./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 4284cb37841cd94fe17da64cc250a8a1e69c6375 ................................................................................................................................................................................................................................................................................................................................................................................................... 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_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 4284cb37841cd94fe17da64cc250a8a1e69c6375 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 10:33:25,085 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 10:33:25,087 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 10:33:25,094 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 10:33:25,095 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 10:33:25,095 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 10:33:25,096 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 10:33:25,097 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 10:33:25,099 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 10:33:25,099 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 10:33:25,100 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 10:33:25,100 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 10:33:25,101 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 10:33:25,101 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 10:33:25,102 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 10:33:25,102 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 10:33:25,103 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 10:33:25,104 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 10:33:25,105 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 10:33:25,106 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 10:33:25,106 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 10:33:25,107 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 10:33:25,109 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 10:33:25,109 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 10:33:25,109 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 10:33:25,110 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 10:33:25,110 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 10:33:25,110 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 10:33:25,111 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 10:33:25,111 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 10:33:25,111 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 10:33:25,112 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 10:33:25,112 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 10:33:25,112 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 10:33:25,112 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 10:33:25,113 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 10:33:25,113 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 10:33:25,120 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 10:33:25,120 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 10:33:25,121 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 10:33:25,121 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 10:33:25,122 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 10:33:25,122 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 10:33:25,122 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 10:33:25,122 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 10:33:25,122 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 10:33:25,122 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 10:33:25,123 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 10:33:25,123 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 10:33:25,123 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 10:33:25,123 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 10:33:25,123 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 10:33:25,123 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 10:33:25,123 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 10:33:25,124 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 10:33:25,124 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 10:33:25,124 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 10:33:25,124 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 10:33:25,124 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 10:33:25,124 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 10:33:25,125 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 10:33:25,125 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 10:33:25,125 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 10:33:25,125 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 10:33:25,125 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 10:33:25,125 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 10:33:25,126 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 10:33:25,126 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_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 -> 4284cb37841cd94fe17da64cc250a8a1e69c6375 [2018-11-28 10:33:25,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 10:33:25,158 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 10:33:25,160 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 10:33:25,161 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 10:33:25,161 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 10:33:25,161 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-11-28 10:33:25,198 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/data/4f4f1b4cf/8259d4b767e9446ab5d401a91db09fa7/FLAGfaec10418 [2018-11-28 10:33:25,591 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 10:33:25,591 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-11-28 10:33:25,596 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/data/4f4f1b4cf/8259d4b767e9446ab5d401a91db09fa7/FLAGfaec10418 [2018-11-28 10:33:25,607 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/data/4f4f1b4cf/8259d4b767e9446ab5d401a91db09fa7 [2018-11-28 10:33:25,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 10:33:25,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 10:33:25,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 10:33:25,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 10:33:25,613 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 10:33:25,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:33:25" (1/1) ... [2018-11-28 10:33:25,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d6c63ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:25, skipping insertion in model container [2018-11-28 10:33:25,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:33:25" (1/1) ... [2018-11-28 10:33:25,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 10:33:25,634 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 10:33:25,740 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:33:25,742 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 10:33:25,758 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:33:25,772 INFO L195 MainTranslator]: Completed translation [2018-11-28 10:33:25,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:25 WrapperNode [2018-11-28 10:33:25,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 10:33:25,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 10:33:25,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 10:33:25,773 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 10:33:25,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:25" (1/1) ... [2018-11-28 10:33:25,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:25" (1/1) ... [2018-11-28 10:33:25,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 10:33:25,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 10:33:25,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 10:33:25,828 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 10:33:25,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:25" (1/1) ... [2018-11-28 10:33:25,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:25" (1/1) ... [2018-11-28 10:33:25,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:25" (1/1) ... [2018-11-28 10:33:25,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:25" (1/1) ... [2018-11-28 10:33:25,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:25" (1/1) ... [2018-11-28 10:33:25,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:25" (1/1) ... [2018-11-28 10:33:25,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:25" (1/1) ... [2018-11-28 10:33:25,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 10:33:25,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 10:33:25,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 10:33:25,850 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 10:33:25,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 10:33:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-28 10:33:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-28 10:33:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 10:33:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 10:33:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-28 10:33:25,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-28 10:33:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 10:33:25,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 10:33:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 10:33:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 10:33:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 10:33:25,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 10:33:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-11-28 10:33:25,886 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-11-28 10:33:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 10:33:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 10:33:26,127 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 10:33:26,127 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 10:33:26,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:33:26 BoogieIcfgContainer [2018-11-28 10:33:26,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 10:33:26,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 10:33:26,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 10:33:26,131 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 10:33:26,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:33:25" (1/3) ... [2018-11-28 10:33:26,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c98dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:33:26, skipping insertion in model container [2018-11-28 10:33:26,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:25" (2/3) ... [2018-11-28 10:33:26,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c98dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:33:26, skipping insertion in model container [2018-11-28 10:33:26,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:33:26" (3/3) ... [2018-11-28 10:33:26,134 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a_true-unreach-call.c [2018-11-28 10:33:26,143 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 10:33:26,152 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 10:33:26,163 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 10:33:26,189 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 10:33:26,189 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 10:33:26,190 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 10:33:26,190 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 10:33:26,190 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 10:33:26,190 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 10:33:26,190 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 10:33:26,190 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 10:33:26,190 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 10:33:26,204 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-28 10:33:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 10:33:26,210 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:26,211 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:26,213 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:26,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:26,217 INFO L82 PathProgramCache]: Analyzing trace with hash 2125018936, now seen corresponding path program 1 times [2018-11-28 10:33:26,218 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:26,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:26,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:26,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:26,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:26,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:26,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 10:33:26,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 10:33:26,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 10:33:26,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 10:33:26,342 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-28 10:33:26,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:26,357 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-11-28 10:33:26,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 10:33:26,358 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-28 10:33:26,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:26,364 INFO L225 Difference]: With dead ends: 79 [2018-11-28 10:33:26,364 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 10:33:26,367 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 10:33:26,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 10:33:26,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-28 10:33:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 10:33:26,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 10:33:26,393 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-11-28 10:33:26,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:26,394 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 10:33:26,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 10:33:26,394 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 10:33:26,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 10:33:26,395 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:26,396 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:26,396 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:26,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:26,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2099930979, now seen corresponding path program 1 times [2018-11-28 10:33:26,396 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:26,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:26,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:26,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:26,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:26,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 10:33:26,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 10:33:26,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 10:33:26,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 10:33:26,469 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-28 10:33:26,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:26,491 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-11-28 10:33:26,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 10:33:26,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-28 10:33:26,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:26,493 INFO L225 Difference]: With dead ends: 59 [2018-11-28 10:33:26,493 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 10:33:26,494 INFO L631 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 [2018-11-28 10:33:26,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 10:33:26,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 10:33:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 10:33:26,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 10:33:26,500 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-11-28 10:33:26,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:26,500 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 10:33:26,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 10:33:26,500 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 10:33:26,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 10:33:26,501 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:26,501 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:26,501 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:26,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:26,502 INFO L82 PathProgramCache]: Analyzing trace with hash -2011933537, now seen corresponding path program 1 times [2018-11-28 10:33:26,502 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:26,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:26,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:26,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:26,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:26,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 10:33:26,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 10:33:26,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 10:33:26,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 10:33:26,563 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-11-28 10:33:26,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:26,596 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-11-28 10:33:26,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 10:33:26,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-28 10:33:26,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:26,597 INFO L225 Difference]: With dead ends: 63 [2018-11-28 10:33:26,598 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 10:33:26,598 INFO L631 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 [2018-11-28 10:33:26,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 10:33:26,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-28 10:33:26,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 10:33:26,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 10:33:26,604 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-11-28 10:33:26,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:26,604 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 10:33:26,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 10:33:26,605 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 10:33:26,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 10:33:26,605 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:26,605 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:26,606 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:26,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:26,606 INFO L82 PathProgramCache]: Analyzing trace with hash 486082400, now seen corresponding path program 1 times [2018-11-28 10:33:26,606 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:26,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:26,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:26,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:33:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:33:26,655 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 10:33:26,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:33:26 BoogieIcfgContainer [2018-11-28 10:33:26,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 10:33:26,682 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 10:33:26,682 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 10:33:26,682 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 10:33:26,682 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:33:26" (3/4) ... [2018-11-28 10:33:26,686 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 10:33:26,686 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 10:33:26,687 INFO L168 Benchmark]: Toolchain (without parser) took 1077.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 954.0 MB in the beginning and 1.1 GB in the end (delta: -125.0 MB). Peak memory consumption was 36.5 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:26,688 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:33:26,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.38 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 943.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:26,689 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 943.2 MB in the beginning and 1.2 GB in the end (delta: -213.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:26,689 INFO L168 Benchmark]: Boogie Preprocessor took 21.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:33:26,690 INFO L168 Benchmark]: RCFGBuilder took 278.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:26,690 INFO L168 Benchmark]: TraceAbstraction took 552.96 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: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:26,690 INFO L168 Benchmark]: Witness Printer took 4.22 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:26,693 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 162.38 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 943.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 943.2 MB in the beginning and 1.2 GB in the end (delta: -213.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 278.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 552.96 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: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.22 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 75. Possible FailurePath: [L74] double x = 0.0; [L75] double y = -0.0; VAL [x=0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=0, \old(y)=4293918727] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; VAL [\old(x)=0, \result=0, lsw=1, msw=4293918721, x=0] [L46] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4293918727, __fpclassify_double(x)=0, x=0, y=4293918727] [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; VAL [\old(x)=0, \old(y)=4293918727, \result=4293918727, x=0, y=4293918727] [L76] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4293918727, x=0, y=4293918727] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=4293918727, res == -0.0 && __signbit_double(res) == 1=0, x=0, y=4293918727] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=4293918727, x=0, y=4293918727] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-0cd3be1 [2018-11-28 10:33:28,179 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 10:33:28,180 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 10:33:28,187 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 10:33:28,187 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 10:33:28,188 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 10:33:28,189 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 10:33:28,190 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 10:33:28,191 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 10:33:28,192 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 10:33:28,192 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 10:33:28,193 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 10:33:28,193 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 10:33:28,194 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 10:33:28,194 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 10:33:28,195 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 10:33:28,195 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 10:33:28,197 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 10:33:28,198 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 10:33:28,199 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 10:33:28,200 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 10:33:28,201 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 10:33:28,203 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 10:33:28,203 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 10:33:28,203 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 10:33:28,204 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 10:33:28,205 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 10:33:28,205 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 10:33:28,206 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 10:33:28,207 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 10:33:28,207 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 10:33:28,207 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 10:33:28,207 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 10:33:28,208 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 10:33:28,208 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 10:33:28,209 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 10:33:28,209 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 10:33:28,220 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 10:33:28,220 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 10:33:28,221 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 10:33:28,221 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 10:33:28,222 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 10:33:28,222 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 10:33:28,222 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 10:33:28,222 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 10:33:28,222 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 10:33:28,222 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 10:33:28,223 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 10:33:28,223 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 10:33:28,223 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 10:33:28,223 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 10:33:28,223 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 10:33:28,223 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 10:33:28,223 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 10:33:28,224 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 10:33:28,224 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 10:33:28,224 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 10:33:28,224 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 10:33:28,224 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 10:33:28,224 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 10:33:28,224 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 10:33:28,225 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 10:33:28,225 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 10:33:28,225 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 10:33:28,225 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 10:33:28,225 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 10:33:28,225 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 10:33:28,226 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 10:33:28,226 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 10:33:28,226 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_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 -> 4284cb37841cd94fe17da64cc250a8a1e69c6375 [2018-11-28 10:33:28,253 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 10:33:28,263 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 10:33:28,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 10:33:28,268 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 10:33:28,268 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 10:33:28,269 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-11-28 10:33:28,319 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/data/f31585414/cca04c3077df4c82b527552df1209c7a/FLAG5490e0b9d [2018-11-28 10:33:28,646 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 10:33:28,646 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/sv-benchmarks/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-11-28 10:33:28,651 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/data/f31585414/cca04c3077df4c82b527552df1209c7a/FLAG5490e0b9d [2018-11-28 10:33:28,660 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/data/f31585414/cca04c3077df4c82b527552df1209c7a [2018-11-28 10:33:28,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 10:33:28,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 10:33:28,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 10:33:28,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 10:33:28,667 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 10:33:28,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:33:28" (1/1) ... [2018-11-28 10:33:28,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6304557e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:28, skipping insertion in model container [2018-11-28 10:33:28,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:33:28" (1/1) ... [2018-11-28 10:33:28,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 10:33:28,692 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 10:33:28,825 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:33:28,830 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 10:33:28,854 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:33:28,878 INFO L195 MainTranslator]: Completed translation [2018-11-28 10:33:28,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:28 WrapperNode [2018-11-28 10:33:28,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 10:33:28,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 10:33:28,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 10:33:28,880 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 10:33:28,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:28" (1/1) ... [2018-11-28 10:33:28,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:28" (1/1) ... [2018-11-28 10:33:28,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 10:33:28,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 10:33:28,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 10:33:28,904 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 10:33:28,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:28" (1/1) ... [2018-11-28 10:33:28,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:28" (1/1) ... [2018-11-28 10:33:28,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:28" (1/1) ... [2018-11-28 10:33:28,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:28" (1/1) ... [2018-11-28 10:33:28,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:28" (1/1) ... [2018-11-28 10:33:28,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:28" (1/1) ... [2018-11-28 10:33:28,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:28" (1/1) ... [2018-11-28 10:33:28,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 10:33:28,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 10:33:28,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 10:33:28,980 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 10:33:28,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 10:33:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-28 10:33:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-28 10:33:29,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-28 10:33:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 10:33:29,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 10:33:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-28 10:33:29,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-28 10:33:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 10:33:29,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 10:33:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 10:33:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 10:33:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 10:33:29,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 10:33:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-11-28 10:33:29,019 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-11-28 10:33:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 10:33:29,155 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 10:33:29,213 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 10:33:29,262 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 10:33:29,262 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 10:33:29,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:33:29 BoogieIcfgContainer [2018-11-28 10:33:29,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 10:33:29,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 10:33:29,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 10:33:29,266 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 10:33:29,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:33:28" (1/3) ... [2018-11-28 10:33:29,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168a7d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:33:29, skipping insertion in model container [2018-11-28 10:33:29,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:28" (2/3) ... [2018-11-28 10:33:29,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168a7d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:33:29, skipping insertion in model container [2018-11-28 10:33:29,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:33:29" (3/3) ... [2018-11-28 10:33:29,268 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a_true-unreach-call.c [2018-11-28 10:33:29,274 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 10:33:29,280 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 10:33:29,289 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 10:33:29,308 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 10:33:29,308 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 10:33:29,308 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 10:33:29,308 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 10:33:29,308 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 10:33:29,309 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 10:33:29,309 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 10:33:29,309 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 10:33:29,309 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 10:33:29,319 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-28 10:33:29,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 10:33:29,323 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:29,324 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:29,325 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:29,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:29,329 INFO L82 PathProgramCache]: Analyzing trace with hash -397395125, now seen corresponding path program 1 times [2018-11-28 10:33:29,332 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 10:33:29,332 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 [2018-11-28 10:33:29,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:29,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:29,401 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 10:33:29,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:29,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 10:33:29,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 10:33:29,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 10:33:29,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 10:33:29,421 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-28 10:33:29,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:29,437 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-11-28 10:33:29,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 10:33:29,438 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-28 10:33:29,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:29,445 INFO L225 Difference]: With dead ends: 75 [2018-11-28 10:33:29,445 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 10:33:29,448 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 10:33:29,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 10:33:29,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-28 10:33:29,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 10:33:29,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-28 10:33:29,476 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-28 10:33:29,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:29,477 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-28 10:33:29,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 10:33:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-28 10:33:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 10:33:29,479 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:29,479 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:29,479 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:29,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:29,479 INFO L82 PathProgramCache]: Analyzing trace with hash -2145002868, now seen corresponding path program 1 times [2018-11-28 10:33:29,480 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 10:33:29,480 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 [2018-11-28 10:33:29,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:29,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:29,566 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 10:33:29,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:29,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 10:33:29,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 10:33:29,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 10:33:29,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 10:33:29,576 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-28 10:33:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:29,644 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-28 10:33:29,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 10:33:29,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-28 10:33:29,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:29,646 INFO L225 Difference]: With dead ends: 56 [2018-11-28 10:33:29,646 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 10:33:29,647 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 10:33:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 10:33:29,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 10:33:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 10:33:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-11-28 10:33:29,653 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-11-28 10:33:29,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:29,653 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-28 10:33:29,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 10:33:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-11-28 10:33:29,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 10:33:29,654 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:29,654 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:29,654 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:29,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:29,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1859452024, now seen corresponding path program 1 times [2018-11-28 10:33:29,655 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 10:33:29,655 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 [2018-11-28 10:33:29,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:29,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:29,900 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 10:33:29,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:29,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 10:33:29,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 10:33:29,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 10:33:29,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 10:33:29,908 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-11-28 10:33:31,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:31,010 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2018-11-28 10:33:31,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 10:33:31,011 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-28 10:33:31,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:31,013 INFO L225 Difference]: With dead ends: 63 [2018-11-28 10:33:31,013 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 10:33:31,013 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 10:33:31,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 10:33:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 10:33:31,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 10:33:31,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-11-28 10:33:31,018 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 23 [2018-11-28 10:33:31,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:31,019 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-11-28 10:33:31,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 10:33:31,019 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-11-28 10:33:31,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 10:33:31,020 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:31,020 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:31,020 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:31,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:31,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1911602824, now seen corresponding path program 1 times [2018-11-28 10:33:31,021 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 10:33:31,021 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 [2018-11-28 10:33:31,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:31,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:31,074 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 10:33:31,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:31,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 10:33:31,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 10:33:31,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 10:33:31,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 10:33:31,087 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2018-11-28 10:33:31,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:31,125 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-11-28 10:33:31,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 10:33:31,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-28 10:33:31,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:31,127 INFO L225 Difference]: With dead ends: 61 [2018-11-28 10:33:31,127 INFO L226 Difference]: Without dead ends: 46 [2018-11-28 10:33:31,127 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 10:33:31,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-28 10:33:31,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-11-28 10:33:31,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 10:33:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-11-28 10:33:31,134 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 24 [2018-11-28 10:33:31,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:31,134 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-11-28 10:33:31,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 10:33:31,134 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-11-28 10:33:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 10:33:31,135 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:31,135 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:31,135 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:31,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:31,136 INFO L82 PathProgramCache]: Analyzing trace with hash 2064132100, now seen corresponding path program 1 times [2018-11-28 10:33:31,136 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 10:33:31,136 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 [2018-11-28 10:33:31,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:31,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:31,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:31,293 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 10:33:31,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:31,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 10:33:31,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 10:33:31,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 10:33:31,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 10:33:31,305 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-11-28 10:33:34,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:34,175 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-11-28 10:33:34,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 10:33:34,177 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-11-28 10:33:34,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:34,177 INFO L225 Difference]: With dead ends: 62 [2018-11-28 10:33:34,177 INFO L226 Difference]: Without dead ends: 42 [2018-11-28 10:33:34,178 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 10:33:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-28 10:33:34,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-11-28 10:33:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 10:33:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-28 10:33:34,182 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2018-11-28 10:33:34,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:34,182 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-28 10:33:34,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 10:33:34,182 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-28 10:33:34,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 10:33:34,183 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:34,183 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:34,183 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:34,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:34,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1438845801, now seen corresponding path program 1 times [2018-11-28 10:33:34,184 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 10:33:34,184 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 [2018-11-28 10:33:34,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:34,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:34,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 10:33:34,252 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 10:33:34,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:34,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 10:33:34,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 10:33:34,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 10:33:34,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 10:33:34,260 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-11-28 10:33:34,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:34,272 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-11-28 10:33:34,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 10:33:34,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-28 10:33:34,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:34,273 INFO L225 Difference]: With dead ends: 58 [2018-11-28 10:33:34,273 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 10:33:34,273 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 10:33:34,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 10:33:34,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 10:33:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 10:33:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-11-28 10:33:34,277 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 30 [2018-11-28 10:33:34,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:34,277 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-11-28 10:33:34,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 10:33:34,278 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-11-28 10:33:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 10:33:34,278 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:34,278 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:34,279 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:34,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:34,279 INFO L82 PathProgramCache]: Analyzing trace with hash 394703345, now seen corresponding path program 1 times [2018-11-28 10:33:34,279 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 10:33:34,279 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 [2018-11-28 10:33:34,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:34,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 10:33:34,474 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 10:33:34,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:34,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 10:33:34,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 10:33:34,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 10:33:34,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 10:33:34,483 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 8 states. [2018-11-28 10:33:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:35,518 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-11-28 10:33:35,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 10:33:35,519 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-28 10:33:35,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:35,520 INFO L225 Difference]: With dead ends: 63 [2018-11-28 10:33:35,520 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 10:33:35,520 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 10:33:35,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 10:33:35,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 10:33:35,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 10:33:35,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-11-28 10:33:35,525 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 31 [2018-11-28 10:33:35,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:35,525 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-11-28 10:33:35,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 10:33:35,525 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-11-28 10:33:35,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 10:33:35,526 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:35,526 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:35,526 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:35,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:35,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1599971557, now seen corresponding path program 1 times [2018-11-28 10:33:35,527 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 10:33:35,527 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 [2018-11-28 10:33:35,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:35,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 10:33:35,609 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 10:33:35,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:35,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 10:33:35,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 10:33:35,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 10:33:35,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 10:33:35,617 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 4 states. [2018-11-28 10:33:35,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:35,627 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-11-28 10:33:35,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 10:33:35,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-11-28 10:33:35,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:35,628 INFO L225 Difference]: With dead ends: 59 [2018-11-28 10:33:35,628 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 10:33:35,629 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 10:33:35,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 10:33:35,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-11-28 10:33:35,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 10:33:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-11-28 10:33:35,632 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 32 [2018-11-28 10:33:35,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:35,632 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-11-28 10:33:35,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 10:33:35,632 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-11-28 10:33:35,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 10:33:35,633 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:35,633 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:35,633 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:35,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:35,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1200719566, now seen corresponding path program 1 times [2018-11-28 10:33:35,634 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 10:33:35,634 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 [2018-11-28 10:33:35,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:35,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:35,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 10:33:35,819 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 10:33:35,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:35,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 10:33:35,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 10:33:35,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 10:33:35,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 10:33:35,828 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2018-11-28 10:33:35,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:35,923 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2018-11-28 10:33:35,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 10:33:35,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-28 10:33:35,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:35,924 INFO L225 Difference]: With dead ends: 57 [2018-11-28 10:33:35,924 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 10:33:35,924 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 10:33:35,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 10:33:35,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 10:33:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 10:33:35,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-11-28 10:33:35,928 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 32 [2018-11-28 10:33:35,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:35,929 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-11-28 10:33:35,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 10:33:35,929 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-11-28 10:33:35,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 10:33:35,930 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:35,930 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:35,930 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:35,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:35,930 INFO L82 PathProgramCache]: Analyzing trace with hash 391372940, now seen corresponding path program 1 times [2018-11-28 10:33:35,931 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 10:33:35,931 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 [2018-11-28 10:33:35,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:35,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 10:33:36,060 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 10:33:36,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:36,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 10:33:36,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 10:33:36,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 10:33:36,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 10:33:36,069 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2018-11-28 10:33:36,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:36,433 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2018-11-28 10:33:36,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 10:33:36,434 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-28 10:33:36,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:36,434 INFO L225 Difference]: With dead ends: 48 [2018-11-28 10:33:36,434 INFO L226 Difference]: Without dead ends: 45 [2018-11-28 10:33:36,435 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-28 10:33:36,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-28 10:33:36,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-28 10:33:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-28 10:33:36,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-11-28 10:33:36,438 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2018-11-28 10:33:36,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:36,438 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-11-28 10:33:36,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 10:33:36,438 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-11-28 10:33:36,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 10:33:36,439 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:36,439 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:36,439 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:36,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:36,440 INFO L82 PathProgramCache]: Analyzing trace with hash -477473555, now seen corresponding path program 1 times [2018-11-28 10:33:36,440 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 10:33:36,440 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 [2018-11-28 10:33:36,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:36,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 10:33:36,651 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 10:33:36,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:36,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 10:33:36,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 10:33:36,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 10:33:36,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 10:33:36,664 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-11-28 10:33:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:37,347 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2018-11-28 10:33:37,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 10:33:37,348 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-11-28 10:33:37,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:37,349 INFO L225 Difference]: With dead ends: 62 [2018-11-28 10:33:37,349 INFO L226 Difference]: Without dead ends: 37 [2018-11-28 10:33:37,350 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 10:33:37,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-28 10:33:37,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-28 10:33:37,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 10:33:37,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-11-28 10:33:37,352 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2018-11-28 10:33:37,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:37,353 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-11-28 10:33:37,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 10:33:37,353 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-11-28 10:33:37,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-28 10:33:37,353 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:37,353 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:37,354 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:37,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:37,354 INFO L82 PathProgramCache]: Analyzing trace with hash -25386389, now seen corresponding path program 1 times [2018-11-28 10:33:37,354 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 10:33:37,354 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/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 [2018-11-28 10:33:37,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:37,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:33:37,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 10:33:37,614 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 10:33:37,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:37,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-11-28 10:33:37,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 10:33:37,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 10:33:37,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-28 10:33:37,623 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 13 states. [2018-11-28 10:33:38,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:38,433 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-11-28 10:33:38,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 10:33:38,433 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-11-28 10:33:38,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:38,434 INFO L225 Difference]: With dead ends: 37 [2018-11-28 10:33:38,434 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 10:33:38,434 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2018-11-28 10:33:38,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 10:33:38,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 10:33:38,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 10:33:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 10:33:38,434 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-11-28 10:33:38,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:38,435 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 10:33:38,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 10:33:38,435 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 10:33:38,435 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 10:33:38,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 10:33:38,671 INFO L448 ceAbstractionStarter]: For program point L31(lines 31 42) no Hoare annotation was computed. [2018-11-28 10:33:38,671 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 18 43) no Hoare annotation was computed. [2018-11-28 10:33:38,671 INFO L448 ceAbstractionStarter]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2018-11-28 10:33:38,671 INFO L444 ceAbstractionStarter]: At program point L21-2(lines 21 26) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2018-11-28 10:33:38,672 INFO L448 ceAbstractionStarter]: For program point L21-3(lines 18 43) no Hoare annotation was computed. [2018-11-28 10:33:38,672 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 18 43) the Hoare annotation is: true [2018-11-28 10:33:38,672 INFO L448 ceAbstractionStarter]: For program point L38(lines 38 42) no Hoare annotation was computed. [2018-11-28 10:33:38,672 INFO L448 ceAbstractionStarter]: For program point L34(lines 34 42) no Hoare annotation was computed. [2018-11-28 10:33:38,672 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 18 43) no Hoare annotation was computed. [2018-11-28 10:33:38,672 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 10:33:38,672 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 10:33:38,672 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 10:33:38,672 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleFINAL(lines 54 64) no Hoare annotation was computed. [2018-11-28 10:33:38,672 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 57 61) no Hoare annotation was computed. [2018-11-28 10:33:38,672 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleEXIT(lines 54 64) no Hoare annotation was computed. [2018-11-28 10:33:38,672 INFO L444 ceAbstractionStarter]: At program point L57-2(lines 57 61) the Hoare annotation is: (= |__signbit_double_#in~x| __signbit_double_~x) [2018-11-28 10:33:38,672 INFO L448 ceAbstractionStarter]: For program point L57-3(lines 57 61) no Hoare annotation was computed. [2018-11-28 10:33:38,672 INFO L451 ceAbstractionStarter]: At program point __signbit_doubleENTRY(lines 54 64) the Hoare annotation is: true [2018-11-28 10:33:38,672 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 10:33:38,672 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 10:33:38,672 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 10:33:38,672 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 10:33:38,672 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 66 85) the Hoare annotation is: true [2018-11-28 10:33:38,672 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 66 85) no Hoare annotation was computed. [2018-11-28 10:33:38,672 INFO L448 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-11-28 10:33:38,672 INFO L448 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-11-28 10:33:38,673 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-11-28 10:33:38,673 INFO L444 ceAbstractionStarter]: At program point L79-1(line 79) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= main_~res~0 .cse0) (= (_ +zero 11 53) main_~x~0) |main_#t~short11| (= main_~y~0 .cse0))) [2018-11-28 10:33:38,673 INFO L448 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-11-28 10:33:38,673 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 66 85) no Hoare annotation was computed. [2018-11-28 10:33:38,673 INFO L444 ceAbstractionStarter]: At program point L76(line 76) the Hoare annotation is: (and (= (_ +zero 11 53) main_~x~0) (= main_~y~0 (fp.neg (_ +zero 11 53)))) [2018-11-28 10:33:38,673 INFO L448 ceAbstractionStarter]: For program point L76-1(line 76) no Hoare annotation was computed. [2018-11-28 10:33:38,673 INFO L448 ceAbstractionStarter]: For program point L79-4(lines 79 82) no Hoare annotation was computed. [2018-11-28 10:33:38,673 INFO L448 ceAbstractionStarter]: For program point fmin_doubleFINAL(lines 45 52) no Hoare annotation was computed. [2018-11-28 10:33:38,673 INFO L451 ceAbstractionStarter]: At program point fmin_doubleENTRY(lines 45 52) the Hoare annotation is: true [2018-11-28 10:33:38,673 INFO L448 ceAbstractionStarter]: For program point fmin_doubleEXIT(lines 45 52) no Hoare annotation was computed. [2018-11-28 10:33:38,673 INFO L448 ceAbstractionStarter]: For program point L51(line 51) no Hoare annotation was computed. [2018-11-28 10:33:38,673 INFO L448 ceAbstractionStarter]: For program point L51-2(line 51) no Hoare annotation was computed. [2018-11-28 10:33:38,673 INFO L444 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (= fmin_double_~x |fmin_double_#in~x|))) (or (and (exists ((v_prenex_10 (_ BitVec 64))) (and (not (bvule ((_ extract 63 32) v_prenex_10) (_ bv1048575 32))) (= |fmin_double_#in~x| (fp ((_ extract 63 63) v_prenex_10) ((_ extract 62 52) v_prenex_10) ((_ extract 51 0) v_prenex_10))))) .cse0) (and (= fmin_double_~y |fmin_double_#in~y|) .cse0))) [2018-11-28 10:33:38,673 INFO L448 ceAbstractionStarter]: For program point L48-1(lines 48 49) no Hoare annotation was computed. [2018-11-28 10:33:38,673 INFO L444 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-11-28 10:33:38,673 INFO L448 ceAbstractionStarter]: For program point L46-1(lines 46 47) no Hoare annotation was computed. [2018-11-28 10:33:38,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:33:38 BoogieIcfgContainer [2018-11-28 10:33:38,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 10:33:38,681 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 10:33:38,681 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 10:33:38,681 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 10:33:38,682 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:33:29" (3/4) ... [2018-11-28 10:33:38,684 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 10:33:38,688 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-11-28 10:33:38,689 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 10:33:38,689 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-11-28 10:33:38,689 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 10:33:38,689 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_double [2018-11-28 10:33:38,693 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2018-11-28 10:33:38,693 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-28 10:33:38,693 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 10:33:38,709 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-28 10:33:38,710 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-28 10:33:38,726 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1f74cdd4-6ce1-4793-8d5f-cb0e70004fd8/bin-2019/uautomizer/witness.graphml [2018-11-28 10:33:38,727 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 10:33:38,727 INFO L168 Benchmark]: Toolchain (without parser) took 10064.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 203.4 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -121.5 MB). Peak memory consumption was 82.0 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:38,728 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:33:38,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.03 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:38,729 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.87 ms. Allocated memory is still 1.0 GB. Free memory is still 927.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:33:38,729 INFO L168 Benchmark]: Boogie Preprocessor took 76.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -209.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:38,729 INFO L168 Benchmark]: RCFGBuilder took 283.03 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:38,730 INFO L168 Benchmark]: TraceAbstraction took 9417.35 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.5 MB). Peak memory consumption was 101.4 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:38,730 INFO L168 Benchmark]: Witness Printer took 45.51 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: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:38,731 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 215.03 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.87 ms. Allocated memory is still 1.0 GB. Free memory is still 927.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 76.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -209.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 283.03 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9417.35 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.5 MB). Peak memory consumption was 101.4 MB. Max. memory is 11.5 GB. * Witness Printer took 45.51 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: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. SAFE Result, 9.3s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 7.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 479 SDtfs, 187 SDslu, 1586 SDs, 0 SdLazy, 605 SolverSat, 20 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, 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, 12 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 41 PreInvPairs, 50 NumberOfFragments, 69 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 333 ConstructedInterpolants, 40 QuantifiedInterpolants, 43044 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1082 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...