./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 ................................................................................................................................................................................................................................................................................................................................................................................. 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_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 12:11:13,105 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 12:11:13,106 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 12:11:13,115 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 12:11:13,115 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 12:11:13,116 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 12:11:13,117 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 12:11:13,118 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 12:11:13,119 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 12:11:13,120 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 12:11:13,120 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 12:11:13,121 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 12:11:13,121 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 12:11:13,122 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 12:11:13,122 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 12:11:13,123 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 12:11:13,123 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 12:11:13,125 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 12:11:13,126 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 12:11:13,127 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 12:11:13,128 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 12:11:13,128 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 12:11:13,129 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 12:11:13,130 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 12:11:13,130 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 12:11:13,130 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 12:11:13,131 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 12:11:13,131 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 12:11:13,132 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 12:11:13,133 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 12:11:13,133 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 12:11:13,133 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 12:11:13,133 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 12:11:13,133 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 12:11:13,134 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 12:11:13,134 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 12:11:13,134 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 12:11:13,142 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 12:11:13,142 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 12:11:13,142 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 12:11:13,143 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 12:11:13,143 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 12:11:13,143 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 12:11:13,143 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 12:11:13,143 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 12:11:13,144 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 12:11:13,144 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 12:11:13,144 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 12:11:13,144 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 12:11:13,144 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 12:11:13,144 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 12:11:13,144 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 12:11:13,144 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 12:11:13,145 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 12:11:13,145 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 12:11:13,145 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 12:11:13,145 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 12:11:13,145 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 12:11:13,145 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 12:11:13,145 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 12:11:13,145 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 12:11:13,145 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 12:11:13,145 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 12:11:13,145 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 12:11:13,145 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 12:11:13,146 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 12:11:13,146 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_f16c3134-6921-486c-83b9-0839b1a36d6f/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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2018-11-10 12:11:13,170 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 12:11:13,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 12:11:13,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 12:11:13,184 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 12:11:13,184 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 12:11:13,184 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-10 12:11:13,231 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/data/900271422/14faedf50dec4192a454e76a6a0f13a9/FLAGaaac59a0a [2018-11-10 12:11:13,530 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 12:11:13,531 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-10 12:11:13,535 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/data/900271422/14faedf50dec4192a454e76a6a0f13a9/FLAGaaac59a0a [2018-11-10 12:11:13,545 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/data/900271422/14faedf50dec4192a454e76a6a0f13a9 [2018-11-10 12:11:13,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 12:11:13,549 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 12:11:13,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 12:11:13,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 12:11:13,553 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 12:11:13,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:11:13" (1/1) ... [2018-11-10 12:11:13,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a6ac25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:13, skipping insertion in model container [2018-11-10 12:11:13,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:11:13" (1/1) ... [2018-11-10 12:11:13,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 12:11:13,577 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 12:11:13,687 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:11:13,689 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 12:11:13,704 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:11:13,716 INFO L193 MainTranslator]: Completed translation [2018-11-10 12:11:13,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:13 WrapperNode [2018-11-10 12:11:13,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 12:11:13,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 12:11:13,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 12:11:13,717 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 12:11:13,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:13" (1/1) ... [2018-11-10 12:11:13,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:13" (1/1) ... [2018-11-10 12:11:13,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:13" (1/1) ... [2018-11-10 12:11:13,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:13" (1/1) ... [2018-11-10 12:11:13,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:13" (1/1) ... [2018-11-10 12:11:13,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:13" (1/1) ... [2018-11-10 12:11:13,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:13" (1/1) ... [2018-11-10 12:11:13,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 12:11:13,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 12:11:13,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 12:11:13,745 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 12:11:13,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 12:11:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 12:11:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 12:11:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-10 12:11:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-10 12:11:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-10 12:11:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 12:11:13,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 12:11:13,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-10 12:11:13,822 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-10 12:11:13,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 12:11:13,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-10 12:11:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 12:11:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 12:11:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-10 12:11:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-10 12:11:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 12:11:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 12:11:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 12:11:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 12:11:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 12:11:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-10 12:11:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-10 12:11:14,040 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 12:11:14,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:11:14 BoogieIcfgContainer [2018-11-10 12:11:14,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 12:11:14,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 12:11:14,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 12:11:14,046 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 12:11:14,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:11:13" (1/3) ... [2018-11-10 12:11:14,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1050106c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:11:14, skipping insertion in model container [2018-11-10 12:11:14,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:13" (2/3) ... [2018-11-10 12:11:14,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1050106c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:11:14, skipping insertion in model container [2018-11-10 12:11:14,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:11:14" (3/3) ... [2018-11-10 12:11:14,049 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-11-10 12:11:14,055 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 12:11:14,060 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 12:11:14,070 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 12:11:14,091 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 12:11:14,091 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 12:11:14,091 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 12:11:14,091 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 12:11:14,092 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 12:11:14,092 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 12:11:14,092 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 12:11:14,092 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 12:11:14,092 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 12:11:14,107 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-11-10 12:11:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 12:11:14,112 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:11:14,112 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:11:14,114 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:11:14,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:11:14,119 INFO L82 PathProgramCache]: Analyzing trace with hash -678868765, now seen corresponding path program 1 times [2018-11-10 12:11:14,120 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:11:14,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:11:14,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:11:14,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:11:14,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:11:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:11:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:11:14,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:11:14,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 12:11:14,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 12:11:14,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 12:11:14,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 12:11:14,233 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-11-10 12:11:14,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:11:14,252 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2018-11-10 12:11:14,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 12:11:14,253 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-10 12:11:14,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:11:14,259 INFO L225 Difference]: With dead ends: 111 [2018-11-10 12:11:14,260 INFO L226 Difference]: Without dead ends: 56 [2018-11-10 12:11:14,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 12:11:14,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-10 12:11:14,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-11-10 12:11:14,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-10 12:11:14,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2018-11-10 12:11:14,290 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 22 [2018-11-10 12:11:14,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:11:14,291 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2018-11-10 12:11:14,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 12:11:14,291 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2018-11-10 12:11:14,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-10 12:11:14,292 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:11:14,292 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:11:14,293 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:11:14,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:11:14,293 INFO L82 PathProgramCache]: Analyzing trace with hash -232558112, now seen corresponding path program 1 times [2018-11-10 12:11:14,293 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:11:14,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:11:14,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:11:14,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:11:14,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:11:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:11:14,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:11:14,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:11:14,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 12:11:14,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 12:11:14,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 12:11:14,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:11:14,360 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2018-11-10 12:11:14,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:11:14,399 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2018-11-10 12:11:14,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 12:11:14,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-11-10 12:11:14,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:11:14,401 INFO L225 Difference]: With dead ends: 83 [2018-11-10 12:11:14,401 INFO L226 Difference]: Without dead ends: 60 [2018-11-10 12:11:14,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:11:14,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-10 12:11:14,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-11-10 12:11:14,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-10 12:11:14,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-11-10 12:11:14,408 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 31 [2018-11-10 12:11:14,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:11:14,408 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-11-10 12:11:14,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 12:11:14,408 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-11-10 12:11:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-10 12:11:14,409 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:11:14,409 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:11:14,409 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:11:14,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:11:14,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1859597870, now seen corresponding path program 1 times [2018-11-10 12:11:14,409 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:11:14,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:11:14,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:11:14,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:11:14,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:11:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:11:14,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:11:14,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:11:14,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 12:11:14,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 12:11:14,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 12:11:14,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:11:14,461 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 4 states. [2018-11-10 12:11:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:11:14,495 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2018-11-10 12:11:14,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 12:11:14,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-10 12:11:14,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:11:14,497 INFO L225 Difference]: With dead ends: 87 [2018-11-10 12:11:14,497 INFO L226 Difference]: Without dead ends: 64 [2018-11-10 12:11:14,498 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:11:14,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-10 12:11:14,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-11-10 12:11:14,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-10 12:11:14,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-11-10 12:11:14,504 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 34 [2018-11-10 12:11:14,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:11:14,504 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-11-10 12:11:14,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 12:11:14,504 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-11-10 12:11:14,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-10 12:11:14,505 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:11:14,505 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:11:14,505 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:11:14,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:11:14,505 INFO L82 PathProgramCache]: Analyzing trace with hash 62646511, now seen corresponding path program 1 times [2018-11-10 12:11:14,506 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:11:14,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:11:14,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:11:14,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:11:14,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:11:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:11:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:11:14,552 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 12:11:14,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 12:11:14 BoogieIcfgContainer [2018-11-10 12:11:14,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 12:11:14,572 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 12:11:14,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 12:11:14,572 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 12:11:14,573 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:11:14" (3/4) ... [2018-11-10 12:11:14,576 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 12:11:14,576 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 12:11:14,576 INFO L168 Benchmark]: Toolchain (without parser) took 1028.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -122.0 MB). Peak memory consumption was 35.3 MB. Max. memory is 11.5 GB. [2018-11-10 12:11:14,577 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:11:14,578 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.49 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:11:14,578 INFO L168 Benchmark]: Boogie Preprocessor took 27.40 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:11:14,579 INFO L168 Benchmark]: RCFGBuilder took 295.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -184.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:11:14,579 INFO L168 Benchmark]: TraceAbstraction took 530.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 49.0 MB). Peak memory consumption was 49.0 MB. Max. memory is 11.5 GB. [2018-11-10 12:11:14,580 INFO L168 Benchmark]: Witness Printer took 3.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:11:14,582 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 167.49 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.40 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 295.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -184.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 530.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 49.0 MB). Peak memory consumption was 49.0 MB. Max. memory is 11.5 GB. * Witness Printer took 3.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0, \old(y)=4286578690] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L21] __uint32_t w; VAL [\old(x)=0, x=0] [L24] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0, gf_u={4286578694:0}, x=0] [L25] FCALL gf_u.value = (x) VAL [\old(x)=0, gf_u={4286578694:0}, x=0] [L26] EXPR, FCALL gf_u.word VAL [\old(x)=0, gf_u={4286578694:0}, gf_u.word=4286578689, x=0] [L26] (w) = gf_u.word [L27] COND FALSE !(0) VAL [\old(x)=0, w=4286578689, x=0] [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] RET return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L44] EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578690, __fpclassify_float(x)=0, x=0, y=4286578690] [L44] COND TRUE __fpclassify_float(x) == 0 [L45] RET return y; VAL [\old(x)=0, \old(y)=4286578690, \result=4286578690, x=0, y=4286578690] [L75] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578690, x=0, y=4286578690] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=4286578690, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4286578690] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=4286578690, x=0, y=4286578690] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 197 SDtfs, 0 SDslu, 242 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=60occurred 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, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 2934 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 0.1.23-1dbac8b [2018-11-10 12:11:16,095 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 12:11:16,096 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 12:11:16,105 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 12:11:16,106 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 12:11:16,106 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 12:11:16,107 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 12:11:16,109 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 12:11:16,110 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 12:11:16,110 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 12:11:16,111 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 12:11:16,111 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 12:11:16,112 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 12:11:16,113 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 12:11:16,114 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 12:11:16,115 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 12:11:16,116 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 12:11:16,117 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 12:11:16,119 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 12:11:16,120 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 12:11:16,121 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 12:11:16,122 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 12:11:16,124 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 12:11:16,124 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 12:11:16,124 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 12:11:16,125 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 12:11:16,126 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 12:11:16,127 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 12:11:16,127 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 12:11:16,128 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 12:11:16,128 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 12:11:16,129 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 12:11:16,129 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 12:11:16,129 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 12:11:16,131 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 12:11:16,131 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 12:11:16,131 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-10 12:11:16,142 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 12:11:16,142 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 12:11:16,143 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 12:11:16,143 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 12:11:16,143 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 12:11:16,143 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 12:11:16,144 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 12:11:16,144 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 12:11:16,144 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 12:11:16,144 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 12:11:16,144 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 12:11:16,144 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 12:11:16,144 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 12:11:16,145 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 12:11:16,145 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 12:11:16,145 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 12:11:16,145 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 12:11:16,145 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 12:11:16,145 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 12:11:16,145 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 12:11:16,147 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 12:11:16,147 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 12:11:16,147 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 12:11:16,147 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 12:11:16,148 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 12:11:16,148 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 12:11:16,148 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 12:11:16,148 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-10 12:11:16,148 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 12:11:16,148 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 12:11:16,148 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 12:11:16,149 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_f16c3134-6921-486c-83b9-0839b1a36d6f/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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2018-11-10 12:11:16,179 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 12:11:16,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 12:11:16,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 12:11:16,193 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 12:11:16,193 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 12:11:16,194 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-10 12:11:16,233 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/data/315078441/20d26168236e4305970318de825ff7f2/FLAG04dc59090 [2018-11-10 12:11:16,560 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 12:11:16,560 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-10 12:11:16,564 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/data/315078441/20d26168236e4305970318de825ff7f2/FLAG04dc59090 [2018-11-10 12:11:16,575 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/data/315078441/20d26168236e4305970318de825ff7f2 [2018-11-10 12:11:16,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 12:11:16,577 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 12:11:16,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 12:11:16,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 12:11:16,581 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 12:11:16,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:11:16" (1/1) ... [2018-11-10 12:11:16,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f8d760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:16, skipping insertion in model container [2018-11-10 12:11:16,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:11:16" (1/1) ... [2018-11-10 12:11:16,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 12:11:16,605 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 12:11:16,730 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:11:16,733 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 12:11:16,750 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:11:16,768 INFO L193 MainTranslator]: Completed translation [2018-11-10 12:11:16,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:16 WrapperNode [2018-11-10 12:11:16,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 12:11:16,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 12:11:16,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 12:11:16,769 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 12:11:16,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:16" (1/1) ... [2018-11-10 12:11:16,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:16" (1/1) ... [2018-11-10 12:11:16,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:16" (1/1) ... [2018-11-10 12:11:16,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:16" (1/1) ... [2018-11-10 12:11:16,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:16" (1/1) ... [2018-11-10 12:11:16,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:16" (1/1) ... [2018-11-10 12:11:16,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:16" (1/1) ... [2018-11-10 12:11:16,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 12:11:16,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 12:11:16,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 12:11:16,802 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 12:11:16,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 12:11:16,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 12:11:16,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 12:11:16,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-10 12:11:16,889 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-10 12:11:16,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-10 12:11:16,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 12:11:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 12:11:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-10 12:11:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-10 12:11:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 12:11:16,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-10 12:11:16,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-10 12:11:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 12:11:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-10 12:11:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-10 12:11:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 12:11:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 12:11:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 12:11:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-11-10 12:11:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-10 12:11:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-10 12:11:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-10 12:11:17,060 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-10 12:11:17,081 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-10 12:11:17,103 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-10 12:11:17,108 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-10 12:11:17,113 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 12:11:17,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:11:17 BoogieIcfgContainer [2018-11-10 12:11:17,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 12:11:17,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 12:11:17,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 12:11:17,116 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 12:11:17,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:11:16" (1/3) ... [2018-11-10 12:11:17,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296f7532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:11:17, skipping insertion in model container [2018-11-10 12:11:17,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:11:16" (2/3) ... [2018-11-10 12:11:17,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296f7532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:11:17, skipping insertion in model container [2018-11-10 12:11:17,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:11:17" (3/3) ... [2018-11-10 12:11:17,119 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-11-10 12:11:17,125 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 12:11:17,130 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 12:11:17,140 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 12:11:17,159 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 12:11:17,160 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 12:11:17,160 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 12:11:17,160 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 12:11:17,160 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 12:11:17,160 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 12:11:17,160 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 12:11:17,160 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 12:11:17,161 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 12:11:17,171 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-11-10 12:11:17,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 12:11:17,175 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:11:17,176 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:11:17,178 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:11:17,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:11:17,181 INFO L82 PathProgramCache]: Analyzing trace with hash 552591758, now seen corresponding path program 1 times [2018-11-10 12:11:17,184 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 12:11:17,184 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-10 12:11:17,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:11:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:11:17,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:11:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:11:17,253 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 12:11:17,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:11:17,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 12:11:17,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 12:11:17,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 12:11:17,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 12:11:17,274 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-11-10 12:11:17,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:11:17,292 INFO L93 Difference]: Finished difference Result 107 states and 135 transitions. [2018-11-10 12:11:17,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 12:11:17,293 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-10 12:11:17,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:11:17,299 INFO L225 Difference]: With dead ends: 107 [2018-11-10 12:11:17,299 INFO L226 Difference]: Without dead ends: 54 [2018-11-10 12:11:17,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 12:11:17,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-10 12:11:17,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-11-10 12:11:17,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-10 12:11:17,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-11-10 12:11:17,339 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 21 [2018-11-10 12:11:17,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:11:17,340 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-11-10 12:11:17,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 12:11:17,340 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-11-10 12:11:17,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-10 12:11:17,342 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:11:17,342 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:11:17,342 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:11:17,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:11:17,343 INFO L82 PathProgramCache]: Analyzing trace with hash 876629051, now seen corresponding path program 1 times [2018-11-10 12:11:17,343 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 12:11:17,344 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-10 12:11:17,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:11:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:11:17,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:11:17,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:11:17,425 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 12:11:17,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:11:17,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 12:11:17,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 12:11:17,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 12:11:17,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:11:17,437 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 4 states. [2018-11-10 12:11:17,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:11:17,458 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2018-11-10 12:11:17,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 12:11:17,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-10 12:11:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:11:17,461 INFO L225 Difference]: With dead ends: 80 [2018-11-10 12:11:17,461 INFO L226 Difference]: Without dead ends: 57 [2018-11-10 12:11:17,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:11:17,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-10 12:11:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-11-10 12:11:17,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-10 12:11:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2018-11-10 12:11:17,470 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 30 [2018-11-10 12:11:17,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:11:17,470 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2018-11-10 12:11:17,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 12:11:17,471 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2018-11-10 12:11:17,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-10 12:11:17,472 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:11:17,472 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:11:17,472 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:11:17,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:11:17,473 INFO L82 PathProgramCache]: Analyzing trace with hash 2005374951, now seen corresponding path program 1 times [2018-11-10 12:11:17,473 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 12:11:17,473 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-10 12:11:17,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:11:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:11:17,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:11:17,596 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 11 treesize of output 8 [2018-11-10 12:11:17,600 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-10 12:11:17,600 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 12:11:17,604 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 12:11:17,622 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 12:11:17,623 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-11-10 12:11:17,651 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-11-10 12:11:17,654 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-11-10 12:11:17,654 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 12:11:17,656 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 12:11:17,658 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 12:11:17,659 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-11-10 12:11:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:11:17,755 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 12:11:17,765 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:11:17,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-10 12:11:17,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 12:11:17,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 12:11:17,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-10 12:11:17,766 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 10 states. [2018-11-10 12:11:18,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:11:18,505 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2018-11-10 12:11:18,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 12:11:18,506 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-11-10 12:11:18,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:11:18,507 INFO L225 Difference]: With dead ends: 84 [2018-11-10 12:11:18,507 INFO L226 Difference]: Without dead ends: 56 [2018-11-10 12:11:18,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-11-10 12:11:18,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-10 12:11:18,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-11-10 12:11:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-10 12:11:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-11-10 12:11:18,512 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 31 [2018-11-10 12:11:18,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:11:18,512 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-11-10 12:11:18,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 12:11:18,512 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-11-10 12:11:18,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-10 12:11:18,513 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:11:18,513 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:11:18,513 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:11:18,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:11:18,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1989940013, now seen corresponding path program 1 times [2018-11-10 12:11:18,514 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 12:11:18,514 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-10 12:11:18,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:11:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:11:18,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:11:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-10 12:11:18,571 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 12:11:18,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:11:18,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 12:11:18,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 12:11:18,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 12:11:18,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:11:18,579 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 4 states. [2018-11-10 12:11:18,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:11:18,595 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2018-11-10 12:11:18,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 12:11:18,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-11-10 12:11:18,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:11:18,596 INFO L225 Difference]: With dead ends: 80 [2018-11-10 12:11:18,597 INFO L226 Difference]: Without dead ends: 57 [2018-11-10 12:11:18,597 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:11:18,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-10 12:11:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-11-10 12:11:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-10 12:11:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2018-11-10 12:11:18,601 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 46 [2018-11-10 12:11:18,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:11:18,601 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2018-11-10 12:11:18,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 12:11:18,601 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2018-11-10 12:11:18,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-10 12:11:18,602 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:11:18,602 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:11:18,602 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:11:18,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:11:18,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1865076213, now seen corresponding path program 1 times [2018-11-10 12:11:18,603 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 12:11:18,603 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-10 12:11:18,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:11:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:11:18,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:11:18,675 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 11 treesize of output 8 [2018-11-10 12:11:18,678 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-10 12:11:18,678 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 12:11:18,680 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 12:11:18,687 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 12:11:18,687 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-11-10 12:11:18,702 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-11-10 12:11:18,705 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-11-10 12:11:18,705 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 12:11:18,707 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 12:11:18,709 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 12:11:18,709 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-11-10 12:11:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 12:11:18,806 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 12:11:18,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:11:18,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-10 12:11:18,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 12:11:18,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 12:11:18,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-10 12:11:18,814 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2018-11-10 12:11:19,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:11:19,530 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2018-11-10 12:11:19,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 12:11:19,531 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2018-11-10 12:11:19,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:11:19,532 INFO L225 Difference]: With dead ends: 82 [2018-11-10 12:11:19,532 INFO L226 Difference]: Without dead ends: 51 [2018-11-10 12:11:19,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-11-10 12:11:19,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-10 12:11:19,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-10 12:11:19,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-10 12:11:19,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-11-10 12:11:19,538 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-11-10 12:11:19,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:11:19,538 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-11-10 12:11:19,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 12:11:19,539 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-11-10 12:11:19,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-10 12:11:19,540 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:11:19,540 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:11:19,541 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:11:19,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:11:19,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1338435274, now seen corresponding path program 1 times [2018-11-10 12:11:19,541 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 12:11:19,542 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-10 12:11:19,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:11:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:11:19,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:11:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-10 12:11:19,677 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 12:11:19,688 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:11:19,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-10 12:11:19,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 12:11:19,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 12:11:19,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-10 12:11:19,688 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 8 states. [2018-11-10 12:11:19,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:11:19,825 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-11-10 12:11:19,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 12:11:19,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2018-11-10 12:11:19,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:11:19,826 INFO L225 Difference]: With dead ends: 59 [2018-11-10 12:11:19,826 INFO L226 Difference]: Without dead ends: 56 [2018-11-10 12:11:19,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-10 12:11:19,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-10 12:11:19,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-11-10 12:11:19,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-10 12:11:19,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-11-10 12:11:19,830 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 48 [2018-11-10 12:11:19,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:11:19,830 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-11-10 12:11:19,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 12:11:19,830 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-11-10 12:11:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-10 12:11:19,831 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:11:19,831 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:11:19,831 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:11:19,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:11:19,831 INFO L82 PathProgramCache]: Analyzing trace with hash -529088648, now seen corresponding path program 1 times [2018-11-10 12:11:19,832 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 12:11:19,832 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-10 12:11:19,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:11:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:11:19,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:11:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-10 12:11:19,918 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 12:11:19,925 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:11:19,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 12:11:19,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 12:11:19,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 12:11:19,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 12:11:19,926 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 5 states. [2018-11-10 12:11:19,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:11:19,981 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2018-11-10 12:11:19,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 12:11:19,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2018-11-10 12:11:19,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:11:19,983 INFO L225 Difference]: With dead ends: 75 [2018-11-10 12:11:19,983 INFO L226 Difference]: Without dead ends: 51 [2018-11-10 12:11:19,983 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 12:11:19,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-10 12:11:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-10 12:11:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-10 12:11:19,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-11-10 12:11:19,987 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-11-10 12:11:19,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:11:19,988 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-11-10 12:11:19,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 12:11:19,988 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-11-10 12:11:19,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-10 12:11:19,989 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:11:19,989 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:11:19,989 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 12:11:19,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:11:19,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1111146332, now seen corresponding path program 1 times [2018-11-10 12:11:19,990 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 12:11:19,990 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-10 12:11:19,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:11:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:11:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 12:11:20,138 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 12:11:20,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 12:11:20 BoogieIcfgContainer [2018-11-10 12:11:20,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 12:11:20,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 12:11:20,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 12:11:20,172 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 12:11:20,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:11:17" (3/4) ... [2018-11-10 12:11:20,174 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 12:11:20,233 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f16c3134-6921-486c-83b9-0839b1a36d6f/bin-2019/uautomizer/witness.graphml [2018-11-10 12:11:20,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 12:11:20,234 INFO L168 Benchmark]: Toolchain (without parser) took 3657.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 949.7 MB in the beginning and 826.0 MB in the end (delta: 123.8 MB). Peak memory consumption was 262.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:11:20,235 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:11:20,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 191.11 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 933.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-10 12:11:20,236 INFO L168 Benchmark]: Boogie Preprocessor took 31.89 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:11:20,236 INFO L168 Benchmark]: RCFGBuilder took 312.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2018-11-10 12:11:20,236 INFO L168 Benchmark]: TraceAbstraction took 3057.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 826.0 MB in the end (delta: 284.3 MB). Peak memory consumption was 284.3 MB. Max. memory is 11.5 GB. [2018-11-10 12:11:20,237 INFO L168 Benchmark]: Witness Printer took 61.43 ms. Allocated memory is still 1.2 GB. Free memory is still 826.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:11:20,239 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 191.11 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 933.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.89 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 312.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3057.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 826.0 MB in the end (delta: 284.3 MB). Peak memory consumption was 284.3 MB. Max. memory is 11.5 GB. * Witness Printer took 61.43 ms. Allocated memory is still 1.2 GB. Free memory is still 826.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 79]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0.0, y=0.0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L25] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L26] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={3:0}, gf_u.word=0, x=0.0] [L26] (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={3:0}, gf_u.word=0, w=0, x=0.0] [L27] COND FALSE !(0) VAL [\old(x)=0.0, w=0, x=0.0] [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] RET return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L44] EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L44] COND FALSE !(__fpclassify_float(x) == 0) [L48] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L25] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={3:0}, x=0.0] [L26] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={3:0}, gf_u.word=-2147483648, x=0.0] [L26] (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={3:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L27] COND FALSE !(0) VAL [\old(x)=0.0, w=2147483648, x=0.0] [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] RET return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L48] EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L48] COND FALSE !(__fpclassify_float(y) == 0) [L51] COND FALSE, EXPR !(x > y ? x : y) VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x > y ? x : y=0.0, y=0.0] [L51] RET return x > y ? x : y; [L75] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=0.0, x=0.0, y=0.0] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L55] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L58] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L59] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L60] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, x=0.0] [L60] (w) = gf_u.word [L61] COND FALSE !(0) VAL [\old(x)=0.0, w=2147483648, x=0.0] [L63] RET return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=1, w=2147483648, x=0.0] [L78] EXPR __signbit_float(res) VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=0, x=0.0, y=0.0] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. UNSAFE Result, 3.0s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 382 SDtfs, 125 SDslu, 1266 SDs, 0 SdLazy, 433 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 264 ConstructedInterpolants, 12 QuantifiedInterpolants, 28345 SizeOfPredicates, 23 NumberOfNonLiveVariables, 599 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 56/56 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...