./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1251_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/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 df3954142d6b55c98b13b60b9fbaf053d4d402ff ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/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 df3954142d6b55c98b13b60b9fbaf053d4d402ff ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 09:10:49,727 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:10:49,728 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:10:49,736 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:10:49,736 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:10:49,737 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:10:49,738 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:10:49,739 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:10:49,740 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:10:49,741 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:10:49,741 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:10:49,742 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:10:49,742 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:10:49,743 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:10:49,744 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:10:49,745 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:10:49,745 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:10:49,747 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:10:49,748 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:10:49,749 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:10:49,750 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:10:49,751 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:10:49,753 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:10:49,753 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:10:49,753 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:10:49,754 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:10:49,754 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:10:49,755 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:10:49,756 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:10:49,757 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:10:49,757 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:10:49,757 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:10:49,758 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:10:49,758 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:10:49,758 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:10:49,759 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:10:49,759 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 09:10:49,769 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:10:49,770 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:10:49,770 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:10:49,771 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 09:10:49,771 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:10:49,771 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:10:49,771 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:10:49,772 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:10:49,772 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:10:49,772 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:10:49,772 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:10:49,772 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:10:49,772 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:10:49,772 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:10:49,773 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:10:49,773 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:10:49,773 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:10:49,773 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:10:49,773 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:10:49,773 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:10:49,774 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:10:49,774 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:10:49,774 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:10:49,774 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:10:49,774 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:10:49,774 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:10:49,775 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:10:49,775 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 09:10:49,775 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:10:49,775 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 09:10:49,775 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_08b8e314-a546-4a2c-9570-33d99a9e301e/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 -> df3954142d6b55c98b13b60b9fbaf053d4d402ff [2018-11-18 09:10:49,802 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:10:49,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:10:49,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:10:49,817 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:10:49,818 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:10:49,818 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1251_true-unreach-call.c [2018-11-18 09:10:49,864 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/data/943e68a1f/16c7e971883f47308f3dabe3bf790057/FLAG23fe2ea39 [2018-11-18 09:10:50,276 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:10:50,277 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/sv-benchmarks/c/float-newlib/float_req_bl_1251_true-unreach-call.c [2018-11-18 09:10:50,283 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/data/943e68a1f/16c7e971883f47308f3dabe3bf790057/FLAG23fe2ea39 [2018-11-18 09:10:50,295 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/data/943e68a1f/16c7e971883f47308f3dabe3bf790057 [2018-11-18 09:10:50,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:10:50,298 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 09:10:50,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:10:50,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:10:50,301 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:10:50,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:10:50" (1/1) ... [2018-11-18 09:10:50,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e791d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:50, skipping insertion in model container [2018-11-18 09:10:50,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:10:50" (1/1) ... [2018-11-18 09:10:50,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:10:50,326 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:10:50,442 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:10:50,444 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:10:50,465 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:10:50,483 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:10:50,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:50 WrapperNode [2018-11-18 09:10:50,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:10:50,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:10:50,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:10:50,484 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:10:50,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:50" (1/1) ... [2018-11-18 09:10:50,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:50" (1/1) ... [2018-11-18 09:10:50,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:50" (1/1) ... [2018-11-18 09:10:50,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:50" (1/1) ... [2018-11-18 09:10:50,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:50" (1/1) ... [2018-11-18 09:10:50,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:50" (1/1) ... [2018-11-18 09:10:50,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:50" (1/1) ... [2018-11-18 09:10:50,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:10:50,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:10:50,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:10:50,568 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:10:50,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/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 [2018-11-18 09:10:50,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:10:50,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:10:50,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-18 09:10:50,609 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-18 09:10:50,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 09:10:50,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:10:50,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 09:10:50,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-18 09:10:50,610 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-18 09:10:50,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 09:10:50,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 09:10:50,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 09:10:50,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 09:10:50,611 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-18 09:10:50,611 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 09:10:50,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:10:50,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:10:50,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:10:50,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 09:10:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 09:10:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-18 09:10:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 09:10:50,842 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:10:50,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:10:50 BoogieIcfgContainer [2018-11-18 09:10:50,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:10:50,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:10:50,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:10:50,845 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:10:50,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:10:50" (1/3) ... [2018-11-18 09:10:50,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ee9963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:10:50, skipping insertion in model container [2018-11-18 09:10:50,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:50" (2/3) ... [2018-11-18 09:10:50,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ee9963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:10:50, skipping insertion in model container [2018-11-18 09:10:50,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:10:50" (3/3) ... [2018-11-18 09:10:50,848 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251_true-unreach-call.c [2018-11-18 09:10:50,853 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:10:50,858 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-18 09:10:50,871 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-18 09:10:50,897 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:10:50,898 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:10:50,898 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:10:50,898 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:10:50,898 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:10:50,898 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:10:50,898 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:10:50,898 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:10:50,898 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:10:50,911 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2018-11-18 09:10:50,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 09:10:50,916 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:50,917 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:50,919 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:50,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:50,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1686752292, now seen corresponding path program 1 times [2018-11-18 09:10:50,925 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:10:50,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:10:50,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:10:50,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:50,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:10:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:51,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 09:10:51,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:10:51,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:10:51,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 09:10:51,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 09:10:51,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:10:51,048 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2018-11-18 09:10:51,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:51,069 INFO L93 Difference]: Finished difference Result 109 states and 150 transitions. [2018-11-18 09:10:51,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:10:51,070 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-11-18 09:10:51,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:51,076 INFO L225 Difference]: With dead ends: 109 [2018-11-18 09:10:51,076 INFO L226 Difference]: Without dead ends: 61 [2018-11-18 09:10:51,078 INFO L604 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 [2018-11-18 09:10:51,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-18 09:10:51,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-11-18 09:10:51,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-18 09:10:51,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2018-11-18 09:10:51,110 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 36 [2018-11-18 09:10:51,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:51,112 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2018-11-18 09:10:51,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 09:10:51,112 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2018-11-18 09:10:51,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-18 09:10:51,114 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:51,114 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:51,114 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:51,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:51,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1583628166, now seen corresponding path program 1 times [2018-11-18 09:10:51,115 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:10:51,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:10:51,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:10:51,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:51,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:10:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:51,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 09:10:51,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:10:51,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:10:51,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:10:51,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:10:51,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:10:51,196 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand 4 states. [2018-11-18 09:10:51,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:51,252 INFO L93 Difference]: Finished difference Result 112 states and 147 transitions. [2018-11-18 09:10:51,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:10:51,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-11-18 09:10:51,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:51,255 INFO L225 Difference]: With dead ends: 112 [2018-11-18 09:10:51,255 INFO L226 Difference]: Without dead ends: 70 [2018-11-18 09:10:51,256 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:10:51,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-18 09:10:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2018-11-18 09:10:51,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-18 09:10:51,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2018-11-18 09:10:51,264 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 37 [2018-11-18 09:10:51,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:51,264 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2018-11-18 09:10:51,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:10:51,264 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2018-11-18 09:10:51,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-18 09:10:51,265 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:51,266 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:51,266 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:51,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:51,266 INFO L82 PathProgramCache]: Analyzing trace with hash 457041463, now seen corresponding path program 1 times [2018-11-18 09:10:51,266 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:10:51,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:10:51,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:10:51,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:51,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:10:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-18 09:10:51,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:10:51,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:10:51,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:10:51,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:10:51,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:10:51,315 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand 4 states. [2018-11-18 09:10:51,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:51,333 INFO L93 Difference]: Finished difference Result 89 states and 114 transitions. [2018-11-18 09:10:51,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:10:51,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-11-18 09:10:51,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:51,336 INFO L225 Difference]: With dead ends: 89 [2018-11-18 09:10:51,336 INFO L226 Difference]: Without dead ends: 67 [2018-11-18 09:10:51,336 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:10:51,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-18 09:10:51,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-11-18 09:10:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-18 09:10:51,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2018-11-18 09:10:51,341 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 42 [2018-11-18 09:10:51,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:51,342 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2018-11-18 09:10:51,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:10:51,342 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2018-11-18 09:10:51,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 09:10:51,342 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:51,342 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:51,343 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:51,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:51,343 INFO L82 PathProgramCache]: Analyzing trace with hash -385972692, now seen corresponding path program 1 times [2018-11-18 09:10:51,343 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:10:51,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:10:51,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:10:51,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:51,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:10:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-18 09:10:51,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:10:51,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:10:51,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:10:51,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:10:51,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:10:51,398 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand 4 states. [2018-11-18 09:10:51,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:51,434 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2018-11-18 09:10:51,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:10:51,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-11-18 09:10:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:51,435 INFO L225 Difference]: With dead ends: 93 [2018-11-18 09:10:51,436 INFO L226 Difference]: Without dead ends: 71 [2018-11-18 09:10:51,436 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:10:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-18 09:10:51,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2018-11-18 09:10:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-18 09:10:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2018-11-18 09:10:51,442 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 45 [2018-11-18 09:10:51,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:51,443 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2018-11-18 09:10:51,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:10:51,443 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2018-11-18 09:10:51,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 09:10:51,444 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:51,444 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:51,444 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:51,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:51,444 INFO L82 PathProgramCache]: Analyzing trace with hash -896506869, now seen corresponding path program 1 times [2018-11-18 09:10:51,444 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:10:51,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:10:51,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:10:51,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:51,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:10:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:51,481 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-18 09:10:51,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:10:51,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:10:51,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:10:51,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:10:51,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:10:51,482 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand 3 states. [2018-11-18 09:10:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:51,506 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2018-11-18 09:10:51,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:10:51,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-11-18 09:10:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:51,507 INFO L225 Difference]: With dead ends: 70 [2018-11-18 09:10:51,508 INFO L226 Difference]: Without dead ends: 68 [2018-11-18 09:10:51,508 INFO L604 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 [2018-11-18 09:10:51,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-18 09:10:51,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-11-18 09:10:51,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-18 09:10:51,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2018-11-18 09:10:51,515 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 45 [2018-11-18 09:10:51,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:51,516 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2018-11-18 09:10:51,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:10:51,516 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2018-11-18 09:10:51,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-18 09:10:51,517 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:51,517 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:51,517 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:51,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:51,517 INFO L82 PathProgramCache]: Analyzing trace with hash -966115741, now seen corresponding path program 1 times [2018-11-18 09:10:51,518 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:10:51,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:10:51,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:10:51,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:51,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:10:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:10:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:10:51,567 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 09:10:51,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:10:51 BoogieIcfgContainer [2018-11-18 09:10:51,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 09:10:51,592 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:10:51,592 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:10:51,592 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:10:51,592 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:10:50" (3/4) ... [2018-11-18 09:10:51,595 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 09:10:51,595 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:10:51,595 INFO L168 Benchmark]: Toolchain (without parser) took 1298.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 959.1 MB in the beginning and 1.0 GB in the end (delta: -72.5 MB). Peak memory consumption was 73.2 MB. Max. memory is 11.5 GB. [2018-11-18 09:10:51,596 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:10:51,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.12 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 945.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:10:51,597 INFO L168 Benchmark]: Boogie Preprocessor took 84.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:10:51,598 INFO L168 Benchmark]: RCFGBuilder took 274.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 11.5 GB. [2018-11-18 09:10:51,598 INFO L168 Benchmark]: TraceAbstraction took 748.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 83.1 MB). Peak memory consumption was 83.1 MB. Max. memory is 11.5 GB. [2018-11-18 09:10:51,598 INFO L168 Benchmark]: Witness Printer took 3.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:10:51,601 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 185.12 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 945.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 84.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 274.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 748.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 83.1 MB). Peak memory consumption was 83.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 74]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73. Possible FailurePath: [L64] float x = __VERIFIER_nondet_float(); [L65] float y = __VERIFIER_nondet_float(); [L67] CALL, EXPR isnan_float(x) VAL [\old(x)=4286578692] [L55] RET return x != x; VAL [\old(x)=4286578692, \result=1, x=4286578692] [L67] EXPR isnan_float(x) VAL [isnan_float(x)=1, x=4286578692, y=4286578691] [L67] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, x=4286578692, y=4286578691] [L67] CALL, EXPR isnan_float(y) VAL [\old(x)=4286578691] [L55] RET return x != x; VAL [\old(x)=4286578691, \result=0, x=4286578691] [L67] EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578692, y=4286578691] [L67] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578692, y=4286578691] [L67-L68] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) VAL [(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))=1, isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578692, y=4286578691] [L67-L68] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L70] CALL, EXPR fmax_float(x, y) VAL [\old(x)=4286578692, \old(y)=4286578691] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578692] [L21] __uint32_t w; VAL [\old(x)=4286578692, x=4286578692] [L24] FCALL ieee_float_shape_type gf_u; [L25] FCALL gf_u.value = (x) [L26] EXPR, FCALL gf_u.word [L26] (w) = gf_u.word [L27] COND FALSE !(0) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] RET return 0; VAL [\old(x)=4286578692, \result=0, w=4286578689, x=4286578692] [L44] EXPR __fpclassify_float(x) VAL [\old(x)=4286578692, \old(y)=4286578691, __fpclassify_float(x)=0, x=4286578692, y=4286578691] [L44] COND TRUE __fpclassify_float(x) == 0 [L45] RET return y; VAL [\old(x)=4286578692, \old(y)=4286578691, \result=4286578691, x=4286578692, y=4286578691] [L70] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578691, x=4286578692, y=4286578691] [L70] float res = fmax_float(x, y); [L73] CALL, EXPR isnan_float(x) VAL [\old(x)=4286578692] [L55] RET return x != x; VAL [\old(x)=4286578692, \result=1, x=4286578692] [L73] EXPR isnan_float(x) VAL [isnan_float(x)=1, res=4286578691, x=4286578692, y=4286578691] [L73] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, res=4286578691, x=4286578692, y=4286578691] [L73] CALL, EXPR isnan_float(y) VAL [\old(x)=4286578691] [L55] RET return x != x; VAL [\old(x)=4286578691, \result=0, x=4286578691] [L73] EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=4286578691, x=4286578692, y=4286578691] [L73] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=4286578691, x=4286578692, y=4286578691] [L73] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L74] __VERIFIER_error() VAL [res=4286578691, x=4286578692, y=4286578691] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 66 locations, 2 error locations. UNSAFE Result, 0.7s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 407 SDtfs, 16 SDslu, 523 SDs, 0 SdLazy, 40 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=5, 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, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 8870 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 33/33 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 0.1.23-5842f4b [2018-11-18 09:10:53,151 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:10:53,153 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:10:53,164 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:10:53,164 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:10:53,165 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:10:53,166 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:10:53,167 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:10:53,169 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:10:53,169 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:10:53,170 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:10:53,171 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:10:53,171 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:10:53,172 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:10:53,173 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:10:53,174 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:10:53,175 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:10:53,176 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:10:53,178 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:10:53,179 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:10:53,180 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:10:53,181 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:10:53,183 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:10:53,183 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:10:53,183 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:10:53,184 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:10:53,185 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:10:53,185 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:10:53,186 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:10:53,187 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:10:53,187 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:10:53,188 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:10:53,188 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:10:53,188 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:10:53,189 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:10:53,189 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:10:53,189 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 09:10:53,201 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:10:53,201 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:10:53,202 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:10:53,202 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 09:10:53,203 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:10:53,203 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:10:53,203 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:10:53,203 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:10:53,204 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:10:53,204 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:10:53,204 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:10:53,204 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:10:53,204 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:10:53,204 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:10:53,204 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 09:10:53,205 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 09:10:53,205 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:10:53,205 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:10:53,205 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:10:53,205 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:10:53,206 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:10:53,206 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:10:53,206 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:10:53,206 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:10:53,206 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:10:53,206 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:10:53,207 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:10:53,207 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:10:53,207 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 09:10:53,207 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:10:53,207 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 09:10:53,207 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 09:10:53,208 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_08b8e314-a546-4a2c-9570-33d99a9e301e/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 -> df3954142d6b55c98b13b60b9fbaf053d4d402ff [2018-11-18 09:10:53,243 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:10:53,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:10:53,257 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:10:53,258 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:10:53,258 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:10:53,259 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1251_true-unreach-call.c [2018-11-18 09:10:53,309 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/data/ef6fd557d/b3dabd563fce477db6a79199ab361a6f/FLAGdefdd04e9 [2018-11-18 09:10:53,655 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:10:53,655 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/sv-benchmarks/c/float-newlib/float_req_bl_1251_true-unreach-call.c [2018-11-18 09:10:53,661 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/data/ef6fd557d/b3dabd563fce477db6a79199ab361a6f/FLAGdefdd04e9 [2018-11-18 09:10:54,074 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/data/ef6fd557d/b3dabd563fce477db6a79199ab361a6f [2018-11-18 09:10:54,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:10:54,079 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 09:10:54,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:10:54,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:10:54,082 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:10:54,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:10:54" (1/1) ... [2018-11-18 09:10:54,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5995a40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:54, skipping insertion in model container [2018-11-18 09:10:54,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:10:54" (1/1) ... [2018-11-18 09:10:54,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:10:54,109 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:10:54,261 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:10:54,264 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:10:54,284 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:10:54,301 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:10:54,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:54 WrapperNode [2018-11-18 09:10:54,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:10:54,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:10:54,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:10:54,302 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:10:54,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:54" (1/1) ... [2018-11-18 09:10:54,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:54" (1/1) ... [2018-11-18 09:10:54,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:54" (1/1) ... [2018-11-18 09:10:54,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:54" (1/1) ... [2018-11-18 09:10:54,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:54" (1/1) ... [2018-11-18 09:10:54,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:54" (1/1) ... [2018-11-18 09:10:54,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:54" (1/1) ... [2018-11-18 09:10:54,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:10:54,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:10:54,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:10:54,340 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:10:54,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/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 [2018-11-18 09:10:54,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:10:54,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:10:54,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-18 09:10:54,440 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-18 09:10:54,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-18 09:10:54,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:10:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 09:10:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-18 09:10:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-18 09:10:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 09:10:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 09:10:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 09:10:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 09:10:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-18 09:10:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-18 09:10:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:10:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:10:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:10:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 09:10:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 09:10:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-11-18 09:10:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-18 09:10:54,694 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:10:54,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:10:54 BoogieIcfgContainer [2018-11-18 09:10:54,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:10:54,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:10:54,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:10:54,697 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:10:54,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:10:54" (1/3) ... [2018-11-18 09:10:54,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c59e5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:10:54, skipping insertion in model container [2018-11-18 09:10:54,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:54" (2/3) ... [2018-11-18 09:10:54,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c59e5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:10:54, skipping insertion in model container [2018-11-18 09:10:54,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:10:54" (3/3) ... [2018-11-18 09:10:54,700 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251_true-unreach-call.c [2018-11-18 09:10:54,707 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:10:54,713 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-18 09:10:54,723 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-18 09:10:54,748 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:10:54,749 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:10:54,749 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:10:54,749 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:10:54,749 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:10:54,749 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:10:54,749 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:10:54,750 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:10:54,750 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:10:54,762 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-11-18 09:10:54,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 09:10:54,767 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:54,768 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:54,769 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:54,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:54,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1491991264, now seen corresponding path program 1 times [2018-11-18 09:10:54,777 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:10:54,777 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 09:10:54,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:54,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:10:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:10:54,891 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:10:54,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:10:54,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:10:54,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 09:10:54,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 09:10:54,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:10:54,921 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 2 states. [2018-11-18 09:10:54,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:54,946 INFO L93 Difference]: Finished difference Result 105 states and 146 transitions. [2018-11-18 09:10:54,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:10:54,947 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2018-11-18 09:10:54,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:54,954 INFO L225 Difference]: With dead ends: 105 [2018-11-18 09:10:54,954 INFO L226 Difference]: Without dead ends: 59 [2018-11-18 09:10:54,957 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:10:54,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-18 09:10:54,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-11-18 09:10:54,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-18 09:10:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2018-11-18 09:10:54,993 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 35 [2018-11-18 09:10:54,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:54,994 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2018-11-18 09:10:54,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 09:10:54,995 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2018-11-18 09:10:54,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 09:10:54,997 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:54,997 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:54,997 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:54,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:54,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1296823684, now seen corresponding path program 1 times [2018-11-18 09:10:54,998 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:10:54,998 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 09:10:55,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:55,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:10:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:10:55,086 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:10:55,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:10:55,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:10:55,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:10:55,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:10:55,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:10:55,097 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand 4 states. [2018-11-18 09:10:55,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:55,164 INFO L93 Difference]: Finished difference Result 108 states and 143 transitions. [2018-11-18 09:10:55,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:10:55,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-18 09:10:55,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:55,166 INFO L225 Difference]: With dead ends: 108 [2018-11-18 09:10:55,166 INFO L226 Difference]: Without dead ends: 68 [2018-11-18 09:10:55,167 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:10:55,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-18 09:10:55,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2018-11-18 09:10:55,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-18 09:10:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2018-11-18 09:10:55,177 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 36 [2018-11-18 09:10:55,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:55,177 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2018-11-18 09:10:55,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:10:55,178 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2018-11-18 09:10:55,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-18 09:10:55,179 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:55,179 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:55,179 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:55,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:55,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1235983129, now seen corresponding path program 1 times [2018-11-18 09:10:55,180 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:10:55,180 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 09:10:55,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:55,238 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:10:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 09:10:55,268 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:10:55,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:10:55,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:10:55,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:10:55,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:10:55,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:10:55,277 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand 4 states. [2018-11-18 09:10:55,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:55,299 INFO L93 Difference]: Finished difference Result 86 states and 111 transitions. [2018-11-18 09:10:55,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:10:55,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-11-18 09:10:55,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:55,303 INFO L225 Difference]: With dead ends: 86 [2018-11-18 09:10:55,303 INFO L226 Difference]: Without dead ends: 64 [2018-11-18 09:10:55,303 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:10:55,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-18 09:10:55,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-11-18 09:10:55,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-18 09:10:55,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2018-11-18 09:10:55,312 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 41 [2018-11-18 09:10:55,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:55,312 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2018-11-18 09:10:55,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:10:55,313 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2018-11-18 09:10:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-18 09:10:55,314 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:55,314 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:55,314 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:55,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:55,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1721436536, now seen corresponding path program 1 times [2018-11-18 09:10:55,315 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:10:55,315 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-18 09:10:55,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:55,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:10:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 09:10:55,381 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:10:55,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:10:55,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:10:55,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:10:55,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:10:55,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:10:55,390 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 4 states. [2018-11-18 09:10:55,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:55,422 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2018-11-18 09:10:55,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:10:55,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-11-18 09:10:55,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:55,424 INFO L225 Difference]: With dead ends: 89 [2018-11-18 09:10:55,424 INFO L226 Difference]: Without dead ends: 67 [2018-11-18 09:10:55,424 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:10:55,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-18 09:10:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2018-11-18 09:10:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-18 09:10:55,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2018-11-18 09:10:55,432 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 42 [2018-11-18 09:10:55,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:55,433 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2018-11-18 09:10:55,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:10:55,433 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2018-11-18 09:10:55,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-18 09:10:55,434 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:55,434 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:55,435 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:55,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:55,435 INFO L82 PathProgramCache]: Analyzing trace with hash 647405579, now seen corresponding path program 1 times [2018-11-18 09:10:55,435 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:10:55,436 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-18 09:10:55,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:55,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:10:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 09:10:55,506 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:10:55,516 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:10:55,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:10:55,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:10:55,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:10:55,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:10:55,517 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 4 states. [2018-11-18 09:10:55,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:55,543 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2018-11-18 09:10:55,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:10:55,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-11-18 09:10:55,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:55,544 INFO L225 Difference]: With dead ends: 89 [2018-11-18 09:10:55,544 INFO L226 Difference]: Without dead ends: 67 [2018-11-18 09:10:55,545 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:10:55,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-18 09:10:55,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2018-11-18 09:10:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-18 09:10:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2018-11-18 09:10:55,551 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 43 [2018-11-18 09:10:55,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:55,551 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2018-11-18 09:10:55,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:10:55,552 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2018-11-18 09:10:55,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 09:10:55,553 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:55,553 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:55,553 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:55,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:55,554 INFO L82 PathProgramCache]: Analyzing trace with hash -847543076, now seen corresponding path program 1 times [2018-11-18 09:10:55,554 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:10:55,554 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-18 09:10:55,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:55,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:10:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 09:10:55,609 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:10:55,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:10:55,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:10:55,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:10:55,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:10:55,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:10:55,618 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 4 states. [2018-11-18 09:10:55,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:55,637 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2018-11-18 09:10:55,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:10:55,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-11-18 09:10:55,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:55,639 INFO L225 Difference]: With dead ends: 89 [2018-11-18 09:10:55,639 INFO L226 Difference]: Without dead ends: 67 [2018-11-18 09:10:55,639 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:10:55,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-18 09:10:55,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2018-11-18 09:10:55,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-18 09:10:55,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2018-11-18 09:10:55,647 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 44 [2018-11-18 09:10:55,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:55,647 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2018-11-18 09:10:55,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:10:55,648 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2018-11-18 09:10:55,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 09:10:55,649 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:55,649 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:55,649 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:55,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:55,650 INFO L82 PathProgramCache]: Analyzing trace with hash 660008733, now seen corresponding path program 1 times [2018-11-18 09:10:55,650 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:10:55,650 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-18 09:10:55,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:55,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:10:55,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 09:10:55,821 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:10:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 09:10:56,124 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:10:56,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2018-11-18 09:10:56,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 09:10:56,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 09:10:56,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-11-18 09:10:56,126 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 13 states. [2018-11-18 09:10:56,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:56,536 INFO L93 Difference]: Finished difference Result 104 states and 134 transitions. [2018-11-18 09:10:56,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 09:10:56,537 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2018-11-18 09:10:56,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:56,538 INFO L225 Difference]: With dead ends: 104 [2018-11-18 09:10:56,538 INFO L226 Difference]: Without dead ends: 90 [2018-11-18 09:10:56,539 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-11-18 09:10:56,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-11-18 09:10:56,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 76. [2018-11-18 09:10:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-18 09:10:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 101 transitions. [2018-11-18 09:10:56,549 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 101 transitions. Word has length 44 [2018-11-18 09:10:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:56,550 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 101 transitions. [2018-11-18 09:10:56,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 09:10:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 101 transitions. [2018-11-18 09:10:56,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-18 09:10:56,551 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:56,553 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:56,553 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:56,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:56,554 INFO L82 PathProgramCache]: Analyzing trace with hash 449330556, now seen corresponding path program 1 times [2018-11-18 09:10:56,554 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:10:56,554 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-18 09:10:56,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:56,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:10:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 09:10:56,671 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:10:56,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:10:56,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 09:10:56,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 09:10:56,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 09:10:56,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 09:10:56,683 INFO L87 Difference]: Start difference. First operand 76 states and 101 transitions. Second operand 8 states. [2018-11-18 09:10:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:56,978 INFO L93 Difference]: Finished difference Result 133 states and 174 transitions. [2018-11-18 09:10:56,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 09:10:56,979 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-11-18 09:10:56,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:56,980 INFO L225 Difference]: With dead ends: 133 [2018-11-18 09:10:56,980 INFO L226 Difference]: Without dead ends: 89 [2018-11-18 09:10:56,980 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-18 09:10:56,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-18 09:10:56,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 76. [2018-11-18 09:10:56,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-18 09:10:56,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2018-11-18 09:10:56,989 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 46 [2018-11-18 09:10:56,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:56,989 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2018-11-18 09:10:56,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 09:10:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2018-11-18 09:10:56,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-18 09:10:56,991 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:56,991 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:56,991 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:56,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:56,992 INFO L82 PathProgramCache]: Analyzing trace with hash 502382687, now seen corresponding path program 1 times [2018-11-18 09:10:56,992 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:10:56,992 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-11-18 09:10:57,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:57,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:10:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 09:10:57,079 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:10:57,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:10:57,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:10:57,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:10:57,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:10:57,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:10:57,088 INFO L87 Difference]: Start difference. First operand 76 states and 100 transitions. Second operand 3 states. [2018-11-18 09:10:57,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:57,100 INFO L93 Difference]: Finished difference Result 79 states and 103 transitions. [2018-11-18 09:10:57,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:10:57,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-11-18 09:10:57,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:57,102 INFO L225 Difference]: With dead ends: 79 [2018-11-18 09:10:57,102 INFO L226 Difference]: Without dead ends: 77 [2018-11-18 09:10:57,102 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:10:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-18 09:10:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-11-18 09:10:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-18 09:10:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 101 transitions. [2018-11-18 09:10:57,110 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 101 transitions. Word has length 51 [2018-11-18 09:10:57,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:57,110 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 101 transitions. [2018-11-18 09:10:57,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:10:57,110 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2018-11-18 09:10:57,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 09:10:57,111 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:57,111 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:57,111 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:57,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:57,112 INFO L82 PathProgramCache]: Analyzing trace with hash -2021247217, now seen corresponding path program 1 times [2018-11-18 09:10:57,112 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:10:57,112 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-11-18 09:10:57,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:57,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:10:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 09:10:57,247 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:10:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-18 09:10:57,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:10:57,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2018-11-18 09:10:57,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 09:10:57,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 09:10:57,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-18 09:10:57,459 INFO L87 Difference]: Start difference. First operand 77 states and 101 transitions. Second operand 12 states. [2018-11-18 09:10:57,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:57,783 INFO L93 Difference]: Finished difference Result 102 states and 130 transitions. [2018-11-18 09:10:57,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 09:10:57,784 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2018-11-18 09:10:57,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:57,785 INFO L225 Difference]: With dead ends: 102 [2018-11-18 09:10:57,785 INFO L226 Difference]: Without dead ends: 86 [2018-11-18 09:10:57,786 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-18 09:10:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-18 09:10:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2018-11-18 09:10:57,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-18 09:10:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 100 transitions. [2018-11-18 09:10:57,795 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 100 transitions. Word has length 56 [2018-11-18 09:10:57,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:57,795 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 100 transitions. [2018-11-18 09:10:57,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 09:10:57,795 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 100 transitions. [2018-11-18 09:10:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-18 09:10:57,796 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:57,796 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:57,797 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:57,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:57,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1483116305, now seen corresponding path program 1 times [2018-11-18 09:10:57,797 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:10:57,797 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-11-18 09:10:57,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:57,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:10:58,041 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 09:10:58,041 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:10:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 09:10:58,488 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:10:58,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-11-18 09:10:58,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-18 09:10:58,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-18 09:10:58,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2018-11-18 09:10:58,490 INFO L87 Difference]: Start difference. First operand 77 states and 100 transitions. Second operand 19 states. [2018-11-18 09:10:59,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:10:59,402 INFO L93 Difference]: Finished difference Result 116 states and 150 transitions. [2018-11-18 09:10:59,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 09:10:59,403 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2018-11-18 09:10:59,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:10:59,404 INFO L225 Difference]: With dead ends: 116 [2018-11-18 09:10:59,404 INFO L226 Difference]: Without dead ends: 114 [2018-11-18 09:10:59,404 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2018-11-18 09:10:59,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-11-18 09:10:59,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 87. [2018-11-18 09:10:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-18 09:10:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 115 transitions. [2018-11-18 09:10:59,413 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 115 transitions. Word has length 49 [2018-11-18 09:10:59,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:10:59,414 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 115 transitions. [2018-11-18 09:10:59,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-18 09:10:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 115 transitions. [2018-11-18 09:10:59,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 09:10:59,414 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:10:59,414 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:10:59,415 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:10:59,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:59,415 INFO L82 PathProgramCache]: Analyzing trace with hash 2013955655, now seen corresponding path program 1 times [2018-11-18 09:10:59,415 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:10:59,415 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-11-18 09:10:59,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:10:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:59,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:10:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 09:10:59,526 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:10:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-18 09:10:59,709 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:10:59,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2018-11-18 09:10:59,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 09:10:59,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 09:10:59,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-11-18 09:10:59,709 INFO L87 Difference]: Start difference. First operand 87 states and 115 transitions. Second operand 14 states. [2018-11-18 09:11:00,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:00,106 INFO L93 Difference]: Finished difference Result 142 states and 182 transitions. [2018-11-18 09:11:00,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 09:11:00,107 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2018-11-18 09:11:00,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:00,107 INFO L225 Difference]: With dead ends: 142 [2018-11-18 09:11:00,107 INFO L226 Difference]: Without dead ends: 89 [2018-11-18 09:11:00,108 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-11-18 09:11:00,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-18 09:11:00,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2018-11-18 09:11:00,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-18 09:11:00,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2018-11-18 09:11:00,115 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 56 [2018-11-18 09:11:00,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:00,115 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2018-11-18 09:11:00,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 09:11:00,115 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2018-11-18 09:11:00,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-18 09:11:00,116 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:00,116 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:00,116 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:00,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:00,117 INFO L82 PathProgramCache]: Analyzing trace with hash 293292411, now seen corresponding path program 1 times [2018-11-18 09:11:00,119 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:00,119 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:00,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:00,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:00,240 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 09:11:00,240 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:11:00,391 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-18 09:11:00,398 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:11:00,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2018-11-18 09:11:00,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 09:11:00,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 09:11:00,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-18 09:11:00,399 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand 12 states. [2018-11-18 09:11:00,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:00,664 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2018-11-18 09:11:00,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 09:11:00,664 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2018-11-18 09:11:00,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:00,665 INFO L225 Difference]: With dead ends: 92 [2018-11-18 09:11:00,665 INFO L226 Difference]: Without dead ends: 89 [2018-11-18 09:11:00,665 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-18 09:11:00,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-18 09:11:00,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2018-11-18 09:11:00,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-11-18 09:11:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2018-11-18 09:11:00,670 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 58 [2018-11-18 09:11:00,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:00,670 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2018-11-18 09:11:00,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 09:11:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2018-11-18 09:11:00,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-18 09:11:00,671 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:00,671 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:00,671 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:00,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:00,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1535897541, now seen corresponding path program 1 times [2018-11-18 09:11:00,672 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:00,672 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:00,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:00,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 09:11:00,716 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:11:00,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:11:00,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:11:00,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:11:00,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:11:00,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:11:00,724 INFO L87 Difference]: Start difference. First operand 83 states and 106 transitions. Second operand 4 states. [2018-11-18 09:11:00,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:00,733 INFO L93 Difference]: Finished difference Result 116 states and 147 transitions. [2018-11-18 09:11:00,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:11:00,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-11-18 09:11:00,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:00,735 INFO L225 Difference]: With dead ends: 116 [2018-11-18 09:11:00,735 INFO L226 Difference]: Without dead ends: 86 [2018-11-18 09:11:00,735 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:11:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-18 09:11:00,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-11-18 09:11:00,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-11-18 09:11:00,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2018-11-18 09:11:00,740 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 54 [2018-11-18 09:11:00,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:00,741 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2018-11-18 09:11:00,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:11:00,741 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2018-11-18 09:11:00,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-18 09:11:00,743 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:00,743 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:00,744 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:00,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:00,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1222168456, now seen corresponding path program 1 times [2018-11-18 09:11:00,744 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:00,744 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:00,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:00,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 09:11:00,819 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:11:00,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:11:00,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:11:00,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:11:00,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:11:00,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:11:00,827 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand 4 states. [2018-11-18 09:11:00,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:00,839 INFO L93 Difference]: Finished difference Result 119 states and 151 transitions. [2018-11-18 09:11:00,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:11:00,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-11-18 09:11:00,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:00,840 INFO L225 Difference]: With dead ends: 119 [2018-11-18 09:11:00,840 INFO L226 Difference]: Without dead ends: 89 [2018-11-18 09:11:00,840 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:11:00,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-18 09:11:00,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2018-11-18 09:11:00,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-11-18 09:11:00,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2018-11-18 09:11:00,845 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 55 [2018-11-18 09:11:00,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:00,846 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2018-11-18 09:11:00,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:11:00,846 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2018-11-18 09:11:00,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 09:11:00,846 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:00,847 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:00,847 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:00,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:00,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1394726144, now seen corresponding path program 1 times [2018-11-18 09:11:00,847 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:00,847 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:00,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:00,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 09:11:01,031 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:11:01,151 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:11:01,151 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:11:01,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:01,176 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:01,189 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 09:11:01,189 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:11:01,336 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:11:01,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-18 09:11:01,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 09:11:01,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 09:11:01,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-18 09:11:01,337 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand 8 states. [2018-11-18 09:11:01,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:01,893 INFO L93 Difference]: Finished difference Result 114 states and 142 transitions. [2018-11-18 09:11:01,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 09:11:01,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2018-11-18 09:11:01,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:01,893 INFO L225 Difference]: With dead ends: 114 [2018-11-18 09:11:01,894 INFO L226 Difference]: Without dead ends: 94 [2018-11-18 09:11:01,894 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-18 09:11:01,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-11-18 09:11:01,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 89. [2018-11-18 09:11:01,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-11-18 09:11:01,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 113 transitions. [2018-11-18 09:11:01,898 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 113 transitions. Word has length 56 [2018-11-18 09:11:01,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:01,898 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 113 transitions. [2018-11-18 09:11:01,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 09:11:01,898 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 113 transitions. [2018-11-18 09:11:01,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 09:11:01,899 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:01,899 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:01,900 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:01,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:01,900 INFO L82 PathProgramCache]: Analyzing trace with hash 906096446, now seen corresponding path program 1 times [2018-11-18 09:11:01,900 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:01,900 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:01,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:01,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-18 09:11:02,083 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:11:02,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:11:02,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-18 09:11:02,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 09:11:02,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 09:11:02,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-11-18 09:11:02,091 INFO L87 Difference]: Start difference. First operand 89 states and 113 transitions. Second operand 11 states. [2018-11-18 09:11:02,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:02,745 INFO L93 Difference]: Finished difference Result 124 states and 157 transitions. [2018-11-18 09:11:02,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 09:11:02,745 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2018-11-18 09:11:02,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:02,746 INFO L225 Difference]: With dead ends: 124 [2018-11-18 09:11:02,746 INFO L226 Difference]: Without dead ends: 122 [2018-11-18 09:11:02,746 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-11-18 09:11:02,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-11-18 09:11:02,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 94. [2018-11-18 09:11:02,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-11-18 09:11:02,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2018-11-18 09:11:02,753 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 56 [2018-11-18 09:11:02,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:02,754 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2018-11-18 09:11:02,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 09:11:02,754 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2018-11-18 09:11:02,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 09:11:02,754 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:02,755 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:02,755 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:02,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:02,755 INFO L82 PathProgramCache]: Analyzing trace with hash -812428457, now seen corresponding path program 1 times [2018-11-18 09:11:02,755 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:02,755 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:02,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:02,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 09:11:02,837 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:11:02,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:11:02,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:11:02,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:11:02,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:11:02,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:11:02,845 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand 4 states. [2018-11-18 09:11:02,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:02,860 INFO L93 Difference]: Finished difference Result 127 states and 161 transitions. [2018-11-18 09:11:02,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:11:02,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-11-18 09:11:02,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:02,862 INFO L225 Difference]: With dead ends: 127 [2018-11-18 09:11:02,862 INFO L226 Difference]: Without dead ends: 97 [2018-11-18 09:11:02,862 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:11:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-11-18 09:11:02,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2018-11-18 09:11:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-11-18 09:11:02,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2018-11-18 09:11:02,870 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 56 [2018-11-18 09:11:02,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:02,870 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2018-11-18 09:11:02,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:11:02,870 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2018-11-18 09:11:02,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-18 09:11:02,871 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:02,871 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:02,871 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:02,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:02,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1019494909, now seen corresponding path program 1 times [2018-11-18 09:11:02,872 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:02,872 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:02,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:02,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-18 09:11:03,278 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:11:03,390 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2018-11-18 09:11:03,852 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2018-11-18 09:11:04,031 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-11-18 09:11:04,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:11:04,167 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:11:04,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:04,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 09:11:04,374 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:11:05,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:11:05,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 17 [2018-11-18 09:11:05,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 09:11:05,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 09:11:05,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2018-11-18 09:11:05,082 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand 17 states. [2018-11-18 09:11:06,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:06,528 INFO L93 Difference]: Finished difference Result 132 states and 170 transitions. [2018-11-18 09:11:06,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 09:11:06,529 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 63 [2018-11-18 09:11:06,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:06,529 INFO L225 Difference]: With dead ends: 132 [2018-11-18 09:11:06,529 INFO L226 Difference]: Without dead ends: 113 [2018-11-18 09:11:06,530 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 156 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2018-11-18 09:11:06,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-11-18 09:11:06,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 106. [2018-11-18 09:11:06,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-11-18 09:11:06,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 137 transitions. [2018-11-18 09:11:06,537 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 137 transitions. Word has length 63 [2018-11-18 09:11:06,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:06,537 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 137 transitions. [2018-11-18 09:11:06,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 09:11:06,537 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 137 transitions. [2018-11-18 09:11:06,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 09:11:06,538 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:06,538 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:06,538 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:06,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:06,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1496575625, now seen corresponding path program 1 times [2018-11-18 09:11:06,539 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:06,539 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:06,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:06,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 09:11:06,667 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:11:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-18 09:11:06,858 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:11:06,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2018-11-18 09:11:06,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 09:11:06,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 09:11:06,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-11-18 09:11:06,859 INFO L87 Difference]: Start difference. First operand 106 states and 137 transitions. Second operand 13 states. [2018-11-18 09:11:07,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:07,121 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2018-11-18 09:11:07,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 09:11:07,121 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2018-11-18 09:11:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:07,122 INFO L225 Difference]: With dead ends: 116 [2018-11-18 09:11:07,122 INFO L226 Difference]: Without dead ends: 92 [2018-11-18 09:11:07,122 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-11-18 09:11:07,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-11-18 09:11:07,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2018-11-18 09:11:07,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-11-18 09:11:07,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 111 transitions. [2018-11-18 09:11:07,126 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 111 transitions. Word has length 56 [2018-11-18 09:11:07,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:07,126 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 111 transitions. [2018-11-18 09:11:07,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 09:11:07,127 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 111 transitions. [2018-11-18 09:11:07,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 09:11:07,127 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:07,127 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:07,128 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:07,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:07,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1412697931, now seen corresponding path program 1 times [2018-11-18 09:11:07,129 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:07,129 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:07,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:07,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 09:11:07,340 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:11:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 09:11:07,718 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:11:07,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-11-18 09:11:07,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-18 09:11:07,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-18 09:11:07,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2018-11-18 09:11:07,719 INFO L87 Difference]: Start difference. First operand 88 states and 111 transitions. Second operand 21 states. [2018-11-18 09:11:08,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:08,418 INFO L93 Difference]: Finished difference Result 105 states and 130 transitions. [2018-11-18 09:11:08,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 09:11:08,419 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2018-11-18 09:11:08,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:08,419 INFO L225 Difference]: With dead ends: 105 [2018-11-18 09:11:08,420 INFO L226 Difference]: Without dead ends: 91 [2018-11-18 09:11:08,420 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2018-11-18 09:11:08,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-11-18 09:11:08,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2018-11-18 09:11:08,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-11-18 09:11:08,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2018-11-18 09:11:08,424 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 57 [2018-11-18 09:11:08,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:08,424 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2018-11-18 09:11:08,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-18 09:11:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2018-11-18 09:11:08,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 09:11:08,425 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:08,425 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:08,425 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:08,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:08,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1095720220, now seen corresponding path program 1 times [2018-11-18 09:11:08,425 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:08,425 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 25 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:08,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:08,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 09:11:08,489 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:11:08,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:11:08,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:11:08,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:11:08,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:11:08,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:11:08,496 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand 4 states. [2018-11-18 09:11:08,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:08,505 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2018-11-18 09:11:08,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:11:08,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-11-18 09:11:08,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:08,506 INFO L225 Difference]: With dead ends: 111 [2018-11-18 09:11:08,506 INFO L226 Difference]: Without dead ends: 81 [2018-11-18 09:11:08,506 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:11:08,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-11-18 09:11:08,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2018-11-18 09:11:08,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-11-18 09:11:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2018-11-18 09:11:08,510 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 57 [2018-11-18 09:11:08,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:08,510 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2018-11-18 09:11:08,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:11:08,510 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2018-11-18 09:11:08,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 09:11:08,511 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:08,511 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:08,511 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:08,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:08,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1504544445, now seen corresponding path program 1 times [2018-11-18 09:11:08,511 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:08,511 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:08,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:08,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:09,024 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 09:11:09,024 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:11:09,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:11:09,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-11-18 09:11:09,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 09:11:09,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 09:11:09,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2018-11-18 09:11:09,034 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand 15 states. [2018-11-18 09:11:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:10,187 INFO L93 Difference]: Finished difference Result 107 states and 129 transitions. [2018-11-18 09:11:10,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 09:11:10,188 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2018-11-18 09:11:10,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:10,188 INFO L225 Difference]: With dead ends: 107 [2018-11-18 09:11:10,188 INFO L226 Difference]: Without dead ends: 68 [2018-11-18 09:11:10,189 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2018-11-18 09:11:10,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-18 09:11:10,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2018-11-18 09:11:10,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-18 09:11:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2018-11-18 09:11:10,194 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 57 [2018-11-18 09:11:10,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:10,194 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2018-11-18 09:11:10,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 09:11:10,194 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2018-11-18 09:11:10,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-18 09:11:10,194 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:10,194 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:10,195 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:10,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:10,195 INFO L82 PathProgramCache]: Analyzing trace with hash -579175312, now seen corresponding path program 1 times [2018-11-18 09:11:10,195 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:10,195 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 27 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:10,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:10,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-18 09:11:10,444 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:11:10,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:11:10,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 09:11:10,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 09:11:10,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 09:11:10,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 09:11:10,453 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 9 states. [2018-11-18 09:11:10,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:10,819 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2018-11-18 09:11:10,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 09:11:10,820 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2018-11-18 09:11:10,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:10,820 INFO L225 Difference]: With dead ends: 76 [2018-11-18 09:11:10,820 INFO L226 Difference]: Without dead ends: 57 [2018-11-18 09:11:10,820 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-18 09:11:10,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-18 09:11:10,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2018-11-18 09:11:10,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-18 09:11:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2018-11-18 09:11:10,823 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 70 [2018-11-18 09:11:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:10,823 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2018-11-18 09:11:10,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 09:11:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2018-11-18 09:11:10,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-18 09:11:10,824 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:10,824 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:10,824 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:10,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:10,824 INFO L82 PathProgramCache]: Analyzing trace with hash -438626702, now seen corresponding path program 1 times [2018-11-18 09:11:10,824 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:10,824 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 28 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:10,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:10,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-18 09:11:11,053 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:11:11,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:11:11,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-18 09:11:11,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 09:11:11,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 09:11:11,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-18 09:11:11,062 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 12 states. [2018-11-18 09:11:11,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:11,572 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2018-11-18 09:11:11,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 09:11:11,572 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2018-11-18 09:11:11,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:11,573 INFO L225 Difference]: With dead ends: 79 [2018-11-18 09:11:11,573 INFO L226 Difference]: Without dead ends: 58 [2018-11-18 09:11:11,573 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-18 09:11:11,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-18 09:11:11,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-11-18 09:11:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-18 09:11:11,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2018-11-18 09:11:11,576 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 70 [2018-11-18 09:11:11,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:11,576 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2018-11-18 09:11:11,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 09:11:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2018-11-18 09:11:11,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-18 09:11:11,577 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:11,577 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:11,577 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:11,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:11,577 INFO L82 PathProgramCache]: Analyzing trace with hash -435616119, now seen corresponding path program 1 times [2018-11-18 09:11:11,577 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:11,577 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 29 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:11,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:11,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-18 09:11:11,840 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:11:11,851 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:11:11,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-18 09:11:11,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 09:11:11,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 09:11:11,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-18 09:11:11,852 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 12 states. [2018-11-18 09:11:12,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:12,519 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2018-11-18 09:11:12,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 09:11:12,519 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2018-11-18 09:11:12,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:12,520 INFO L225 Difference]: With dead ends: 81 [2018-11-18 09:11:12,520 INFO L226 Difference]: Without dead ends: 60 [2018-11-18 09:11:12,520 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-18 09:11:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-18 09:11:12,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2018-11-18 09:11:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-18 09:11:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2018-11-18 09:11:12,524 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 71 [2018-11-18 09:11:12,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:12,524 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2018-11-18 09:11:12,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 09:11:12,524 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2018-11-18 09:11:12,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-18 09:11:12,525 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:12,525 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:12,525 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:12,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:12,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1816791663, now seen corresponding path program 1 times [2018-11-18 09:11:12,525 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:12,525 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 30 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:12,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:12,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-18 09:11:12,701 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:11:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-18 09:11:13,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:11:13,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-11-18 09:11:13,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 09:11:13,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 09:11:13,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2018-11-18 09:11:13,216 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 17 states. [2018-11-18 09:11:13,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:13,790 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2018-11-18 09:11:13,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 09:11:13,790 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 71 [2018-11-18 09:11:13,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:13,791 INFO L225 Difference]: With dead ends: 83 [2018-11-18 09:11:13,791 INFO L226 Difference]: Without dead ends: 68 [2018-11-18 09:11:13,791 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2018-11-18 09:11:13,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-18 09:11:13,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2018-11-18 09:11:13,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-18 09:11:13,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2018-11-18 09:11:13,796 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 71 [2018-11-18 09:11:13,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:13,796 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2018-11-18 09:11:13,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 09:11:13,796 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2018-11-18 09:11:13,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-18 09:11:13,797 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:13,797 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:13,797 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:13,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:13,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1864848554, now seen corresponding path program 1 times [2018-11-18 09:11:13,797 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:13,797 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 31 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:13,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:13,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:14,187 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-18 09:11:14,187 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:11:14,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:11:14,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-18 09:11:14,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 09:11:14,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 09:11:14,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-18 09:11:14,196 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand 12 states. [2018-11-18 09:11:15,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:15,017 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2018-11-18 09:11:15,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 09:11:15,018 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2018-11-18 09:11:15,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:15,018 INFO L225 Difference]: With dead ends: 85 [2018-11-18 09:11:15,018 INFO L226 Difference]: Without dead ends: 64 [2018-11-18 09:11:15,019 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-18 09:11:15,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-18 09:11:15,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2018-11-18 09:11:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-18 09:11:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2018-11-18 09:11:15,023 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 72 [2018-11-18 09:11:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:15,024 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2018-11-18 09:11:15,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 09:11:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2018-11-18 09:11:15,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-18 09:11:15,024 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:15,025 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:15,025 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:15,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:15,025 INFO L82 PathProgramCache]: Analyzing trace with hash -719516260, now seen corresponding path program 1 times [2018-11-18 09:11:15,025 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:15,025 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 32 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:15,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:15,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:15,188 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-18 09:11:15,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:11:15,455 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-18 09:11:15,463 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:11:15,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-11-18 09:11:15,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 09:11:15,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 09:11:15,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-11-18 09:11:15,464 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand 17 states. [2018-11-18 09:11:15,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:15,884 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2018-11-18 09:11:15,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 09:11:15,885 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 72 [2018-11-18 09:11:15,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:15,885 INFO L225 Difference]: With dead ends: 78 [2018-11-18 09:11:15,885 INFO L226 Difference]: Without dead ends: 63 [2018-11-18 09:11:15,886 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2018-11-18 09:11:15,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-18 09:11:15,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2018-11-18 09:11:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-18 09:11:15,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2018-11-18 09:11:15,889 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 72 [2018-11-18 09:11:15,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:15,889 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2018-11-18 09:11:15,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 09:11:15,889 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2018-11-18 09:11:15,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-18 09:11:15,890 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:15,890 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:15,890 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:15,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:15,890 INFO L82 PathProgramCache]: Analyzing trace with hash -448974291, now seen corresponding path program 1 times [2018-11-18 09:11:15,890 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:15,890 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 33 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:15,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:15,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-18 09:11:16,098 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:11:16,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:11:16,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-18 09:11:16,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 09:11:16,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 09:11:16,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-18 09:11:16,105 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 12 states. [2018-11-18 09:11:16,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:16,627 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2018-11-18 09:11:16,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 09:11:16,628 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2018-11-18 09:11:16,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:16,628 INFO L225 Difference]: With dead ends: 78 [2018-11-18 09:11:16,628 INFO L226 Difference]: Without dead ends: 57 [2018-11-18 09:11:16,629 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-11-18 09:11:16,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-18 09:11:16,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2018-11-18 09:11:16,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-18 09:11:16,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2018-11-18 09:11:16,633 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 73 [2018-11-18 09:11:16,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:16,634 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2018-11-18 09:11:16,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 09:11:16,634 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2018-11-18 09:11:16,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-18 09:11:16,634 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:11:16,634 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:11:16,635 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:11:16,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:11:16,635 INFO L82 PathProgramCache]: Analyzing trace with hash 244127406, now seen corresponding path program 1 times [2018-11-18 09:11:16,635 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:11:16,635 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/mathsat Starting monitored process 34 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with mathsat -unsat_core_generation=3 [2018-11-18 09:11:16,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:11:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:11:16,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:11:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-18 09:11:16,715 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:11:16,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:11:16,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:11:16,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:11:16,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:11:16,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:11:16,724 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 4 states. [2018-11-18 09:11:16,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:11:16,730 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-11-18 09:11:16,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:11:16,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-11-18 09:11:16,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:11:16,730 INFO L225 Difference]: With dead ends: 58 [2018-11-18 09:11:16,731 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 09:11:16,731 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:11:16,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 09:11:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 09:11:16,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 09:11:16,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 09:11:16,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2018-11-18 09:11:16,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:11:16,731 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:11:16,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:11:16,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 09:11:16,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 09:11:16,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 09:11:17,182 INFO L425 ceAbstractionStarter]: For program point isnan_floatFINAL(line 55) no Hoare annotation was computed. [2018-11-18 09:11:17,182 INFO L428 ceAbstractionStarter]: At program point isnan_floatENTRY(line 55) the Hoare annotation is: true [2018-11-18 09:11:17,182 INFO L425 ceAbstractionStarter]: For program point isnan_floatEXIT(line 55) no Hoare annotation was computed. [2018-11-18 09:11:17,182 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 09:11:17,182 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 09:11:17,182 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 09:11:17,183 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 09:11:17,183 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 09:11:17,183 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 09:11:17,183 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 09:11:17,183 INFO L421 ceAbstractionStarter]: At program point L68-3(line 68) the Hoare annotation is: (and (not |main_#t~short9|) (not |main_#t~short13|) (fp.eq main_~x~0 main_~x~0) (= (_ bv0 32) |main_#t~ret7|) (= |main_#t~ret10| (_ bv0 32)) |main_#t~short12|) [2018-11-18 09:11:17,183 INFO L425 ceAbstractionStarter]: For program point L68-4(line 68) no Hoare annotation was computed. [2018-11-18 09:11:17,183 INFO L425 ceAbstractionStarter]: For program point L68-6(line 68) no Hoare annotation was computed. [2018-11-18 09:11:17,183 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 57 86) no Hoare annotation was computed. [2018-11-18 09:11:17,183 INFO L421 ceAbstractionStarter]: At program point L73(line 73) the Hoare annotation is: (let ((.cse1 (fp.eq main_~x~0 main_~x~0)) (.cse0 (fp.eq main_~y~0 main_~y~0))) (or (and (and (= main_~y~0 main_~res~0) .cse0) (not .cse1)) (and (= main_~x~0 main_~res~0) .cse1 (not .cse0)))) [2018-11-18 09:11:17,183 INFO L425 ceAbstractionStarter]: For program point L73-1(line 73) no Hoare annotation was computed. [2018-11-18 09:11:17,183 INFO L425 ceAbstractionStarter]: For program point L73-2(line 73) no Hoare annotation was computed. [2018-11-18 09:11:17,183 INFO L421 ceAbstractionStarter]: At program point L73-3(line 73) the Hoare annotation is: (and (= main_~y~0 main_~res~0) |main_#t~short17| (fp.eq main_~y~0 main_~y~0) (not (fp.eq main_~x~0 main_~x~0))) [2018-11-18 09:11:17,184 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-11-18 09:11:17,184 INFO L425 ceAbstractionStarter]: For program point L73-4(line 73) no Hoare annotation was computed. [2018-11-18 09:11:17,184 INFO L425 ceAbstractionStarter]: For program point L73-6(lines 73 76) no Hoare annotation was computed. [2018-11-18 09:11:17,184 INFO L425 ceAbstractionStarter]: For program point L74(line 74) no Hoare annotation was computed. [2018-11-18 09:11:17,184 INFO L421 ceAbstractionStarter]: At program point L70(line 70) the Hoare annotation is: (let ((.cse1 (fp.eq main_~y~0 main_~y~0)) (.cse0 (fp.eq main_~x~0 main_~x~0))) (or (and .cse0 (not .cse1)) (and .cse1 (not .cse0)))) [2018-11-18 09:11:17,184 INFO L425 ceAbstractionStarter]: For program point L70-1(line 70) no Hoare annotation was computed. [2018-11-18 09:11:17,184 INFO L421 ceAbstractionStarter]: At program point L79(line 79) the Hoare annotation is: (or (and (= main_~x~0 main_~res~0) (not (fp.eq main_~y~0 main_~y~0))) (not (fp.eq main_~x~0 main_~x~0))) [2018-11-18 09:11:17,184 INFO L425 ceAbstractionStarter]: For program point L79-1(line 79) no Hoare annotation was computed. [2018-11-18 09:11:17,184 INFO L425 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-11-18 09:11:17,184 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 57 86) no Hoare annotation was computed. [2018-11-18 09:11:17,184 INFO L421 ceAbstractionStarter]: At program point L79-3(line 79) the Hoare annotation is: (and (= main_~x~0 main_~res~0) (fp.eq main_~x~0 main_~x~0) |main_#t~short20| (not (fp.eq main_~y~0 main_~y~0))) [2018-11-18 09:11:17,184 INFO L425 ceAbstractionStarter]: For program point L79-4(line 79) no Hoare annotation was computed. [2018-11-18 09:11:17,185 INFO L425 ceAbstractionStarter]: For program point L79-6(lines 79 82) no Hoare annotation was computed. [2018-11-18 09:11:17,185 INFO L428 ceAbstractionStarter]: At program point L67(line 67) the Hoare annotation is: true [2018-11-18 09:11:17,185 INFO L425 ceAbstractionStarter]: For program point L67-1(line 67) no Hoare annotation was computed. [2018-11-18 09:11:17,185 INFO L425 ceAbstractionStarter]: For program point L67-2(line 67) no Hoare annotation was computed. [2018-11-18 09:11:17,185 INFO L421 ceAbstractionStarter]: At program point L67-3(line 67) the Hoare annotation is: (and (= (_ bv1 32) |main_#t~ret7|) |main_#t~short9| (not (fp.eq main_~x~0 main_~x~0))) [2018-11-18 09:11:17,185 INFO L425 ceAbstractionStarter]: For program point L67-4(line 67) no Hoare annotation was computed. [2018-11-18 09:11:17,185 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 57 86) the Hoare annotation is: true [2018-11-18 09:11:17,185 INFO L425 ceAbstractionStarter]: For program point L67-6(line 67) no Hoare annotation was computed. [2018-11-18 09:11:17,185 INFO L425 ceAbstractionStarter]: For program point L67-7(lines 67 68) no Hoare annotation was computed. [2018-11-18 09:11:17,185 INFO L425 ceAbstractionStarter]: For program point L67-9(lines 67 83) no Hoare annotation was computed. [2018-11-18 09:11:17,185 INFO L425 ceAbstractionStarter]: For program point L67-11(lines 67 83) no Hoare annotation was computed. [2018-11-18 09:11:17,185 INFO L425 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-11-18 09:11:17,186 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2018-11-18 09:11:17,186 INFO L421 ceAbstractionStarter]: At program point L68(line 68) the Hoare annotation is: (let ((.cse2 (fp.eq main_~x~0 main_~x~0)) (.cse0 (not |main_#t~short9|)) (.cse1 (not |main_#t~short13|))) (or (and .cse0 .cse1 .cse2 (= (_ bv0 32) |main_#t~ret7|)) (and (and (= (_ bv1 32) |main_#t~ret7|) (not .cse2)) (= (bvadd |main_#t~ret8| (_ bv4294967295 32)) (_ bv0 32)) .cse0 .cse1 (not (fp.eq main_~y~0 main_~y~0))))) [2018-11-18 09:11:17,186 INFO L425 ceAbstractionStarter]: For program point L68-1(line 68) no Hoare annotation was computed. [2018-11-18 09:11:17,186 INFO L425 ceAbstractionStarter]: For program point L68-2(line 68) no Hoare annotation was computed. [2018-11-18 09:11:17,186 INFO L425 ceAbstractionStarter]: For program point fmax_floatEXIT(lines 43 52) no Hoare annotation was computed. [2018-11-18 09:11:17,186 INFO L428 ceAbstractionStarter]: At program point fmax_floatENTRY(lines 43 52) the Hoare annotation is: true [2018-11-18 09:11:17,186 INFO L425 ceAbstractionStarter]: For program point L51(line 51) no Hoare annotation was computed. [2018-11-18 09:11:17,186 INFO L425 ceAbstractionStarter]: For program point L51-2(line 51) no Hoare annotation was computed. [2018-11-18 09:11:17,186 INFO L421 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-11-18 09:11:17,186 INFO L425 ceAbstractionStarter]: For program point L48-1(lines 48 50) no Hoare annotation was computed. [2018-11-18 09:11:17,186 INFO L421 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-11-18 09:11:17,187 INFO L425 ceAbstractionStarter]: For program point L44-1(lines 44 46) no Hoare annotation was computed. [2018-11-18 09:11:17,187 INFO L425 ceAbstractionStarter]: For program point fmax_floatFINAL(lines 43 52) no Hoare annotation was computed. [2018-11-18 09:11:17,187 INFO L425 ceAbstractionStarter]: For program point L31(lines 31 40) no Hoare annotation was computed. [2018-11-18 09:11:17,187 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 20 41) no Hoare annotation was computed. [2018-11-18 09:11:17,187 INFO L425 ceAbstractionStarter]: For program point L23-1(lines 23 27) no Hoare annotation was computed. [2018-11-18 09:11:17,187 INFO L421 ceAbstractionStarter]: At program point L23-3(lines 23 27) the Hoare annotation is: (= __fpclassify_float_~x |__fpclassify_float_#in~x|) [2018-11-18 09:11:17,187 INFO L425 ceAbstractionStarter]: For program point L23-4(lines 20 41) no Hoare annotation was computed. [2018-11-18 09:11:17,187 INFO L425 ceAbstractionStarter]: For program point L34(lines 34 40) no Hoare annotation was computed. [2018-11-18 09:11:17,187 INFO L428 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 20 41) the Hoare annotation is: true [2018-11-18 09:11:17,187 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 20 41) no Hoare annotation was computed. [2018-11-18 09:11:17,187 INFO L425 ceAbstractionStarter]: For program point L37(lines 37 40) no Hoare annotation was computed. [2018-11-18 09:11:17,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:11:17 BoogieIcfgContainer [2018-11-18 09:11:17,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 09:11:17,199 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:11:17,199 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:11:17,199 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:11:17,199 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:10:54" (3/4) ... [2018-11-18 09:11:17,203 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 09:11:17,209 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-11-18 09:11:17,209 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 09:11:17,209 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 09:11:17,209 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_float [2018-11-18 09:11:17,209 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-11-18 09:11:17,214 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-18 09:11:17,214 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-18 09:11:17,215 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 09:11:17,235 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-11-18 09:11:17,254 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_08b8e314-a546-4a2c-9570-33d99a9e301e/bin-2019/uautomizer/witness.graphml [2018-11-18 09:11:17,255 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:11:17,255 INFO L168 Benchmark]: Toolchain (without parser) took 23177.17 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 349.2 MB). Free memory was 953.2 MB in the beginning and 887.7 MB in the end (delta: 65.5 MB). Peak memory consumption was 414.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:11:17,256 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. [2018-11-18 09:11:17,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.50 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 09:11:17,256 INFO L168 Benchmark]: Boogie Preprocessor took 37.15 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:11:17,256 INFO L168 Benchmark]: RCFGBuilder took 355.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -197.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:11:17,256 INFO L168 Benchmark]: TraceAbstraction took 22503.05 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 187.2 MB). Free memory was 1.1 GB in the beginning and 887.7 MB in the end (delta: 247.0 MB). Peak memory consumption was 434.1 MB. Max. memory is 11.5 GB. [2018-11-18 09:11:17,257 INFO L168 Benchmark]: Witness Printer took 56.15 ms. Allocated memory is still 1.4 GB. Free memory is still 887.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:11:17,261 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 222.50 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.15 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 355.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -197.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 22503.05 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 187.2 MB). Free memory was 1.1 GB in the beginning and 887.7 MB in the end (delta: 247.0 MB). Peak memory consumption was 434.1 MB. Max. memory is 11.5 GB. * Witness Printer took 56.15 ms. Allocated memory is still 1.4 GB. Free memory is still 887.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 74]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 80]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 2 error locations. SAFE Result, 22.4s OverallTime, 31 OverallIterations, 6 TraceHistogramMax, 11.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 2092 SDtfs, 999 SDslu, 10870 SDs, 0 SdLazy, 4857 SolverSat, 239 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2538 GetRequests, 2194 SyntacticMatches, 8 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=19, 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: 0.1s AutomataMinimizationTime, 31 MinimizatonAttempts, 189 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 156 PreInvPairs, 178 NumberOfFragments, 161 HoareAnnotationTreeSize, 156 FomulaSimplifications, 869 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 19 FomulaSimplificationsInter, 104 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 1859 NumberOfCodeBlocks, 1859 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 2336 ConstructedInterpolants, 35 QuantifiedInterpolants, 443305 SizeOfPredicates, 147 NumberOfNonLiveVariables, 3908 ConjunctsInSsa, 310 ConjunctsInUnsatCore, 42 InterpolantComputations, 20 PerfectInterpolantSequences, 1085/1205 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...