./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 aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/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_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/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_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/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_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/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-aa41828 [2018-11-23 02:03:56,859 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 02:03:56,860 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 02:03:56,867 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 02:03:56,868 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 02:03:56,868 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 02:03:56,869 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 02:03:56,870 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 02:03:56,871 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 02:03:56,872 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 02:03:56,872 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 02:03:56,872 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 02:03:56,873 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 02:03:56,874 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 02:03:56,874 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 02:03:56,875 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 02:03:56,875 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 02:03:56,877 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 02:03:56,878 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 02:03:56,879 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 02:03:56,880 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 02:03:56,880 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 02:03:56,881 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 02:03:56,881 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 02:03:56,881 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 02:03:56,882 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 02:03:56,882 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 02:03:56,883 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 02:03:56,883 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 02:03:56,884 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 02:03:56,884 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 02:03:56,885 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 02:03:56,885 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 02:03:56,885 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 02:03:56,886 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 02:03:56,886 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 02:03:56,887 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 02:03:56,893 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 02:03:56,894 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 02:03:56,894 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 02:03:56,894 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 02:03:56,895 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 02:03:56,895 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 02:03:56,895 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 02:03:56,895 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 02:03:56,895 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 02:03:56,895 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 02:03:56,895 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 02:03:56,896 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 02:03:56,896 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 02:03:56,896 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 02:03:56,896 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 02:03:56,896 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 02:03:56,896 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 02:03:56,896 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 02:03:56,896 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 02:03:56,897 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 02:03:56,897 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 02:03:56,897 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 02:03:56,897 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 02:03:56,897 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 02:03:56,897 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 02:03:56,898 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 02:03:56,898 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 02:03:56,898 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 02:03:56,898 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 02:03:56,898 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 02:03:56,898 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_5341eee8-e585-4037-bdc5-e9aef100af1e/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 [2018-11-23 02:03:56,921 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 02:03:56,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 02:03:56,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 02:03:56,932 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 02:03:56,932 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 02:03:56,933 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-23 02:03:56,967 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/data/92ea2c566/e12ba072b92745d8ba8d6ab2635be684/FLAGa4f8af573 [2018-11-23 02:03:57,265 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 02:03:57,265 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-23 02:03:57,269 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/data/92ea2c566/e12ba072b92745d8ba8d6ab2635be684/FLAGa4f8af573 [2018-11-23 02:03:57,277 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/data/92ea2c566/e12ba072b92745d8ba8d6ab2635be684 [2018-11-23 02:03:57,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 02:03:57,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 02:03:57,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 02:03:57,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 02:03:57,284 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 02:03:57,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:03:57" (1/1) ... [2018-11-23 02:03:57,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45abf0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:57, skipping insertion in model container [2018-11-23 02:03:57,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:03:57" (1/1) ... [2018-11-23 02:03:57,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 02:03:57,305 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 02:03:57,406 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:03:57,409 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 02:03:57,418 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:03:57,429 INFO L195 MainTranslator]: Completed translation [2018-11-23 02:03:57,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:57 WrapperNode [2018-11-23 02:03:57,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 02:03:57,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 02:03:57,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 02:03:57,430 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 02:03:57,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:57" (1/1) ... [2018-11-23 02:03:57,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:57" (1/1) ... [2018-11-23 02:03:57,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 02:03:57,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 02:03:57,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 02:03:57,445 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 02:03:57,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:57" (1/1) ... [2018-11-23 02:03:57,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:57" (1/1) ... [2018-11-23 02:03:57,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:57" (1/1) ... [2018-11-23 02:03:57,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:57" (1/1) ... [2018-11-23 02:03:57,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:57" (1/1) ... [2018-11-23 02:03:57,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:57" (1/1) ... [2018-11-23 02:03:57,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:57" (1/1) ... [2018-11-23 02:03:57,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 02:03:57,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 02:03:57,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 02:03:57,458 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 02:03:57,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/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 [2018-11-23 02:03:57,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 02:03:57,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 02:03:57,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 02:03:57,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 02:03:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 02:03:57,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 02:03:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 02:03:57,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 02:03:57,639 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 02:03:57,639 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 02:03:57,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:03:57 BoogieIcfgContainer [2018-11-23 02:03:57,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 02:03:57,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 02:03:57,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 02:03:57,643 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 02:03:57,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:03:57" (1/3) ... [2018-11-23 02:03:57,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a17fc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:03:57, skipping insertion in model container [2018-11-23 02:03:57,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:57" (2/3) ... [2018-11-23 02:03:57,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a17fc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:03:57, skipping insertion in model container [2018-11-23 02:03:57,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:03:57" (3/3) ... [2018-11-23 02:03:57,646 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-23 02:03:57,654 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 02:03:57,660 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 02:03:57,674 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 02:03:57,700 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 02:03:57,700 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 02:03:57,700 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 02:03:57,700 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 02:03:57,701 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 02:03:57,701 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 02:03:57,701 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 02:03:57,701 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 02:03:57,701 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 02:03:57,716 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-23 02:03:57,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 02:03:57,720 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:03:57,721 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:03:57,723 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:03:57,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:03:57,728 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2018-11-23 02:03:57,729 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:03:57,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:03:57,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:57,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:03:57,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:03:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:57,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:03:57,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 02:03:57,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 02:03:57,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 02:03:57,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 02:03:57,827 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-23 02:03:57,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:03:57,841 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-23 02:03:57,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 02:03:57,842 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-23 02:03:57,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:03:57,847 INFO L225 Difference]: With dead ends: 32 [2018-11-23 02:03:57,847 INFO L226 Difference]: Without dead ends: 13 [2018-11-23 02:03:57,849 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 [2018-11-23 02:03:57,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-23 02:03:57,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-23 02:03:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-23 02:03:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-11-23 02:03:57,871 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-11-23 02:03:57,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:03:57,872 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-23 02:03:57,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 02:03:57,872 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-11-23 02:03:57,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 02:03:57,872 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:03:57,872 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:03:57,872 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:03:57,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:03:57,873 INFO L82 PathProgramCache]: Analyzing trace with hash -158041290, now seen corresponding path program 1 times [2018-11-23 02:03:57,873 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:03:57,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:03:57,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:57,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:03:57,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:03:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:57,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:03:57,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:03:57,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:03:57,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:03:57,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:03:57,944 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2018-11-23 02:03:57,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:03:57,953 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-11-23 02:03:57,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:03:57,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-23 02:03:57,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:03:57,954 INFO L225 Difference]: With dead ends: 21 [2018-11-23 02:03:57,954 INFO L226 Difference]: Without dead ends: 16 [2018-11-23 02:03:57,955 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 [2018-11-23 02:03:57,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-23 02:03:57,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2018-11-23 02:03:57,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-23 02:03:57,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-11-23 02:03:57,957 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-11-23 02:03:57,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:03:57,958 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-23 02:03:57,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:03:57,958 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-23 02:03:57,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 02:03:57,958 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:03:57,958 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:03:57,959 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:03:57,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:03:57,959 INFO L82 PathProgramCache]: Analyzing trace with hash 743821333, now seen corresponding path program 1 times [2018-11-23 02:03:57,959 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:03:57,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:03:57,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:57,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:03:57,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:03:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:58,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:03:58,021 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/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 [2018-11-23 02:03:58,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:03:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:03:58,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:03:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:58,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:03:58,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-23 02:03:58,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 02:03:58,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 02:03:58,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 02:03:58,113 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2018-11-23 02:03:58,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:03:58,134 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2018-11-23 02:03:58,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 02:03:58,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-23 02:03:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:03:58,134 INFO L225 Difference]: With dead ends: 24 [2018-11-23 02:03:58,135 INFO L226 Difference]: Without dead ends: 19 [2018-11-23 02:03:58,135 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 [2018-11-23 02:03:58,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-23 02:03:58,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-11-23 02:03:58,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-23 02:03:58,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-11-23 02:03:58,138 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2018-11-23 02:03:58,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:03:58,139 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-11-23 02:03:58,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 02:03:58,139 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-11-23 02:03:58,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 02:03:58,139 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:03:58,139 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:03:58,139 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:03:58,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:03:58,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1182180650, now seen corresponding path program 2 times [2018-11-23 02:03:58,139 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:03:58,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:03:58,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:58,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:03:58,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:03:58,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:58,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:03:58,219 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/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 [2018-11-23 02:03:58,234 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 02:03:58,246 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 02:03:58,246 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:03:58,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:03:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:58,316 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:03:58,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-11-23 02:03:58,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 02:03:58,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 02:03:58,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-23 02:03:58,318 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 7 states. [2018-11-23 02:03:58,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:03:58,348 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2018-11-23 02:03:58,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 02:03:58,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-11-23 02:03:58,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:03:58,349 INFO L225 Difference]: With dead ends: 27 [2018-11-23 02:03:58,350 INFO L226 Difference]: Without dead ends: 22 [2018-11-23 02:03:58,350 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 [2018-11-23 02:03:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-23 02:03:58,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-11-23 02:03:58,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-23 02:03:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2018-11-23 02:03:58,354 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 16 [2018-11-23 02:03:58,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:03:58,354 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2018-11-23 02:03:58,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 02:03:58,354 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2018-11-23 02:03:58,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 02:03:58,355 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:03:58,355 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:03:58,355 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:03:58,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:03:58,355 INFO L82 PathProgramCache]: Analyzing trace with hash 2055818357, now seen corresponding path program 3 times [2018-11-23 02:03:58,355 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:03:58,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:03:58,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:58,356 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:03:58,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:03:58,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:58,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:03:58,416 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/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 [2018-11-23 02:03:58,430 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 02:03:58,439 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-23 02:03:58,439 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:03:58,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:03:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:58,516 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:03:58,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-11-23 02:03:58,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 02:03:58,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 02:03:58,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-23 02:03:58,517 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 9 states. [2018-11-23 02:03:58,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:03:58,554 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-11-23 02:03:58,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 02:03:58,554 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-11-23 02:03:58,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:03:58,555 INFO L225 Difference]: With dead ends: 30 [2018-11-23 02:03:58,555 INFO L226 Difference]: Without dead ends: 25 [2018-11-23 02:03:58,556 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 [2018-11-23 02:03:58,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-23 02:03:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-11-23 02:03:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-23 02:03:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-11-23 02:03:58,560 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 19 [2018-11-23 02:03:58,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:03:58,560 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-11-23 02:03:58,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 02:03:58,561 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-11-23 02:03:58,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 02:03:58,561 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:03:58,561 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:03:58,561 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:03:58,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:03:58,562 INFO L82 PathProgramCache]: Analyzing trace with hash 318767734, now seen corresponding path program 4 times [2018-11-23 02:03:58,562 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:03:58,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:03:58,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:58,563 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:03:58,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:03:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:58,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:03:58,633 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/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 [2018-11-23 02:03:58,642 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 02:03:58,649 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 02:03:58,650 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:03:58,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:03:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:58,759 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:03:58,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-11-23 02:03:58,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 02:03:58,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 02:03:58,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-11-23 02:03:58,760 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 11 states. [2018-11-23 02:03:58,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:03:58,829 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2018-11-23 02:03:58,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 02:03:58,829 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-11-23 02:03:58,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:03:58,830 INFO L225 Difference]: With dead ends: 33 [2018-11-23 02:03:58,830 INFO L226 Difference]: Without dead ends: 28 [2018-11-23 02:03:58,830 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 [2018-11-23 02:03:58,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-23 02:03:58,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-11-23 02:03:58,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-23 02:03:58,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2018-11-23 02:03:58,834 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 22 [2018-11-23 02:03:58,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:03:58,834 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2018-11-23 02:03:58,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 02:03:58,835 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2018-11-23 02:03:58,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 02:03:58,835 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:03:58,835 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:03:58,835 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:03:58,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:03:58,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1904607445, now seen corresponding path program 5 times [2018-11-23 02:03:58,836 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:03:58,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:03:58,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:58,837 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:03:58,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:03:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:58,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:03:58,958 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/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 [2018-11-23 02:03:58,963 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 02:03:58,977 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-23 02:03:58,977 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:03:58,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:03:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:59,117 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:03:59,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-11-23 02:03:59,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 02:03:59,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 02:03:59,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-23 02:03:59,118 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 13 states. [2018-11-23 02:03:59,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:03:59,233 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2018-11-23 02:03:59,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 02:03:59,233 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2018-11-23 02:03:59,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:03:59,234 INFO L225 Difference]: With dead ends: 36 [2018-11-23 02:03:59,234 INFO L226 Difference]: Without dead ends: 31 [2018-11-23 02:03:59,234 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 [2018-11-23 02:03:59,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-23 02:03:59,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2018-11-23 02:03:59,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-23 02:03:59,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2018-11-23 02:03:59,239 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 25 [2018-11-23 02:03:59,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:03:59,240 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2018-11-23 02:03:59,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 02:03:59,240 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2018-11-23 02:03:59,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-23 02:03:59,240 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:03:59,240 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:03:59,241 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:03:59,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:03:59,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1015181846, now seen corresponding path program 6 times [2018-11-23 02:03:59,241 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:03:59,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:03:59,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:59,242 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:03:59,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:03:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:59,325 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:03:59,325 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/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 [2018-11-23 02:03:59,332 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 02:03:59,349 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-23 02:03:59,349 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:03:59,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:03:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:59,500 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:03:59,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-11-23 02:03:59,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 02:03:59,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 02:03:59,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-11-23 02:03:59,501 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 15 states. [2018-11-23 02:03:59,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:03:59,613 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2018-11-23 02:03:59,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 02:03:59,613 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-11-23 02:03:59,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:03:59,614 INFO L225 Difference]: With dead ends: 39 [2018-11-23 02:03:59,614 INFO L226 Difference]: Without dead ends: 34 [2018-11-23 02:03:59,614 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 [2018-11-23 02:03:59,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-23 02:03:59,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-11-23 02:03:59,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-23 02:03:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2018-11-23 02:03:59,617 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 28 [2018-11-23 02:03:59,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:03:59,618 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2018-11-23 02:03:59,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 02:03:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2018-11-23 02:03:59,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-23 02:03:59,618 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:03:59,619 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:03:59,619 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:03:59,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:03:59,619 INFO L82 PathProgramCache]: Analyzing trace with hash -209588939, now seen corresponding path program 7 times [2018-11-23 02:03:59,619 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:03:59,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:03:59,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:59,620 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:03:59,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:03:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:03:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:59,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:03:59,714 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/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 [2018-11-23 02:03:59,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:03:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:03:59,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:03:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:03:59,903 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:03:59,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-11-23 02:03:59,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-23 02:03:59,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-23 02:03:59,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2018-11-23 02:03:59,904 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 17 states. [2018-11-23 02:04:00,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:04:00,040 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2018-11-23 02:04:00,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 02:04:00,041 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2018-11-23 02:04:00,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:04:00,041 INFO L225 Difference]: With dead ends: 42 [2018-11-23 02:04:00,041 INFO L226 Difference]: Without dead ends: 37 [2018-11-23 02:04:00,042 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 [2018-11-23 02:04:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-23 02:04:00,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2018-11-23 02:04:00,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-23 02:04:00,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2018-11-23 02:04:00,047 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 31 [2018-11-23 02:04:00,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:04:00,048 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2018-11-23 02:04:00,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-23 02:04:00,048 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2018-11-23 02:04:00,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-23 02:04:00,048 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:04:00,049 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:04:00,049 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:04:00,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:04:00,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1608865354, now seen corresponding path program 8 times [2018-11-23 02:04:00,049 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:04:00,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:04:00,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:04:00,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:04:00,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:04:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:04:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:04:00,081 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #39#return; [?] CALL call #t~ret1 := main(); [?] ~x~0 := #t~nondet0;havoc #t~nondet0;havoc ~y~0;havoc ~c~0;~y~0 := 0;~c~0 := 0; VAL [main_~c~0=0, main_~x~0=1, main_~y~0=0] [?] assume !!(~c~0 % 256 < 8);~i~0 := ~shiftLeft(1, ~c~0 % 256);~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [main_~c~0=0, main_~x~0=1, main_~y~0=0] [?] assume 0 != ~bit~0 % 256;~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [main_~bit~0=1, main_~c~0=0, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] ~c~0 := 1 + ~c~0 % 256; VAL [main_~bit~0=1, main_~c~0=1, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] assume !!(~c~0 % 256 < 8);~i~0 := ~shiftLeft(1, ~c~0 % 256);~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [main_~c~0=1, main_~x~0=1, main_~y~0=0] [?] assume 0 != ~bit~0 % 256;~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [main_~bit~0=1, main_~c~0=1, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] ~c~0 := 1 + ~c~0 % 256; VAL [main_~bit~0=1, main_~c~0=2, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] assume !!(~c~0 % 256 < 8);~i~0 := ~shiftLeft(1, ~c~0 % 256);~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [main_~c~0=2, main_~x~0=1, main_~y~0=0] [?] assume 0 != ~bit~0 % 256;~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [main_~bit~0=1, main_~c~0=2, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] ~c~0 := 1 + ~c~0 % 256; VAL [main_~bit~0=1, main_~c~0=3, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] assume !!(~c~0 % 256 < 8);~i~0 := ~shiftLeft(1, ~c~0 % 256);~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [main_~c~0=3, main_~x~0=1, main_~y~0=0] [?] assume 0 != ~bit~0 % 256;~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [main_~bit~0=1, main_~c~0=3, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] ~c~0 := 1 + ~c~0 % 256; VAL [main_~bit~0=1, main_~c~0=4, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] assume !!(~c~0 % 256 < 8);~i~0 := ~shiftLeft(1, ~c~0 % 256);~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [main_~c~0=4, main_~x~0=1, main_~y~0=0] [?] assume 0 != ~bit~0 % 256;~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [main_~bit~0=1, main_~c~0=4, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] ~c~0 := 1 + ~c~0 % 256; VAL [main_~bit~0=1, main_~c~0=5, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] assume !!(~c~0 % 256 < 8);~i~0 := ~shiftLeft(1, ~c~0 % 256);~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [main_~c~0=5, main_~x~0=1, main_~y~0=0] [?] assume 0 != ~bit~0 % 256;~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [main_~bit~0=1, main_~c~0=5, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] ~c~0 := 1 + ~c~0 % 256; VAL [main_~bit~0=1, main_~c~0=6, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] assume !!(~c~0 % 256 < 8);~i~0 := ~shiftLeft(1, ~c~0 % 256);~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [main_~c~0=6, main_~x~0=1, main_~y~0=0] [?] assume 0 != ~bit~0 % 256;~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [main_~bit~0=1, main_~c~0=6, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] ~c~0 := 1 + ~c~0 % 256; VAL [main_~bit~0=1, main_~c~0=7, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] assume !!(~c~0 % 256 < 8);~i~0 := ~shiftLeft(1, ~c~0 % 256);~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [main_~c~0=7, main_~x~0=1, main_~y~0=0] [?] assume 0 != ~bit~0 % 256;~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [main_~bit~0=1, main_~c~0=7, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] ~c~0 := 1 + ~c~0 % 256; VAL [main_~bit~0=1, main_~c~0=8, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] assume !(~c~0 % 256 < 8); VAL [main_~bit~0=1, main_~c~0=8, main_~i~0=0, main_~x~0=1, main_~y~0=0] [?] CALL call __VERIFIER_assert((if ~x~0 % 256 == ~y~0 % 256 then 1 else 0)); VAL [|__VERIFIER_assert_#in~cond|=0] [?] ~cond := #in~cond; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] assume 0 == ~cond; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] assume !false; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] havoc ~y~0; [L16] havoc ~c~0; [L18] ~y~0 := 0; [L19] ~c~0 := 0; VAL [~c~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=0, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=0, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=1, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=1, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=1, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=2, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=2, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=2, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=3, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=3, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=3, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=4, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=4, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=4, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=5, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=5, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=5, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=6, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=6, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=6, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=7, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=7, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=7, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=8, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !(~c~0 % 256 < 8); VAL [~bit~0=1, ~c~0=8, ~i~0=0, ~x~0=1, ~y~0=0] [L28] CALL call __VERIFIER_assert((if ~x~0 % 256 == ~y~0 % 256 then 1 else 0)); VAL [#in~cond=0] [L4-L9] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L5-L7] assume 0 == ~cond; VAL [#in~cond=0, ~cond=0] [L6] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] havoc ~y~0; [L16] havoc ~c~0; [L18] ~y~0 := 0; [L19] ~c~0 := 0; VAL [~c~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=0, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=0, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=1, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=1, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=1, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=2, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=2, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=2, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=3, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=3, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=3, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=4, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=4, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=4, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=5, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=5, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=5, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=6, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=6, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=6, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=7, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !!(~c~0 % 256 < 8); [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=7, ~x~0=1, ~y~0=0] [L23-L25] assume 0 != ~bit~0 % 256; [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=7, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=8, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] assume !(~c~0 % 256 < 8); VAL [~bit~0=1, ~c~0=8, ~i~0=0, ~x~0=1, ~y~0=0] [L28] CALL call __VERIFIER_assert((if ~x~0 % 256 == ~y~0 % 256 then 1 else 0)); VAL [#in~cond=0] [L4-L9] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L5-L7] assume 0 == ~cond; VAL [#in~cond=0, ~cond=0] [L6] assert false; VAL [#in~cond=0, ~cond=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] havoc ~y~0; [L16] havoc ~c~0; [L18] ~y~0 := 0; [L19] ~c~0 := 0; VAL [~c~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=0, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=0, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=1, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=1, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=1, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=2, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=2, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=2, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=3, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=3, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=3, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=4, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=4, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=4, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=5, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=5, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=5, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=6, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=6, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=6, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=7, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=7, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=7, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=8, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND TRUE !(~c~0 % 256 < 8) VAL [~bit~0=1, ~c~0=8, ~i~0=0, ~x~0=1, ~y~0=0] [L28] CALL call __VERIFIER_assert((if ~x~0 % 256 == ~y~0 % 256 then 1 else 0)); VAL [#in~cond=0] [L4-L9] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L5] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L6] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] havoc ~y~0; [L16] havoc ~c~0; [L18] ~y~0 := 0; [L19] ~c~0 := 0; VAL [~c~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=0, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=0, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=1, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=1, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=1, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=2, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=2, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=2, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=3, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=3, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=3, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=4, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=4, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=4, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=5, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=5, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=5, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=6, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=6, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=6, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=7, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=7, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=7, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=8, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND TRUE !(~c~0 % 256 < 8) VAL [~bit~0=1, ~c~0=8, ~i~0=0, ~x~0=1, ~y~0=0] [L28] CALL call __VERIFIER_assert((if ~x~0 % 256 == ~y~0 % 256 then 1 else 0)); VAL [#in~cond=0] [L4-L9] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L5] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L6] assert false; VAL [#in~cond=0, ~cond=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] havoc ~y~0; [L16] havoc ~c~0; [L18] ~y~0 := 0; [L19] ~c~0 := 0; VAL [~c~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=0, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=0, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=1, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=1, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=1, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=2, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=2, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=2, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=3, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=3, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=3, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=4, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=4, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=4, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=5, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=5, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=5, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=6, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=6, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=6, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=7, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=7, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=7, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=8, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND TRUE !(~c~0 % 256 < 8) VAL [~bit~0=1, ~c~0=8, ~i~0=0, ~x~0=1, ~y~0=0] [L28] CALL call __VERIFIER_assert((if ~x~0 % 256 == ~y~0 % 256 then 1 else 0)); VAL [#in~cond=0] [L4-L9] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L5] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L6] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L14] ~x~0 := #t~nondet0; [L14] havoc #t~nondet0; [L15] havoc ~y~0; [L16] havoc ~c~0; [L18] ~y~0 := 0; [L19] ~c~0 := 0; VAL [~c~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=0, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=0, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=1, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=1, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=1, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=2, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=2, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=2, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=3, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=3, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=3, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=4, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=4, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=4, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=5, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=5, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=5, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=6, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=6, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=6, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=7, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND FALSE !(!(~c~0 % 256 < 8)) [L21] ~i~0 := ~shiftLeft(1, ~c~0 % 256); [L22] ~bit~0 := ~bitwiseAnd(~x~0 % 256, ~i~0 % 256); VAL [~c~0=7, ~x~0=1, ~y~0=0] [L23] COND TRUE 0 != ~bit~0 % 256 [L24] ~y~0 := ~y~0 % 256 + ~i~0 % 256; VAL [~bit~0=1, ~c~0=7, ~i~0=0, ~x~0=1, ~y~0=0] [L26] ~c~0 := 1 + ~c~0 % 256; VAL [~bit~0=1, ~c~0=8, ~i~0=0, ~x~0=1, ~y~0=0] [L20-L27] COND TRUE !(~c~0 % 256 < 8) VAL [~bit~0=1, ~c~0=8, ~i~0=0, ~x~0=1, ~y~0=0] [L28] CALL call __VERIFIER_assert((if ~x~0 % 256 == ~y~0 % 256 then 1 else 0)); VAL [#in~cond=0] [L4-L9] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L5] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L6] assert false; VAL [#in~cond=0, ~cond=0] [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] ----- [2018-11-23 02:04:00,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:04:00 BoogieIcfgContainer [2018-11-23 02:04:00,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 02:04:00,121 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 02:04:00,121 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 02:04:00,121 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 02:04:00,121 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:03:57" (3/4) ... [2018-11-23 02:04:00,125 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 02:04:00,125 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 02:04:00,125 INFO L168 Benchmark]: Toolchain (without parser) took 2846.17 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 958.2 MB in the beginning and 1.0 GB in the end (delta: -60.4 MB). Peak memory consumption was 57.1 MB. Max. memory is 11.5 GB. [2018-11-23 02:04:00,127 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:04:00,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.62 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:04:00,127 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.01 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:04:00,128 INFO L168 Benchmark]: Boogie Preprocessor took 13.43 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:04:00,128 INFO L168 Benchmark]: RCFGBuilder took 181.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -155.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-23 02:04:00,129 INFO L168 Benchmark]: TraceAbstraction took 2480.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 82.1 MB). Peak memory consumption was 82.1 MB. Max. memory is 11.5 GB. [2018-11-23 02:04:00,129 INFO L168 Benchmark]: Witness Printer took 3.96 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:04:00,132 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 149.62 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 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 14.01 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.43 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 181.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -155.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2480.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 82.1 MB). Peak memory consumption was 82.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.96 ms. Allocated memory is still 1.1 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, 2.4s OverallTime, 10 OverallIterations, 8 TraceHistogramMax, 0.5s 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, 0.1s SatisfiabilityAnalysisTime, 1.2s 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-aa41828 [2018-11-23 02:04:01,552 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 02:04:01,553 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 02:04:01,561 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 02:04:01,561 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 02:04:01,561 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 02:04:01,562 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 02:04:01,563 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 02:04:01,565 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 02:04:01,565 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 02:04:01,566 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 02:04:01,566 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 02:04:01,567 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 02:04:01,567 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 02:04:01,568 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 02:04:01,569 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 02:04:01,569 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 02:04:01,570 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 02:04:01,572 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 02:04:01,573 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 02:04:01,573 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 02:04:01,574 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 02:04:01,576 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 02:04:01,576 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 02:04:01,576 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 02:04:01,577 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 02:04:01,578 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 02:04:01,578 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 02:04:01,579 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 02:04:01,579 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 02:04:01,579 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 02:04:01,580 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 02:04:01,580 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 02:04:01,580 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 02:04:01,581 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 02:04:01,581 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 02:04:01,581 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-23 02:04:01,591 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 02:04:01,591 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 02:04:01,592 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 02:04:01,592 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 02:04:01,593 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 02:04:01,593 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 02:04:01,593 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 02:04:01,593 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 02:04:01,593 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 02:04:01,593 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 02:04:01,593 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 02:04:01,594 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 02:04:01,594 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 02:04:01,594 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 02:04:01,594 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 02:04:01,594 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 02:04:01,594 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 02:04:01,594 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 02:04:01,594 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 02:04:01,594 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 02:04:01,595 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 02:04:01,595 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 02:04:01,596 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 02:04:01,596 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 02:04:01,596 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 02:04:01,596 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 02:04:01,596 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 02:04:01,596 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 02:04:01,596 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-23 02:04:01,596 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 02:04:01,597 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 02:04:01,597 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 02:04:01,597 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_5341eee8-e585-4037-bdc5-e9aef100af1e/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 [2018-11-23 02:04:01,625 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 02:04:01,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 02:04:01,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 02:04:01,638 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 02:04:01,639 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 02:04:01,639 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-23 02:04:01,683 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/data/fea119a89/cad728673df048a396c93ca4dde4aee6/FLAGcbdb84847 [2018-11-23 02:04:02,074 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 02:04:02,074 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-23 02:04:02,078 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/data/fea119a89/cad728673df048a396c93ca4dde4aee6/FLAGcbdb84847 [2018-11-23 02:04:02,087 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/data/fea119a89/cad728673df048a396c93ca4dde4aee6 [2018-11-23 02:04:02,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 02:04:02,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 02:04:02,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 02:04:02,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 02:04:02,093 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 02:04:02,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:04:02" (1/1) ... [2018-11-23 02:04:02,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8d06e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:02, skipping insertion in model container [2018-11-23 02:04:02,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:04:02" (1/1) ... [2018-11-23 02:04:02,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 02:04:02,115 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 02:04:02,240 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:04:02,243 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 02:04:02,254 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:04:02,263 INFO L195 MainTranslator]: Completed translation [2018-11-23 02:04:02,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:02 WrapperNode [2018-11-23 02:04:02,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 02:04:02,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 02:04:02,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 02:04:02,264 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 02:04:02,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:02" (1/1) ... [2018-11-23 02:04:02,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:02" (1/1) ... [2018-11-23 02:04:02,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 02:04:02,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 02:04:02,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 02:04:02,277 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 02:04:02,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:02" (1/1) ... [2018-11-23 02:04:02,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:02" (1/1) ... [2018-11-23 02:04:02,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:02" (1/1) ... [2018-11-23 02:04:02,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:02" (1/1) ... [2018-11-23 02:04:02,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:02" (1/1) ... [2018-11-23 02:04:02,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:02" (1/1) ... [2018-11-23 02:04:02,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:02" (1/1) ... [2018-11-23 02:04:02,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 02:04:02,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 02:04:02,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 02:04:02,292 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 02:04:02,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/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 [2018-11-23 02:04:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 02:04:02,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 02:04:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 02:04:02,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 02:04:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 02:04:02,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 02:04:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 02:04:02,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 02:04:02,481 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 02:04:02,481 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 02:04:02,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:04:02 BoogieIcfgContainer [2018-11-23 02:04:02,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 02:04:02,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 02:04:02,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 02:04:02,484 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 02:04:02,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:04:02" (1/3) ... [2018-11-23 02:04:02,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d72082c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:04:02, skipping insertion in model container [2018-11-23 02:04:02,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:02" (2/3) ... [2018-11-23 02:04:02,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d72082c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:04:02, skipping insertion in model container [2018-11-23 02:04:02,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:04:02" (3/3) ... [2018-11-23 02:04:02,487 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-23 02:04:02,493 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 02:04:02,497 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 02:04:02,506 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 02:04:02,524 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 02:04:02,524 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 02:04:02,524 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 02:04:02,524 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 02:04:02,524 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 02:04:02,525 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 02:04:02,525 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 02:04:02,525 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 02:04:02,525 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 02:04:02,539 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-23 02:04:02,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 02:04:02,543 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:04:02,544 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:04:02,545 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:04:02,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:04:02,548 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2018-11-23 02:04:02,551 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 02:04:02,551 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 02:04:02,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:04:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:04:02,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:04:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:04:02,596 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 02:04:02,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:04:02,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 02:04:02,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 02:04:02,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 02:04:02,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 02:04:02,611 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-23 02:04:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:04:02,626 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-23 02:04:02,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 02:04:02,627 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-23 02:04:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:04:02,632 INFO L225 Difference]: With dead ends: 32 [2018-11-23 02:04:02,632 INFO L226 Difference]: Without dead ends: 13 [2018-11-23 02:04:02,634 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 [2018-11-23 02:04:02,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-23 02:04:02,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-23 02:04:02,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-23 02:04:02,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-11-23 02:04:02,655 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-11-23 02:04:02,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:04:02,655 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-23 02:04:02,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 02:04:02,656 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-11-23 02:04:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 02:04:02,656 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:04:02,656 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:04:02,656 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:04:02,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:04:02,657 INFO L82 PathProgramCache]: Analyzing trace with hash -158041290, now seen corresponding path program 1 times [2018-11-23 02:04:02,657 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 02:04:02,657 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 02:04:02,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:04:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:04:02,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:04:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:04:02,718 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 02:04:02,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:04:02,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:04:02,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:04:02,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:04:02,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:04:02,720 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2018-11-23 02:04:02,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:04:02,734 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-11-23 02:04:02,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:04:02,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-23 02:04:02,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:04:02,735 INFO L225 Difference]: With dead ends: 21 [2018-11-23 02:04:02,735 INFO L226 Difference]: Without dead ends: 16 [2018-11-23 02:04:02,735 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 [2018-11-23 02:04:02,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-23 02:04:02,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2018-11-23 02:04:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-23 02:04:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-11-23 02:04:02,738 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-11-23 02:04:02,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:04:02,738 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-23 02:04:02,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:04:02,738 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-23 02:04:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 02:04:02,738 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:04:02,738 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:04:02,739 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:04:02,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:04:02,739 INFO L82 PathProgramCache]: Analyzing trace with hash 743821333, now seen corresponding path program 1 times [2018-11-23 02:04:02,739 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 02:04:02,739 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 02:04:02,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:04:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:04:02,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:04:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:04:02,794 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 02:04:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:04:02,822 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:04:02,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-23 02:04:02,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 02:04:02,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 02:04:02,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-23 02:04:02,823 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 6 states. [2018-11-23 02:04:02,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:04:02,879 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2018-11-23 02:04:02,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 02:04:02,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-23 02:04:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:04:02,880 INFO L225 Difference]: With dead ends: 28 [2018-11-23 02:04:02,880 INFO L226 Difference]: Without dead ends: 23 [2018-11-23 02:04:02,881 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 [2018-11-23 02:04:02,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-23 02:04:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-23 02:04:02,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-23 02:04:02,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-11-23 02:04:02,885 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2018-11-23 02:04:02,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:04:02,885 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-11-23 02:04:02,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 02:04:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-11-23 02:04:02,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 02:04:02,886 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:04:02,886 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:04:02,886 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:04:02,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:04:02,887 INFO L82 PathProgramCache]: Analyzing trace with hash 318767734, now seen corresponding path program 2 times [2018-11-23 02:04:02,887 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 02:04:02,887 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 02:04:02,899 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-23 02:04:02,925 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 02:04:02,925 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:04:02,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:04:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:04:02,962 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 02:04:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:04:03,071 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:04:03,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-11-23 02:04:03,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 02:04:03,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 02:04:03,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-11-23 02:04:03,072 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 12 states. [2018-11-23 02:04:03,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:04:03,208 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2018-11-23 02:04:03,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 02:04:03,210 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-11-23 02:04:03,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:04:03,211 INFO L225 Difference]: With dead ends: 40 [2018-11-23 02:04:03,211 INFO L226 Difference]: Without dead ends: 35 [2018-11-23 02:04:03,212 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 [2018-11-23 02:04:03,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-23 02:04:03,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-23 02:04:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-23 02:04:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2018-11-23 02:04:03,218 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 22 [2018-11-23 02:04:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:04:03,218 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2018-11-23 02:04:03,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 02:04:03,218 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2018-11-23 02:04:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-23 02:04:03,219 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:04:03,219 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:04:03,219 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:04:03,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:04:03,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1608865354, now seen corresponding path program 3 times [2018-11-23 02:04:03,220 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 02:04:03,220 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 02:04:03,242 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-23 02:04:03,353 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-23 02:04:03,353 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:04:03,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:04:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:04:05,357 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 02:04:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:04:10,818 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:04:10,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 56 [2018-11-23 02:04:10,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-11-23 02:04:10,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-11-23 02:04:10,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=2796, Unknown=0, NotChecked=0, Total=3080 [2018-11-23 02:04:10,819 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 56 states. [2018-11-23 02:04:11,297 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 102 [2018-11-23 02:04:13,355 WARN L180 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 268 DAG size of output: 239 [2018-11-23 02:04:15,246 WARN L180 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 230 DAG size of output: 220 [2018-11-23 02:04:15,601 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 107 [2018-11-23 02:04:17,233 WARN L180 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 209 DAG size of output: 193 [2018-11-23 02:04:18,995 WARN L180 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 230 DAG size of output: 217 [2018-11-23 02:04:19,516 WARN L180 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-11-23 02:04:19,976 WARN L180 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-11-23 02:04:21,058 WARN L180 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2018-11-23 02:04:21,462 WARN L180 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-11-23 02:04:21,979 WARN L180 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 110 [2018-11-23 02:04:22,296 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 128 [2018-11-23 02:04:23,874 WARN L180 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 143 DAG size of output: 139 [2018-11-23 02:04:25,948 WARN L180 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 268 DAG size of output: 236 [2018-11-23 02:04:26,502 WARN L180 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-11-23 02:04:28,467 WARN L180 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 247 DAG size of output: 228 [2018-11-23 02:04:30,210 WARN L180 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 228 DAG size of output: 209 [2018-11-23 02:04:30,594 WARN L180 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-11-23 02:04:31,575 WARN L180 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 170 [2018-11-23 02:04:32,111 WARN L180 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-11-23 02:04:32,610 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-11-23 02:04:33,363 WARN L180 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 111 [2018-11-23 02:04:34,942 WARN L180 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 140 DAG size of output: 136 [2018-11-23 02:04:35,766 WARN L180 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-11-23 02:04:36,474 WARN L180 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-11-23 02:04:38,306 WARN L180 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 172 [2018-11-23 02:04:39,188 WARN L180 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 116 [2018-11-23 02:04:41,501 WARN L180 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 250 DAG size of output: 227 [2018-11-23 02:04:43,996 WARN L180 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 234 DAG size of output: 215 [2018-11-23 02:04:46,374 WARN L180 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 232 DAG size of output: 213 [2018-11-23 02:04:47,814 WARN L180 SmtUtils]: Spent 856.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 189 [2018-11-23 02:04:49,544 WARN L180 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2018-11-23 02:04:51,427 WARN L180 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 218 [2018-11-23 02:04:52,421 WARN L180 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-11-23 02:04:53,652 WARN L180 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 112 [2018-11-23 02:04:54,880 WARN L180 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 116 [2018-11-23 02:04:55,346 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-11-23 02:04:55,675 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-11-23 02:04:57,555 WARN L180 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 165 [2018-11-23 02:04:58,547 WARN L180 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 101 [2018-11-23 02:05:00,441 WARN L180 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 226 DAG size of output: 207 [2018-11-23 02:05:02,270 WARN L180 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 226 DAG size of output: 207 [2018-11-23 02:05:03,934 WARN L180 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 199 [2018-11-23 02:05:06,267 WARN L180 SmtUtils]: Spent 957.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 211 [2018-11-23 02:05:07,417 WARN L180 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 115 [2018-11-23 02:05:08,204 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 99 [2018-11-23 02:05:10,474 WARN L180 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 301 DAG size of output: 222 [2018-11-23 02:05:11,851 WARN L180 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 133 [2018-11-23 02:05:14,318 WARN L180 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 158 [2018-11-23 02:05:15,933 WARN L180 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 214 [2018-11-23 02:05:18,703 WARN L180 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 310 DAG size of output: 231 [2018-11-23 02:05:19,875 WARN L180 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 131 [2018-11-23 02:05:21,429 WARN L180 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 203 [2018-11-23 02:05:23,235 WARN L180 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2018-11-23 02:05:24,986 WARN L180 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 194 [2018-11-23 02:05:27,438 WARN L180 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 208 [2018-11-23 02:05:28,876 WARN L180 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 184 [2018-11-23 02:05:29,776 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 178 [2018-11-23 02:05:31,112 WARN L180 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 129 [2018-11-23 02:05:31,849 WARN L180 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 97 [2018-11-23 02:05:34,163 WARN L180 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 301 DAG size of output: 222 [2018-11-23 02:05:36,642 WARN L180 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 262 DAG size of output: 224 [2018-11-23 02:05:38,682 WARN L180 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 214 [2018-11-23 02:05:40,129 WARN L180 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 147 [2018-11-23 02:05:42,281 WARN L180 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 161 [2018-11-23 02:05:43,913 WARN L180 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 214 [2018-11-23 02:05:46,917 WARN L180 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 310 DAG size of output: 231 [2018-11-23 02:05:48,721 WARN L180 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 299 DAG size of output: 217 [2018-11-23 02:05:51,595 WARN L180 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 268 DAG size of output: 230 [2018-11-23 02:05:53,495 WARN L180 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 211 [2018-11-23 02:05:56,049 WARN L180 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 264 DAG size of output: 226 [2018-11-23 02:05:57,440 WARN L180 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 145 [2018-11-23 02:05:59,202 WARN L180 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 219 DAG size of output: 200 [2018-11-23 02:06:01,000 WARN L180 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 197 [2018-11-23 02:06:03,658 WARN L180 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 306 DAG size of output: 230 [2018-11-23 02:06:05,167 WARN L180 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 184 [2018-11-23 02:06:06,926 WARN L180 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 187 [2018-11-23 02:06:08,350 WARN L180 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 181 [2018-11-23 02:06:09,803 WARN L180 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 143 [2018-11-23 02:06:12,130 WARN L180 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 309 DAG size of output: 233 [2018-11-23 02:06:14,667 WARN L180 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 262 DAG size of output: 224 [2018-11-23 02:06:17,761 WARN L180 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 267 DAG size of output: 229 [2018-11-23 02:06:20,385 WARN L180 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 257 DAG size of output: 219 [2018-11-23 02:06:22,100 WARN L180 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 389 DAG size of output: 173 [2018-11-23 02:06:23,970 WARN L180 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 304 DAG size of output: 228 [2018-11-23 02:06:26,791 WARN L180 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 318 DAG size of output: 242 [2018-11-23 02:06:28,561 WARN L180 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 299 DAG size of output: 217 [2018-11-23 02:06:31,559 WARN L180 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 268 DAG size of output: 230 [2018-11-23 02:06:33,562 WARN L180 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 302 DAG size of output: 220 [2018-11-23 02:06:36,692 WARN L180 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 270 DAG size of output: 232 [2018-11-23 02:06:38,755 WARN L180 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 214 [2018-11-23 02:06:41,556 WARN L180 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 266 DAG size of output: 228 [2018-11-23 02:06:43,030 WARN L180 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 159 [2018-11-23 02:06:46,136 WARN L180 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 311 DAG size of output: 234 [2018-11-23 02:06:47,631 WARN L180 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 184 [2018-11-23 02:06:49,632 WARN L180 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 187 [2018-11-23 02:06:51,567 WARN L180 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 190 [2018-11-23 02:06:53,162 WARN L180 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 184 [2018-11-23 02:06:54,819 WARN L180 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 377 DAG size of output: 165 [2018-11-23 02:06:56,883 WARN L180 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 105 [2018-11-23 02:06:59,765 WARN L180 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 155 [2018-11-23 02:07:02,209 WARN L180 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 231 DAG size of output: 192 [2018-11-23 02:07:05,650 WARN L180 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 262 DAG size of output: 224 [2018-11-23 02:07:09,175 WARN L180 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 267 DAG size of output: 229 [2018-11-23 02:07:10,664 WARN L180 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 159 [2018-11-23 02:07:12,454 WARN L180 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 389 DAG size of output: 70 [2018-11-23 02:07:15,510 WARN L180 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 315 DAG size of output: 213 [2018-11-23 02:07:17,744 WARN L180 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 227 [2018-11-23 02:07:21,333 WARN L180 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 313 DAG size of output: 211 [2018-11-23 02:07:23,683 WARN L180 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 363 DAG size of output: 221 [2018-11-23 02:07:25,567 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 349 DAG size of output: 207 [2018-11-23 02:07:27,853 WARN L180 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 323 DAG size of output: 223 [2018-11-23 02:07:28,904 WARN L180 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 122 [2018-11-23 02:07:30,916 WARN L180 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 222 DAG size of output: 202 [2018-11-23 02:07:31,708 WARN L180 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 103 [2018-11-23 02:07:32,758 WARN L180 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 194 [2018-11-23 02:07:36,345 WARN L180 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 308 DAG size of output: 231 [2018-11-23 02:07:39,243 WARN L180 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 320 DAG size of output: 243 [2018-11-23 02:07:42,119 WARN L180 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 299 DAG size of output: 217 [2018-11-23 02:07:45,196 WARN L180 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 268 DAG size of output: 230 [2018-11-23 02:07:48,055 WARN L180 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 302 DAG size of output: 220 [2018-11-23 02:07:51,172 WARN L180 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 270 DAG size of output: 232 [2018-11-23 02:07:53,238 WARN L180 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 399 DAG size of output: 167 [2018-11-23 02:07:56,129 WARN L180 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 215 [2018-11-23 02:07:58,276 WARN L180 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 187 [2018-11-23 02:08:00,502 WARN L180 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 190 [2018-11-23 02:08:01,980 WARN L180 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 165 [2018-11-23 02:08:02,420 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-11-23 02:08:05,900 WARN L180 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 285 DAG size of output: 243 [2018-11-23 02:08:07,558 WARN L180 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2018-11-23 02:08:11,042 WARN L180 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 272 DAG size of output: 234 [2018-11-23 02:08:13,423 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 392 DAG size of output: 187 [2018-11-23 02:08:15,407 WARN L180 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 224 DAG size of output: 205 [2018-11-23 02:08:18,135 WARN L180 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 214 DAG size of output: 200 [2018-11-23 02:08:20,315 WARN L180 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 246 DAG size of output: 224 [2018-11-23 02:08:22,657 WARN L180 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 305 DAG size of output: 223 [2018-11-23 02:08:26,137 WARN L180 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 325 DAG size of output: 245 [2018-11-23 02:08:27,542 WARN L180 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2018-11-23 02:08:29,805 WARN L180 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 221 DAG size of output: 212 [2018-11-23 02:08:31,842 WARN L180 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 193 [2018-11-23 02:08:35,664 WARN L180 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 303 DAG size of output: 218 [2018-11-23 02:08:37,414 WARN L180 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2018-11-23 02:08:39,354 WARN L180 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 224 DAG size of output: 215 [2018-11-23 02:08:42,324 WARN L180 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 199 [2018-11-23 02:08:44,291 WARN L180 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2018-11-23 02:08:44,924 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-11-23 02:08:47,251 WARN L180 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 245 DAG size of output: 226 [2018-11-23 02:08:49,077 WARN L180 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 202 DAG size of output: 187 [2018-11-23 02:08:51,286 WARN L180 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 265 DAG size of output: 237 [2018-11-23 02:08:55,931 WARN L180 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 315 DAG size of output: 237 [2018-11-23 02:08:58,653 WARN L180 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 312 DAG size of output: 208 [2018-11-23 02:08:59,399 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2018-11-23 02:09:00,047 WARN L180 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-11-23 02:09:00,599 WARN L180 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-11-23 02:09:05,657 WARN L180 SmtUtils]: Spent 2.73 s on a formula simplification. DAG size of input: 322 DAG size of output: 243 [2018-11-23 02:09:06,343 WARN L180 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2018-11-23 02:09:10,289 WARN L180 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 325 DAG size of output: 246 [2018-11-23 02:09:10,733 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-11-23 02:09:12,672 WARN L180 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 242 DAG size of output: 223 [2018-11-23 02:09:16,571 WARN L180 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 328 DAG size of output: 249 [2018-11-23 02:09:17,932 WARN L180 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-11-23 02:09:20,255 WARN L180 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 230 DAG size of output: 211 [2018-11-23 02:09:22,780 WARN L180 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 224 DAG size of output: 205 [2018-11-23 02:09:22,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:09:22,974 INFO L93 Difference]: Finished difference Result 441 states and 585 transitions. [2018-11-23 02:09:22,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-11-23 02:09:22,974 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 34 [2018-11-23 02:09:22,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:09:22,978 INFO L225 Difference]: With dead ends: 441 [2018-11-23 02:09:22,978 INFO L226 Difference]: Without dead ends: 430 [2018-11-23 02:09:22,987 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23821 ImplicationChecksByTransitivity, 297.6s TimeCoverageRelationStatistics Valid=7532, Invalid=61374, Unknown=0, NotChecked=0, Total=68906 [2018-11-23 02:09:22,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-11-23 02:09:23,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 287. [2018-11-23 02:09:23,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-11-23 02:09:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 396 transitions. [2018-11-23 02:09:23,053 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 396 transitions. Word has length 34 [2018-11-23 02:09:23,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:09:23,053 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 396 transitions. [2018-11-23 02:09:23,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-11-23 02:09:23,053 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 396 transitions. [2018-11-23 02:09:23,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-23 02:09:23,054 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:09:23,054 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:09:23,055 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:09:23,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:09:23,055 INFO L82 PathProgramCache]: Analyzing trace with hash -226885002, now seen corresponding path program 1 times [2018-11-23 02:09:23,055 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 02:09:23,055 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 02:09:23,068 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:09:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:09:23,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:09:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:09:23,755 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 02:09:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 7 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:09:27,233 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:09:27,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2018-11-23 02:09:27,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-11-23 02:09:27,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-11-23 02:09:27,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=2533, Unknown=0, NotChecked=0, Total=2862 [2018-11-23 02:09:27,234 INFO L87 Difference]: Start difference. First operand 287 states and 396 transitions. Second operand 54 states. [2018-11-23 02:09:27,940 WARN L180 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 159 [2018-11-23 02:09:28,358 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-11-23 02:09:29,087 WARN L180 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 147 [2018-11-23 02:09:29,824 WARN L180 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-11-23 02:09:30,311 WARN L180 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2018-11-23 02:09:31,208 WARN L180 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 137 [2018-11-23 02:09:32,033 WARN L180 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2018-11-23 02:09:32,726 WARN L180 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-11-23 02:09:33,159 WARN L180 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-11-23 02:09:34,355 WARN L180 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-11-23 02:09:35,290 WARN L180 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2018-11-23 02:09:35,817 WARN L180 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 113 [2018-11-23 02:09:36,538 WARN L180 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 135 [2018-11-23 02:09:37,762 WARN L180 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2018-11-23 02:09:38,580 WARN L180 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-11-23 02:09:39,233 WARN L180 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-11-23 02:09:41,620 WARN L180 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 173 DAG size of output: 172 [2018-11-23 02:09:41,978 WARN L180 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2018-11-23 02:09:43,013 WARN L180 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-11-23 02:09:43,299 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2018-11-23 02:09:43,819 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 100 [2018-11-23 02:09:44,788 WARN L180 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 148 [2018-11-23 02:09:47,216 WARN L180 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2018-11-23 02:09:47,523 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-11-23 02:09:48,203 WARN L180 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-11-23 02:09:48,987 WARN L180 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2018-11-23 02:09:49,628 WARN L180 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2018-11-23 02:09:53,302 WARN L180 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2018-11-23 02:09:53,686 WARN L180 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-11-23 02:09:54,036 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-11-23 02:09:54,328 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-11-23 02:09:55,451 WARN L180 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-11-23 02:09:55,916 WARN L180 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-11-23 02:09:57,781 WARN L180 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 153 [2018-11-23 02:09:58,134 WARN L180 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-11-23 02:09:58,928 WARN L180 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2018-11-23 02:09:59,836 WARN L180 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-11-23 02:10:00,541 WARN L180 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-11-23 02:10:01,238 WARN L180 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2018-11-23 02:10:04,206 WARN L180 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2018-11-23 02:10:04,622 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-11-23 02:10:04,983 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-11-23 02:10:05,275 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-11-23 02:10:05,965 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2018-11-23 02:10:09,108 WARN L180 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2018-11-23 02:10:09,759 WARN L180 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-11-23 02:10:10,223 WARN L180 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2018-11-23 02:10:10,706 WARN L180 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2018-11-23 02:10:11,056 WARN L180 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-11-23 02:10:12,927 WARN L180 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 182 DAG size of output: 132 [2018-11-23 02:10:14,493 WARN L180 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 174 DAG size of output: 156 [2018-11-23 02:10:17,303 WARN L180 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 184 DAG size of output: 179 [2018-11-23 02:10:18,506 WARN L180 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 154 [2018-11-23 02:10:18,777 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-11-23 02:10:19,458 WARN L180 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-11-23 02:10:20,494 WARN L180 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 149 [2018-11-23 02:10:21,621 WARN L180 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 144 [2018-11-23 02:10:22,378 WARN L180 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2018-11-23 02:10:22,838 WARN L180 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-11-23 02:10:23,296 WARN L180 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-11-23 02:10:23,817 WARN L180 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-11-23 02:10:24,916 WARN L180 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-11-23 02:10:25,604 WARN L180 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-11-23 02:10:26,094 WARN L180 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-11-23 02:10:27,603 WARN L180 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 134 [2018-11-23 02:10:28,898 WARN L180 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 119 [2018-11-23 02:10:30,182 WARN L180 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 133 [2018-11-23 02:10:30,639 WARN L180 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2018-11-23 02:10:31,491 WARN L180 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2018-11-23 02:10:32,363 WARN L180 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 139 [2018-11-23 02:10:33,021 WARN L180 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 88 [2018-11-23 02:10:33,814 WARN L180 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 64 [2018-11-23 02:10:35,080 WARN L180 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 118 [2018-11-23 02:10:36,221 WARN L180 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 118 [2018-11-23 02:10:37,117 WARN L180 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2018-11-23 02:10:37,480 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-11-23 02:10:38,396 WARN L180 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-11-23 02:10:39,341 WARN L180 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 121 [2018-11-23 02:10:40,024 WARN L180 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2018-11-23 02:10:40,890 WARN L180 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 122 [2018-11-23 02:10:42,203 WARN L180 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 130 [2018-11-23 02:10:42,977 WARN L180 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 131 [2018-11-23 02:10:44,259 WARN L180 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 141 [2018-11-23 02:10:44,786 WARN L180 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 103 [2018-11-23 02:10:45,312 WARN L180 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 112 [2018-11-23 02:10:46,183 WARN L180 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 119 [2018-11-23 02:10:46,548 WARN L180 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 100 [2018-11-23 02:10:46,927 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 109 [2018-11-23 02:10:47,514 WARN L180 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2018-11-23 02:10:47,813 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 88 [2018-11-23 02:10:48,129 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 97 [2018-11-23 02:10:48,533 WARN L180 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2018-11-23 02:10:49,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:10:49,444 INFO L93 Difference]: Finished difference Result 608 states and 856 transitions. [2018-11-23 02:10:49,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-11-23 02:10:49,444 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 34 [2018-11-23 02:10:49,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:10:49,446 INFO L225 Difference]: With dead ends: 608 [2018-11-23 02:10:49,446 INFO L226 Difference]: Without dead ends: 568 [2018-11-23 02:10:49,448 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11941 ImplicationChecksByTransitivity, 81.7s TimeCoverageRelationStatistics Valid=4953, Invalid=35649, Unknown=0, NotChecked=0, Total=40602 [2018-11-23 02:10:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2018-11-23 02:10:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 489. [2018-11-23 02:10:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2018-11-23 02:10:49,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 687 transitions. [2018-11-23 02:10:49,553 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 687 transitions. Word has length 34 [2018-11-23 02:10:49,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:10:49,554 INFO L480 AbstractCegarLoop]: Abstraction has 489 states and 687 transitions. [2018-11-23 02:10:49,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-11-23 02:10:49,554 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 687 transitions. [2018-11-23 02:10:49,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-23 02:10:49,556 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:10:49,556 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:10:49,556 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:10:49,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:10:49,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1706268918, now seen corresponding path program 2 times [2018-11-23 02:10:49,557 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 02:10:49,557 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 02:10:49,572 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-23 02:10:49,598 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 02:10:49,598 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:10:49,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:10:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:10:50,291 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 02:10:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:10:54,030 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:10:54,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2018-11-23 02:10:54,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-11-23 02:10:54,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-11-23 02:10:54,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=2485, Unknown=0, NotChecked=0, Total=2862 [2018-11-23 02:10:54,031 INFO L87 Difference]: Start difference. First operand 489 states and 687 transitions. Second operand 54 states. [2018-11-23 02:10:55,900 WARN L180 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 182 DAG size of output: 150 [2018-11-23 02:10:56,740 WARN L180 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-11-23 02:10:57,629 WARN L180 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 138 [2018-11-23 02:10:59,544 WARN L180 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 192 DAG size of output: 156 [2018-11-23 02:11:01,829 WARN L180 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2018-11-23 02:11:02,230 WARN L180 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-11-23 02:11:02,536 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-11-23 02:11:03,706 WARN L180 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 157 [2018-11-23 02:11:04,036 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-11-23 02:11:04,825 WARN L180 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 129 [2018-11-23 02:11:05,757 WARN L180 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 124 [2018-11-23 02:11:07,806 WARN L180 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 202 DAG size of output: 162 [2018-11-23 02:11:08,138 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-11-23 02:11:08,463 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2018-11-23 02:11:10,715 WARN L180 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 194 DAG size of output: 186 [2018-11-23 02:11:11,197 WARN L180 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-11-23 02:11:11,548 WARN L180 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2018-11-23 02:11:13,226 WARN L180 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 169 [2018-11-23 02:11:13,576 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2018-11-23 02:11:14,522 WARN L180 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 134 [2018-11-23 02:11:15,544 WARN L180 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 126 [2018-11-23 02:11:16,260 WARN L180 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 100 [2018-11-23 02:11:17,219 WARN L180 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 121 [2018-11-23 02:11:19,552 WARN L180 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 212 DAG size of output: 168 [2018-11-23 02:11:19,934 WARN L180 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-11-23 02:11:20,301 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2018-11-23 02:11:20,599 WARN L180 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2018-11-23 02:11:23,065 WARN L180 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 210 DAG size of output: 198 [2018-11-23 02:11:23,616 WARN L180 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2018-11-23 02:11:24,036 WARN L180 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-11-23 02:11:24,325 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-11-23 02:11:26,180 WARN L180 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 204 DAG size of output: 180 [2018-11-23 02:11:26,558 WARN L180 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-11-23 02:11:27,729 WARN L180 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 139 [2018-11-23 02:11:27,998 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-11-23 02:11:28,915 WARN L180 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 131 [2018-11-23 02:11:29,923 WARN L180 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 123 [2018-11-23 02:11:30,846 WARN L180 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 118 [2018-11-23 02:11:33,374 WARN L180 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 223 DAG size of output: 175 [2018-11-23 02:11:33,778 WARN L180 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2018-11-23 02:11:34,193 WARN L180 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-11-23 02:11:34,485 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2018-11-23 02:11:37,401 WARN L180 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2018-11-23 02:11:38,009 WARN L180 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-11-23 02:11:38,459 WARN L180 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2018-11-23 02:11:38,779 WARN L180 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-11-23 02:11:41,118 WARN L180 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 226 DAG size of output: 150 [2018-11-23 02:11:42,839 WARN L180 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 214 DAG size of output: 186 [2018-11-23 02:11:45,206 WARN L180 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 222 DAG size of output: 174 [2018-11-23 02:11:46,440 WARN L180 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 144 [2018-11-23 02:11:47,456 WARN L180 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 136 [2018-11-23 02:11:48,382 WARN L180 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 128 [2018-11-23 02:11:49,368 WARN L180 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 120 [2018-11-23 02:11:50,105 WARN L180 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 115 [2018-11-23 02:11:50,830 WARN L180 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-11-23 02:11:51,699 WARN L180 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-11-23 02:11:53,715 WARN L180 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 225 DAG size of output: 149 [2018-11-23 02:11:54,948 WARN L180 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 128 [2018-11-23 02:11:55,587 WARN L180 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 105 [2018-11-23 02:11:56,248 WARN L180 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 105 [2018-11-23 02:11:56,732 WARN L180 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2018-11-23 02:11:58,064 WARN L180 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 41 [2018-11-23 02:11:59,178 WARN L180 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 117 [2018-11-23 02:11:59,904 WARN L180 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 112 [2018-11-23 02:12:00,491 WARN L180 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 30 [2018-11-23 02:12:01,101 WARN L180 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 43 [2018-11-23 02:12:02,121 WARN L180 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 120 [2018-11-23 02:12:03,020 WARN L180 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 119 [2018-11-23 02:12:04,026 WARN L180 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 124 [2018-11-23 02:12:04,823 WARN L180 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 128 [2018-11-23 02:12:05,426 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 115 [2018-11-23 02:12:06,555 WARN L180 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 129 [2018-11-23 02:12:07,325 WARN L180 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 101 [2018-11-23 02:12:07,925 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 47 [2018-11-23 02:12:08,772 WARN L180 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 120 [2018-11-23 02:12:09,295 WARN L180 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 58 [2018-11-23 02:12:09,900 WARN L180 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 120 [2018-11-23 02:12:10,515 WARN L180 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 57 [2018-11-23 02:12:10,937 WARN L180 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 37 [2018-11-23 02:12:11,646 WARN L180 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 120 [2018-11-23 02:12:12,157 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 59 [2018-11-23 02:12:12,713 WARN L180 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 61 [2018-11-23 02:12:13,092 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 51 [2018-11-23 02:12:14,143 WARN L180 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 124 [2018-11-23 02:12:14,970 WARN L180 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 109 [2018-11-23 02:12:15,758 WARN L180 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 108 [2018-11-23 02:12:16,709 WARN L180 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 111 [2018-11-23 02:12:17,661 WARN L180 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 111 [2018-11-23 02:12:18,417 WARN L180 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 102 [2018-11-23 02:12:18,918 WARN L180 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 96 [2018-11-23 02:12:19,563 WARN L180 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 101 [2018-11-23 02:12:20,344 WARN L180 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 105 [2018-11-23 02:12:21,522 WARN L180 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 127 [2018-11-23 02:12:22,298 WARN L180 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 107 [2018-11-23 02:12:22,822 WARN L180 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 59 [2018-11-23 02:12:23,449 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 52 [2018-11-23 02:12:24,306 WARN L180 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 127 [2018-11-23 02:12:25,362 WARN L180 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 113 [2018-11-23 02:12:25,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:12:25,395 INFO L93 Difference]: Finished difference Result 811 states and 1139 transitions. [2018-11-23 02:12:25,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-11-23 02:12:25,396 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 34 [2018-11-23 02:12:25,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:12:25,399 INFO L225 Difference]: With dead ends: 811 [2018-11-23 02:12:25,399 INFO L226 Difference]: Without dead ends: 757 [2018-11-23 02:12:25,400 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12076 ImplicationChecksByTransitivity, 91.1s TimeCoverageRelationStatistics Valid=5879, Invalid=35127, Unknown=0, NotChecked=0, Total=41006 [2018-11-23 02:12:25,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2018-11-23 02:12:25,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 660. [2018-11-23 02:12:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2018-11-23 02:12:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 928 transitions. [2018-11-23 02:12:25,522 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 928 transitions. Word has length 34 [2018-11-23 02:12:25,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:12:25,522 INFO L480 AbstractCegarLoop]: Abstraction has 660 states and 928 transitions. [2018-11-23 02:12:25,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-11-23 02:12:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 928 transitions. [2018-11-23 02:12:25,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-23 02:12:25,523 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:12:25,523 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:12:25,524 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:12:25,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:12:25,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1272006578, now seen corresponding path program 3 times [2018-11-23 02:12:25,524 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 02:12:25,524 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5341eee8-e585-4037-bdc5-e9aef100af1e/bin-2019/uautomizer/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 02:12:25,536 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-23 02:12:25,624 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-23 02:12:25,624 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:12:25,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:12:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:12:27,252 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 02:12:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:12:31,917 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:12:31,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 56 [2018-11-23 02:12:31,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-11-23 02:12:31,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-11-23 02:12:31,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=2674, Unknown=0, NotChecked=0, Total=3080 [2018-11-23 02:12:31,918 INFO L87 Difference]: Start difference. First operand 660 states and 928 transitions. Second operand 56 states. [2018-11-23 02:12:32,371 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 98 [2018-11-23 02:12:33,911 WARN L180 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 238 DAG size of output: 217 [2018-11-23 02:12:34,973 WARN L180 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 199 [2018-11-23 02:12:35,365 WARN L180 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 108 [2018-11-23 02:12:36,116 WARN L180 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 159 [2018-11-23 02:12:38,659 WARN L180 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 256 DAG size of output: 251 [2018-11-23 02:12:39,449 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2018-11-23 02:12:40,110 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2018-11-23 02:12:40,454 WARN L180 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2018-11-23 02:12:41,354 WARN L180 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 194 [2018-11-23 02:12:43,058 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 217 DAG size of output: 196 [2018-11-23 02:12:45,501 WARN L180 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 269 DAG size of output: 248 [2018-11-23 02:12:47,079 WARN L180 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 194 [2018-11-23 02:12:48,334 WARN L180 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 195 [2018-11-23 02:12:49,073 WARN L180 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 150 [2018-11-23 02:12:50,634 WARN L180 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 288 DAG size of output: 210 [2018-11-23 02:12:51,216 WARN L180 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2018-11-23 02:12:51,829 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2018-11-23 02:12:53,335 WARN L180 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 159 [2018-11-23 02:12:55,726 WARN L180 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 270 DAG size of output: 207 [2018-11-23 02:12:56,896 WARN L180 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2018-11-23 02:12:57,726 WARN L180 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2018-11-23 02:12:59,564 WARN L180 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 167 [2018-11-23 02:13:01,317 WARN L180 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 310 DAG size of output: 195 [2018-11-23 02:13:02,905 WARN L180 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 248 DAG size of output: 227 [2018-11-23 02:13:05,646 WARN L180 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 283 DAG size of output: 220 [2018-11-23 02:13:06,689 WARN L180 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 191 [2018-11-23 02:13:08,515 WARN L180 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 229 DAG size of output: 213 [2018-11-23 02:13:08,874 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2018-11-23 02:13:10,403 WARN L180 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 211 [2018-11-23 02:13:11,942 WARN L180 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 184 [2018-11-23 02:13:12,953 WARN L180 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 177 [2018-11-23 02:13:14,095 WARN L180 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 178 [2018-11-23 02:13:15,018 WARN L180 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 182 [2018-11-23 02:13:15,758 WARN L180 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 147 [2018-11-23 02:13:17,100 WARN L180 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 185 [2018-11-23 02:13:17,739 WARN L180 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-11-23 02:13:19,679 WARN L180 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 244 DAG size of output: 212 [2018-11-23 02:13:20,148 WARN L180 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2018-11-23 02:13:20,707 WARN L180 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-11-23 02:13:21,949 WARN L180 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 149 [2018-11-23 02:13:23,185 WARN L180 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 149 [2018-11-23 02:13:24,712 WARN L180 SmtUtils]: Spent 939.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2018-11-23 02:13:27,065 WARN L180 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 258 DAG size of output: 226 [2018-11-23 02:13:28,495 WARN L180 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 203 [2018-11-23 02:13:29,075 WARN L180 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-11-23 02:13:31,477 WARN L180 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 277 DAG size of output: 213 [2018-11-23 02:13:33,096 WARN L180 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 169 [2018-11-23 02:13:34,942 WARN L180 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 307 DAG size of output: 192 [2018-11-23 02:13:36,627 WARN L180 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 160 [2018-11-23 02:13:38,355 WARN L180 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 233 DAG size of output: 217 [2018-11-23 02:13:40,623 WARN L180 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 269 DAG size of output: 205 [2018-11-23 02:13:42,875 WARN L180 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 255 DAG size of output: 223 [2018-11-23 02:13:44,638 WARN L180 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 230 DAG size of output: 214 [2018-11-23 02:13:46,721 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 204 DAG size of output: 188 [2018-11-23 02:13:47,780 WARN L180 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 182 [2018-11-23 02:13:48,961 WARN L180 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 172 [2018-11-23 02:13:50,222 WARN L180 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 175 [2018-11-23 02:13:50,770 WARN L180 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2018-11-23 02:13:51,974 WARN L180 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 146 [2018-11-23 02:13:53,313 WARN L180 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 194 [2018-11-23 02:13:53,991 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 143 [2018-11-23 02:13:55,226 WARN L180 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 181 [2018-11-23 02:13:56,078 WARN L180 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2018-11-23 02:13:58,940 WARN L180 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 236 DAG size of output: 204 [2018-11-23 02:14:00,547 WARN L180 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 148 [2018-11-23 02:14:01,859 WARN L180 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 147 [2018-11-23 02:14:03,741 WARN L180 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 191 [2018-11-23 02:14:06,345 WARN L180 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 240 DAG size of output: 208 [2018-11-23 02:14:07,700 WARN L180 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2018-11-23 02:14:10,579 WARN L180 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 263 DAG size of output: 199 [2018-11-23 02:14:12,790 WARN L180 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 239 DAG size of output: 207 [2018-11-23 02:14:13,311 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2018-11-23 02:14:14,375 WARN L180 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 150 [2018-11-23 02:14:15,403 WARN L180 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 144 [2018-11-23 02:14:16,996 WARN L180 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 120 [2018-11-23 02:14:19,048 WARN L180 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 229 DAG size of output: 197 [2018-11-23 02:14:21,337 WARN L180 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 242 DAG size of output: 210 [2018-11-23 02:14:22,664 WARN L180 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 194 [2018-11-23 02:14:25,103 WARN L180 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 218 DAG size of output: 202 [2018-11-23 02:14:26,420 WARN L180 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 180 [2018-11-23 02:14:27,601 WARN L180 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 185 [2018-11-23 02:14:28,368 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-11-23 02:14:31,759 WARN L180 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 286 DAG size of output: 225 [2018-11-23 02:14:33,124 WARN L180 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 140 [2018-11-23 02:14:34,313 WARN L180 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 118 [2018-11-23 02:14:35,016 WARN L180 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2018-11-23 02:14:35,692 WARN L180 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-11-23 02:14:39,363 WARN L180 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 291 DAG size of output: 230 [2018-11-23 02:14:39,876 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-11-23 02:14:43,649 WARN L180 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 202 DAG size of output: 186 [2018-11-23 02:14:46,676 WARN L180 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 271 DAG size of output: 207 [2018-11-23 02:14:50,213 WARN L180 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 294 DAG size of output: 233 [2018-11-23 02:14:51,599 WARN L180 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 115 [2018-11-23 02:14:54,443 WARN L180 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 191 [2018-11-23 02:14:54,862 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-11-23 02:14:57,046 WARN L180 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 258 DAG size of output: 194 [2018-11-23 02:14:58,142 WARN L180 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 149 [2018-11-23 02:15:01,425 WARN L180 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 270 DAG size of output: 206 [2018-11-23 02:15:04,723 WARN L180 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 275 DAG size of output: 211 [2018-11-23 02:15:06,026 WARN L180 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 156 [2018-11-23 02:15:08,382 WARN L180 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 266 DAG size of output: 202 [2018-11-23 02:15:11,089 WARN L180 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 270 DAG size of output: 206 [2018-11-23 02:15:12,600 WARN L180 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 96 [2018-11-23 02:15:15,871 WARN L180 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 272 DAG size of output: 208 [2018-11-23 02:15:17,400 WARN L180 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 158 [2018-11-23 02:15:18,727 WARN L180 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 178 [2018-11-23 02:15:20,261 WARN L180 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 167 [2018-11-23 02:15:23,915 WARN L180 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 295 DAG size of output: 233 [2018-11-23 02:15:25,088 WARN L180 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 156 [2018-11-23 02:15:27,636 WARN L180 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 228 DAG size of output: 196 [2018-11-23 02:15:28,156 WARN L180 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2018-11-23 02:15:28,856 WARN L180 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 159 [2018-11-23 02:15:32,319 WARN L180 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 234 DAG size of output: 220 [2018-11-23 02:15:35,225 WARN L180 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 215 DAG size of output: 211 [2018-11-23 02:15:38,455 WARN L180 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 295 DAG size of output: 220 [2018-11-23 02:15:39,722 WARN L180 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 156 [2018-11-23 02:15:41,062 WARN L180 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 52 [2018-11-23 02:15:42,958 WARN L180 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 148 [2018-11-23 02:15:44,336 WARN L180 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 137 [2018-11-23 02:15:47,564 WARN L180 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 308 DAG size of output: 223 [2018-11-23 02:15:50,284 WARN L180 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2018-11-23 02:15:51,946 WARN L180 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 163 [2018-11-23 02:15:54,588 WARN L180 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 231 DAG size of output: 199 [2018-11-23 02:15:55,774 WARN L180 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 169 [2018-11-23 02:15:58,992 WARN L180 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 278 DAG size of output: 213 [2018-11-23 02:16:02,746 WARN L180 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 298 DAG size of output: 236 [2018-11-23 02:16:04,435 WARN L180 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 176 [2018-11-23 02:16:07,943 WARN L180 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 261 DAG size of output: 197 [2018-11-23 02:16:11,568 WARN L180 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 297 DAG size of output: 222 [2018-11-23 02:16:15,812 WARN L180 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 279 DAG size of output: 215 [2018-11-23 02:16:16,285 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-23 02:16:16,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-11-23 02:16:16,286 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 [2018-11-23 02:16:16,289 INFO L168 Benchmark]: Toolchain (without parser) took 734199.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 949.2 MB in the beginning and 1.0 GB in the end (delta: -94.0 MB). Peak memory consumption was 58.0 MB. Max. memory is 11.5 GB. [2018-11-23 02:16:16,289 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:16:16,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.82 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:16:16,290 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.11 ms. Allocated memory is still 1.0 GB. Free memory was 938.5 MB in the beginning and 933.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 02:16:16,290 INFO L168 Benchmark]: Boogie Preprocessor took 14.92 ms. Allocated memory is still 1.0 GB. Free memory is still 933.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:16:16,290 INFO L168 Benchmark]: RCFGBuilder took 189.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -201.6 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2018-11-23 02:16:16,290 INFO L168 Benchmark]: TraceAbstraction took 733806.50 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -4.2 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 91.5 MB). Peak memory consumption was 87.3 MB. Max. memory is 11.5 GB. [2018-11-23 02:16:16,291 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 172.82 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.5 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 13.11 ms. Allocated memory is still 1.0 GB. Free memory was 938.5 MB in the beginning and 933.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.92 ms. Allocated memory is still 1.0 GB. Free memory is still 933.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 189.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -201.6 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 733806.50 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -4.2 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 91.5 MB). Peak memory consumption was 87.3 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...