./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/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 26bba4d307ba1cab1a3fe043c826d85928a7cf56 ....................................................................................................................................................................................................................................................................................................................................................................................................... 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_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/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 26bba4d307ba1cab1a3fe043c826d85928a7cf56 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 11:30:13,907 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:30:13,909 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:30:13,915 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:30:13,915 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:30:13,916 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:30:13,917 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:30:13,918 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:30:13,919 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:30:13,919 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:30:13,920 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:30:13,920 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:30:13,921 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:30:13,921 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:30:13,922 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:30:13,923 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:30:13,923 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:30:13,924 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:30:13,925 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:30:13,926 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:30:13,927 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:30:13,928 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:30:13,929 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:30:13,930 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:30:13,930 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:30:13,930 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:30:13,931 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:30:13,931 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:30:13,932 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:30:13,932 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:30:13,933 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:30:13,933 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:30:13,933 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:30:13,933 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:30:13,934 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:30:13,935 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:30:13,935 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 11:30:13,941 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:30:13,942 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:30:13,942 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:30:13,942 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 11:30:13,943 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 11:30:13,943 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 11:30:13,943 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 11:30:13,943 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:30:13,943 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:30:13,943 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:30:13,943 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:30:13,944 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:30:13,944 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:30:13,944 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:30:13,944 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:30:13,944 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:30:13,944 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:30:13,944 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:30:13,945 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:30:13,945 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:30:13,945 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:30:13,945 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:30:13,945 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:30:13,945 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:30:13,945 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:30:13,946 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:30:13,946 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:30:13,946 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 11:30:13,946 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:30:13,946 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:30:13,946 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_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/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 -> 26bba4d307ba1cab1a3fe043c826d85928a7cf56 [2018-11-18 11:30:13,967 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:30:13,975 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:30:13,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:30:13,978 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:30:13,978 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:30:13,978 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c [2018-11-18 11:30:14,019 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/data/6ed5c6358/538c3531b46a4a429523a79e68b1e2ea/FLAG800f775e5 [2018-11-18 11:30:14,404 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:30:14,405 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c [2018-11-18 11:30:14,409 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/data/6ed5c6358/538c3531b46a4a429523a79e68b1e2ea/FLAG800f775e5 [2018-11-18 11:30:14,417 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/data/6ed5c6358/538c3531b46a4a429523a79e68b1e2ea [2018-11-18 11:30:14,419 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:30:14,420 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 11:30:14,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:30:14,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:30:14,423 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:30:14,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:30:14" (1/1) ... [2018-11-18 11:30:14,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e791d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:14, skipping insertion in model container [2018-11-18 11:30:14,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:30:14" (1/1) ... [2018-11-18 11:30:14,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:30:14,445 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:30:14,557 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:30:14,559 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:30:14,573 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:30:14,585 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:30:14,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:14 WrapperNode [2018-11-18 11:30:14,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:30:14,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:30:14,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:30:14,586 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:30:14,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:14" (1/1) ... [2018-11-18 11:30:14,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:14" (1/1) ... [2018-11-18 11:30:14,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:14" (1/1) ... [2018-11-18 11:30:14,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:14" (1/1) ... [2018-11-18 11:30:14,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:14" (1/1) ... [2018-11-18 11:30:14,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:14" (1/1) ... [2018-11-18 11:30:14,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:14" (1/1) ... [2018-11-18 11:30:14,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:30:14,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:30:14,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:30:14,655 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:30:14,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:30:14,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:30:14,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:30:14,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-18 11:30:14,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-18 11:30:14,689 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-11-18 11:30:14,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:30:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 11:30:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 11:30:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-18 11:30:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-18 11:30:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 11:30:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 11:30:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 11:30:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 11:30:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-11-18 11:30:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:30:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:30:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:30:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 11:30:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 11:30:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-18 11:30:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 11:30:14,864 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:30:14,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:30:14 BoogieIcfgContainer [2018-11-18 11:30:14,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:30:14,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:30:14,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:30:14,868 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:30:14,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:30:14" (1/3) ... [2018-11-18 11:30:14,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1c9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:30:14, skipping insertion in model container [2018-11-18 11:30:14,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:14" (2/3) ... [2018-11-18 11:30:14,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1c9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:30:14, skipping insertion in model container [2018-11-18 11:30:14,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:30:14" (3/3) ... [2018-11-18 11:30:14,871 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b_true-unreach-call.c [2018-11-18 11:30:14,879 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:30:14,885 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 11:30:14,900 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 11:30:14,926 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:30:14,926 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:30:14,927 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:30:14,927 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:30:14,927 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:30:14,927 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:30:14,927 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:30:14,927 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:30:14,927 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:30:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-18 11:30:14,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 11:30:14,948 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:14,948 INFO L375 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] [2018-11-18 11:30:14,950 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:14,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:14,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1369620517, now seen corresponding path program 1 times [2018-11-18 11:30:14,956 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:30:14,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:30:14,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:30:14,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:14,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:30:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:15,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:30:15,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:15,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:30:15,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 11:30:15,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 11:30:15,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:30:15,081 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-18 11:30:15,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:15,098 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2018-11-18 11:30:15,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 11:30:15,099 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-11-18 11:30:15,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:15,105 INFO L225 Difference]: With dead ends: 69 [2018-11-18 11:30:15,105 INFO L226 Difference]: Without dead ends: 37 [2018-11-18 11:30:15,108 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:30:15,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-18 11:30:15,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-18 11:30:15,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-18 11:30:15,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2018-11-18 11:30:15,138 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2018-11-18 11:30:15,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:15,138 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2018-11-18 11:30:15,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 11:30:15,139 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2018-11-18 11:30:15,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 11:30:15,140 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:15,140 INFO L375 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] [2018-11-18 11:30:15,141 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:15,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:15,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1436735222, now seen corresponding path program 1 times [2018-11-18 11:30:15,141 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:30:15,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:30:15,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:30:15,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:15,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:30:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:30:15,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:15,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:30:15,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:30:15,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:30:15,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:15,212 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 4 states. [2018-11-18 11:30:15,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:15,232 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2018-11-18 11:30:15,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:30:15,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-18 11:30:15,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:15,234 INFO L225 Difference]: With dead ends: 47 [2018-11-18 11:30:15,234 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 11:30:15,235 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:15,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 11:30:15,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 11:30:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 11:30:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2018-11-18 11:30:15,241 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2018-11-18 11:30:15,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:15,242 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2018-11-18 11:30:15,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:30:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2018-11-18 11:30:15,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 11:30:15,242 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:15,243 INFO L375 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, 1] [2018-11-18 11:30:15,243 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:15,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:15,243 INFO L82 PathProgramCache]: Analyzing trace with hash 976217342, now seen corresponding path program 1 times [2018-11-18 11:30:15,243 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:30:15,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:30:15,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:30:15,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:15,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:30:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:30:15,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:15,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:30:15,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:30:15,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:30:15,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:15,306 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 4 states. [2018-11-18 11:30:15,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:15,348 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-11-18 11:30:15,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:30:15,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-11-18 11:30:15,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:15,350 INFO L225 Difference]: With dead ends: 51 [2018-11-18 11:30:15,350 INFO L226 Difference]: Without dead ends: 45 [2018-11-18 11:30:15,350 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:15,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-18 11:30:15,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2018-11-18 11:30:15,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 11:30:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2018-11-18 11:30:15,355 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2018-11-18 11:30:15,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:15,355 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2018-11-18 11:30:15,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:30:15,355 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2018-11-18 11:30:15,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 11:30:15,356 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:15,356 INFO L375 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, 1] [2018-11-18 11:30:15,356 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:15,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:15,356 INFO L82 PathProgramCache]: Analyzing trace with hash 779703837, now seen corresponding path program 1 times [2018-11-18 11:30:15,356 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:30:15,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:30:15,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:30:15,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:15,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:30:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:30:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:30:15,400 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 11:30:15,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:30:15 BoogieIcfgContainer [2018-11-18 11:30:15,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:30:15,417 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:30:15,417 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:30:15,417 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:30:15,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:30:14" (3/4) ... [2018-11-18 11:30:15,420 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 11:30:15,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:30:15,420 INFO L168 Benchmark]: Toolchain (without parser) took 1000.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -95.9 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. [2018-11-18 11:30:15,421 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:30:15,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 165.42 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:30:15,422 INFO L168 Benchmark]: Boogie Preprocessor took 68.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -185.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-18 11:30:15,422 INFO L168 Benchmark]: RCFGBuilder took 209.95 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:30:15,423 INFO L168 Benchmark]: TraceAbstraction took 551.58 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: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:30:15,423 INFO L168 Benchmark]: Witness Printer took 2.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:30:15,426 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 165.42 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 68.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -185.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 209.95 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 551.58 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: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 65. Possible FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; VAL [x=4294967300] [L72] CALL, EXPR isnan_double(x) VAL [\old(x)=4294967300] [L16] RET return x != x; VAL [\old(x)=4294967300, \result=0, x=4294967300] [L72] EXPR isnan_double(x) VAL [isnan_double(x)=0, x=4294967300] [L72] COND TRUE !isnan_double(x) [L74] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4294967300, \old(y)=4294967301] [L55] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967300] [L27] __uint32_t msw, lsw; VAL [\old(x)=4294967300, x=4294967300] [L30] FCALL ieee_double_shape_type ew_u; [L31] FCALL ew_u.value = (x) [L32] EXPR, FCALL ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR, FCALL ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L34] COND FALSE !(0) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] RET return 0; VAL [\old(x)=4294967300, \result=0, lsw=4294967297, msw=4293918721, x=4294967300] [L55] EXPR __fpclassify_double(x) VAL [\old(x)=4294967300, \old(y)=4294967301, __fpclassify_double(x)=0, x=4294967300, y=4294967301] [L55] COND TRUE __fpclassify_double(x) == 0 [L56] RET return y; VAL [\old(x)=4294967300, \old(y)=4294967301, \result=4294967301, x=4294967300, y=4294967301] [L74] EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4294967301, x=4294967300, y=4294967301] [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x VAL [res=4294967301, x=4294967300, y=4294967301] [L78] __VERIFIER_error() VAL [res=4294967301, x=4294967300, y=4294967301] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 139 SDtfs, 0 SDslu, 162 SDs, 0 SdLazy, 21 SolverSat, 2 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=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2761 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 0.1.23-5842f4b [2018-11-18 11:30:16,831 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:30:16,832 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:30:16,841 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:30:16,841 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:30:16,842 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:30:16,843 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:30:16,844 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:30:16,845 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:30:16,846 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:30:16,846 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:30:16,846 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:30:16,847 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:30:16,848 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:30:16,848 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:30:16,849 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:30:16,850 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:30:16,851 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:30:16,852 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:30:16,853 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:30:16,854 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:30:16,855 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:30:16,856 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:30:16,857 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:30:16,857 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:30:16,857 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:30:16,858 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:30:16,859 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:30:16,859 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:30:16,860 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:30:16,860 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:30:16,860 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:30:16,861 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:30:16,861 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:30:16,861 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:30:16,862 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:30:16,862 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 11:30:16,872 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:30:16,872 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:30:16,873 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:30:16,873 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 11:30:16,874 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 11:30:16,874 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 11:30:16,874 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 11:30:16,874 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:30:16,874 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:30:16,874 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:30:16,874 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:30:16,875 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:30:16,875 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:30:16,875 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:30:16,875 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 11:30:16,875 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 11:30:16,875 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:30:16,875 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:30:16,875 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:30:16,876 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:30:16,876 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:30:16,876 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:30:16,876 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:30:16,876 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:30:16,876 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:30:16,876 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:30:16,877 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:30:16,877 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:30:16,877 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 11:30:16,877 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:30:16,877 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 11:30:16,877 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 11:30:16,877 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_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/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 -> 26bba4d307ba1cab1a3fe043c826d85928a7cf56 [2018-11-18 11:30:16,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:30:16,917 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:30:16,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:30:16,920 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:30:16,921 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:30:16,921 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c [2018-11-18 11:30:16,966 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/data/33cc223fd/1c6abc4e12ae4b41aa3eedc65344eac9/FLAG96657ee30 [2018-11-18 11:30:17,291 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:30:17,291 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c [2018-11-18 11:30:17,295 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/data/33cc223fd/1c6abc4e12ae4b41aa3eedc65344eac9/FLAG96657ee30 [2018-11-18 11:30:17,723 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/data/33cc223fd/1c6abc4e12ae4b41aa3eedc65344eac9 [2018-11-18 11:30:17,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:30:17,726 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 11:30:17,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:30:17,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:30:17,730 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:30:17,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:30:17" (1/1) ... [2018-11-18 11:30:17,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f092cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:17, skipping insertion in model container [2018-11-18 11:30:17,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:30:17" (1/1) ... [2018-11-18 11:30:17,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:30:17,755 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:30:17,879 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:30:17,883 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:30:17,900 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:30:17,918 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:30:17,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:17 WrapperNode [2018-11-18 11:30:17,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:30:17,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:30:17,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:30:17,919 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:30:17,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:17" (1/1) ... [2018-11-18 11:30:17,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:17" (1/1) ... [2018-11-18 11:30:17,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:17" (1/1) ... [2018-11-18 11:30:17,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:17" (1/1) ... [2018-11-18 11:30:17,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:17" (1/1) ... [2018-11-18 11:30:17,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:17" (1/1) ... [2018-11-18 11:30:17,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:17" (1/1) ... [2018-11-18 11:30:17,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:30:17,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:30:17,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:30:17,948 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:30:17,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:30:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:30:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:30:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-11-18 11:30:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-18 11:30:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-11-18 11:30:18,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:30:18,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 11:30:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 11:30:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-11-18 11:30:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-18 11:30:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 11:30:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-18 11:30:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 11:30:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 11:30:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-11-18 11:30:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:30:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:30:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:30:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 11:30:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 11:30:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-11-18 11:30:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-11-18 11:30:18,218 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 11:30:18,255 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:30:18,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:30:18 BoogieIcfgContainer [2018-11-18 11:30:18,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:30:18,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:30:18,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:30:18,258 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:30:18,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:30:17" (1/3) ... [2018-11-18 11:30:18,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325f7d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:30:18, skipping insertion in model container [2018-11-18 11:30:18,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:17" (2/3) ... [2018-11-18 11:30:18,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325f7d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:30:18, skipping insertion in model container [2018-11-18 11:30:18,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:30:18" (3/3) ... [2018-11-18 11:30:18,260 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b_true-unreach-call.c [2018-11-18 11:30:18,266 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:30:18,270 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 11:30:18,278 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 11:30:18,297 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:30:18,298 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:30:18,298 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:30:18,298 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:30:18,298 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:30:18,298 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:30:18,298 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:30:18,298 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:30:18,298 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:30:18,308 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-11-18 11:30:18,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 11:30:18,312 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:18,312 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:30:18,314 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:18,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:18,317 INFO L82 PathProgramCache]: Analyzing trace with hash -697596560, now seen corresponding path program 1 times [2018-11-18 11:30:18,319 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:18,319 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:18,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:18,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:30:18,390 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:18,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:18,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:30:18,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 11:30:18,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 11:30:18,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:30:18,410 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2018-11-18 11:30:18,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:18,428 INFO L93 Difference]: Finished difference Result 64 states and 86 transitions. [2018-11-18 11:30:18,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 11:30:18,429 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-11-18 11:30:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:18,437 INFO L225 Difference]: With dead ends: 64 [2018-11-18 11:30:18,437 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 11:30:18,439 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:30:18,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 11:30:18,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-18 11:30:18,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 11:30:18,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2018-11-18 11:30:18,466 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 25 [2018-11-18 11:30:18,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:18,467 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2018-11-18 11:30:18,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 11:30:18,467 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2018-11-18 11:30:18,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 11:30:18,468 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:18,468 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:30:18,469 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:18,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:18,469 INFO L82 PathProgramCache]: Analyzing trace with hash 234574242, now seen corresponding path program 1 times [2018-11-18 11:30:18,469 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:18,469 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:18,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:18,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:30:18,561 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:18,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:18,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:30:18,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:30:18,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:30:18,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:18,574 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 4 states. [2018-11-18 11:30:18,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:18,605 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-11-18 11:30:18,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:30:18,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-18 11:30:18,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:18,607 INFO L225 Difference]: With dead ends: 43 [2018-11-18 11:30:18,608 INFO L226 Difference]: Without dead ends: 37 [2018-11-18 11:30:18,608 INFO L604 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 [2018-11-18 11:30:18,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-18 11:30:18,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-18 11:30:18,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-18 11:30:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-11-18 11:30:18,613 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 26 [2018-11-18 11:30:18,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:18,613 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-11-18 11:30:18,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:30:18,613 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-11-18 11:30:18,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 11:30:18,614 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:18,614 INFO L375 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] [2018-11-18 11:30:18,614 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:18,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:18,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1462851539, now seen corresponding path program 1 times [2018-11-18 11:30:18,615 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:18,615 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:18,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:18,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:30:18,683 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:18,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:18,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:30:18,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:30:18,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:30:18,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:18,690 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2018-11-18 11:30:18,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:18,717 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2018-11-18 11:30:18,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:30:18,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-18 11:30:18,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:18,719 INFO L225 Difference]: With dead ends: 46 [2018-11-18 11:30:18,719 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 11:30:18,719 INFO L604 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 [2018-11-18 11:30:18,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 11:30:18,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-11-18 11:30:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-18 11:30:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-11-18 11:30:18,723 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 27 [2018-11-18 11:30:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:18,723 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-11-18 11:30:18,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:30:18,723 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-11-18 11:30:18,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 11:30:18,724 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:18,724 INFO L375 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] [2018-11-18 11:30:18,725 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:18,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:18,725 INFO L82 PathProgramCache]: Analyzing trace with hash -2050108474, now seen corresponding path program 1 times [2018-11-18 11:30:18,725 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:18,725 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:18,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:18,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:30:18,813 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:18,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:18,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:30:18,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:30:18,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:30:18,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:18,822 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2018-11-18 11:30:18,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:18,862 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2018-11-18 11:30:18,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:30:18,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-18 11:30:18,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:18,863 INFO L225 Difference]: With dead ends: 46 [2018-11-18 11:30:18,863 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 11:30:18,863 INFO L604 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 [2018-11-18 11:30:18,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 11:30:18,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-11-18 11:30:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-18 11:30:18,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-11-18 11:30:18,867 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 28 [2018-11-18 11:30:18,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:18,867 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-11-18 11:30:18,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:30:18,867 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-11-18 11:30:18,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 11:30:18,868 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:18,868 INFO L375 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] [2018-11-18 11:30:18,868 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:18,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:18,868 INFO L82 PathProgramCache]: Analyzing trace with hash 2077397559, now seen corresponding path program 1 times [2018-11-18 11:30:18,868 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:18,868 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:18,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:18,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:30:18,922 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:18,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:18,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:30:18,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:30:18,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:30:18,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:18,929 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2018-11-18 11:30:18,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:18,951 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2018-11-18 11:30:18,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:30:18,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-18 11:30:18,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:18,952 INFO L225 Difference]: With dead ends: 46 [2018-11-18 11:30:18,952 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 11:30:18,953 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:18,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 11:30:18,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-11-18 11:30:18,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-18 11:30:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-11-18 11:30:18,956 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2018-11-18 11:30:18,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:18,956 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-11-18 11:30:18,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:30:18,956 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-11-18 11:30:18,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 11:30:18,957 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:18,957 INFO L375 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] [2018-11-18 11:30:18,957 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:18,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:18,958 INFO L82 PathProgramCache]: Analyzing trace with hash 269943096, now seen corresponding path program 1 times [2018-11-18 11:30:18,958 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:18,958 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:18,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:19,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:19,111 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:30:19,111 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:30:19,115 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2018-11-18 11:30:19,151 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:30:19,157 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2018-11-18 11:30:19,157 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:30:19,170 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-11-18 11:30:19,175 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 4 [2018-11-18 11:30:19,175 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:30:19,177 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:30:19,179 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:30:19,186 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 11:30:19,186 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:46, output treesize:18 [2018-11-18 11:30:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:30:19,664 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:19,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:19,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-18 11:30:19,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 11:30:19,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 11:30:19,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-11-18 11:30:19,672 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 12 states. [2018-11-18 11:30:21,684 WARN L180 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2018-11-18 11:30:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:22,197 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2018-11-18 11:30:22,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 11:30:22,198 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-11-18 11:30:22,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:22,199 INFO L225 Difference]: With dead ends: 54 [2018-11-18 11:30:22,199 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 11:30:22,200 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-11-18 11:30:22,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 11:30:22,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2018-11-18 11:30:22,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 11:30:22,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-18 11:30:22,203 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 29 [2018-11-18 11:30:22,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:22,204 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-18 11:30:22,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 11:30:22,204 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-11-18 11:30:22,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-18 11:30:22,204 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:22,205 INFO L375 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] [2018-11-18 11:30:22,205 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:22,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:22,205 INFO L82 PathProgramCache]: Analyzing trace with hash -380794880, now seen corresponding path program 1 times [2018-11-18 11:30:22,205 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:22,205 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:22,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:22,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 11:30:22,284 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:22,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:22,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:30:22,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:30:22,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:30:22,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:22,293 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 4 states. [2018-11-18 11:30:22,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:22,303 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2018-11-18 11:30:22,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:30:22,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-18 11:30:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:22,304 INFO L225 Difference]: With dead ends: 45 [2018-11-18 11:30:22,304 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 11:30:22,305 INFO L604 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 [2018-11-18 11:30:22,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 11:30:22,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-18 11:30:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 11:30:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-11-18 11:30:22,309 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 34 [2018-11-18 11:30:22,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:22,309 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-11-18 11:30:22,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:30:22,310 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-11-18 11:30:22,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 11:30:22,310 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:22,310 INFO L375 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] [2018-11-18 11:30:22,311 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:22,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:22,311 INFO L82 PathProgramCache]: Analyzing trace with hash -2143740721, now seen corresponding path program 1 times [2018-11-18 11:30:22,311 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:22,311 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:22,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:22,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 11:30:22,374 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:22,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:22,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:30:22,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:30:22,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:30:22,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:22,387 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 4 states. [2018-11-18 11:30:22,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:22,400 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-11-18 11:30:22,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:30:22,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-11-18 11:30:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:22,401 INFO L225 Difference]: With dead ends: 48 [2018-11-18 11:30:22,401 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 11:30:22,401 INFO L604 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 [2018-11-18 11:30:22,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 11:30:22,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-11-18 11:30:22,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 11:30:22,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-11-18 11:30:22,405 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 35 [2018-11-18 11:30:22,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:22,406 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-11-18 11:30:22,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:30:22,406 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-11-18 11:30:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 11:30:22,406 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:22,406 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:30:22,406 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:22,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:22,407 INFO L82 PathProgramCache]: Analyzing trace with hash 559740827, now seen corresponding path program 1 times [2018-11-18 11:30:22,407 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:22,407 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:22,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:22,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 11:30:22,560 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:22,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:22,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 11:30:22,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:30:22,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:30:22,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:30:22,568 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 5 states. [2018-11-18 11:30:22,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:22,723 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2018-11-18 11:30:22,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:30:22,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-11-18 11:30:22,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:22,725 INFO L225 Difference]: With dead ends: 46 [2018-11-18 11:30:22,725 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 11:30:22,725 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:30:22,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 11:30:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-18 11:30:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 11:30:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-11-18 11:30:22,730 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 36 [2018-11-18 11:30:22,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:22,731 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-11-18 11:30:22,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:30:22,731 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-11-18 11:30:22,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 11:30:22,731 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:22,732 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:30:22,732 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:22,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:22,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1960219107, now seen corresponding path program 1 times [2018-11-18 11:30:22,732 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:22,732 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:22,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:22,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 11:30:22,928 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:22,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:22,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 11:30:22,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 11:30:22,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:30:22,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:30:22,942 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2018-11-18 11:30:23,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:23,378 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2018-11-18 11:30:23,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 11:30:23,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2018-11-18 11:30:23,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:23,379 INFO L225 Difference]: With dead ends: 50 [2018-11-18 11:30:23,380 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 11:30:23,381 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:30:23,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 11:30:23,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 11:30:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 11:30:23,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-11-18 11:30:23,385 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2018-11-18 11:30:23,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:23,385 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-11-18 11:30:23,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 11:30:23,385 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-11-18 11:30:23,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 11:30:23,386 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:23,386 INFO L375 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] [2018-11-18 11:30:23,386 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:23,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:23,386 INFO L82 PathProgramCache]: Analyzing trace with hash 399629796, now seen corresponding path program 1 times [2018-11-18 11:30:23,387 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:23,387 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:23,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:23,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 11:30:23,458 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:23,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:23,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:30:23,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:30:23,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:30:23,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:23,467 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2018-11-18 11:30:23,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:23,477 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2018-11-18 11:30:23,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:30:23,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-18 11:30:23,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:23,478 INFO L225 Difference]: With dead ends: 50 [2018-11-18 11:30:23,478 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 11:30:23,479 INFO L604 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 [2018-11-18 11:30:23,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 11:30:23,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-11-18 11:30:23,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 11:30:23,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-11-18 11:30:23,482 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2018-11-18 11:30:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:23,483 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-11-18 11:30:23,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:30:23,483 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-11-18 11:30:23,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-18 11:30:23,483 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:23,484 INFO L375 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, 1] [2018-11-18 11:30:23,484 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:23,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:23,484 INFO L82 PathProgramCache]: Analyzing trace with hash 360909612, now seen corresponding path program 1 times [2018-11-18 11:30:23,484 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:23,484 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:23,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:23,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:23,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 11:30:23,693 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:23,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:23,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 11:30:23,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 11:30:23,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:30:23,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:30:23,702 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 8 states. [2018-11-18 11:30:24,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:24,471 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2018-11-18 11:30:24,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 11:30:24,472 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2018-11-18 11:30:24,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:24,472 INFO L225 Difference]: With dead ends: 52 [2018-11-18 11:30:24,472 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 11:30:24,473 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:30:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 11:30:24,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-11-18 11:30:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 11:30:24,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-11-18 11:30:24,476 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 37 [2018-11-18 11:30:24,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:24,476 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-11-18 11:30:24,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 11:30:24,476 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-11-18 11:30:24,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-18 11:30:24,476 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:24,477 INFO L375 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, 1] [2018-11-18 11:30:24,477 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:24,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:24,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1000146061, now seen corresponding path program 1 times [2018-11-18 11:30:24,477 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:24,477 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:24,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:24,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:24,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 11:30:24,564 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:24,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:24,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:30:24,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:30:24,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:30:24,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:24,572 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2018-11-18 11:30:24,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:24,581 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2018-11-18 11:30:24,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:30:24,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-11-18 11:30:24,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:24,582 INFO L225 Difference]: With dead ends: 48 [2018-11-18 11:30:24,582 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 11:30:24,582 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:24,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 11:30:24,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-11-18 11:30:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 11:30:24,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2018-11-18 11:30:24,585 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 37 [2018-11-18 11:30:24,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:24,585 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2018-11-18 11:30:24,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:30:24,586 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2018-11-18 11:30:24,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-18 11:30:24,586 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:24,586 INFO L375 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, 1] [2018-11-18 11:30:24,586 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:24,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:24,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1487366772, now seen corresponding path program 1 times [2018-11-18 11:30:24,587 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:24,587 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:24,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:24,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:24,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 11:30:24,958 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:30:25,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:30:25,678 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:30:25,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:26,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 11:30:26,471 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:26,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 11:30:26,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 16 [2018-11-18 11:30:26,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 11:30:26,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 11:30:26,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2018-11-18 11:30:26,488 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 16 states. [2018-11-18 11:30:27,736 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2018-11-18 11:30:27,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:27,834 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-11-18 11:30:27,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 11:30:27,835 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2018-11-18 11:30:27,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:27,835 INFO L225 Difference]: With dead ends: 59 [2018-11-18 11:30:27,836 INFO L226 Difference]: Without dead ends: 49 [2018-11-18 11:30:27,836 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2018-11-18 11:30:27,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-18 11:30:27,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2018-11-18 11:30:27,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 11:30:27,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-11-18 11:30:27,840 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 37 [2018-11-18 11:30:27,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:27,840 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-11-18 11:30:27,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 11:30:27,840 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-11-18 11:30:27,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-18 11:30:27,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:27,841 INFO L375 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, 1, 1] [2018-11-18 11:30:27,841 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:27,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:27,841 INFO L82 PathProgramCache]: Analyzing trace with hash 703585025, now seen corresponding path program 1 times [2018-11-18 11:30:27,841 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:27,841 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:27,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:27,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 11:30:28,018 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:28,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:28,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 11:30:28,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 11:30:28,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:30:28,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:30:28,027 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 8 states. [2018-11-18 11:30:28,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:28,589 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-11-18 11:30:28,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 11:30:28,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2018-11-18 11:30:28,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:28,590 INFO L225 Difference]: With dead ends: 51 [2018-11-18 11:30:28,590 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 11:30:28,590 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:30:28,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 11:30:28,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2018-11-18 11:30:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 11:30:28,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-11-18 11:30:28,594 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 38 [2018-11-18 11:30:28,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:28,595 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-11-18 11:30:28,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 11:30:28,595 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-11-18 11:30:28,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-18 11:30:28,595 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:28,595 INFO L375 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, 1, 1, 1] [2018-11-18 11:30:28,595 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:28,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:28,596 INFO L82 PathProgramCache]: Analyzing trace with hash -156249904, now seen corresponding path program 1 times [2018-11-18 11:30:28,596 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:28,596 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:28,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:28,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:28,702 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:30:28,703 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:30:28,704 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2018-11-18 11:30:28,740 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-11-18 11:30:28,740 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:30:28,753 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-18 11:30:28,757 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2018-11-18 11:30:28,757 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:30:28,759 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:30:28,761 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:30:28,770 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 11:30:28,770 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:46, output treesize:18 [2018-11-18 11:30:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 11:30:28,873 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:28,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:28,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 11:30:28,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 11:30:28,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:30:28,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:30:28,882 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 8 states. [2018-11-18 11:30:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:29,631 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-11-18 11:30:29,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 11:30:29,632 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2018-11-18 11:30:29,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:29,632 INFO L225 Difference]: With dead ends: 47 [2018-11-18 11:30:29,632 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 11:30:29,633 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:30:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 11:30:29,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-11-18 11:30:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 11:30:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2018-11-18 11:30:29,636 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 39 [2018-11-18 11:30:29,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:29,636 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2018-11-18 11:30:29,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 11:30:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2018-11-18 11:30:29,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-18 11:30:29,637 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:30:29,637 INFO L375 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, 1, 1, 1] [2018-11-18 11:30:29,638 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:30:29,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:30:29,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1953201263, now seen corresponding path program 1 times [2018-11-18 11:30:29,638 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 11:30:29,638 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2018-11-18 11:30:29,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:30:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:30:29,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:30:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 11:30:29,729 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:30:29,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:30:29,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:30:29,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:30:29,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:30:29,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:29,737 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 4 states. [2018-11-18 11:30:29,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:30:29,743 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2018-11-18 11:30:29,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:30:29,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-11-18 11:30:29,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:30:29,743 INFO L225 Difference]: With dead ends: 36 [2018-11-18 11:30:29,744 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 11:30:29,744 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:30:29,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 11:30:29,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 11:30:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 11:30:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 11:30:29,744 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-11-18 11:30:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:30:29,745 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 11:30:29,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:30:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 11:30:29,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 11:30:29,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 11:30:29,904 INFO L428 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-11-18 11:30:29,905 INFO L425 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-11-18 11:30:29,905 INFO L425 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-11-18 11:30:29,905 INFO L425 ceAbstractionStarter]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2018-11-18 11:30:29,905 INFO L425 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 26 51) no Hoare annotation was computed. [2018-11-18 11:30:29,905 INFO L421 ceAbstractionStarter]: At program point L29-3(lines 29 34) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2018-11-18 11:30:29,905 INFO L425 ceAbstractionStarter]: For program point L29-4(lines 26 51) no Hoare annotation was computed. [2018-11-18 11:30:29,905 INFO L425 ceAbstractionStarter]: For program point L46(lines 46 50) no Hoare annotation was computed. [2018-11-18 11:30:29,905 INFO L428 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 26 51) the Hoare annotation is: true [2018-11-18 11:30:29,905 INFO L425 ceAbstractionStarter]: For program point L42(lines 42 50) no Hoare annotation was computed. [2018-11-18 11:30:29,905 INFO L425 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 26 51) no Hoare annotation was computed. [2018-11-18 11:30:29,905 INFO L425 ceAbstractionStarter]: For program point L39(lines 39 50) no Hoare annotation was computed. [2018-11-18 11:30:29,905 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:30:29,905 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:30:29,905 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:30:29,906 INFO L425 ceAbstractionStarter]: For program point L60(line 60) no Hoare annotation was computed. [2018-11-18 11:30:29,906 INFO L425 ceAbstractionStarter]: For program point L60-2(line 60) no Hoare annotation was computed. [2018-11-18 11:30:29,906 INFO L421 ceAbstractionStarter]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (= fmax_double_~x |fmax_double_#in~x|))) (or (and .cse0 (= fmax_double_~y |fmax_double_#in~y|)) (and .cse0 (exists ((v_prenex_7 (_ BitVec 64))) (let ((.cse1 ((_ extract 63 32) v_prenex_7))) (and (not (bvule .cse1 (_ bv2146435071 32))) (not (= (_ bv0 32) ((_ extract 31 0) v_prenex_7))) (not (bvuge .cse1 (_ bv2147483648 32))) (= |fmax_double_#in~x| (fp ((_ extract 63 63) v_prenex_7) ((_ extract 62 52) v_prenex_7) ((_ extract 51 0) v_prenex_7))))))))) [2018-11-18 11:30:29,906 INFO L428 ceAbstractionStarter]: At program point fmax_doubleENTRY(lines 53 61) the Hoare annotation is: true [2018-11-18 11:30:29,906 INFO L425 ceAbstractionStarter]: For program point L57-1(lines 57 58) no Hoare annotation was computed. [2018-11-18 11:30:29,906 INFO L421 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|)) [2018-11-18 11:30:29,906 INFO L425 ceAbstractionStarter]: For program point L55-1(lines 55 56) no Hoare annotation was computed. [2018-11-18 11:30:29,906 INFO L425 ceAbstractionStarter]: For program point fmax_doubleFINAL(lines 53 61) no Hoare annotation was computed. [2018-11-18 11:30:29,906 INFO L425 ceAbstractionStarter]: For program point fmax_doubleEXIT(lines 53 61) no Hoare annotation was computed. [2018-11-18 11:30:29,906 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:30:29,906 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 11:30:29,906 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:30:29,906 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:30:29,906 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 63 84) the Hoare annotation is: true [2018-11-18 11:30:29,907 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 63 84) no Hoare annotation was computed. [2018-11-18 11:30:29,907 INFO L425 ceAbstractionStarter]: For program point L78(line 78) no Hoare annotation was computed. [2018-11-18 11:30:29,907 INFO L425 ceAbstractionStarter]: For program point L77(lines 77 80) no Hoare annotation was computed. [2018-11-18 11:30:29,907 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 63 84) no Hoare annotation was computed. [2018-11-18 11:30:29,907 INFO L421 ceAbstractionStarter]: At program point L74(line 74) the Hoare annotation is: (and (= main_~y~0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53))) (fp.eq main_~x~0 main_~x~0)) [2018-11-18 11:30:29,907 INFO L425 ceAbstractionStarter]: For program point L74-1(line 74) no Hoare annotation was computed. [2018-11-18 11:30:29,907 INFO L421 ceAbstractionStarter]: At program point L72(line 72) the Hoare annotation is: (= main_~y~0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53))) [2018-11-18 11:30:29,907 INFO L425 ceAbstractionStarter]: For program point L72-1(lines 72 81) no Hoare annotation was computed. [2018-11-18 11:30:29,907 INFO L425 ceAbstractionStarter]: For program point L72-3(lines 72 81) no Hoare annotation was computed. [2018-11-18 11:30:29,907 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 78) no Hoare annotation was computed. [2018-11-18 11:30:29,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:30:29 BoogieIcfgContainer [2018-11-18 11:30:29,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:30:29,916 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:30:29,916 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:30:29,917 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:30:29,917 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:30:18" (3/4) ... [2018-11-18 11:30:29,919 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 11:30:29,923 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-11-18 11:30:29,923 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 11:30:29,923 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-11-18 11:30:29,923 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_double [2018-11-18 11:30:29,924 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 11:30:29,927 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-11-18 11:30:29,927 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-18 11:30:29,928 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 11:30:29,945 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-18 11:30:29,960 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2ddf53bf-9d25-4c82-95bf-84dfc752ee1c/bin-2019/uautomizer/witness.graphml [2018-11-18 11:30:29,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:30:29,961 INFO L168 Benchmark]: Toolchain (without parser) took 12234.93 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 272.6 MB). Free memory was 947.8 MB in the beginning and 1.2 GB in the end (delta: -291.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:30:29,961 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:30:29,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 191.62 ms. Allocated memory is still 1.0 GB. Free memory was 947.8 MB in the beginning and 931.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 11:30:29,961 INFO L168 Benchmark]: Boogie Preprocessor took 28.61 ms. Allocated memory is still 1.0 GB. Free memory is still 931.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:30:29,961 INFO L168 Benchmark]: RCFGBuilder took 308.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 931.7 MB in the beginning and 1.1 GB in the end (delta: -196.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2018-11-18 11:30:29,962 INFO L168 Benchmark]: TraceAbstraction took 11659.88 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 115.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -118.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:30:29,962 INFO L168 Benchmark]: Witness Printer took 43.48 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-11-18 11:30:29,963 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 191.62 ms. Allocated memory is still 1.0 GB. Free memory was 947.8 MB in the beginning and 931.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.61 ms. Allocated memory is still 1.0 GB. Free memory is still 931.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 308.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 931.7 MB in the beginning and 1.1 GB in the end (delta: -196.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11659.88 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 115.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -118.7 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 43.48 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 78]: 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: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. SAFE Result, 11.6s OverallTime, 17 OverallIterations, 2 TraceHistogramMax, 6.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 612 SDtfs, 211 SDslu, 1675 SDs, 0 SdLazy, 877 SolverSat, 7 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 636 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 17 MinimizatonAttempts, 41 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 18 PreInvPairs, 23 NumberOfFragments, 71 HoareAnnotationTreeSize, 18 FomulaSimplifications, 53 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 605 NumberOfCodeBlocks, 605 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 587 ConstructedInterpolants, 66 QuantifiedInterpolants, 98955 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1719 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 18 InterpolantComputations, 17 PerfectInterpolantSequences, 67/72 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...