018-11-28 13:26:59,667 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/data/d0216cac5/62def3f283944d009260962ac29364b5 [2018-11-28 13:26:59,670 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:26:59,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:26:59,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:26:59,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:26:59,675 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:26:59,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:26:59" (1/1) ... [2018-11-28 13:26:59,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b18db45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:26:59, skipping insertion in model container [2018-11-28 13:26:59,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:26:59" (1/1) ... [2018-11-28 13:26:59,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:26:59,696 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:26:59,813 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:26:59,816 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:26:59,826 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:26:59,835 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:26:59,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:26:59 WrapperNode [2018-11-28 13:26:59,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:26:59,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:26:59,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:26:59,836 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:26:59,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:26:59" (1/1) ... [2018-11-28 13:26:59,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:26:59" (1/1) ... [2018-11-28 13:26:59,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:26:59,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:26:59,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:26:59,850 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:26:59,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:26:59" (1/1) ... [2018-11-28 13:26:59,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:26:59" (1/1) ... [2018-11-28 13:26:59,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:26:59" (1/1) ... [2018-11-28 13:26:59,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:26:59" (1/1) ... [2018-11-28 13:26:59,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:26:59" (1/1) ... [2018-11-28 13:26:59,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:26:59" (1/1) ... [2018-11-28 13:26:59,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:26:59" (1/1) ... [2018-11-28 13:26:59,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:26:59,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:26:59,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:26:59,901 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:26:59,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:26:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:26:59,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:26:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:26:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:26:59,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:26:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:26:59,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:26:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 13:26:59,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 13:27:00,034 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:27:00,034 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 13:27:00,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:27:00 BoogieIcfgContainer [2018-11-28 13:27:00,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:27:00,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:27:00,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:27:00,038 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:27:00,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:26:59" (1/3) ... [2018-11-28 13:27:00,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724693c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:27:00, skipping insertion in model container [2018-11-28 13:27:00,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:26:59" (2/3) ... [2018-11-28 13:27:00,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724693c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:27:00, skipping insertion in model container [2018-11-28 13:27:00,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:27:00" (3/3) ... [2018-11-28 13:27:00,041 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-28 13:27:00,047 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:27:00,054 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 13:27:00,068 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 13:27:00,093 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:27:00,094 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:27:00,094 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:27:00,094 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:27:00,094 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:27:00,094 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:27:00,094 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:27:00,094 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:27:00,095 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:27:00,105 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-28 13:27:00,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 13:27:00,108 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:00,109 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:00,110 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:27:00,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:00,113 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2018-11-28 13:27:00,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:27:00,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:27:00,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:00,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:27:00,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:00,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:27:00,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:27:00,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 13:27:00,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 13:27:00,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 13:27:00,195 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-28 13:27:00,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:00,208 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-28 13:27:00,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 13:27:00,209 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-28 13:27:00,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:00,214 INFO L225 Difference]: With dead ends: 32 [2018-11-28 13:27:00,214 INFO L226 Difference]: Without dead ends: 13 [2018-11-28 13:27:00,216 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 13:27:00,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-28 13:27:00,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-28 13:27:00,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-28 13:27:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-11-28 13:27:00,239 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-11-28 13:27:00,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:00,240 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-28 13:27:00,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 13:27:00,240 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-11-28 13:27:00,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 13:27:00,240 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:00,241 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:00,241 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:27:00,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:00,241 INFO L82 PathProgramCache]: Analyzing trace with hash -158041290, now seen corresponding path program 1 times [2018-11-28 13:27:00,242 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:27:00,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:27:00,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:00,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:27:00,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:00,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:00,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:27:00,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:27:00,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:27:00,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:27:00,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:27:00,315 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2018-11-28 13:27:00,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:00,324 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-11-28 13:27:00,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:27:00,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 13:27:00,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:00,325 INFO L225 Difference]: With dead ends: 21 [2018-11-28 13:27:00,325 INFO L226 Difference]: Without dead ends: 16 [2018-11-28 13:27:00,325 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:27:00,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-28 13:27:00,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2018-11-28 13:27:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 13:27:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-11-28 13:27:00,328 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-11-28 13:27:00,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:00,328 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-28 13:27:00,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:27:00,328 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-28 13:27:00,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 13:27:00,329 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:00,329 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:00,329 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:27:00,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:00,329 INFO L82 PathProgramCache]: Analyzing trace with hash 743821333, now seen corresponding path program 1 times [2018-11-28 13:27:00,330 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:27:00,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:27:00,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:00,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:27:00,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:00,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:00,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:27:00,375 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:27:00,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:27:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:00,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:27:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:00,450 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:27:00,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-28 13:27:00,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:27:00,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:27:00,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:27:00,451 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2018-11-28 13:27:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:00,470 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2018-11-28 13:27:00,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:27:00,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-28 13:27:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:00,471 INFO L225 Difference]: With dead ends: 24 [2018-11-28 13:27:00,471 INFO L226 Difference]: Without dead ends: 19 [2018-11-28 13:27:00,471 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 [2018-11-28 13:27:00,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-28 13:27:00,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-11-28 13:27:00,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 13:27:00,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-11-28 13:27:00,474 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2018-11-28 13:27:00,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:00,475 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-11-28 13:27:00,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:27:00,475 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-11-28 13:27:00,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 13:27:00,475 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:00,475 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:00,475 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:27:00,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:00,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1182180650, now seen corresponding path program 2 times [2018-11-28 13:27:00,476 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:27:00,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:27:00,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:00,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:27:00,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:00,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:27:00,558 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:27:00,568 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:27:00,593 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:27:00,593 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:27:00,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:27:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:00,657 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:27:00,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-11-28 13:27:00,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 13:27:00,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 13:27:00,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:27:00,658 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 7 states. [2018-11-28 13:27:00,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:00,698 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2018-11-28 13:27:00,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:27:00,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-11-28 13:27:00,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:00,699 INFO L225 Difference]: With dead ends: 27 [2018-11-28 13:27:00,699 INFO L226 Difference]: Without dead ends: 22 [2018-11-28 13:27:00,699 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 [2018-11-28 13:27:00,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-28 13:27:00,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-11-28 13:27:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 13:27:00,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2018-11-28 13:27:00,702 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 16 [2018-11-28 13:27:00,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:00,702 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2018-11-28 13:27:00,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 13:27:00,703 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2018-11-28 13:27:00,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 13:27:00,703 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:00,703 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:00,703 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:27:00,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:00,703 INFO L82 PathProgramCache]: Analyzing trace with hash 2055818357, now seen corresponding path program 3 times [2018-11-28 13:27:00,704 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:27:00,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:27:00,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:00,704 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:27:00,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:00,758 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:27:00,758 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:27:00,765 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:27:00,777 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 13:27:00,777 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:27:00,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:27:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:00,858 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:27:00,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-11-28 13:27:00,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 13:27:00,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 13:27:00,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:27:00,859 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 9 states. [2018-11-28 13:27:00,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:00,901 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-11-28 13:27:00,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:27:00,902 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-11-28 13:27:00,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:00,902 INFO L225 Difference]: With dead ends: 30 [2018-11-28 13:27:00,902 INFO L226 Difference]: Without dead ends: 25 [2018-11-28 13:27:00,903 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 [2018-11-28 13:27:00,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-28 13:27:00,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-11-28 13:27:00,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 13:27:00,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-11-28 13:27:00,907 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 19 [2018-11-28 13:27:00,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:00,907 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-11-28 13:27:00,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 13:27:00,907 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-11-28 13:27:00,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 13:27:00,908 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:00,908 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:00,908 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:27:00,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:00,908 INFO L82 PathProgramCache]: Analyzing trace with hash 318767734, now seen corresponding path program 4 times [2018-11-28 13:27:00,908 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:27:00,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:27:00,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:00,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:27:00,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:00,999 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:00,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:27:00,999 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/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 [2018-11-28 13:27:01,006 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:27:01,015 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:27:01,015 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:27:01,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:27:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:01,119 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:27:01,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-11-28 13:27:01,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 13:27:01,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 13:27:01,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:27:01,121 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 11 states. [2018-11-28 13:27:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:01,222 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2018-11-28 13:27:01,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 13:27:01,223 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-11-28 13:27:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:01,223 INFO L225 Difference]: With dead ends: 33 [2018-11-28 13:27:01,223 INFO L226 Difference]: Without dead ends: 28 [2018-11-28 13:27:01,224 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:27:01,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-28 13:27:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-11-28 13:27:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 13:27:01,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2018-11-28 13:27:01,228 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 22 [2018-11-28 13:27:01,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:01,228 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2018-11-28 13:27:01,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 13:27:01,228 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2018-11-28 13:27:01,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 13:27:01,229 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:01,229 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:01,229 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:27:01,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:01,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1904607445, now seen corresponding path program 5 times [2018-11-28 13:27:01,230 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:27:01,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:27:01,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:01,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:27:01,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:01,321 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:27:01,322 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:27:01,328 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:27:01,342 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-28 13:27:01,342 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:27:01,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:27:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:01,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:27:01,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-11-28 13:27:01,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 13:27:01,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 13:27:01,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-28 13:27:01,496 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 13 states. [2018-11-28 13:27:01,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:01,606 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2018-11-28 13:27:01,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 13:27:01,607 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2018-11-28 13:27:01,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:01,607 INFO L225 Difference]: With dead ends: 36 [2018-11-28 13:27:01,607 INFO L226 Difference]: Without dead ends: 31 [2018-11-28 13:27:01,607 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 [2018-11-28 13:27:01,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-28 13:27:01,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2018-11-28 13:27:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-28 13:27:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2018-11-28 13:27:01,614 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 25 [2018-11-28 13:27:01,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:01,614 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2018-11-28 13:27:01,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 13:27:01,614 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2018-11-28 13:27:01,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 13:27:01,615 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:01,615 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:01,615 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:27:01,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:01,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1015181846, now seen corresponding path program 6 times [2018-11-28 13:27:01,615 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:27:01,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:27:01,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:01,616 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:27:01,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:01,707 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:27:01,707 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/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 [2018-11-28 13:27:01,713 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:27:01,753 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-28 13:27:01,753 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:27:01,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:27:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:01,880 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:27:01,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-11-28 13:27:01,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 13:27:01,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 13:27:01,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-11-28 13:27:01,881 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 15 states. [2018-11-28 13:27:02,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:02,000 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2018-11-28 13:27:02,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 13:27:02,001 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-11-28 13:27:02,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:02,002 INFO L225 Difference]: With dead ends: 39 [2018-11-28 13:27:02,002 INFO L226 Difference]: Without dead ends: 34 [2018-11-28 13:27:02,003 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 [2018-11-28 13:27:02,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-28 13:27:02,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-11-28 13:27:02,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 13:27:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2018-11-28 13:27:02,009 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 28 [2018-11-28 13:27:02,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:02,010 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2018-11-28 13:27:02,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 13:27:02,010 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2018-11-28 13:27:02,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 13:27:02,010 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:02,010 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:02,010 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:27:02,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:02,011 INFO L82 PathProgramCache]: Analyzing trace with hash -209588939, now seen corresponding path program 7 times [2018-11-28 13:27:02,011 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:27:02,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:27:02,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:02,012 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:27:02,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:02,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:27:02,101 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/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 [2018-11-28 13:27:02,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:27:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:02,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:27:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:02,279 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:27:02,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-11-28 13:27:02,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-28 13:27:02,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 13:27:02,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2018-11-28 13:27:02,280 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 17 states. [2018-11-28 13:27:02,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:02,397 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2018-11-28 13:27:02,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 13:27:02,398 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2018-11-28 13:27:02,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:02,398 INFO L225 Difference]: With dead ends: 42 [2018-11-28 13:27:02,398 INFO L226 Difference]: Without dead ends: 37 [2018-11-28 13:27:02,399 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 [2018-11-28 13:27:02,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-28 13:27:02,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2018-11-28 13:27:02,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 13:27:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2018-11-28 13:27:02,402 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 31 [2018-11-28 13:27:02,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:02,403 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2018-11-28 13:27:02,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-28 13:27:02,403 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2018-11-28 13:27:02,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 13:27:02,403 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:02,403 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:02,404 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:27:02,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:02,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1608865354, now seen corresponding path program 8 times [2018-11-28 13:27:02,404 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:27:02,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:27:02,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:02,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:27:02,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:27:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:27:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:27:02,439 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 13:27:02,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:27:02 BoogieIcfgContainer [2018-11-28 13:27:02,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:27:02,465 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:27:02,465 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:27:02,465 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:27:02,465 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:27:00" (3/4) ... [2018-11-28 13:27:02,469 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 13:27:02,469 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:27:02,469 INFO L168 Benchmark]: Toolchain (without parser) took 2799.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 956.0 MB in the beginning and 1.0 GB in the end (delta: -84.0 MB). Peak memory consumption was 50.2 MB. Max. memory is 11.5 GB. [2018-11-28 13:27:02,471 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:27:02,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.09 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:27:02,472 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.65 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:27:02,472 INFO L168 Benchmark]: Boogie Preprocessor took 50.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -187.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-11-28 13:27:02,473 INFO L168 Benchmark]: RCFGBuilder took 133.75 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: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. [2018-11-28 13:27:02,473 INFO L168 Benchmark]: TraceAbstraction took 2429.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 80.6 MB). Peak memory consumption was 80.6 MB. Max. memory is 11.5 GB. [2018-11-28 13:27:02,474 INFO L168 Benchmark]: Witness Printer took 3.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:27:02,476 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 164.09 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 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 13.65 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -187.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 133.75 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: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2429.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 80.6 MB). Peak memory consumption was 80.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 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, 2.3s OverallTime, 10 OverallIterations, 8 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 173 SDtfs, 130 SDslu, 914 SDs, 0 SdLazy, 667 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 123 SyntacticMatches, 14 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.8s 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, 0.2s SatisfiabilityAnalysisTime, 1.1s 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 0.1.23-0cd3be1 [2018-11-28 13:27:03,944 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:27:03,946 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:27:03,955 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:27:03,956 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:27:03,957 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:27:03,958 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:27:03,959 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:27:03,960 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:27:03,961 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:27:03,962 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:27:03,962 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:27:03,963 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:27:03,963 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:27:03,964 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:27:03,965 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:27:03,966 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:27:03,967 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:27:03,968 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:27:03,970 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:27:03,970 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:27:03,971 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:27:03,973 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:27:03,973 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:27:03,974 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:27:03,974 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:27:03,975 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:27:03,976 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:27:03,976 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:27:03,977 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:27:03,977 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:27:03,978 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:27:03,978 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:27:03,978 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:27:03,979 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:27:03,979 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:27:03,979 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 13:27:03,991 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:27:03,991 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:27:03,992 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:27:03,992 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:27:03,993 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:27:03,993 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:27:03,993 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:27:03,993 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:27:03,994 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:27:03,994 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:27:03,994 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:27:03,994 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:27:03,994 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:27:03,994 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:27:03,994 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 13:27:03,995 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 13:27:03,995 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:27:03,995 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:27:03,995 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:27:03,995 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:27:03,995 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:27:03,996 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:27:03,996 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:27:03,996 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:27:03,996 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:27:03,996 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:27:03,996 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:27:03,996 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:27:03,997 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 13:27:03,997 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:27:03,997 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 13:27:03,997 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 13:27:03,997 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_5f7a0591-44e6-4970-b25b-66d2e336db2b/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 [2018-11-28 13:27:04,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:27:04,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:27:04,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:27:04,038 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:27:04,039 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:27:04,039 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-28 13:27:04,077 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/data/a8abdbf8e/86680f62a6df4c69bd10fd74e475edb3/FLAGe518311c0 [2018-11-28 13:27:04,379 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:27:04,379 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-28 13:27:04,384 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/data/a8abdbf8e/86680f62a6df4c69bd10fd74e475edb3/FLAGe518311c0 [2018-11-28 13:27:04,396 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/data/a8abdbf8e/86680f62a6df4c69bd10fd74e475edb3 [2018-11-28 13:27:04,398 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:27:04,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:27:04,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:27:04,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:27:04,404 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:27:04,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:27:04" (1/1) ... [2018-11-28 13:27:04,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5009befe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:04, skipping insertion in model container [2018-11-28 13:27:04,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:27:04" (1/1) ... [2018-11-28 13:27:04,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:27:04,425 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:27:04,532 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:27:04,536 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:27:04,548 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:27:04,557 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:27:04,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:04 WrapperNode [2018-11-28 13:27:04,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:27:04,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:27:04,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:27:04,559 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:27:04,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:04" (1/1) ... [2018-11-28 13:27:04,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:04" (1/1) ... [2018-11-28 13:27:04,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:27:04,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:27:04,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:27:04,573 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:27:04,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:04" (1/1) ... [2018-11-28 13:27:04,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:04" (1/1) ... [2018-11-28 13:27:04,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:04" (1/1) ... [2018-11-28 13:27:04,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:04" (1/1) ... [2018-11-28 13:27:04,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:04" (1/1) ... [2018-11-28 13:27:04,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:04" (1/1) ... [2018-11-28 13:27:04,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:04" (1/1) ... [2018-11-28 13:27:04,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:27:04,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:27:04,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:27:04,591 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:27:04,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:27:04,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:27:04,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:27:04,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:27:04,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:27:04,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:27:04,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:27:04,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 13:27:04,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 13:27:04,782 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:27:04,782 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 13:27:04,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:27:04 BoogieIcfgContainer [2018-11-28 13:27:04,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:27:04,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:27:04,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:27:04,785 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:27:04,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:27:04" (1/3) ... [2018-11-28 13:27:04,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1378dd86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:27:04, skipping insertion in model container [2018-11-28 13:27:04,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:27:04" (2/3) ... [2018-11-28 13:27:04,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1378dd86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:27:04, skipping insertion in model container [2018-11-28 13:27:04,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:27:04" (3/3) ... [2018-11-28 13:27:04,788 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-28 13:27:04,797 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:27:04,803 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 13:27:04,812 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 13:27:04,836 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:27:04,836 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:27:04,836 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:27:04,836 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:27:04,836 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:27:04,837 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:27:04,837 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:27:04,837 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:27:04,837 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:27:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-28 13:27:04,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 13:27:04,856 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:04,856 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:04,857 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:27:04,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:04,861 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2018-11-28 13:27:04,863 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 13:27:04,864 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/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 [2018-11-28 13:27:04,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:27:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:04,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:27:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:04,912 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 13:27:04,914 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:27:04,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:27:04,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 13:27:04,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 13:27:04,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 13:27:04,932 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-28 13:27:04,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:04,946 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-28 13:27:04,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 13:27:04,947 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-28 13:27:04,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:04,952 INFO L225 Difference]: With dead ends: 32 [2018-11-28 13:27:04,952 INFO L226 Difference]: Without dead ends: 13 [2018-11-28 13:27:04,954 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 [2018-11-28 13:27:04,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-28 13:27:04,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-28 13:27:04,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-28 13:27:04,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-11-28 13:27:04,983 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-11-28 13:27:04,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:04,983 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-28 13:27:04,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 13:27:04,983 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-11-28 13:27:04,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 13:27:04,984 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:04,984 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:04,984 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:27:04,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:04,984 INFO L82 PathProgramCache]: Analyzing trace with hash -158041290, now seen corresponding path program 1 times [2018-11-28 13:27:04,985 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 13:27:04,985 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/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 [2018-11-28 13:27:05,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:27:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:05,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:27:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:05,034 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 13:27:05,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:27:05,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:27:05,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:27:05,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:27:05,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:27:05,037 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2018-11-28 13:27:05,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:05,049 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-11-28 13:27:05,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:27:05,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 13:27:05,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:05,050 INFO L225 Difference]: With dead ends: 21 [2018-11-28 13:27:05,050 INFO L226 Difference]: Without dead ends: 16 [2018-11-28 13:27:05,051 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 [2018-11-28 13:27:05,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-28 13:27:05,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2018-11-28 13:27:05,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 13:27:05,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-11-28 13:27:05,053 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-11-28 13:27:05,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:05,054 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-28 13:27:05,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:27:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-28 13:27:05,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 13:27:05,054 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:05,054 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:05,054 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:27:05,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:05,055 INFO L82 PathProgramCache]: Analyzing trace with hash 743821333, now seen corresponding path program 1 times [2018-11-28 13:27:05,055 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 13:27:05,055 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/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 [2018-11-28 13:27:05,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:27:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:27:05,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:27:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:05,114 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 13:27:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:05,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:27:05,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-28 13:27:05,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:27:05,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:27:05,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:27:05,147 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 6 states. [2018-11-28 13:27:05,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:05,212 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2018-11-28 13:27:05,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:27:05,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-28 13:27:05,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:05,213 INFO L225 Difference]: With dead ends: 28 [2018-11-28 13:27:05,213 INFO L226 Difference]: Without dead ends: 23 [2018-11-28 13:27:05,214 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 [2018-11-28 13:27:05,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-28 13:27:05,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-28 13:27:05,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 13:27:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-11-28 13:27:05,219 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2018-11-28 13:27:05,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:05,219 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-11-28 13:27:05,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:27:05,219 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-11-28 13:27:05,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 13:27:05,220 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:05,220 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:05,220 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:27:05,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:05,221 INFO L82 PathProgramCache]: Analyzing trace with hash 318767734, now seen corresponding path program 2 times [2018-11-28 13:27:05,221 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 13:27:05,221 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/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 [2018-11-28 13:27:05,243 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-28 13:27:05,268 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:27:05,268 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:27:05,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:27:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:05,313 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 13:27:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:05,393 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:27:05,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-11-28 13:27:05,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 13:27:05,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 13:27:05,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-11-28 13:27:05,394 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 12 states. [2018-11-28 13:27:05,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:27:05,529 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2018-11-28 13:27:05,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:27:05,529 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-11-28 13:27:05,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:27:05,530 INFO L225 Difference]: With dead ends: 40 [2018-11-28 13:27:05,530 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 13:27:05,531 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 [2018-11-28 13:27:05,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 13:27:05,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-28 13:27:05,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 13:27:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2018-11-28 13:27:05,537 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 22 [2018-11-28 13:27:05,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:27:05,537 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2018-11-28 13:27:05,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 13:27:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2018-11-28 13:27:05,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 13:27:05,538 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:27:05,538 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:27:05,539 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:27:05,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:27:05,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1608865354, now seen corresponding path program 3 times [2018-11-28 13:27:05,541 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 13:27:05,541 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/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 [2018-11-28 13:27:05,566 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-28 13:27:05,623 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-28 13:27:05,624 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:27:05,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:27:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:07,730 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 13:27:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:27:13,474 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:27:13,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 56 [2018-11-28 13:27:13,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-11-28 13:27:13,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-11-28 13:27:13,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=2796, Unknown=0, NotChecked=0, Total=3080 [2018-11-28 13:27:13,476 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 56 states. [2018-11-28 13:27:13,990 WARN L180 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 102 [2018-11-28 13:27:16,246 WARN L180 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 268 DAG size of output: 239 [2018-11-28 13:27:18,361 WARN L180 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 230 DAG size of output: 220 [2018-11-28 13:27:18,742 WARN L180 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 107 [2018-11-28 13:27:20,492 WARN L180 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 209 DAG size of output: 193 [2018-11-28 13:27:22,430 WARN L180 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 230 DAG size of output: 217 [2018-11-28 13:27:23,006 WARN L180 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-11-28 13:27:23,481 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-11-28 13:27:24,663 WARN L180 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-11-28 13:27:25,080 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-11-28 13:27:25,661 WARN L180 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 110 [2018-11-28 13:27:26,009 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 128 [2018-11-28 13:27:27,780 WARN L180 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 143 DAG size of output: 139 [2018-11-28 13:27:30,046 WARN L180 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 268 DAG size of output: 236 [2018-11-28 13:27:30,660 WARN L180 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-11-28 13:27:32,827 WARN L180 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 247 DAG size of output: 228 [2018-11-28 13:27:34,732 WARN L180 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 228 DAG size of output: 209 [2018-11-28 13:27:35,148 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-11-28 13:27:36,191 WARN L180 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 170 [2018-11-28 13:27:36,781 WARN L180 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-11-28 13:27:37,335 WARN L180 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-11-28 13:27:38,181 WARN L180 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 111 [2018-11-28 13:27:39,895 WARN L180 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 140 DAG size of output: 136 [2018-11-28 13:27:40,805 WARN L180 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-11-28 13:27:41,573 WARN L180 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-11-28 13:27:43,508 WARN L180 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 172 [2018-11-28 13:27:44,458 WARN L180 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 116 [2018-11-28 13:27:46,995 WARN L180 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 250 DAG size of output: 227 [2018-11-28 13:27:49,703 WARN L180 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 234 DAG size of output: 215 [2018-11-28 13:27:52,272 WARN L180 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 232 DAG size of output: 213 [2018-11-28 13:27:53,801 WARN L180 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 189 [2018-11-28 13:27:55,685 WARN L180 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2018-11-28 13:27:57,762 WARN L180 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 218 [2018-11-28 13:27:58,827 WARN L180 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-11-28 13:28:00,103 WARN L180 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 112 [2018-11-28 13:28:01,388 WARN L180 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 116 [2018-11-28 13:28:01,871 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-11-28 13:28:02,206 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-11-28 13:28:04,156 WARN L180 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 165 [2018-11-28 13:28:05,173 WARN L180 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 101 [2018-11-28 13:28:07,110 WARN L180 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 226 DAG size of output: 207 [2018-11-28 13:28:09,014 WARN L180 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 226 DAG size of output: 207 [2018-11-28 13:28:10,731 WARN L180 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 199 [2018-11-28 13:28:13,117 WARN L180 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 211 [2018-11-28 13:28:14,302 WARN L180 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 115 [2018-11-28 13:28:15,122 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 99 [2018-11-28 13:28:17,444 WARN L180 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 301 DAG size of output: 222 [2018-11-28 13:28:18,928 WARN L180 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 133 [2018-11-28 13:28:21,434 WARN L180 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 158 [2018-11-28 13:28:23,106 WARN L180 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 214 [2018-11-28 13:28:25,974 WARN L180 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 310 DAG size of output: 231 [2018-11-28 13:28:27,193 WARN L180 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 131 [2018-11-28 13:28:28,844 WARN L180 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 222 DAG size of output: 203 [2018-11-28 13:28:30,758 WARN L180 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2018-11-28 13:28:32,570 WARN L180 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 213 DAG size of output: 194 [2018-11-28 13:28:35,158 WARN L180 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 208 [2018-11-28 13:28:36,702 WARN L180 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 184 [2018-11-28 13:28:37,646 WARN L180 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 178 [2018-11-28 13:28:39,166 WARN L180 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 129 [2018-11-28 13:28:42,346 WARN L180 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 301 DAG size of output: 222 [2018-11-28 13:28:45,024 WARN L180 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 262 DAG size of output: 224 [2018-11-28 13:28:47,148 WARN L180 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 214 [2018-11-28 13:28:48,713 WARN L180 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 147 [2018-11-28 13:28:51,003 WARN L180 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 161 [2018-11-28 13:28:52,645 WARN L180 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 214 [2018-11-28 13:28:55,558 WARN L180 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 310 DAG size of output: 231 [2018-11-28 13:28:57,291 WARN L180 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 217 [2018-11-28 13:29:00,091 WARN L180 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 268 DAG size of output: 230 [2018-11-28 13:29:01,914 WARN L180 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 211 [2018-11-28 13:29:04,377 WARN L180 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 264 DAG size of output: 226 [2018-11-28 13:29:05,725 WARN L180 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 145 [2018-11-28 13:29:07,440 WARN L180 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 219 DAG size of output: 200 [2018-11-28 13:29:09,180 WARN L180 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 197 [2018-11-28 13:29:11,735 WARN L180 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 306 DAG size of output: 230 [2018-11-28 13:29:13,183 WARN L180 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 184 [2018-11-28 13:29:14,876 WARN L180 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 187 [2018-11-28 13:29:16,233 WARN L180 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 181 [2018-11-28 13:29:17,610 WARN L180 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 143 [2018-11-28 13:29:19,837 WARN L180 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 309 DAG size of output: 233 [2018-11-28 13:29:22,254 WARN L180 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 262 DAG size of output: 224 [2018-11-28 13:29:25,237 WARN L180 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 267 DAG size of output: 229 [2018-11-28 13:29:27,746 WARN L180 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 257 DAG size of output: 219 [2018-11-28 13:29:29,409 WARN L180 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 389 DAG size of output: 173 [2018-11-28 13:29:31,210 WARN L180 SmtUtils]: Spent 1000.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 228 [2018-11-28 13:29:33,905 WARN L180 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 318 DAG size of output: 242 [2018-11-28 13:29:35,593 WARN L180 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 217 [2018-11-28 13:29:38,458 WARN L180 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 268 DAG size of output: 230 [2018-11-28 13:29:40,388 WARN L180 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 302 DAG size of output: 220 [2018-11-28 13:29:43,392 WARN L180 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 270 DAG size of output: 232 [2018-11-28 13:29:45,358 WARN L180 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 214 [2018-11-28 13:29:48,052 WARN L180 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 266 DAG size of output: 228 [2018-11-28 13:29:49,478 WARN L180 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 159 [2018-11-28 13:29:52,521 WARN L180 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 311 DAG size of output: 234 [2018-11-28 13:29:54,021 WARN L180 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 184 [2018-11-28 13:29:55,987 WARN L180 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 187 [2018-11-28 13:29:57,967 WARN L180 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 190 [2018-11-28 13:29:59,679 WARN L180 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 184 [2018-11-28 13:30:01,433 WARN L180 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 377 DAG size of output: 165 [2018-11-28 13:30:03,504 WARN L180 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 105 [2018-11-28 13:30:06,301 WARN L180 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 155 [2018-11-28 13:30:08,850 WARN L180 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 231 DAG size of output: 192 [2018-11-28 13:30:12,718 WARN L180 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 262 DAG size of output: 224 [2018-11-28 13:30:16,684 WARN L180 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 267 DAG size of output: 229 [2018-11-28 13:30:18,339 WARN L180 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 159 [2018-11-28 13:30:20,351 WARN L180 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 389 DAG size of output: 70 [2018-11-28 13:30:23,752 WARN L180 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 315 DAG size of output: 213 [2018-11-28 13:30:26,321 WARN L180 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 227 [2018-11-28 13:30:30,445 WARN L180 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 313 DAG size of output: 211 [2018-11-28 13:30:33,198 WARN L180 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 363 DAG size of output: 221 [2018-11-28 13:30:35,375 WARN L180 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 349 DAG size of output: 207 [2018-11-28 13:30:38,030 WARN L180 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 323 DAG size of output: 223 [2018-11-28 13:30:39,256 WARN L180 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 122 [2018-11-28 13:30:41,613 WARN L180 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 222 DAG size of output: 202 [2018-11-28 13:30:42,605 WARN L180 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 103 [2018-11-28 13:30:43,870 WARN L180 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 194 [2018-11-28 13:30:48,228 WARN L180 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 308 DAG size of output: 231 [2018-11-28 13:30:51,722 WARN L180 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 320 DAG size of output: 243 [2018-11-28 13:30:55,175 WARN L180 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 299 DAG size of output: 217 [2018-11-28 13:30:58,957 WARN L180 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 268 DAG size of output: 230 [2018-11-28 13:31:01,872 WARN L180 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 302 DAG size of output: 220 [2018-11-28 13:31:05,698 WARN L180 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 270 DAG size of output: 232 [2018-11-28 13:31:08,215 WARN L180 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 399 DAG size of output: 167 [2018-11-28 13:31:11,721 WARN L180 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 237 DAG size of output: 215 [2018-11-28 13:31:14,402 WARN L180 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 187 [2018-11-28 13:31:17,134 WARN L180 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 190 [2018-11-28 13:31:18,962 WARN L180 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 165 [2018-11-28 13:31:19,511 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-11-28 13:31:23,831 WARN L180 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 285 DAG size of output: 243 [2018-11-28 13:31:25,800 WARN L180 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2018-11-28 13:31:30,108 WARN L180 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 272 DAG size of output: 234 [2018-11-28 13:31:33,052 WARN L180 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 392 DAG size of output: 187 [2018-11-28 13:31:35,578 WARN L180 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 224 DAG size of output: 205 [2018-11-28 13:31:38,924 WARN L180 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 214 DAG size of output: 200 [2018-11-28 13:31:41,580 WARN L180 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 246 DAG size of output: 224 [2018-11-28 13:31:44,486 WARN L180 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 305 DAG size of output: 223 [2018-11-28 13:31:48,799 WARN L180 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 325 DAG size of output: 245 [2018-11-28 13:31:50,511 WARN L180 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2018-11-28 13:31:53,296 WARN L180 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 221 DAG size of output: 212 [2018-11-28 13:31:55,859 WARN L180 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 212 DAG size of output: 193 [2018-11-28 13:32:00,572 WARN L180 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 303 DAG size of output: 218 [2018-11-28 13:32:02,671 WARN L180 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-11-28 13:32:05,233 WARN L180 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 224 DAG size of output: 215 [2018-11-28 13:32:08,865 WARN L180 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 306 DAG size of output: 199 [2018-11-28 13:32:11,307 WARN L180 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2018-11-28 13:32:12,109 WARN L180 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-11-28 13:32:15,010 WARN L180 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 245 DAG size of output: 226 [2018-11-28 13:32:17,314 WARN L180 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 202 DAG size of output: 187 [2018-11-28 13:32:20,077 WARN L180 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 265 DAG size of output: 237 [2018-11-28 13:32:25,892 WARN L180 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 315 DAG size of output: 237 [2018-11-28 13:32:29,192 WARN L180 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 312 DAG size of output: 208 [2018-11-28 13:32:30,136 WARN L180 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2018-11-28 13:32:30,951 WARN L180 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-11-28 13:32:31,642 WARN L180 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-11-28 13:32:37,923 WARN L180 SmtUtils]: Spent 3.44 s on a formula simplification. DAG size of input: 322 DAG size of output: 243 [2018-11-28 13:32:38,785 WARN L180 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-11-28 13:32:43,641 WARN L180 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 325 DAG size of output: 246 [2018-11-28 13:32:44,202 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-11-28 13:32:46,661 WARN L180 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 242 DAG size of output: 223 [2018-11-28 13:32:51,518 WARN L180 SmtUtils]: Spent 3.26 s on a formula simplification. DAG size of input: 328 DAG size of output: 249 [2018-11-28 13:32:52,058 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2018-11-28 13:32:53,172 WARN L180 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-11-28 13:32:56,091 WARN L180 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 230 DAG size of output: 211 [2018-11-28 13:32:56,801 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-11-28 13:32:59,228 WARN L180 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 224 DAG size of output: 205 [2018-11-28 13:32:59,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:32:59,473 INFO L93 Difference]: Finished difference Result 441 states and 585 transitions. [2018-11-28 13:32:59,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-11-28 13:32:59,473 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 34 [2018-11-28 13:32:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:32:59,477 INFO L225 Difference]: With dead ends: 441 [2018-11-28 13:32:59,477 INFO L226 Difference]: Without dead ends: 430 [2018-11-28 13:32:59,490 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23821 ImplicationChecksByTransitivity, 329.5s TimeCoverageRelationStatistics Valid=7532, Invalid=61374, Unknown=0, NotChecked=0, Total=68906 [2018-11-28 13:32:59,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-11-28 13:32:59,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 287. [2018-11-28 13:32:59,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-11-28 13:32:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 396 transitions. [2018-11-28 13:32:59,560 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 396 transitions. Word has length 34 [2018-11-28 13:32:59,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:32:59,560 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 396 transitions. [2018-11-28 13:32:59,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-11-28 13:32:59,560 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 396 transitions. [2018-11-28 13:32:59,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 13:32:59,561 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:32:59,562 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:32:59,562 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:32:59,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:32:59,562 INFO L82 PathProgramCache]: Analyzing trace with hash -226885002, now seen corresponding path program 1 times [2018-11-28 13:32:59,562 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 13:32:59,563 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/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 [2018-11-28 13:32:59,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:32:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:32:59,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:33:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:00,366 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 13:33:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 7 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:33:04,615 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:33:04,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2018-11-28 13:33:04,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-11-28 13:33:04,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-11-28 13:33:04,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=2533, Unknown=0, NotChecked=0, Total=2862 [2018-11-28 13:33:04,617 INFO L87 Difference]: Start difference. First operand 287 states and 396 transitions. Second operand 54 states. [2018-11-28 13:33:05,438 WARN L180 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 159 [2018-11-28 13:33:05,940 WARN L180 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-11-28 13:33:06,838 WARN L180 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 147 [2018-11-28 13:33:07,773 WARN L180 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-11-28 13:33:08,399 WARN L180 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2018-11-28 13:33:09,081 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-11-28 13:33:09,492 WARN L180 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 137 [2018-11-28 13:33:09,802 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-11-28 13:33:10,548 WARN L180 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-11-28 13:33:11,431 WARN L180 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-11-28 13:33:11,986 WARN L180 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-11-28 13:33:13,506 WARN L180 SmtUtils]: Spent 853.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-11-28 13:33:13,815 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-11-28 13:33:14,695 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2018-11-28 13:33:15,334 WARN L180 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 113 [2018-11-28 13:33:16,257 WARN L180 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 135 [2018-11-28 13:33:17,810 WARN L180 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 172 [2018-11-28 13:33:18,797 WARN L180 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-11-28 13:33:19,623 WARN L180 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-11-28 13:33:22,624 WARN L180 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2018-11-28 13:33:23,075 WARN L180 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2018-11-28 13:33:24,382 WARN L180 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-11-28 13:33:24,743 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-11-28 13:33:25,385 WARN L180 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 100 [2018-11-28 13:33:26,627 WARN L180 SmtUtils]: Spent 938.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 148 [2018-11-28 13:33:29,755 WARN L180 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-11-28 13:33:30,139 WARN L180 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-11-28 13:33:31,022 WARN L180 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-11-28 13:33:31,909 WARN L180 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-11-28 13:33:32,710 WARN L180 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2018-11-28 13:33:37,427 WARN L180 SmtUtils]: Spent 3.98 s on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2018-11-28 13:33:37,921 WARN L180 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-11-28 13:33:38,356 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-11-28 13:33:38,727 WARN L180 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-11-28 13:33:40,128 WARN L180 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-11-28 13:33:40,710 WARN L180 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-11-28 13:33:43,046 WARN L180 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 170 DAG size of output: 153 [2018-11-28 13:33:43,490 WARN L180 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-11-28 13:33:44,423 WARN L180 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-11-28 13:33:44,732 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-11-28 13:33:45,537 WARN L180 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-11-28 13:33:46,399 WARN L180 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-11-28 13:33:47,242 WARN L180 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-11-28 13:33:50,957 WARN L180 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-11-28 13:33:51,475 WARN L180 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-11-28 13:33:51,930 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-11-28 13:33:52,295 WARN L180 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-11-28 13:33:53,114 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2018-11-28 13:33:56,963 WARN L180 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2018-11-28 13:33:57,832 WARN L180 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-11-28 13:33:58,423 WARN L180 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-11-28 13:33:59,001 WARN L180 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-11-28 13:33:59,413 WARN L180 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-11-28 13:34:01,789 WARN L180 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 182 DAG size of output: 132 [2018-11-28 13:34:03,760 WARN L180 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 174 DAG size of output: 156 [2018-11-28 13:34:07,283 WARN L180 SmtUtils]: Spent 2.99 s on a formula simplification. DAG size of input: 184 DAG size of output: 179 [2018-11-28 13:34:08,843 WARN L180 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 155 DAG size of output: 154 [2018-11-28 13:34:09,175 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-11-28 13:34:09,984 WARN L180 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-11-28 13:34:11,311 WARN L180 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 149 [2018-11-28 13:34:12,676 WARN L180 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 144 [2018-11-28 13:34:13,640 WARN L180 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2018-11-28 13:34:14,197 WARN L180 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-11-28 13:34:14,783 WARN L180 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-11-28 13:34:15,439 WARN L180 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-11-28 13:34:15,775 WARN L180 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-11-28 13:34:16,831 WARN L180 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-11-28 13:34:17,695 WARN L180 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-11-28 13:34:18,354 WARN L180 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-11-28 13:34:18,656 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2018-11-28 13:34:20,257 WARN L180 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 154 DAG size of output: 134 [2018-11-28 13:34:21,862 WARN L180 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 180 DAG size of output: 119 [2018-11-28 13:34:23,425 WARN L180 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 152 DAG size of output: 133 [2018-11-28 13:34:24,006 WARN L180 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2018-11-28 13:34:25,029 WARN L180 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-11-28 13:34:26,098 WARN L180 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 139 [2018-11-28 13:34:26,922 WARN L180 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 88 [2018-11-28 13:34:27,881 WARN L180 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 64 [2018-11-28 13:34:29,504 WARN L180 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 118 [2018-11-28 13:34:30,921 WARN L180 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 118 [2018-11-28 13:34:32,050 WARN L180 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2018-11-28 13:34:32,496 WARN L180 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-11-28 13:34:33,647 WARN L180 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-11-28 13:34:34,826 WARN L180 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 121 [2018-11-28 13:34:35,638 WARN L180 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2018-11-28 13:34:36,711 WARN L180 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 122 [2018-11-28 13:34:38,297 WARN L180 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 130 [2018-11-28 13:34:39,276 WARN L180 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 131 [2018-11-28 13:34:40,908 WARN L180 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 161 DAG size of output: 141 [2018-11-28 13:34:41,563 WARN L180 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 103 [2018-11-28 13:34:42,208 WARN L180 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 112 [2018-11-28 13:34:43,301 WARN L180 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 119 [2018-11-28 13:34:43,751 WARN L180 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 100 [2018-11-28 13:34:44,225 WARN L180 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 109 [2018-11-28 13:34:44,935 WARN L180 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2018-11-28 13:34:45,306 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 88 [2018-11-28 13:34:45,690 WARN L180 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 97 [2018-11-28 13:34:46,171 WARN L180 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-11-28 13:34:46,758 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2018-11-28 13:34:47,059 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2018-11-28 13:34:47,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:34:47,282 INFO L93 Difference]: Finished difference Result 608 states and 856 transitions. [2018-11-28 13:34:47,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-11-28 13:34:47,282 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 34 [2018-11-28 13:34:47,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:34:47,284 INFO L225 Difference]: With dead ends: 608 [2018-11-28 13:34:47,285 INFO L226 Difference]: Without dead ends: 568 [2018-11-28 13:34:47,287 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11941 ImplicationChecksByTransitivity, 101.9s TimeCoverageRelationStatistics Valid=4953, Invalid=35649, Unknown=0, NotChecked=0, Total=40602 [2018-11-28 13:34:47,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2018-11-28 13:34:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 489. [2018-11-28 13:34:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2018-11-28 13:34:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 687 transitions. [2018-11-28 13:34:47,411 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 687 transitions. Word has length 34 [2018-11-28 13:34:47,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:34:47,411 INFO L480 AbstractCegarLoop]: Abstraction has 489 states and 687 transitions. [2018-11-28 13:34:47,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-11-28 13:34:47,411 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 687 transitions. [2018-11-28 13:34:47,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 13:34:47,413 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:34:47,413 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:34:47,413 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:34:47,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:34:47,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1706268918, now seen corresponding path program 2 times [2018-11-28 13:34:47,414 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 13:34:47,414 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/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 [2018-11-28 13:34:47,430 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-28 13:34:47,461 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:34:47,461 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:34:47,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:34:48,238 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:34:48,238 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 13:34:52,849 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:34:52,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:34:52,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2018-11-28 13:34:52,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-11-28 13:34:52,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-11-28 13:34:52,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=2485, Unknown=0, NotChecked=0, Total=2862 [2018-11-28 13:34:52,851 INFO L87 Difference]: Start difference. First operand 489 states and 687 transitions. Second operand 54 states. [2018-11-28 13:34:53,336 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 28 [2018-11-28 13:34:55,204 WARN L180 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 182 DAG size of output: 150 [2018-11-28 13:34:56,265 WARN L180 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-11-28 13:34:57,367 WARN L180 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 138 [2018-11-28 13:34:59,747 WARN L180 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 192 DAG size of output: 156 [2018-11-28 13:35:00,089 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-11-28 13:35:02,539 WARN L180 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2018-11-28 13:35:03,047 WARN L180 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-11-28 13:35:03,431 WARN L180 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-11-28 13:35:04,924 WARN L180 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 157 [2018-11-28 13:35:05,342 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-11-28 13:35:06,342 WARN L180 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 129 [2018-11-28 13:35:07,522 WARN L180 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 124 [2018-11-28 13:35:10,088 WARN L180 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 202 DAG size of output: 162 [2018-11-28 13:35:10,504 WARN L180 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-11-28 13:35:10,911 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-11-28 13:35:13,678 WARN L180 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 194 DAG size of output: 186 [2018-11-28 13:35:14,296 WARN L180 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-11-28 13:35:14,740 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-11-28 13:35:15,071 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-11-28 13:35:16,846 WARN L180 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 189 DAG size of output: 169 [2018-11-28 13:35:17,295 WARN L180 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-11-28 13:35:18,463 WARN L180 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 134 [2018-11-28 13:35:18,773 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-11-28 13:35:19,732 WARN L180 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 126 [2018-11-28 13:35:20,583 WARN L180 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 100 [2018-11-28 13:35:21,777 WARN L180 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 121 [2018-11-28 13:35:24,682 WARN L180 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 212 DAG size of output: 168 [2018-11-28 13:35:25,165 WARN L180 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-11-28 13:35:25,629 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-11-28 13:35:25,980 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-11-28 13:35:29,056 WARN L180 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 210 DAG size of output: 198 [2018-11-28 13:35:29,723 WARN L180 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-11-28 13:35:30,214 WARN L180 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-11-28 13:35:30,598 WARN L180 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-11-28 13:35:32,941 WARN L180 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 204 DAG size of output: 180 [2018-11-28 13:35:33,408 WARN L180 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-11-28 13:35:34,855 WARN L180 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 139 [2018-11-28 13:35:35,192 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-11-28 13:35:36,337 WARN L180 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 131 [2018-11-28 13:35:37,584 WARN L180 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 123 [2018-11-28 13:35:38,675 WARN L180 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 118 [2018-11-28 13:35:41,798 WARN L180 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 223 DAG size of output: 175 [2018-11-28 13:35:42,308 WARN L180 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-11-28 13:35:42,829 WARN L180 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-11-28 13:35:43,196 WARN L180 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-11-28 13:35:46,893 WARN L180 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2018-11-28 13:35:47,692 WARN L180 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-11-28 13:35:48,247 WARN L180 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-11-28 13:35:48,591 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-11-28 13:35:51,518 WARN L180 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 226 DAG size of output: 150 [2018-11-28 13:35:53,643 WARN L180 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 214 DAG size of output: 186 [2018-11-28 13:35:56,632 WARN L180 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 222 DAG size of output: 174 [2018-11-28 13:35:58,144 WARN L180 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 144 [2018-11-28 13:35:59,417 WARN L180 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 136 [2018-11-28 13:36:00,568 WARN L180 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 128 [2018-11-28 13:36:01,808 WARN L180 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 120 [2018-11-28 13:36:02,731 WARN L180 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 115 [2018-11-28 13:36:03,630 WARN L180 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-11-28 13:36:04,686 WARN L180 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-11-28 13:36:07,207 WARN L180 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 225 DAG size of output: 149 [2018-11-28 13:36:08,680 WARN L180 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 128 [2018-11-28 13:36:09,478 WARN L180 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 105 [2018-11-28 13:36:10,314 WARN L180 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 105 [2018-11-28 13:36:10,931 WARN L180 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-11-28 13:36:12,600 WARN L180 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 41 [2018-11-28 13:36:13,979 WARN L180 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 117 [2018-11-28 13:36:14,884 WARN L180 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 112 [2018-11-28 13:36:15,619 WARN L180 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 30 [2018-11-28 13:36:16,388 WARN L180 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 43 [2018-11-28 13:36:17,564 WARN L180 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 120 [2018-11-28 13:36:18,734 WARN L180 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 119 [2018-11-28 13:36:20,024 WARN L180 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 124 [2018-11-28 13:36:21,014 WARN L180 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 128 [2018-11-28 13:36:21,776 WARN L180 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 115 [2018-11-28 13:36:23,216 WARN L180 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 129 [2018-11-28 13:36:24,194 WARN L180 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 101 [2018-11-28 13:36:24,955 WARN L180 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 47 [2018-11-28 13:36:26,042 WARN L180 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 120 [2018-11-28 13:36:26,736 WARN L180 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 58 [2018-11-28 13:36:27,442 WARN L180 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 120 [2018-11-28 13:36:28,215 WARN L180 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 57 [2018-11-28 13:36:28,749 WARN L180 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 37 [2018-11-28 13:36:29,641 WARN L180 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 120 [2018-11-28 13:36:30,255 WARN L180 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 59 [2018-11-28 13:36:30,954 WARN L180 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 61 [2018-11-28 13:36:31,431 WARN L180 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 51 [2018-11-28 13:36:32,782 WARN L180 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 124 [2018-11-28 13:36:33,823 WARN L180 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 109 [2018-11-28 13:36:34,815 WARN L180 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 108 [2018-11-28 13:36:36,014 WARN L180 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 111 [2018-11-28 13:36:37,159 WARN L180 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 111 [2018-11-28 13:36:38,112 WARN L180 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 102 [2018-11-28 13:36:38,717 WARN L180 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 96 [2018-11-28 13:36:39,536 WARN L180 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 101 [2018-11-28 13:36:40,506 WARN L180 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 105 [2018-11-28 13:36:41,994 WARN L180 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 127 [2018-11-28 13:36:42,958 WARN L180 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 107 [2018-11-28 13:36:43,622 WARN L180 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 59 [2018-11-28 13:36:44,405 WARN L180 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 52 [2018-11-28 13:36:45,491 WARN L180 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 127 [2018-11-28 13:36:46,836 WARN L180 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 113 [2018-11-28 13:36:46,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:36:46,879 INFO L93 Difference]: Finished difference Result 811 states and 1139 transitions. [2018-11-28 13:36:46,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-11-28 13:36:46,880 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 34 [2018-11-28 13:36:46,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:36:46,883 INFO L225 Difference]: With dead ends: 811 [2018-11-28 13:36:46,883 INFO L226 Difference]: Without dead ends: 757 [2018-11-28 13:36:46,885 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12076 ImplicationChecksByTransitivity, 113.6s TimeCoverageRelationStatistics Valid=5879, Invalid=35127, Unknown=0, NotChecked=0, Total=41006 [2018-11-28 13:36:46,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2018-11-28 13:36:47,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 660. [2018-11-28 13:36:47,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2018-11-28 13:36:47,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 928 transitions. [2018-11-28 13:36:47,046 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 928 transitions. Word has length 34 [2018-11-28 13:36:47,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:36:47,046 INFO L480 AbstractCegarLoop]: Abstraction has 660 states and 928 transitions. [2018-11-28 13:36:47,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-11-28 13:36:47,046 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 928 transitions. [2018-11-28 13:36:47,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 13:36:47,048 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:36:47,048 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:36:47,048 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:36:47,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:36:47,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1272006578, now seen corresponding path program 3 times [2018-11-28 13:36:47,049 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 13:36:47,049 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f7a0591-44e6-4970-b25b-66d2e336db2b/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 [2018-11-28 13:36:47,063 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-28 13:36:47,101 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-28 13:36:47,101 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:36:47,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:36:49,079 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:36:49,079 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 13:36:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:36:54,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:36:54,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 56 [2018-11-28 13:36:54,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-11-28 13:36:54,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-11-28 13:36:54,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=2674, Unknown=0, NotChecked=0, Total=3080 [2018-11-28 13:36:54,923 INFO L87 Difference]: Start difference. First operand 660 states and 928 transitions. Second operand 56 states. [2018-11-28 13:36:55,470 WARN L180 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 98 [2018-11-28 13:36:57,415 WARN L180 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 238 DAG size of output: 217 [2018-11-28 13:36:58,707 WARN L180 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 199 [2018-11-28 13:36:59,196 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 108 [2018-11-28 13:37:00,144 WARN L180 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 159 [2018-11-28 13:37:03,498 WARN L180 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 256 DAG size of output: 251 [2018-11-28 13:37:04,580 WARN L180 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-11-28 13:37:05,476 WARN L180 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-11-28 13:37:05,922 WARN L180 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-11-28 13:37:07,154 WARN L180 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 194 [2018-11-28 13:37:07,499 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 120 [2018-11-28 13:37:09,422 WARN L180 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 217 DAG size of output: 196 [2018-11-28 13:37:12,677 WARN L180 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 269 DAG size of output: 248 [2018-11-28 13:37:13,247 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-11-28 13:37:14,834 WARN L180 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 194 [2018-11-28 13:37:16,534 WARN L180 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 195 [2018-11-28 13:37:17,521 WARN L180 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 150 [2018-11-28 13:37:19,614 WARN L180 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 288 DAG size of output: 210 [2018-11-28 13:37:20,411 WARN L180 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-11-28 13:37:21,189 WARN L180 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-11-28 13:37:23,188 WARN L180 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 159 [2018-11-28 13:37:26,411 WARN L180 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 270 DAG size of output: 207 [2018-11-28 13:37:28,009 WARN L180 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-11-28 13:37:29,131 WARN L180 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2018-11-28 13:37:29,732 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-11-28 13:37:31,605 WARN L180 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 167 [2018-11-28 13:37:33,941 WARN L180 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 310 DAG size of output: 195 [2018-11-28 13:37:36,077 WARN L180 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 248 DAG size of output: 227 [2018-11-28 13:37:39,708 WARN L180 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 283 DAG size of output: 220 [2018-11-28 13:37:41,117 WARN L180 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 191 [2018-11-28 13:37:43,598 WARN L180 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 229 DAG size of output: 213 [2018-11-28 13:37:44,078 WARN L180 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-11-28 13:37:46,160 WARN L180 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 227 DAG size of output: 211 [2018-11-28 13:37:48,253 WARN L180 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 184 [2018-11-28 13:37:49,614 WARN L180 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 177 [2018-11-28 13:37:51,116 WARN L180 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 178 [2018-11-28 13:37:52,371 WARN L180 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 182 [2018-11-28 13:37:53,369 WARN L180 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 147 [2018-11-28 13:37:55,219 WARN L180 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 185 [2018-11-28 13:37:56,087 WARN L180 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-11-28 13:37:58,644 WARN L180 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 244 DAG size of output: 212 [2018-11-28 13:37:59,281 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-11-28 13:38:00,026 WARN L180 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-11-28 13:38:01,696 WARN L180 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 149 [2018-11-28 13:38:03,375 WARN L180 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 149 [2018-11-28 13:38:05,423 WARN L180 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2018-11-28 13:38:08,594 WARN L180 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 258 DAG size of output: 226 [2018-11-28 13:38:10,239 WARN L180 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 203 [2018-11-28 13:38:10,864 WARN L180 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-11-28 13:38:13,387 WARN L180 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 277 DAG size of output: 213 [2018-11-28 13:38:15,415 WARN L180 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 169 [2018-11-28 13:38:17,891 WARN L180 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 307 DAG size of output: 192 [2018-11-28 13:38:19,815 WARN L180 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 160 [2018-11-28 13:38:21,808 WARN L180 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 233 DAG size of output: 217 [2018-11-28 13:38:24,381 WARN L180 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 269 DAG size of output: 205 [2018-11-28 13:38:27,193 WARN L180 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 255 DAG size of output: 223 [2018-11-28 13:38:29,309 WARN L180 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 230 DAG size of output: 214 [2018-11-28 13:38:29,721 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2018-11-28 13:38:31,740 WARN L180 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 204 DAG size of output: 188 [2018-11-28 13:38:33,040 WARN L180 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 182 [2018-11-28 13:38:34,405 WARN L180 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 172 [2018-11-28 13:38:35,848 WARN L180 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 175 [2018-11-28 13:38:36,496 WARN L180 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-11-28 13:38:37,821 WARN L180 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 146 [2018-11-28 13:38:39,406 WARN L180 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 194 [2018-11-28 13:38:40,091 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 143 [2018-11-28 13:38:41,533 WARN L180 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 181 [2018-11-28 13:38:42,504 WARN L180 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-11-28 13:38:45,785 WARN L180 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 236 DAG size of output: 204 [2018-11-28 13:38:46,212 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-11-28 13:38:47,692 WARN L180 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 148 [2018-11-28 13:38:49,220 WARN L180 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 147 [2018-11-28 13:38:51,375 WARN L180 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 191 [2018-11-28 13:38:54,280 WARN L180 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 240 DAG size of output: 208 [2018-11-28 13:38:55,763 WARN L180 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-11-28 13:38:56,434 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-11-28 13:38:59,058 WARN L180 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 263 DAG size of output: 199 [2018-11-28 13:39:01,591 WARN L180 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 239 DAG size of output: 207 [2018-11-28 13:39:02,195 WARN L180 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2018-11-28 13:39:03,378 WARN L180 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 150 [2018-11-28 13:39:04,517 WARN L180 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 144 [2018-11-28 13:39:06,275 WARN L180 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 120 [2018-11-28 13:39:08,588 WARN L180 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 229 DAG size of output: 197 [2018-11-28 13:39:11,102 WARN L180 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 242 DAG size of output: 210 [2018-11-28 13:39:12,622 WARN L180 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 194 [2018-11-28 13:39:15,286 WARN L180 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 218 DAG size of output: 202 [2018-11-28 13:39:16,774 WARN L180 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 180 [2018-11-28 13:39:18,055 WARN L180 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 185 [2018-11-28 13:39:18,872 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-11-28 13:39:22,443 WARN L180 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 286 DAG size of output: 225 [2018-11-28 13:39:23,889 WARN L180 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 140 [2018-11-28 13:39:25,177 WARN L180 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 118 [2018-11-28 13:39:25,915 WARN L180 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-11-28 13:39:26,634 WARN L180 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-11-28 13:39:30,628 WARN L180 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 291 DAG size of output: 230 [2018-11-28 13:39:31,167 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-11-28 13:39:35,032 WARN L180 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 202 DAG size of output: 186 [2018-11-28 13:39:38,291 WARN L180 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 271 DAG size of output: 207 [2018-11-28 13:39:42,137 WARN L180 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 294 DAG size of output: 233 [2018-11-28 13:39:43,605 WARN L180 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 115 [2018-11-28 13:39:46,580 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 255 DAG size of output: 191 [2018-11-28 13:39:47,005 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-11-28 13:39:49,319 WARN L180 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 258 DAG size of output: 194 [2018-11-28 13:39:50,487 WARN L180 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 149 [2018-11-28 13:39:54,057 WARN L180 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 270 DAG size of output: 206 [2018-11-28 13:39:57,553 WARN L180 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 275 DAG size of output: 211 [2018-11-28 13:39:58,954 WARN L180 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 156 [2018-11-28 13:40:01,414 WARN L180 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 266 DAG size of output: 202 [2018-11-28 13:40:04,291 WARN L180 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 270 DAG size of output: 206 [2018-11-28 13:40:04,764 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 104 [2018-11-28 13:40:05,866 WARN L180 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 96 [2018-11-28 13:40:09,332 WARN L180 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 272 DAG size of output: 208 [2018-11-28 13:40:10,960 WARN L180 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 158 [2018-11-28 13:40:12,372 WARN L180 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 178 [2018-11-28 13:40:13,963 WARN L180 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 167 [2018-11-28 13:40:17,800 WARN L180 SmtUtils]: Spent 2.73 s on a formula simplification. DAG size of input: 295 DAG size of output: 233 [2018-11-28 13:40:19,025 WARN L180 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 156 [2018-11-28 13:40:21,685 WARN L180 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 228 DAG size of output: 196 [2018-11-28 13:40:22,231 WARN L180 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2018-11-28 13:40:22,975 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 159 [2018-11-28 13:40:26,638 WARN L180 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 234 DAG size of output: 220 [2018-11-28 13:40:29,649 WARN L180 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 215 DAG size of output: 211 [2018-11-28 13:40:32,979 WARN L180 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 295 DAG size of output: 220 [2018-11-28 13:40:34,309 WARN L180 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 156 [2018-11-28 13:40:35,691 WARN L180 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 52 [2018-11-28 13:40:37,659 WARN L180 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 148 [2018-11-28 13:40:39,118 WARN L180 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 137 [2018-11-28 13:40:42,557 WARN L180 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 308 DAG size of output: 223 [2018-11-28 13:40:45,369 WARN L180 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-11-28 13:40:47,129 WARN L180 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 216 DAG size of output: 163 [2018-11-28 13:40:49,923 WARN L180 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 231 DAG size of output: 199 [2018-11-28 13:40:51,132 WARN L180 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 169 [2018-11-28 13:40:54,515 WARN L180 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 278 DAG size of output: 213 [2018-11-28 13:40:58,436 WARN L180 SmtUtils]: Spent 2.94 s on a formula simplification. DAG size of input: 298 DAG size of output: 236 [2018-11-28 13:41:00,183 WARN L180 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 176 [2018-11-28 13:41:03,834 WARN L180 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 261 DAG size of output: 197 [2018-11-28 13:41:07,744 WARN L180 SmtUtils]: Spent 2.77 s on a formula simplification. DAG size of input: 297 DAG size of output: 222 [2018-11-28 13:41:12,299 WARN L180 SmtUtils]: Spent 2.70 s on a formula simplification. DAG size of input: 279 DAG size of output: 215 [2018-11-28 13:41:12,891 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-28 13:41:12,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-11-28 13:41:12,892 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.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:893) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.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) ... 43 more [2018-11-28 13:41:12,894 INFO L168 Benchmark]: Toolchain (without parser) took 848495.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 942.0 MB in the beginning and 898.0 MB in the end (delta: 44.0 MB). Peak memory consumption was 197.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:41:12,895 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-11-28 13:41:12,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.54 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:41:12,895 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.71 ms. Allocated memory is still 1.0 GB. Free memory is still 931.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:41:12,895 INFO L168 Benchmark]: Boogie Preprocessor took 17.68 ms. Allocated memory is still 1.0 GB. Free memory was 931.3 MB in the beginning and 925.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 13:41:12,895 INFO L168 Benchmark]: RCFGBuilder took 191.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -202.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-11-28 13:41:12,896 INFO L168 Benchmark]: TraceAbstraction took 848111.00 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.1 MB). Free memory was 1.1 GB in the beginning and 898.0 MB in the end (delta: 230.7 MB). Peak memory consumption was 232.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:41:12,897 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 157.54 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.3 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 14.71 ms. Allocated memory is still 1.0 GB. Free memory is still 931.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.68 ms. Allocated memory is still 1.0 GB. Free memory was 931.3 MB in the beginning and 925.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 191.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -202.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 848111.00 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.1 MB). Free memory was 1.1 GB in the beginning and 898.0 MB in the end (delta: 230.7 MB). Peak memory consumption was 232.8 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...