./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/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_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/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_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/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_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/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 0.1.23-635dfa2 [2018-12-02 07:05:21,546 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 07:05:21,548 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 07:05:21,555 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 07:05:21,555 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 07:05:21,555 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 07:05:21,556 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 07:05:21,557 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 07:05:21,558 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 07:05:21,559 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 07:05:21,559 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 07:05:21,560 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 07:05:21,560 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 07:05:21,561 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 07:05:21,562 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 07:05:21,562 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 07:05:21,563 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 07:05:21,564 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 07:05:21,565 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 07:05:21,566 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 07:05:21,567 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 07:05:21,568 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 07:05:21,569 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 07:05:21,570 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 07:05:21,570 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 07:05:21,570 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 07:05:21,571 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 07:05:21,571 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 07:05:21,572 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 07:05:21,573 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 07:05:21,573 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 07:05:21,573 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 07:05:21,574 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 07:05:21,574 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 07:05:21,574 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 07:05:21,575 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 07:05:21,575 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-02 07:05:21,582 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 07:05:21,582 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 07:05:21,583 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 07:05:21,583 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 07:05:21,583 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 07:05:21,583 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 07:05:21,583 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 07:05:21,583 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 07:05:21,584 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 07:05:21,584 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 07:05:21,584 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 07:05:21,584 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 07:05:21,584 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 07:05:21,584 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 07:05:21,584 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 07:05:21,584 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 07:05:21,584 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 07:05:21,584 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 07:05:21,584 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 07:05:21,584 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 07:05:21,584 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 07:05:21,585 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 07:05:21,585 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 07:05:21,585 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 07:05:21,585 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 07:05:21,585 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 07:05:21,585 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 07:05:21,585 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 07:05:21,585 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 07:05:21,585 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 07:05:21,585 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_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/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 [2018-12-02 07:05:21,602 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 07:05:21,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 07:05:21,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 07:05:21,611 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 07:05:21,612 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 07:05:21,612 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c [2018-12-02 07:05:21,647 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/data/22d571d7d/4aa1ec0e1903435f9be183582ec6e36f/FLAG10a196232 [2018-12-02 07:05:21,967 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 07:05:21,968 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c [2018-12-02 07:05:21,971 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/data/22d571d7d/4aa1ec0e1903435f9be183582ec6e36f/FLAG10a196232 [2018-12-02 07:05:22,386 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/data/22d571d7d/4aa1ec0e1903435f9be183582ec6e36f [2018-12-02 07:05:22,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 07:05:22,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 07:05:22,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 07:05:22,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 07:05:22,393 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 07:05:22,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:05:22" (1/1) ... [2018-12-02 07:05:22,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3757d378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:22, skipping insertion in model container [2018-12-02 07:05:22,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:05:22" (1/1) ... [2018-12-02 07:05:22,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 07:05:22,414 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 07:05:22,511 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 07:05:22,513 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 07:05:22,528 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 07:05:22,541 INFO L195 MainTranslator]: Completed translation [2018-12-02 07:05:22,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:22 WrapperNode [2018-12-02 07:05:22,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 07:05:22,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 07:05:22,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 07:05:22,543 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 07:05:22,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:22" (1/1) ... [2018-12-02 07:05:22,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:22" (1/1) ... [2018-12-02 07:05:22,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 07:05:22,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 07:05:22,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 07:05:22,560 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 07:05:22,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:22" (1/1) ... [2018-12-02 07:05:22,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:22" (1/1) ... [2018-12-02 07:05:22,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:22" (1/1) ... [2018-12-02 07:05:22,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:22" (1/1) ... [2018-12-02 07:05:22,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:22" (1/1) ... [2018-12-02 07:05:22,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:22" (1/1) ... [2018-12-02 07:05:22,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:22" (1/1) ... [2018-12-02 07:05:22,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 07:05:22,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 07:05:22,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 07:05:22,608 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 07:05:22,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 07:05:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-02 07:05:22,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-02 07:05:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 07:05:22,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 07:05:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-02 07:05:22,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-02 07:05:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 07:05:22,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 07:05:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-12-02 07:05:22,642 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-12-02 07:05:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-02 07:05:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 07:05:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 07:05:22,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 07:05:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 07:05:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 07:05:22,779 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 07:05:22,779 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 07:05:22,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:05:22 BoogieIcfgContainer [2018-12-02 07:05:22,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 07:05:22,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 07:05:22,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 07:05:22,782 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 07:05:22,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:05:22" (1/3) ... [2018-12-02 07:05:22,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc65bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:05:22, skipping insertion in model container [2018-12-02 07:05:22,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:22" (2/3) ... [2018-12-02 07:05:22,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc65bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:05:22, skipping insertion in model container [2018-12-02 07:05:22,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:05:22" (3/3) ... [2018-12-02 07:05:22,784 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b_true-unreach-call.c [2018-12-02 07:05:22,790 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 07:05:22,795 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 07:05:22,803 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 07:05:22,820 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 07:05:22,820 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 07:05:22,820 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 07:05:22,820 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 07:05:22,820 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 07:05:22,820 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 07:05:22,820 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 07:05:22,821 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 07:05:22,821 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 07:05:22,830 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-02 07:05:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-02 07:05:22,834 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:22,835 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:22,836 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:22,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:22,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2032926079, now seen corresponding path program 1 times [2018-12-02 07:05:22,840 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 07:05:22,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 07:05:22,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 07:05:22,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:22,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 07:05:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:22,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 07:05:22,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:22,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 07:05:22,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 07:05:22,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 07:05:22,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 07:05:22,931 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-02 07:05:22,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:22,944 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2018-12-02 07:05:22,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 07:05:22,945 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-12-02 07:05:22,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:22,950 INFO L225 Difference]: With dead ends: 69 [2018-12-02 07:05:22,951 INFO L226 Difference]: Without dead ends: 37 [2018-12-02 07:05:22,952 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 07:05:22,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-02 07:05:22,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-02 07:05:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 07:05:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2018-12-02 07:05:22,976 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2018-12-02 07:05:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:22,976 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2018-12-02 07:05:22,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 07:05:22,976 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2018-12-02 07:05:22,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-02 07:05:22,977 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:22,977 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:22,978 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:22,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:22,978 INFO L82 PathProgramCache]: Analyzing trace with hash 544472172, now seen corresponding path program 1 times [2018-12-02 07:05:22,978 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 07:05:22,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 07:05:22,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 07:05:22,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:22,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 07:05:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 07:05:23,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:23,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 07:05:23,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 07:05:23,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 07:05:23,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:23,036 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 4 states. [2018-12-02 07:05:23,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:23,055 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2018-12-02 07:05:23,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 07:05:23,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-02 07:05:23,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:23,058 INFO L225 Difference]: With dead ends: 47 [2018-12-02 07:05:23,058 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 07:05:23,058 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:23,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 07:05:23,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 07:05:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 07:05:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2018-12-02 07:05:23,064 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2018-12-02 07:05:23,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:23,064 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2018-12-02 07:05:23,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 07:05:23,064 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2018-12-02 07:05:23,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-02 07:05:23,065 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:23,065 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:23,065 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:23,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:23,065 INFO L82 PathProgramCache]: Analyzing trace with hash -2058062536, now seen corresponding path program 1 times [2018-12-02 07:05:23,065 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 07:05:23,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 07:05:23,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 07:05:23,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:23,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 07:05:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 07:05:23,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:23,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 07:05:23,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 07:05:23,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 07:05:23,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:23,102 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 4 states. [2018-12-02 07:05:23,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:23,117 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-12-02 07:05:23,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 07:05:23,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-12-02 07:05:23,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:23,118 INFO L225 Difference]: With dead ends: 51 [2018-12-02 07:05:23,118 INFO L226 Difference]: Without dead ends: 45 [2018-12-02 07:05:23,119 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:23,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-02 07:05:23,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2018-12-02 07:05:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 07:05:23,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2018-12-02 07:05:23,122 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2018-12-02 07:05:23,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:23,122 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2018-12-02 07:05:23,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 07:05:23,123 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2018-12-02 07:05:23,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-02 07:05:23,123 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:23,123 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:23,123 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:23,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:23,123 INFO L82 PathProgramCache]: Analyzing trace with hash 2040391255, now seen corresponding path program 1 times [2018-12-02 07:05:23,124 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 07:05:23,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 07:05:23,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 07:05:23,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:23,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 07:05:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 07:05:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 07:05:23,159 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 07:05:23,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:05:23 BoogieIcfgContainer [2018-12-02 07:05:23,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 07:05:23,176 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 07:05:23,176 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 07:05:23,176 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 07:05:23,177 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:05:22" (3/4) ... [2018-12-02 07:05:23,179 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 07:05:23,179 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 07:05:23,179 INFO L168 Benchmark]: Toolchain (without parser) took 790.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 953.3 MB in the beginning and 1.0 GB in the end (delta: -64.0 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. [2018-12-02 07:05:23,180 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 07:05:23,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.66 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-12-02 07:05:23,181 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.39 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 939.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-02 07:05:23,181 INFO L168 Benchmark]: Boogie Preprocessor took 47.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -153.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2018-12-02 07:05:23,181 INFO L168 Benchmark]: RCFGBuilder took 171.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2018-12-02 07:05:23,182 INFO L168 Benchmark]: TraceAbstraction took 395.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. [2018-12-02 07:05:23,182 INFO L168 Benchmark]: Witness Printer took 2.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 07:05:23,184 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 151.66 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.39 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 939.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -153.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 171.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 395.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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] return x != x; VAL [\old(x)=4294967300, \result=0, x=4294967300] [L72] RET, 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)=4294967302] [L55] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967300] [L27] __uint32_t msw, lsw; VAL [\old(x)=4294967300, x=4294967300] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967300, lsw=4294967297, msw=2146435073, x=4294967300] [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967300, lsw=4294967297, msw=2146435073, x=4294967300] [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967300, lsw=4294967297, msw=2146435073, x=4294967300] [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; VAL [\old(x)=4294967300, \result=0, lsw=4294967297, msw=2146435073, x=4294967300] [L55] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967300, \old(y)=4294967302, __fpclassify_double(x)=0, x=4294967300, y=4294967302] [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; VAL [\old(x)=4294967300, \old(y)=4294967302, \result=4294967302, x=4294967300, y=4294967302] [L74] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4294967302, x=4294967300, y=4294967302] [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x VAL [res=4294967302, x=4294967300, y=4294967302] [L78] __VERIFIER_error() VAL [res=4294967302, x=4294967300, y=4294967302] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s 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, 0.0s 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 0.1.23-635dfa2 [2018-12-02 07:05:24,519 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 07:05:24,520 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 07:05:24,526 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 07:05:24,526 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 07:05:24,526 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 07:05:24,527 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 07:05:24,528 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 07:05:24,529 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 07:05:24,529 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 07:05:24,529 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 07:05:24,530 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 07:05:24,530 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 07:05:24,531 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 07:05:24,531 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 07:05:24,532 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 07:05:24,532 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 07:05:24,533 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 07:05:24,534 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 07:05:24,534 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 07:05:24,535 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 07:05:24,535 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 07:05:24,537 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 07:05:24,537 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 07:05:24,537 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 07:05:24,537 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 07:05:24,538 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 07:05:24,538 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 07:05:24,539 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 07:05:24,539 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 07:05:24,539 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 07:05:24,540 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 07:05:24,540 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 07:05:24,540 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 07:05:24,541 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 07:05:24,541 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 07:05:24,541 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-02 07:05:24,548 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 07:05:24,548 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 07:05:24,549 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 07:05:24,549 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 07:05:24,549 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 07:05:24,549 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 07:05:24,550 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 07:05:24,550 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 07:05:24,550 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 07:05:24,550 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 07:05:24,550 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 07:05:24,550 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 07:05:24,550 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 07:05:24,551 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 07:05:24,551 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 07:05:24,551 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 07:05:24,551 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 07:05:24,551 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 07:05:24,551 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 07:05:24,551 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 07:05:24,551 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 07:05:24,552 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 07:05:24,552 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 07:05:24,552 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 07:05:24,552 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 07:05:24,552 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 07:05:24,552 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 07:05:24,552 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 07:05:24,552 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-02 07:05:24,553 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 07:05:24,553 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 07:05:24,553 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 07:05:24,553 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_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/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 [2018-12-02 07:05:24,572 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 07:05:24,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 07:05:24,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 07:05:24,585 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 07:05:24,585 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 07:05:24,586 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c [2018-12-02 07:05:24,629 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/data/c33e58dde/0182a6fd853b495abf6a2985d916abdb/FLAG3fb4b391b [2018-12-02 07:05:25,013 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 07:05:25,013 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/sv-benchmarks/c/float-newlib/double_req_bl_1251b_true-unreach-call.c [2018-12-02 07:05:25,017 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/data/c33e58dde/0182a6fd853b495abf6a2985d916abdb/FLAG3fb4b391b [2018-12-02 07:05:25,025 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/data/c33e58dde/0182a6fd853b495abf6a2985d916abdb [2018-12-02 07:05:25,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 07:05:25,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 07:05:25,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 07:05:25,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 07:05:25,030 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 07:05:25,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:05:25" (1/1) ... [2018-12-02 07:05:25,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a0bb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:25, skipping insertion in model container [2018-12-02 07:05:25,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:05:25" (1/1) ... [2018-12-02 07:05:25,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 07:05:25,047 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 07:05:25,141 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 07:05:25,144 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 07:05:25,159 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 07:05:25,176 INFO L195 MainTranslator]: Completed translation [2018-12-02 07:05:25,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:25 WrapperNode [2018-12-02 07:05:25,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 07:05:25,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 07:05:25,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 07:05:25,177 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 07:05:25,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:25" (1/1) ... [2018-12-02 07:05:25,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:25" (1/1) ... [2018-12-02 07:05:25,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 07:05:25,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 07:05:25,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 07:05:25,193 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 07:05:25,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:25" (1/1) ... [2018-12-02 07:05:25,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:25" (1/1) ... [2018-12-02 07:05:25,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:25" (1/1) ... [2018-12-02 07:05:25,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:25" (1/1) ... [2018-12-02 07:05:25,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:25" (1/1) ... [2018-12-02 07:05:25,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:25" (1/1) ... [2018-12-02 07:05:25,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:25" (1/1) ... [2018-12-02 07:05:25,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 07:05:25,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 07:05:25,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 07:05:25,213 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 07:05:25,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 07:05:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-02 07:05:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-02 07:05:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-02 07:05:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 07:05:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 07:05:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-02 07:05:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-02 07:05:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 07:05:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 07:05:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-12-02 07:05:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-12-02 07:05:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 07:05:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 07:05:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 07:05:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 07:05:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 07:05:25,379 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 07:05:25,434 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 07:05:25,434 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 07:05:25,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:05:25 BoogieIcfgContainer [2018-12-02 07:05:25,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 07:05:25,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 07:05:25,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 07:05:25,437 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 07:05:25,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:05:25" (1/3) ... [2018-12-02 07:05:25,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52190014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:05:25, skipping insertion in model container [2018-12-02 07:05:25,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:25" (2/3) ... [2018-12-02 07:05:25,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52190014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:05:25, skipping insertion in model container [2018-12-02 07:05:25,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:05:25" (3/3) ... [2018-12-02 07:05:25,439 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b_true-unreach-call.c [2018-12-02 07:05:25,444 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 07:05:25,448 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 07:05:25,457 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 07:05:25,473 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 07:05:25,474 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 07:05:25,474 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 07:05:25,474 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 07:05:25,474 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 07:05:25,474 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 07:05:25,474 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 07:05:25,474 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 07:05:25,474 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 07:05:25,483 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-12-02 07:05:25,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 07:05:25,487 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:25,487 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:25,488 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:25,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:25,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1614855583, now seen corresponding path program 1 times [2018-12-02 07:05:25,494 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:25,494 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-02 07:05:25,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:25,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 07:05:25,561 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:05:25,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:25,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 07:05:25,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 07:05:25,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 07:05:25,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 07:05:25,579 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2018-12-02 07:05:25,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:25,592 INFO L93 Difference]: Finished difference Result 64 states and 86 transitions. [2018-12-02 07:05:25,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 07:05:25,593 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-12-02 07:05:25,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:25,598 INFO L225 Difference]: With dead ends: 64 [2018-12-02 07:05:25,598 INFO L226 Difference]: Without dead ends: 34 [2018-12-02 07:05:25,600 INFO L631 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 [2018-12-02 07:05:25,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-02 07:05:25,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-02 07:05:25,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 07:05:25,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2018-12-02 07:05:25,624 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 25 [2018-12-02 07:05:25,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:25,624 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2018-12-02 07:05:25,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 07:05:25,624 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2018-12-02 07:05:25,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 07:05:25,625 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:25,625 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:25,626 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:25,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:25,626 INFO L82 PathProgramCache]: Analyzing trace with hash 756047800, now seen corresponding path program 1 times [2018-12-02 07:05:25,626 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:25,626 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-02 07:05:25,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:25,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 07:05:25,695 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:05:25,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:25,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 07:05:25,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 07:05:25,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 07:05:25,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:25,704 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 4 states. [2018-12-02 07:05:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:25,735 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-12-02 07:05:25,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 07:05:25,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-02 07:05:25,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:25,737 INFO L225 Difference]: With dead ends: 43 [2018-12-02 07:05:25,737 INFO L226 Difference]: Without dead ends: 37 [2018-12-02 07:05:25,738 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:25,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-02 07:05:25,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-02 07:05:25,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 07:05:25,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-12-02 07:05:25,743 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 26 [2018-12-02 07:05:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:25,743 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-12-02 07:05:25,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 07:05:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-12-02 07:05:25,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-02 07:05:25,743 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:25,744 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:25,744 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:25,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:25,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1333859716, now seen corresponding path program 1 times [2018-12-02 07:05:25,744 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:25,744 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-02 07:05:25,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:25,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 07:05:25,801 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:05:25,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:25,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 07:05:25,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 07:05:25,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 07:05:25,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:25,809 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2018-12-02 07:05:25,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:25,824 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2018-12-02 07:05:25,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 07:05:25,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-02 07:05:25,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:25,825 INFO L225 Difference]: With dead ends: 46 [2018-12-02 07:05:25,826 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 07:05:25,826 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:25,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 07:05:25,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-12-02 07:05:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 07:05:25,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-12-02 07:05:25,830 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 27 [2018-12-02 07:05:25,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:25,830 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-12-02 07:05:25,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 07:05:25,830 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-12-02 07:05:25,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-02 07:05:25,831 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:25,831 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:25,831 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:25,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:25,831 INFO L82 PathProgramCache]: Analyzing trace with hash -868690628, now seen corresponding path program 1 times [2018-12-02 07:05:25,832 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:25,832 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-02 07:05:25,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:25,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 07:05:25,884 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:05:25,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:25,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 07:05:25,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 07:05:25,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 07:05:25,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:25,895 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2018-12-02 07:05:25,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:25,924 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2018-12-02 07:05:25,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 07:05:25,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-02 07:05:25,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:25,926 INFO L225 Difference]: With dead ends: 46 [2018-12-02 07:05:25,926 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 07:05:25,926 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:25,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 07:05:25,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-12-02 07:05:25,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 07:05:25,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-12-02 07:05:25,929 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 28 [2018-12-02 07:05:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:25,930 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-12-02 07:05:25,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 07:05:25,930 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-12-02 07:05:25,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-02 07:05:25,930 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:25,930 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:25,930 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:25,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:25,931 INFO L82 PathProgramCache]: Analyzing trace with hash 931842184, now seen corresponding path program 1 times [2018-12-02 07:05:25,931 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:25,931 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-02 07:05:25,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:25,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:25,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 07:05:25,992 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:05:25,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:25,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 07:05:25,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 07:05:25,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 07:05:25,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:26,000 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 4 states. [2018-12-02 07:05:26,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:26,029 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2018-12-02 07:05:26,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 07:05:26,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-12-02 07:05:26,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:26,030 INFO L225 Difference]: With dead ends: 46 [2018-12-02 07:05:26,030 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 07:05:26,030 INFO L631 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 [2018-12-02 07:05:26,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 07:05:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-12-02 07:05:26,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 07:05:26,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2018-12-02 07:05:26,033 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2018-12-02 07:05:26,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:26,034 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-12-02 07:05:26,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 07:05:26,034 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2018-12-02 07:05:26,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-02 07:05:26,034 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:26,034 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:26,035 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:26,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:26,035 INFO L82 PathProgramCache]: Analyzing trace with hash -875612279, now seen corresponding path program 1 times [2018-12-02 07:05:26,035 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:26,035 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-02 07:05:26,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:26,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:26,178 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 07:05:26,179 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 07:05:26,182 INFO L478 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 [2018-12-02 07:05:26,214 INFO L478 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 24 [2018-12-02 07:05:26,215 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 07:05:26,227 INFO L478 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 [2018-12-02 07:05:26,231 INFO L478 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 [2018-12-02 07:05:26,232 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 07:05:26,234 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 07:05:26,236 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 07:05:26,244 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. [2018-12-02 07:05:26,244 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:46, output treesize:18 [2018-12-02 07:05:26,448 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2018-12-02 07:05:26,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 07:05:26,752 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:05:26,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:26,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-12-02 07:05:26,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-02 07:05:26,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-02 07:05:26,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-12-02 07:05:26,760 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 12 states. [2018-12-02 07:05:28,981 WARN L180 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2018-12-02 07:05:29,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:29,566 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2018-12-02 07:05:29,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 07:05:29,567 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-12-02 07:05:29,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:29,568 INFO L225 Difference]: With dead ends: 54 [2018-12-02 07:05:29,568 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 07:05:29,569 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-12-02 07:05:29,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 07:05:29,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2018-12-02 07:05:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 07:05:29,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-12-02 07:05:29,572 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 29 [2018-12-02 07:05:29,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:29,572 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-12-02 07:05:29,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-02 07:05:29,572 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-12-02 07:05:29,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-02 07:05:29,573 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:29,573 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:29,573 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:29,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:29,574 INFO L82 PathProgramCache]: Analyzing trace with hash 771770225, now seen corresponding path program 1 times [2018-12-02 07:05:29,574 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:29,574 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-12-02 07:05:29,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:29,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 07:05:29,641 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:05:29,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:29,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 07:05:29,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 07:05:29,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 07:05:29,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:29,649 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 4 states. [2018-12-02 07:05:29,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:29,666 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2018-12-02 07:05:29,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 07:05:29,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-12-02 07:05:29,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:29,668 INFO L225 Difference]: With dead ends: 45 [2018-12-02 07:05:29,668 INFO L226 Difference]: Without dead ends: 39 [2018-12-02 07:05:29,668 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:29,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-02 07:05:29,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-02 07:05:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-02 07:05:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-12-02 07:05:29,671 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 34 [2018-12-02 07:05:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:29,671 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-12-02 07:05:29,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 07:05:29,671 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-12-02 07:05:29,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-02 07:05:29,672 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:29,672 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:29,672 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:29,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:29,672 INFO L82 PathProgramCache]: Analyzing trace with hash 111236229, now seen corresponding path program 1 times [2018-12-02 07:05:29,672 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:29,672 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-02 07:05:29,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:29,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 07:05:29,737 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:05:29,745 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:29,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 07:05:29,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 07:05:29,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 07:05:29,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:29,745 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 4 states. [2018-12-02 07:05:29,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:29,767 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-12-02 07:05:29,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 07:05:29,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-12-02 07:05:29,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:29,768 INFO L225 Difference]: With dead ends: 48 [2018-12-02 07:05:29,768 INFO L226 Difference]: Without dead ends: 42 [2018-12-02 07:05:29,768 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:29,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-02 07:05:29,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-12-02 07:05:29,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-02 07:05:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-12-02 07:05:29,773 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 35 [2018-12-02 07:05:29,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:29,773 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-12-02 07:05:29,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 07:05:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-12-02 07:05:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-02 07:05:29,774 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:29,774 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:29,774 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:29,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:29,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1035078318, now seen corresponding path program 1 times [2018-12-02 07:05:29,775 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:29,775 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-12-02 07:05:29,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:29,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:29,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 07:05:29,979 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:05:29,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:29,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 07:05:29,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 07:05:29,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 07:05:29,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 07:05:29,988 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 8 states. [2018-12-02 07:05:30,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:30,548 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2018-12-02 07:05:30,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 07:05:30,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2018-12-02 07:05:30,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:30,549 INFO L225 Difference]: With dead ends: 50 [2018-12-02 07:05:30,549 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 07:05:30,550 INFO L631 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 [2018-12-02 07:05:30,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 07:05:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 07:05:30,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 07:05:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-12-02 07:05:30,553 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 36 [2018-12-02 07:05:30,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:30,553 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-12-02 07:05:30,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 07:05:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-12-02 07:05:30,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-02 07:05:30,553 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:30,553 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:30,554 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:30,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:30,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1825331723, now seen corresponding path program 1 times [2018-12-02 07:05:30,554 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:30,554 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-12-02 07:05:30,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:30,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:30,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 07:05:30,617 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:05:30,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:30,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 07:05:30,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 07:05:30,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 07:05:30,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:30,626 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 4 states. [2018-12-02 07:05:30,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:30,644 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2018-12-02 07:05:30,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 07:05:30,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-12-02 07:05:30,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:30,645 INFO L225 Difference]: With dead ends: 50 [2018-12-02 07:05:30,645 INFO L226 Difference]: Without dead ends: 44 [2018-12-02 07:05:30,645 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:30,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-02 07:05:30,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-12-02 07:05:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 07:05:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-12-02 07:05:30,648 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 36 [2018-12-02 07:05:30,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:30,649 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-12-02 07:05:30,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 07:05:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-12-02 07:05:30,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 07:05:30,649 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:30,649 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:30,649 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:30,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:30,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1917067970, now seen corresponding path program 1 times [2018-12-02 07:05:30,650 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:30,650 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-12-02 07:05:30,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:30,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 07:05:30,875 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:05:30,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:30,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 07:05:30,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 07:05:30,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 07:05:30,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 07:05:30,886 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-12-02 07:05:33,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:33,267 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2018-12-02 07:05:33,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 07:05:33,268 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2018-12-02 07:05:33,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:33,268 INFO L225 Difference]: With dead ends: 52 [2018-12-02 07:05:33,268 INFO L226 Difference]: Without dead ends: 43 [2018-12-02 07:05:33,268 INFO L631 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 [2018-12-02 07:05:33,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-02 07:05:33,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-12-02 07:05:33,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 07:05:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-12-02 07:05:33,271 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 37 [2018-12-02 07:05:33,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:33,271 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-12-02 07:05:33,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 07:05:33,272 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-12-02 07:05:33,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 07:05:33,272 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:33,272 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:33,272 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:33,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:33,272 INFO L82 PathProgramCache]: Analyzing trace with hash -369279351, now seen corresponding path program 1 times [2018-12-02 07:05:33,272 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:33,273 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-12-02 07:05:33,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:33,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 07:05:33,346 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:05:33,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:33,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 07:05:33,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 07:05:33,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 07:05:33,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:33,354 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 4 states. [2018-12-02 07:05:33,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:33,372 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-12-02 07:05:33,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 07:05:33,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-12-02 07:05:33,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:33,372 INFO L225 Difference]: With dead ends: 48 [2018-12-02 07:05:33,373 INFO L226 Difference]: Without dead ends: 42 [2018-12-02 07:05:33,373 INFO L631 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 [2018-12-02 07:05:33,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-02 07:05:33,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-12-02 07:05:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-02 07:05:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-12-02 07:05:33,376 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 37 [2018-12-02 07:05:33,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:33,376 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-12-02 07:05:33,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 07:05:33,376 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-12-02 07:05:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 07:05:33,376 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:33,377 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:33,377 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:33,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:33,377 INFO L82 PathProgramCache]: Analyzing trace with hash 2118233482, now seen corresponding path program 1 times [2018-12-02 07:05:33,377 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:33,377 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-12-02 07:05:33,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:33,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 07:05:33,800 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 07:05:34,103 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-12-02 07:05:34,372 WARN L180 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-12-02 07:05:34,478 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-12-02 07:05:34,686 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-12-02 07:05:35,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 07:05:35,076 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 07:05:35,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:35,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-02 07:05:35,512 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 07:05:36,233 WARN L180 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-12-02 07:05:37,311 WARN L180 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 12 [2018-12-02 07:05:37,933 WARN L180 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-12-02 07:05:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 07:05:38,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-02 07:05:38,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 10] total 22 [2018-12-02 07:05:38,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-02 07:05:38,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-02 07:05:38,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2018-12-02 07:05:38,594 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 22 states. [2018-12-02 07:05:40,155 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-12-02 07:05:40,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:40,222 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2018-12-02 07:05:40,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-02 07:05:40,223 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 37 [2018-12-02 07:05:40,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:40,223 INFO L225 Difference]: With dead ends: 59 [2018-12-02 07:05:40,223 INFO L226 Difference]: Without dead ends: 49 [2018-12-02 07:05:40,224 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2018-12-02 07:05:40,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-12-02 07:05:40,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2018-12-02 07:05:40,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-02 07:05:40,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-12-02 07:05:40,227 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 37 [2018-12-02 07:05:40,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:40,227 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-12-02 07:05:40,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-02 07:05:40,227 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-12-02 07:05:40,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-02 07:05:40,227 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:40,227 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:40,228 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:40,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:40,228 INFO L82 PathProgramCache]: Analyzing trace with hash 596105266, now seen corresponding path program 1 times [2018-12-02 07:05:40,228 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:40,228 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2018-12-02 07:05:40,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:40,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 07:05:40,418 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:05:40,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:40,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 07:05:40,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 07:05:40,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 07:05:40,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 07:05:40,427 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 8 states. [2018-12-02 07:05:41,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:41,882 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2018-12-02 07:05:41,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 07:05:41,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2018-12-02 07:05:41,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:41,884 INFO L225 Difference]: With dead ends: 51 [2018-12-02 07:05:41,884 INFO L226 Difference]: Without dead ends: 42 [2018-12-02 07:05:41,884 INFO L631 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 [2018-12-02 07:05:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-02 07:05:41,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2018-12-02 07:05:41,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-02 07:05:41,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-12-02 07:05:41,887 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 38 [2018-12-02 07:05:41,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:41,887 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-12-02 07:05:41,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 07:05:41,887 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-12-02 07:05:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-02 07:05:41,888 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:41,888 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:41,888 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:41,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:41,888 INFO L82 PathProgramCache]: Analyzing trace with hash -296903738, now seen corresponding path program 1 times [2018-12-02 07:05:41,888 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:41,888 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/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 [2018-12-02 07:05:41,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:41,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:41,991 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 07:05:41,991 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 07:05:41,992 INFO L478 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 [2018-12-02 07:05:42,034 INFO L478 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 [2018-12-02 07:05:42,034 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 07:05:42,048 INFO L478 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 [2018-12-02 07:05:42,054 INFO L478 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 [2018-12-02 07:05:42,055 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 07:05:42,056 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 07:05:42,059 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 07:05:42,069 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. [2018-12-02 07:05:42,069 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:46, output treesize:18 [2018-12-02 07:05:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 07:05:42,186 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:05:42,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:42,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 07:05:42,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 07:05:42,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 07:05:42,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 07:05:42,195 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 8 states. [2018-12-02 07:05:43,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:43,006 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2018-12-02 07:05:43,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 07:05:43,007 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2018-12-02 07:05:43,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:43,008 INFO L225 Difference]: With dead ends: 47 [2018-12-02 07:05:43,008 INFO L226 Difference]: Without dead ends: 38 [2018-12-02 07:05:43,008 INFO L631 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 [2018-12-02 07:05:43,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-02 07:05:43,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-12-02 07:05:43,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 07:05:43,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-12-02 07:05:43,011 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 39 [2018-12-02 07:05:43,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:43,011 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-12-02 07:05:43,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 07:05:43,011 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-12-02 07:05:43,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-02 07:05:43,011 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 07:05:43,011 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 07:05:43,011 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 07:05:43,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 07:05:43,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2093855097, now seen corresponding path program 1 times [2018-12-02 07:05:43,012 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 07:05:43,012 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/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 [2018-12-02 07:05:43,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 07:05:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 07:05:43,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 07:05:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 07:05:43,076 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 07:05:43,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 07:05:43,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 07:05:43,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 07:05:43,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 07:05:43,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 07:05:43,084 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 4 states. [2018-12-02 07:05:43,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 07:05:43,089 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-12-02 07:05:43,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 07:05:43,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-12-02 07:05:43,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 07:05:43,090 INFO L225 Difference]: With dead ends: 36 [2018-12-02 07:05:43,090 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 07:05:43,090 INFO L631 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 [2018-12-02 07:05:43,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 07:05:43,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 07:05:43,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 07:05:43,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 07:05:43,091 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-12-02 07:05:43,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 07:05:43,091 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 07:05:43,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 07:05:43,091 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 07:05:43,091 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 07:05:43,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 07:05:43,225 INFO L451 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-12-02 07:05:43,225 INFO L448 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-12-02 07:05:43,225 INFO L448 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-12-02 07:05:43,225 INFO L448 ceAbstractionStarter]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2018-12-02 07:05:43,225 INFO L444 ceAbstractionStarter]: At program point L29-2(lines 29 34) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2018-12-02 07:05:43,225 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 26 51) no Hoare annotation was computed. [2018-12-02 07:05:43,225 INFO L448 ceAbstractionStarter]: For program point L29-3(lines 26 51) no Hoare annotation was computed. [2018-12-02 07:05:43,225 INFO L448 ceAbstractionStarter]: For program point L46(lines 46 50) no Hoare annotation was computed. [2018-12-02 07:05:43,225 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 26 51) the Hoare annotation is: true [2018-12-02 07:05:43,225 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 50) no Hoare annotation was computed. [2018-12-02 07:05:43,225 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 26 51) no Hoare annotation was computed. [2018-12-02 07:05:43,225 INFO L448 ceAbstractionStarter]: For program point L39(lines 39 50) no Hoare annotation was computed. [2018-12-02 07:05:43,225 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-02 07:05:43,225 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-02 07:05:43,225 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 07:05:43,225 INFO L448 ceAbstractionStarter]: For program point L60(line 60) no Hoare annotation was computed. [2018-12-02 07:05:43,225 INFO L448 ceAbstractionStarter]: For program point L60-2(line 60) no Hoare annotation was computed. [2018-12-02 07:05:43,226 INFO L444 ceAbstractionStarter]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (= fmax_double_~x |fmax_double_#in~x|))) (or (and .cse0 (exists ((v_prenex_24 (_ BitVec 64))) (let ((.cse1 ((_ extract 63 32) v_prenex_24))) (and (not (bvule .cse1 (_ bv2146435071 32))) (= (fp ((_ extract 63 63) v_prenex_24) ((_ extract 62 52) v_prenex_24) ((_ extract 51 0) v_prenex_24)) |fmax_double_#in~x|) (not (= ((_ extract 31 0) v_prenex_24) (_ bv0 32))) (not (bvuge .cse1 (_ bv2147483648 32))))))) (and .cse0 (= fmax_double_~y |fmax_double_#in~y|)))) [2018-12-02 07:05:43,226 INFO L451 ceAbstractionStarter]: At program point fmax_doubleENTRY(lines 53 61) the Hoare annotation is: true [2018-12-02 07:05:43,226 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 57 58) no Hoare annotation was computed. [2018-12-02 07:05:43,226 INFO L444 ceAbstractionStarter]: At program point L55(line 55) the Hoare annotation is: (and (= fmax_double_~x |fmax_double_#in~x|) (= fmax_double_~y |fmax_double_#in~y|)) [2018-12-02 07:05:43,226 INFO L448 ceAbstractionStarter]: For program point L55-1(lines 55 56) no Hoare annotation was computed. [2018-12-02 07:05:43,226 INFO L448 ceAbstractionStarter]: For program point fmax_doubleFINAL(lines 53 61) no Hoare annotation was computed. [2018-12-02 07:05:43,226 INFO L448 ceAbstractionStarter]: For program point fmax_doubleEXIT(lines 53 61) no Hoare annotation was computed. [2018-12-02 07:05:43,226 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 07:05:43,226 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 07:05:43,226 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 07:05:43,226 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 07:05:43,226 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 78) no Hoare annotation was computed. [2018-12-02 07:05:43,226 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 63 84) the Hoare annotation is: true [2018-12-02 07:05:43,226 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 63 84) no Hoare annotation was computed. [2018-12-02 07:05:43,226 INFO L448 ceAbstractionStarter]: For program point L78(line 78) no Hoare annotation was computed. [2018-12-02 07:05:43,226 INFO L448 ceAbstractionStarter]: For program point L77(lines 77 80) no Hoare annotation was computed. [2018-12-02 07:05:43,226 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 63 84) no Hoare annotation was computed. [2018-12-02 07:05:43,226 INFO L444 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)) [2018-12-02 07:05:43,226 INFO L448 ceAbstractionStarter]: For program point L74-1(line 74) no Hoare annotation was computed. [2018-12-02 07:05:43,226 INFO L444 ceAbstractionStarter]: At program point L72(line 72) the Hoare annotation is: (= main_~y~0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53))) [2018-12-02 07:05:43,227 INFO L448 ceAbstractionStarter]: For program point L72-1(lines 72 81) no Hoare annotation was computed. [2018-12-02 07:05:43,227 INFO L448 ceAbstractionStarter]: For program point L72-3(lines 72 81) no Hoare annotation was computed. [2018-12-02 07:05:43,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:05:43 BoogieIcfgContainer [2018-12-02 07:05:43,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 07:05:43,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 07:05:43,234 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 07:05:43,234 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 07:05:43,235 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:05:25" (3/4) ... [2018-12-02 07:05:43,237 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 07:05:43,241 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-12-02 07:05:43,241 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-12-02 07:05:43,241 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 07:05:43,241 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_double [2018-12-02 07:05:43,241 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 07:05:43,244 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-12-02 07:05:43,244 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-02 07:05:43,245 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 07:05:43,260 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-02 07:05:43,274 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3e923517-b1fb-48bd-a0ef-0c4a6108d96c/bin-2019/uautomizer/witness.graphml [2018-12-02 07:05:43,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 07:05:43,275 INFO L168 Benchmark]: Toolchain (without parser) took 18247.62 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 288.9 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -297.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 07:05:43,275 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 07:05:43,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.78 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-02 07:05:43,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.75 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 07:05:43,276 INFO L168 Benchmark]: Boogie Preprocessor took 19.78 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 07:05:43,276 INFO L168 Benchmark]: RCFGBuilder took 221.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -172.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-12-02 07:05:43,277 INFO L168 Benchmark]: TraceAbstraction took 17798.93 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 159.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -142.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. [2018-12-02 07:05:43,277 INFO L168 Benchmark]: Witness Printer took 40.19 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: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-12-02 07:05:43,279 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 148.78 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.75 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.78 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 221.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -172.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17798.93 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 159.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -142.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. * Witness Printer took 40.19 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: 24 B). Peak memory consumption was 24 B. 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, 17.7s OverallTime, 16 OverallIterations, 2 TraceHistogramMax, 9.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 572 SDtfs, 229 SDslu, 1537 SDs, 0 SdLazy, 850 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 637 GetRequests, 538 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 16 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, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 569 NumberOfCodeBlocks, 569 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 588 ConstructedInterpolants, 63 QuantifiedInterpolants, 100392 SizeOfPredicates, 36 NumberOfNonLiveVariables, 1670 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 18 InterpolantComputations, 16 PerfectInterpolantSequences, 66/72 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...