./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 01b6390e563edc58f3f7d1f239b082df891f9006 ....................................................................................................................................................................................................................................................................................................................................................................................................... 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_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 01b6390e563edc58f3f7d1f239b082df891f9006 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 11:48:41,351 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 11:48:41,352 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 11:48:41,358 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 11:48:41,358 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 11:48:41,359 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 11:48:41,359 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 11:48:41,360 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 11:48:41,361 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 11:48:41,362 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 11:48:41,362 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 11:48:41,362 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 11:48:41,363 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 11:48:41,363 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 11:48:41,364 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 11:48:41,364 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 11:48:41,365 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 11:48:41,366 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 11:48:41,367 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 11:48:41,368 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 11:48:41,368 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 11:48:41,369 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 11:48:41,370 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 11:48:41,370 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 11:48:41,370 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 11:48:41,371 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 11:48:41,372 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 11:48:41,372 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 11:48:41,372 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 11:48:41,373 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 11:48:41,373 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 11:48:41,374 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 11:48:41,374 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 11:48:41,374 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 11:48:41,375 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 11:48:41,375 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 11:48:41,375 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-09 11:48:41,383 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 11:48:41,383 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 11:48:41,383 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 11:48:41,383 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 11:48:41,384 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 11:48:41,384 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 11:48:41,384 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 11:48:41,384 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 11:48:41,384 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 11:48:41,384 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 11:48:41,385 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 11:48:41,385 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 11:48:41,385 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 11:48:41,385 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 11:48:41,385 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 11:48:41,385 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 11:48:41,385 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 11:48:41,385 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 11:48:41,386 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 11:48:41,386 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 11:48:41,386 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 11:48:41,386 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 11:48:41,386 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 11:48:41,386 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 11:48:41,386 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 11:48:41,387 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 11:48:41,387 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 11:48:41,387 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 11:48:41,387 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 11:48:41,387 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 11:48:41,387 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_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 -> 01b6390e563edc58f3f7d1f239b082df891f9006 [2018-12-09 11:48:41,404 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 11:48:41,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 11:48:41,413 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 11:48:41,414 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 11:48:41,414 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 11:48:41,415 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-12-09 11:48:41,451 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/data/732ba636a/c994e4a6fcbb4063a5dd1d6e9c74fb9f/FLAG4db13edd4 [2018-12-09 11:48:41,773 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 11:48:41,774 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-12-09 11:48:41,777 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/data/732ba636a/c994e4a6fcbb4063a5dd1d6e9c74fb9f/FLAG4db13edd4 [2018-12-09 11:48:41,786 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/data/732ba636a/c994e4a6fcbb4063a5dd1d6e9c74fb9f [2018-12-09 11:48:41,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 11:48:41,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 11:48:41,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 11:48:41,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 11:48:41,791 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 11:48:41,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:48:41" (1/1) ... [2018-12-09 11:48:41,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f49b694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:41, skipping insertion in model container [2018-12-09 11:48:41,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:48:41" (1/1) ... [2018-12-09 11:48:41,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 11:48:41,807 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 11:48:41,899 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:48:41,901 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 11:48:41,915 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:48:41,928 INFO L195 MainTranslator]: Completed translation [2018-12-09 11:48:41,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:41 WrapperNode [2018-12-09 11:48:41,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 11:48:41,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 11:48:41,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 11:48:41,928 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 11:48:41,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:41" (1/1) ... [2018-12-09 11:48:41,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:41" (1/1) ... [2018-12-09 11:48:41,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 11:48:41,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 11:48:41,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 11:48:41,943 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 11:48:41,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:41" (1/1) ... [2018-12-09 11:48:41,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:41" (1/1) ... [2018-12-09 11:48:41,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:41" (1/1) ... [2018-12-09 11:48:41,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:41" (1/1) ... [2018-12-09 11:48:41,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:41" (1/1) ... [2018-12-09 11:48:41,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:41" (1/1) ... [2018-12-09 11:48:41,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:41" (1/1) ... [2018-12-09 11:48:41,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 11:48:41,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 11:48:41,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 11:48:41,987 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 11:48:41,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 11:48:42,017 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-09 11:48:42,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-09 11:48:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 11:48:42,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 11:48:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 11:48:42,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 11:48:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 11:48:42,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 11:48:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-12-09 11:48:42,018 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-12-09 11:48:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 11:48:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 11:48:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 11:48:42,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 11:48:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 11:48:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 11:48:42,149 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 11:48:42,149 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 11:48:42,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:48:42 BoogieIcfgContainer [2018-12-09 11:48:42,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 11:48:42,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 11:48:42,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 11:48:42,152 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 11:48:42,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:48:41" (1/3) ... [2018-12-09 11:48:42,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53febb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:48:42, skipping insertion in model container [2018-12-09 11:48:42,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:41" (2/3) ... [2018-12-09 11:48:42,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53febb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:48:42, skipping insertion in model container [2018-12-09 11:48:42,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:48:42" (3/3) ... [2018-12-09 11:48:42,154 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250_true-unreach-call.c [2018-12-09 11:48:42,160 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 11:48:42,164 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 11:48:42,173 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 11:48:42,189 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 11:48:42,189 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 11:48:42,189 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 11:48:42,190 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 11:48:42,190 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 11:48:42,190 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 11:48:42,190 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 11:48:42,190 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 11:48:42,190 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 11:48:42,199 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-12-09 11:48:42,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 11:48:42,203 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:42,204 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] [2018-12-09 11:48:42,205 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:42,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:42,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1777529962, now seen corresponding path program 1 times [2018-12-09 11:48:42,209 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:48:42,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:48:42,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:48:42,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:42,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:48:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:48:42,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:42,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 11:48:42,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 11:48:42,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 11:48:42,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 11:48:42,296 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-12-09 11:48:42,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:42,309 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-12-09 11:48:42,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 11:48:42,310 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-12-09 11:48:42,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:42,315 INFO L225 Difference]: With dead ends: 71 [2018-12-09 11:48:42,315 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 11:48:42,317 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 11:48:42,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 11:48:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 11:48:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 11:48:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-09 11:48:42,340 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-12-09 11:48:42,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:42,341 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-09 11:48:42,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 11:48:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-09 11:48:42,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 11:48:42,342 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:42,342 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, 1] [2018-12-09 11:48:42,342 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:42,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:42,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1782564235, now seen corresponding path program 1 times [2018-12-09 11:48:42,342 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:48:42,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:48:42,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:48:42,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:42,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:48:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:48:42,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:42,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:48:42,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:48:42,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:48:42,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:42,396 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-09 11:48:42,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:42,421 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-12-09 11:48:42,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:48:42,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-09 11:48:42,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:42,423 INFO L225 Difference]: With dead ends: 51 [2018-12-09 11:48:42,423 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 11:48:42,423 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 [2018-12-09 11:48:42,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 11:48:42,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-09 11:48:42,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 11:48:42,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 11:48:42,428 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-12-09 11:48:42,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:42,428 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 11:48:42,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:48:42,428 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 11:48:42,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 11:48:42,429 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:42,429 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, 1, 1, 1, 1] [2018-12-09 11:48:42,429 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:42,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:42,430 INFO L82 PathProgramCache]: Analyzing trace with hash 105963089, now seen corresponding path program 1 times [2018-12-09 11:48:42,430 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:48:42,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:48:42,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:48:42,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:42,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:48:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:48:42,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:42,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:48:42,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:48:42,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:48:42,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:42,465 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-09 11:48:42,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:42,481 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-12-09 11:48:42,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:48:42,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-09 11:48:42,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:42,482 INFO L225 Difference]: With dead ends: 55 [2018-12-09 11:48:42,482 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 11:48:42,482 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 [2018-12-09 11:48:42,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 11:48:42,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-12-09 11:48:42,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 11:48:42,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 11:48:42,486 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-12-09 11:48:42,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:42,486 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 11:48:42,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:48:42,486 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 11:48:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 11:48:42,487 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:42,487 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, 1, 1, 1, 1] [2018-12-09 11:48:42,487 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:42,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:42,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1613514898, now seen corresponding path program 1 times [2018-12-09 11:48:42,487 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 11:48:42,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 11:48:42,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:48:42,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:42,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 11:48:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:48:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 11:48:42,528 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 11:48:42,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:48:42 BoogieIcfgContainer [2018-12-09 11:48:42,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 11:48:42,549 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 11:48:42,549 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 11:48:42,549 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 11:48:42,550 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:48:42" (3/4) ... [2018-12-09 11:48:42,552 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 11:48:42,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 11:48:42,552 INFO L168 Benchmark]: Toolchain (without parser) took 764.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 962.4 MB in the beginning and 1.0 GB in the end (delta: -83.6 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. [2018-12-09 11:48:42,553 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:48:42,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.55 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-09 11:48:42,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.96 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 945.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 11:48:42,554 INFO L168 Benchmark]: Boogie Preprocessor took 44.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -168.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-09 11:48:42,554 INFO L168 Benchmark]: RCFGBuilder took 162.51 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-09 11:48:42,555 INFO L168 Benchmark]: TraceAbstraction took 399.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. [2018-12-09 11:48:42,555 INFO L168 Benchmark]: Witness Printer took 2.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:48:42,557 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 139.55 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.96 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 945.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -168.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 162.51 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 399.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L69] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4294967302, \old(y)=4294967303] [L55] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302] [L27] __uint32_t msw, lsw; VAL [\old(x)=4294967302, x=4294967302] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; VAL [\old(x)=4294967302, \result=0, lsw=4294967297, msw=4293918721, x=4294967302] [L55] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302, \old(y)=4294967303, __fpclassify_double(x)=0, x=4294967302, y=4294967303] [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; VAL [\old(x)=4294967302, \old(y)=4294967303, \result=4294967303, x=4294967302, y=4294967303] [L69] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4294967303, x=4294967302, y=4294967303] [L69] double res = fmax_double(x, y); [L71] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967303] [L16] return x != x; VAL [\old(x)=4294967303, \result=0, x=4294967303] [L71] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967303, x=4294967302, y=4294967303] [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() VAL [res=4294967303, x=4294967302, y=4294967303] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 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=40occurred 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, 0.0s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 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 0.1.23-635dfa2 [2018-12-09 11:48:43,899 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 11:48:43,900 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 11:48:43,906 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 11:48:43,906 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 11:48:43,907 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 11:48:43,908 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 11:48:43,908 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 11:48:43,909 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 11:48:43,910 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 11:48:43,910 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 11:48:43,910 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 11:48:43,911 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 11:48:43,911 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 11:48:43,911 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 11:48:43,912 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 11:48:43,912 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 11:48:43,913 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 11:48:43,914 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 11:48:43,915 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 11:48:43,915 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 11:48:43,916 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 11:48:43,917 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 11:48:43,917 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 11:48:43,917 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 11:48:43,918 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 11:48:43,918 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 11:48:43,918 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 11:48:43,919 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 11:48:43,919 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 11:48:43,919 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 11:48:43,920 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 11:48:43,920 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 11:48:43,920 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 11:48:43,920 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 11:48:43,921 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 11:48:43,921 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-09 11:48:43,928 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 11:48:43,928 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 11:48:43,928 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 11:48:43,929 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 11:48:43,929 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 11:48:43,929 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 11:48:43,929 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 11:48:43,929 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 11:48:43,929 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 11:48:43,929 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 11:48:43,929 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 11:48:43,930 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 11:48:43,930 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 11:48:43,930 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 11:48:43,930 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 11:48:43,930 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 11:48:43,930 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 11:48:43,930 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 11:48:43,930 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 11:48:43,930 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 11:48:43,930 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 11:48:43,930 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 11:48:43,931 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 11:48:43,931 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 11:48:43,931 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 11:48:43,931 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 11:48:43,931 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 11:48:43,931 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 11:48:43,931 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-09 11:48:43,931 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 11:48:43,931 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 11:48:43,931 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 11:48:43,931 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_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 -> 01b6390e563edc58f3f7d1f239b082df891f9006 [2018-12-09 11:48:43,949 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 11:48:43,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 11:48:43,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 11:48:43,959 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 11:48:43,959 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 11:48:43,959 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-12-09 11:48:43,993 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/data/d2f16550f/d38736698d944a2580c6227873d402c6/FLAGdd142ab6f [2018-12-09 11:48:44,439 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 11:48:44,439 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/sv-benchmarks/c/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-12-09 11:48:44,443 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/data/d2f16550f/d38736698d944a2580c6227873d402c6/FLAGdd142ab6f [2018-12-09 11:48:44,451 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/data/d2f16550f/d38736698d944a2580c6227873d402c6 [2018-12-09 11:48:44,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 11:48:44,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 11:48:44,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 11:48:44,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 11:48:44,457 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 11:48:44,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:48:44" (1/1) ... [2018-12-09 11:48:44,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4660ccfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:44, skipping insertion in model container [2018-12-09 11:48:44,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:48:44" (1/1) ... [2018-12-09 11:48:44,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 11:48:44,479 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 11:48:44,576 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:48:44,579 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 11:48:44,595 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 11:48:44,616 INFO L195 MainTranslator]: Completed translation [2018-12-09 11:48:44,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:44 WrapperNode [2018-12-09 11:48:44,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 11:48:44,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 11:48:44,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 11:48:44,617 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 11:48:44,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:44" (1/1) ... [2018-12-09 11:48:44,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:44" (1/1) ... [2018-12-09 11:48:44,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 11:48:44,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 11:48:44,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 11:48:44,632 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 11:48:44,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:44" (1/1) ... [2018-12-09 11:48:44,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:44" (1/1) ... [2018-12-09 11:48:44,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:44" (1/1) ... [2018-12-09 11:48:44,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:44" (1/1) ... [2018-12-09 11:48:44,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:44" (1/1) ... [2018-12-09 11:48:44,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:44" (1/1) ... [2018-12-09 11:48:44,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:44" (1/1) ... [2018-12-09 11:48:44,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 11:48:44,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 11:48:44,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 11:48:44,651 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 11:48:44,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 11:48:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-09 11:48:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-09 11:48:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-09 11:48:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 11:48:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 11:48:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 11:48:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 11:48:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 11:48:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 11:48:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-12-09 11:48:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-12-09 11:48:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 11:48:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 11:48:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 11:48:44,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 11:48:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 11:48:44,822 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 11:48:44,873 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 11:48:44,873 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 11:48:44,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:48:44 BoogieIcfgContainer [2018-12-09 11:48:44,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 11:48:44,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 11:48:44,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 11:48:44,876 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 11:48:44,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:48:44" (1/3) ... [2018-12-09 11:48:44,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bffec67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:48:44, skipping insertion in model container [2018-12-09 11:48:44,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:48:44" (2/3) ... [2018-12-09 11:48:44,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bffec67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:48:44, skipping insertion in model container [2018-12-09 11:48:44,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:48:44" (3/3) ... [2018-12-09 11:48:44,878 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250_true-unreach-call.c [2018-12-09 11:48:44,883 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 11:48:44,887 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 11:48:44,896 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 11:48:44,912 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 11:48:44,912 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 11:48:44,912 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 11:48:44,912 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 11:48:44,912 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 11:48:44,912 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 11:48:44,912 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 11:48:44,913 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 11:48:44,913 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 11:48:44,922 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-12-09 11:48:44,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 11:48:44,925 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:44,926 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] [2018-12-09 11:48:44,927 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:44,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:44,931 INFO L82 PathProgramCache]: Analyzing trace with hash 656433164, now seen corresponding path program 1 times [2018-12-09 11:48:44,934 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 11:48:44,934 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 [2018-12-09 11:48:44,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:44,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:48:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:48:44,994 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:48:45,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:45,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 11:48:45,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 11:48:45,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 11:48:45,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 11:48:45,014 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-12-09 11:48:45,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:45,027 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-12-09 11:48:45,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 11:48:45,027 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-12-09 11:48:45,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:45,033 INFO L225 Difference]: With dead ends: 65 [2018-12-09 11:48:45,033 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 11:48:45,035 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 11:48:45,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 11:48:45,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-09 11:48:45,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 11:48:45,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-12-09 11:48:45,059 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-12-09 11:48:45,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:45,059 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-12-09 11:48:45,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 11:48:45,059 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-12-09 11:48:45,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 11:48:45,060 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:45,060 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] [2018-12-09 11:48:45,060 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:45,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:45,061 INFO L82 PathProgramCache]: Analyzing trace with hash 123034921, now seen corresponding path program 1 times [2018-12-09 11:48:45,061 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 11:48:45,061 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 [2018-12-09 11:48:45,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:45,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:48:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:48:45,132 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:48:45,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:45,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:48:45,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:48:45,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:48:45,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:45,145 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-12-09 11:48:45,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:45,176 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-12-09 11:48:45,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:48:45,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-09 11:48:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:45,179 INFO L225 Difference]: With dead ends: 46 [2018-12-09 11:48:45,179 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 11:48:45,179 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:45,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 11:48:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 11:48:45,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 11:48:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 11:48:45,186 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-12-09 11:48:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:45,186 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 11:48:45,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:48:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 11:48:45,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 11:48:45,188 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:45,188 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] [2018-12-09 11:48:45,188 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:45,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:45,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1807372911, now seen corresponding path program 1 times [2018-12-09 11:48:45,189 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 11:48:45,189 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 [2018-12-09 11:48:45,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:45,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:48:45,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:48:45,246 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:48:45,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:45,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:48:45,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:48:45,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:48:45,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:45,253 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-09 11:48:45,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:45,282 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 11:48:45,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:48:45,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-09 11:48:45,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:45,283 INFO L225 Difference]: With dead ends: 49 [2018-12-09 11:48:45,283 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 11:48:45,283 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:45,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 11:48:45,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 11:48:45,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 11:48:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 11:48:45,287 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-12-09 11:48:45,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:45,288 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 11:48:45,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:48:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 11:48:45,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 11:48:45,288 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:45,289 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, 1] [2018-12-09 11:48:45,289 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:45,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:45,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1308631021, now seen corresponding path program 1 times [2018-12-09 11:48:45,289 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 11:48:45,289 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 [2018-12-09 11:48:45,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:45,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:48:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:48:45,342 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:48:45,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:45,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:48:45,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:48:45,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:48:45,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:45,350 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-09 11:48:45,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:45,387 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 11:48:45,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:48:45,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-09 11:48:45,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:45,388 INFO L225 Difference]: With dead ends: 49 [2018-12-09 11:48:45,389 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 11:48:45,389 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:45,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 11:48:45,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 11:48:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 11:48:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 11:48:45,392 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-12-09 11:48:45,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:45,392 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 11:48:45,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:48:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 11:48:45,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 11:48:45,393 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:45,393 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, 1, 1] [2018-12-09 11:48:45,393 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:45,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:45,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1853889587, now seen corresponding path program 1 times [2018-12-09 11:48:45,394 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 11:48:45,394 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 [2018-12-09 11:48:45,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:45,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:48:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:48:45,444 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:48:45,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:45,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:48:45,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:48:45,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:48:45,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:45,452 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-09 11:48:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:45,482 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 11:48:45,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:48:45,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-09 11:48:45,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:45,483 INFO L225 Difference]: With dead ends: 49 [2018-12-09 11:48:45,483 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 11:48:45,483 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 11:48:45,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 11:48:45,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 11:48:45,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 11:48:45,487 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-12-09 11:48:45,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:45,487 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 11:48:45,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:48:45,487 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 11:48:45,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 11:48:45,487 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:45,487 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, 1, 1] [2018-12-09 11:48:45,488 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:45,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:45,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1560486580, now seen corresponding path program 1 times [2018-12-09 11:48:45,488 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 11:48:45,488 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 [2018-12-09 11:48:45,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:45,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:48:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 11:48:45,656 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:48:45,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:45,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-09 11:48:45,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 11:48:45,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 11:48:45,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 11:48:45,668 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-12-09 11:48:46,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:46,091 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-12-09 11:48:46,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 11:48:46,092 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-12-09 11:48:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:46,092 INFO L225 Difference]: With dead ends: 43 [2018-12-09 11:48:46,092 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 11:48:46,093 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-09 11:48:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 11:48:46,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-12-09 11:48:46,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 11:48:46,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-12-09 11:48:46,096 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-12-09 11:48:46,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:46,096 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-12-09 11:48:46,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 11:48:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-12-09 11:48:46,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-09 11:48:46,097 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:46,097 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] [2018-12-09 11:48:46,098 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:46,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:46,098 INFO L82 PathProgramCache]: Analyzing trace with hash -132849900, now seen corresponding path program 1 times [2018-12-09 11:48:46,098 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 11:48:46,098 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 [2018-12-09 11:48:46,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:46,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:48:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 11:48:46,167 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:48:46,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:46,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:48:46,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:48:46,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:48:46,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:46,179 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-12-09 11:48:46,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:46,190 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-12-09 11:48:46,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:48:46,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-12-09 11:48:46,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:46,191 INFO L225 Difference]: With dead ends: 46 [2018-12-09 11:48:46,191 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 11:48:46,191 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:46,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 11:48:46,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 11:48:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 11:48:46,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-09 11:48:46,194 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-12-09 11:48:46,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:46,194 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-09 11:48:46,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:48:46,194 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-09 11:48:46,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-09 11:48:46,195 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:46,195 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, 1] [2018-12-09 11:48:46,195 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:46,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:46,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1974935426, now seen corresponding path program 1 times [2018-12-09 11:48:46,196 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 11:48:46,196 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 [2018-12-09 11:48:46,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:46,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:48:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 11:48:46,263 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:48:46,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:46,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:48:46,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:48:46,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:48:46,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:46,274 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-09 11:48:46,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:46,285 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-12-09 11:48:46,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:48:46,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-12-09 11:48:46,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:46,286 INFO L225 Difference]: With dead ends: 49 [2018-12-09 11:48:46,286 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 11:48:46,286 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:46,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 11:48:46,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 11:48:46,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 11:48:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-09 11:48:46,289 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-12-09 11:48:46,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:46,290 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-09 11:48:46,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:48:46,290 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-09 11:48:46,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 11:48:46,290 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:46,290 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] [2018-12-09 11:48:46,290 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:46,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:46,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1277705297, now seen corresponding path program 1 times [2018-12-09 11:48:46,291 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 11:48:46,291 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 [2018-12-09 11:48:46,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:46,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:48:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 11:48:46,469 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:48:46,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:46,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-09 11:48:46,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 11:48:46,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 11:48:46,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-12-09 11:48:46,477 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 10 states. [2018-12-09 11:48:46,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:46,763 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-12-09 11:48:46,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 11:48:46,763 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-12-09 11:48:46,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:46,764 INFO L225 Difference]: With dead ends: 44 [2018-12-09 11:48:46,764 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 11:48:46,764 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-12-09 11:48:46,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 11:48:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 11:48:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 11:48:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-12-09 11:48:46,767 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-12-09 11:48:46,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:46,767 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-12-09 11:48:46,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 11:48:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-12-09 11:48:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 11:48:46,768 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:46,768 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] [2018-12-09 11:48:46,768 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:46,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:46,768 INFO L82 PathProgramCache]: Analyzing trace with hash 576640719, now seen corresponding path program 1 times [2018-12-09 11:48:46,768 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 11:48:46,768 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 [2018-12-09 11:48:46,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:46,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:48:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 11:48:46,933 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:48:46,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:46,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 11:48:46,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 11:48:46,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 11:48:46,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 11:48:46,941 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-12-09 11:48:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:47,270 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-12-09 11:48:47,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 11:48:47,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-12-09 11:48:47,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:47,273 INFO L225 Difference]: With dead ends: 46 [2018-12-09 11:48:47,273 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 11:48:47,273 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 11:48:47,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 11:48:47,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-09 11:48:47,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 11:48:47,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-09 11:48:47,275 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-09 11:48:47,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:47,276 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-09 11:48:47,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 11:48:47,276 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-09 11:48:47,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 11:48:47,276 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:47,277 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, 1, 1] [2018-12-09 11:48:47,277 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:47,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:47,277 INFO L82 PathProgramCache]: Analyzing trace with hash -123656616, now seen corresponding path program 1 times [2018-12-09 11:48:47,277 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 11:48:47,278 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 [2018-12-09 11:48:47,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:47,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:48:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 11:48:47,338 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:48:47,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:47,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:48:47,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:48:47,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:48:47,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:47,347 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-09 11:48:47,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:47,362 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-09 11:48:47,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:48:47,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-12-09 11:48:47,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:47,363 INFO L225 Difference]: With dead ends: 46 [2018-12-09 11:48:47,363 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 11:48:47,363 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:47,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 11:48:47,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-09 11:48:47,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 11:48:47,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-09 11:48:47,366 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-09 11:48:47,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:47,366 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-09 11:48:47,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:48:47,367 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-09 11:48:47,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 11:48:47,367 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:47,367 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, 1, 1, 1] [2018-12-09 11:48:47,367 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:47,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:47,368 INFO L82 PathProgramCache]: Analyzing trace with hash 257799618, now seen corresponding path program 1 times [2018-12-09 11:48:47,368 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 11:48:47,368 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/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 [2018-12-09 11:48:47,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:47,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:48:47,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 11:48:47,434 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:48:47,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:47,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 11:48:47,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 11:48:47,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 11:48:47,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:47,443 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-09 11:48:47,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:47,459 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-09 11:48:47,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 11:48:47,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-12-09 11:48:47,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:47,461 INFO L225 Difference]: With dead ends: 46 [2018-12-09 11:48:47,461 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 11:48:47,461 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 11:48:47,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 11:48:47,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-09 11:48:47,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 11:48:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-09 11:48:47,464 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-12-09 11:48:47,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:47,464 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-09 11:48:47,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 11:48:47,464 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-09 11:48:47,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 11:48:47,465 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 11:48:47,465 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, 1, 1, 1] [2018-12-09 11:48:47,465 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 11:48:47,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 11:48:47,465 INFO L82 PathProgramCache]: Analyzing trace with hash -35603389, now seen corresponding path program 1 times [2018-12-09 11:48:47,466 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 11:48:47,466 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-12-09 11:48:47,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 11:48:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 11:48:47,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 11:48:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 11:48:47,618 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 11:48:47,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 11:48:47,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-09 11:48:47,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 11:48:47,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 11:48:47,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 11:48:47,626 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-12-09 11:48:47,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 11:48:47,865 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-12-09 11:48:47,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 11:48:47,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-12-09 11:48:47,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 11:48:47,865 INFO L225 Difference]: With dead ends: 33 [2018-12-09 11:48:47,865 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 11:48:47,866 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-09 11:48:47,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 11:48:47,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 11:48:47,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 11:48:47,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 11:48:47,866 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-12-09 11:48:47,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 11:48:47,866 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 11:48:47,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 11:48:47,866 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 11:48:47,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 11:48:47,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 11:48:48,017 INFO L451 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-12-09 11:48:48,018 INFO L448 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-12-09 11:48:48,018 INFO L448 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-12-09 11:48:48,018 INFO L448 ceAbstractionStarter]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2018-12-09 11:48:48,018 INFO L451 ceAbstractionStarter]: At program point L29-2(lines 29 34) the Hoare annotation is: true [2018-12-09 11:48:48,018 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 26 51) no Hoare annotation was computed. [2018-12-09 11:48:48,018 INFO L448 ceAbstractionStarter]: For program point L29-3(lines 26 51) no Hoare annotation was computed. [2018-12-09 11:48:48,018 INFO L448 ceAbstractionStarter]: For program point L46(lines 46 50) no Hoare annotation was computed. [2018-12-09 11:48:48,018 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 26 51) the Hoare annotation is: true [2018-12-09 11:48:48,018 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 50) no Hoare annotation was computed. [2018-12-09 11:48:48,018 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 26 51) no Hoare annotation was computed. [2018-12-09 11:48:48,018 INFO L448 ceAbstractionStarter]: For program point L39(lines 39 50) no Hoare annotation was computed. [2018-12-09 11:48:48,018 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 11:48:48,018 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 11:48:48,018 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 11:48:48,018 INFO L448 ceAbstractionStarter]: For program point L60(line 60) no Hoare annotation was computed. [2018-12-09 11:48:48,018 INFO L448 ceAbstractionStarter]: For program point L60-2(line 60) no Hoare annotation was computed. [2018-12-09 11:48:48,018 INFO L444 ceAbstractionStarter]: At program point L57(line 57) the Hoare annotation is: (and (= fmax_double_~x |fmax_double_#in~x|) (= fmax_double_~y |fmax_double_#in~y|)) [2018-12-09 11:48:48,019 INFO L451 ceAbstractionStarter]: At program point fmax_doubleENTRY(lines 53 61) the Hoare annotation is: true [2018-12-09 11:48:48,019 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 57 58) no Hoare annotation was computed. [2018-12-09 11:48:48,019 INFO L444 ceAbstractionStarter]: At program point L55(line 55) the Hoare annotation is: (and (= fmax_double_~x |fmax_double_#in~x|) (= fmax_double_~y |fmax_double_#in~y|)) [2018-12-09 11:48:48,019 INFO L448 ceAbstractionStarter]: For program point L55-1(lines 55 56) no Hoare annotation was computed. [2018-12-09 11:48:48,019 INFO L448 ceAbstractionStarter]: For program point fmax_doubleFINAL(lines 53 61) no Hoare annotation was computed. [2018-12-09 11:48:48,019 INFO L448 ceAbstractionStarter]: For program point fmax_doubleEXIT(lines 53 61) no Hoare annotation was computed. [2018-12-09 11:48:48,019 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 11:48:48,019 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 11:48:48,019 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 11:48:48,019 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 11:48:48,019 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2018-12-09 11:48:48,019 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 63 76) the Hoare annotation is: true [2018-12-09 11:48:48,019 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 63 76) no Hoare annotation was computed. [2018-12-09 11:48:48,019 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 63 76) no Hoare annotation was computed. [2018-12-09 11:48:48,019 INFO L448 ceAbstractionStarter]: For program point L72(line 72) no Hoare annotation was computed. [2018-12-09 11:48:48,019 INFO L444 ceAbstractionStarter]: At program point L71(line 71) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~y~0 .cse0) (= main_~res~0 .cse0))) [2018-12-09 11:48:48,019 INFO L448 ceAbstractionStarter]: For program point L71-1(lines 71 74) no Hoare annotation was computed. [2018-12-09 11:48:48,019 INFO L444 ceAbstractionStarter]: At program point L69(line 69) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~x~0 .cse0) (= main_~y~0 .cse0))) [2018-12-09 11:48:48,019 INFO L448 ceAbstractionStarter]: For program point L69-1(line 69) no Hoare annotation was computed. [2018-12-09 11:48:48,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:48:48 BoogieIcfgContainer [2018-12-09 11:48:48,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 11:48:48,023 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 11:48:48,023 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 11:48:48,023 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 11:48:48,023 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:48:44" (3/4) ... [2018-12-09 11:48:48,025 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 11:48:48,029 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-12-09 11:48:48,029 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-12-09 11:48:48,029 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 11:48:48,029 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_double [2018-12-09 11:48:48,030 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 11:48:48,032 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-12-09 11:48:48,032 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-09 11:48:48,032 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 11:48:48,058 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9cbebf72-98ef-4ec4-ae1d-a49e2af7e256/bin-2019/uautomizer/witness.graphml [2018-12-09 11:48:48,058 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 11:48:48,058 INFO L168 Benchmark]: Toolchain (without parser) took 3605.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 204.5 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -240.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:48:48,059 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:48:48,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.20 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 11:48:48,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.26 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 11:48:48,060 INFO L168 Benchmark]: Boogie Preprocessor took 19.22 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:48:48,060 INFO L168 Benchmark]: RCFGBuilder took 222.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -174.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-12-09 11:48:48,060 INFO L168 Benchmark]: TraceAbstraction took 3148.87 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -82.9 MB). Peak memory consumption was 311.0 MB. Max. memory is 11.5 GB. [2018-12-09 11:48:48,060 INFO L168 Benchmark]: Witness Printer took 34.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 11:48:48,061 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 162.20 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 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 15.26 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.22 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 222.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -174.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3148.87 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -82.9 MB). Peak memory consumption was 311.0 MB. Max. memory is 11.5 GB. * Witness Printer took 34.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: 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: 29]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 3.1s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 498 SDtfs, 31 SDslu, 1315 SDs, 0 SdLazy, 221 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21655 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1205 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...