./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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/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_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/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_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/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_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/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 0.1.23-5842f4b [2018-11-18 13:03:14,147 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:03:14,149 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:03:14,158 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:03:14,158 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:03:14,159 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:03:14,161 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:03:14,162 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:03:14,163 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:03:14,163 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:03:14,165 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:03:14,165 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:03:14,165 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:03:14,166 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:03:14,167 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:03:14,170 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:03:14,170 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:03:14,172 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:03:14,173 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:03:14,174 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:03:14,175 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:03:14,176 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:03:14,185 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:03:14,185 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:03:14,185 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:03:14,186 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:03:14,187 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:03:14,187 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:03:14,188 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:03:14,189 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:03:14,189 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:03:14,189 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:03:14,189 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:03:14,190 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:03:14,190 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:03:14,191 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:03:14,191 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 13:03:14,205 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:03:14,205 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:03:14,206 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:03:14,206 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 13:03:14,206 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:03:14,206 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:03:14,206 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:03:14,207 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:03:14,207 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:03:14,207 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:03:14,207 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:03:14,207 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:03:14,207 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:03:14,207 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:03:14,208 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:03:14,208 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:03:14,208 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:03:14,208 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:03:14,208 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:03:14,208 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:03:14,209 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:03:14,209 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:03:14,209 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:03:14,209 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:03:14,209 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:03:14,209 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:03:14,209 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:03:14,210 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 13:03:14,210 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:03:14,210 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:03:14,210 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_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/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 [2018-11-18 13:03:14,248 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:03:14,258 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:03:14,269 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:03:14,270 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:03:14,270 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:03:14,271 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-18 13:03:14,326 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/data/d70435243/71143a03ceea425590c5ad50509310fa/FLAGabbcfbcd2 [2018-11-18 13:03:14,685 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:03:14,685 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-18 13:03:14,690 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/data/d70435243/71143a03ceea425590c5ad50509310fa/FLAGabbcfbcd2 [2018-11-18 13:03:14,702 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/data/d70435243/71143a03ceea425590c5ad50509310fa [2018-11-18 13:03:14,705 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:03:14,706 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 13:03:14,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:03:14,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:03:14,709 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:03:14,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:03:14" (1/1) ... [2018-11-18 13:03:14,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b89f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:14, skipping insertion in model container [2018-11-18 13:03:14,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:03:14" (1/1) ... [2018-11-18 13:03:14,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:03:14,733 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:03:14,852 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:03:14,855 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:03:14,872 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:03:14,887 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:03:14,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:14 WrapperNode [2018-11-18 13:03:14,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:03:14,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:03:14,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:03:14,888 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:03:14,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:14" (1/1) ... [2018-11-18 13:03:14,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:14" (1/1) ... [2018-11-18 13:03:14,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:14" (1/1) ... [2018-11-18 13:03:14,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:14" (1/1) ... [2018-11-18 13:03:14,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:14" (1/1) ... [2018-11-18 13:03:14,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:14" (1/1) ... [2018-11-18 13:03:14,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:14" (1/1) ... [2018-11-18 13:03:14,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:03:14,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:03:14,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:03:14,921 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:03:14,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:03:15,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:03:15,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:03:15,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-18 13:03:15,030 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-18 13:03:15,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-18 13:03:15,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 13:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-18 13:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-18 13:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 13:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 13:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-18 13:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-18 13:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-18 13:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 13:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 13:03:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 13:03:15,435 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:03:15,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:03:15 BoogieIcfgContainer [2018-11-18 13:03:15,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:03:15,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:03:15,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:03:15,440 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:03:15,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:03:14" (1/3) ... [2018-11-18 13:03:15,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd8c241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:03:15, skipping insertion in model container [2018-11-18 13:03:15,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:14" (2/3) ... [2018-11-18 13:03:15,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd8c241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:03:15, skipping insertion in model container [2018-11-18 13:03:15,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:03:15" (3/3) ... [2018-11-18 13:03:15,443 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-11-18 13:03:15,465 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:03:15,471 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:03:15,500 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:03:15,547 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:03:15,547 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:03:15,547 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:03:15,547 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:03:15,547 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:03:15,548 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:03:15,548 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:03:15,548 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:03:15,548 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:03:15,562 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-18 13:03:15,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 13:03:15,568 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:15,569 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] [2018-11-18 13:03:15,570 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:15,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:15,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1502488581, now seen corresponding path program 1 times [2018-11-18 13:03:15,577 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:03:15,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:03:15,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:15,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:15,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:03:15,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:15,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:03:15,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:03:15,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:03:15,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:03:15,712 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-18 13:03:15,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:15,737 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-11-18 13:03:15,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:03:15,738 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-18 13:03:15,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:15,747 INFO L225 Difference]: With dead ends: 79 [2018-11-18 13:03:15,747 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 13:03:15,750 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:03:15,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 13:03:15,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 13:03:15,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 13:03:15,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-18 13:03:15,785 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-11-18 13:03:15,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:15,785 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-18 13:03:15,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:03:15,786 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-18 13:03:15,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 13:03:15,787 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:15,788 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] [2018-11-18 13:03:15,788 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:15,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:15,788 INFO L82 PathProgramCache]: Analyzing trace with hash -371303276, now seen corresponding path program 1 times [2018-11-18 13:03:15,788 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:03:15,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:03:15,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:15,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:15,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:03:15,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:15,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 13:03:15,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:03:15,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:03:15,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:03:15,873 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-18 13:03:15,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:15,912 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-11-18 13:03:15,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:03:15,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-18 13:03:15,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:15,914 INFO L225 Difference]: With dead ends: 59 [2018-11-18 13:03:15,914 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 13:03:15,914 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:03:15,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 13:03:15,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-18 13:03:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 13:03:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-18 13:03:15,922 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-11-18 13:03:15,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:15,922 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-18 13:03:15,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:03:15,923 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-18 13:03:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 13:03:15,923 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:15,923 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:03:15,924 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:15,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:15,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1016352962, now seen corresponding path program 1 times [2018-11-18 13:03:15,924 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:03:15,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:03:15,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:15,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:15,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:03:15,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:15,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 13:03:15,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:03:15,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:03:15,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:03:15,992 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-11-18 13:03:16,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:16,044 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-11-18 13:03:16,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:03:16,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-18 13:03:16,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:16,046 INFO L225 Difference]: With dead ends: 63 [2018-11-18 13:03:16,046 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 13:03:16,046 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:03:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 13:03:16,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-18 13:03:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 13:03:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-18 13:03:16,051 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-11-18 13:03:16,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:16,052 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-18 13:03:16,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:03:16,052 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-18 13:03:16,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 13:03:16,052 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:16,052 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:03:16,053 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:16,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:16,053 INFO L82 PathProgramCache]: Analyzing trace with hash -780598397, now seen corresponding path program 1 times [2018-11-18 13:03:16,053 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:03:16,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:03:16,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:16,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:16,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:03:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:03:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:03:16,111 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 13:03:16,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:03:16 BoogieIcfgContainer [2018-11-18 13:03:16,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:03:16,133 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:03:16,133 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:03:16,133 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:03:16,134 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:03:15" (3/4) ... [2018-11-18 13:03:16,136 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 13:03:16,136 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:03:16,137 INFO L168 Benchmark]: Toolchain (without parser) took 1431.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 953.1 MB in the beginning and 1.1 GB in the end (delta: -131.7 MB). Peak memory consumption was 35.0 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:16,138 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:03:16,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.16 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 939.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:16,139 INFO L168 Benchmark]: Boogie Preprocessor took 32.80 ms. Allocated memory is still 1.0 GB. Free memory is still 939.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:03:16,139 INFO L168 Benchmark]: RCFGBuilder took 516.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -202.1 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:16,140 INFO L168 Benchmark]: TraceAbstraction took 695.00 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: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:16,140 INFO L168 Benchmark]: Witness Printer took 3.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:03:16,142 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 181.16 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 939.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.80 ms. Allocated memory is still 1.0 GB. Free memory is still 939.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 516.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -202.1 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 695.00 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: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 11.5 GB. * Witness Printer took 3.32 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; [L25] FCALL gf_u.value = (x) [L26] EXPR, FCALL gf_u.word [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, 44 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 13:03:17,851 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:03:17,852 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:03:17,860 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:03:17,860 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:03:17,861 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:03:17,862 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:03:17,863 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:03:17,864 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:03:17,865 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:03:17,865 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:03:17,866 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:03:17,866 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:03:17,867 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:03:17,868 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:03:17,868 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:03:17,869 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:03:17,870 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:03:17,871 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:03:17,873 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:03:17,873 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:03:17,874 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:03:17,878 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:03:17,878 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:03:17,878 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:03:17,879 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:03:17,879 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:03:17,880 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:03:17,880 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:03:17,881 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:03:17,881 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:03:17,882 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:03:17,882 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:03:17,882 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:03:17,883 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:03:17,883 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:03:17,883 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 13:03:17,891 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:03:17,892 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:03:17,892 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:03:17,892 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 13:03:17,893 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:03:17,893 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:03:17,893 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:03:17,893 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:03:17,893 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:03:17,894 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:03:17,894 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:03:17,894 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:03:17,894 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:03:17,894 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:03:17,894 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 13:03:17,894 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 13:03:17,894 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:03:17,894 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:03:17,895 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:03:17,895 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:03:17,895 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:03:17,895 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:03:17,895 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:03:17,895 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:03:17,895 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:03:17,895 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:03:17,896 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:03:17,896 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:03:17,896 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 13:03:17,896 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:03:17,896 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 13:03:17,896 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 13:03:17,896 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_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/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 [2018-11-18 13:03:17,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:03:17,936 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:03:17,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:03:17,940 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:03:17,940 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:03:17,941 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-18 13:03:17,981 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/data/9a94d377a/467373232f7642a18c866e95422b827b/FLAG17508b80d [2018-11-18 13:03:18,324 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:03:18,324 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-18 13:03:18,329 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/data/9a94d377a/467373232f7642a18c866e95422b827b/FLAG17508b80d [2018-11-18 13:03:18,748 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/data/9a94d377a/467373232f7642a18c866e95422b827b [2018-11-18 13:03:18,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:03:18,752 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 13:03:18,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:03:18,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:03:18,756 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:03:18,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:03:18" (1/1) ... [2018-11-18 13:03:18,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f092cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:18, skipping insertion in model container [2018-11-18 13:03:18,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:03:18" (1/1) ... [2018-11-18 13:03:18,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:03:18,784 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:03:18,934 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:03:18,939 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:03:18,959 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:03:18,981 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:03:18,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:18 WrapperNode [2018-11-18 13:03:18,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:03:18,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:03:18,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:03:18,982 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:03:18,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:18" (1/1) ... [2018-11-18 13:03:18,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:18" (1/1) ... [2018-11-18 13:03:19,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:18" (1/1) ... [2018-11-18 13:03:19,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:18" (1/1) ... [2018-11-18 13:03:19,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:18" (1/1) ... [2018-11-18 13:03:19,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:18" (1/1) ... [2018-11-18 13:03:19,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:18" (1/1) ... [2018-11-18 13:03:19,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:03:19,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:03:19,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:03:19,020 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:03:19,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:03:19,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:03:19,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:03:19,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-18 13:03:19,131 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-18 13:03:19,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-18 13:03:19,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:03:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 13:03:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-18 13:03:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-18 13:03:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:03:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 13:03:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 13:03:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:03:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-18 13:03:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-18 13:03:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:03:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:03:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:03:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 13:03:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 13:03:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-11-18 13:03:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-18 13:03:19,282 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 13:03:19,343 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 13:03:19,346 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:03:19,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:03:19 BoogieIcfgContainer [2018-11-18 13:03:19,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:03:19,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:03:19,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:03:19,350 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:03:19,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:03:18" (1/3) ... [2018-11-18 13:03:19,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a92f474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:03:19, skipping insertion in model container [2018-11-18 13:03:19,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:03:18" (2/3) ... [2018-11-18 13:03:19,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a92f474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:03:19, skipping insertion in model container [2018-11-18 13:03:19,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:03:19" (3/3) ... [2018-11-18 13:03:19,352 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-11-18 13:03:19,359 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:03:19,364 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:03:19,372 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:03:19,390 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:03:19,391 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:03:19,391 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:03:19,391 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:03:19,391 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:03:19,391 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:03:19,391 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:03:19,391 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:03:19,391 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:03:19,401 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-18 13:03:19,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 13:03:19,405 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:19,406 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] [2018-11-18 13:03:19,408 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:19,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:19,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1758649686, now seen corresponding path program 1 times [2018-11-18 13:03:19,414 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:19,414 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 13:03:19,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:19,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:03:19,471 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:03:19,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:19,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:03:19,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:03:19,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:03:19,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:03:19,493 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-18 13:03:19,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:19,510 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-11-18 13:03:19,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:03:19,511 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 13:03:19,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:19,516 INFO L225 Difference]: With dead ends: 75 [2018-11-18 13:03:19,516 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 13:03:19,519 INFO L604 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 [2018-11-18 13:03:19,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 13:03:19,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-18 13:03:19,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 13:03:19,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-18 13:03:19,554 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-18 13:03:19,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:19,554 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-18 13:03:19,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:03:19,555 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-18 13:03:19,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 13:03:19,556 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:19,556 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] [2018-11-18 13:03:19,557 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:19,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:19,557 INFO L82 PathProgramCache]: Analyzing trace with hash -922309145, now seen corresponding path program 1 times [2018-11-18 13:03:19,557 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:19,557 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 13:03:19,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:19,603 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:03:19,640 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:03:19,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:19,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 13:03:19,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:03:19,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:03:19,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:03:19,649 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-18 13:03:19,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:19,675 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-18 13:03:19,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:03:19,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-18 13:03:19,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:19,678 INFO L225 Difference]: With dead ends: 56 [2018-11-18 13:03:19,678 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 13:03:19,679 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:03:19,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 13:03:19,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 13:03:19,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 13:03:19,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-11-18 13:03:19,686 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-11-18 13:03:19,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:19,686 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-18 13:03:19,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:03:19,687 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-11-18 13:03:19,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 13:03:19,687 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:19,688 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] [2018-11-18 13:03:19,688 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:19,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:19,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1173739597, now seen corresponding path program 1 times [2018-11-18 13:03:19,688 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:19,688 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 13:03:19,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:19,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:03:19,888 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:03:19,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:19,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 13:03:19,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 13:03:19,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 13:03:19,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:03:19,900 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-11-18 13:03:20,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:20,382 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-11-18 13:03:20,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:03:20,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-18 13:03:20,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:20,384 INFO L225 Difference]: With dead ends: 60 [2018-11-18 13:03:20,384 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 13:03:20,385 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 13:03:20,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 13:03:20,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 13:03:20,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 13:03:20,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-18 13:03:20,390 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-11-18 13:03:20,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:20,390 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-18 13:03:20,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 13:03:20,391 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-18 13:03:20,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 13:03:20,391 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:20,392 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:03:20,392 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:20,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:20,392 INFO L82 PathProgramCache]: Analyzing trace with hash 933049883, now seen corresponding path program 1 times [2018-11-18 13:03:20,392 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:20,393 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-18 13:03:20,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:20,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 13:03:20,476 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:03:20,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:20,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 13:03:20,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:03:20,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:03:20,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:03:20,485 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-11-18 13:03:20,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:20,512 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-11-18 13:03:20,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:03:20,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-18 13:03:20,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:20,514 INFO L225 Difference]: With dead ends: 56 [2018-11-18 13:03:20,514 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 13:03:20,514 INFO L604 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 [2018-11-18 13:03:20,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 13:03:20,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 13:03:20,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 13:03:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-11-18 13:03:20,518 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-11-18 13:03:20,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:20,519 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-11-18 13:03:20,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:03:20,519 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-11-18 13:03:20,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 13:03:20,520 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:20,520 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:03:20,521 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:20,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:20,522 INFO L82 PathProgramCache]: Analyzing trace with hash -963155547, now seen corresponding path program 1 times [2018-11-18 13:03:20,522 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:20,522 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-18 13:03:20,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:20,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 13:03:20,749 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:03:20,756 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:20,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 13:03:20,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 13:03:20,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 13:03:20,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:03:20,757 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-11-18 13:03:20,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:20,990 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-11-18 13:03:20,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:03:20,991 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-18 13:03:20,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:20,991 INFO L225 Difference]: With dead ends: 58 [2018-11-18 13:03:20,991 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 13:03:20,992 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 13:03:20,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 13:03:20,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-18 13:03:20,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 13:03:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-11-18 13:03:20,995 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-11-18 13:03:20,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:20,995 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-11-18 13:03:20,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 13:03:20,995 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-11-18 13:03:20,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 13:03:20,996 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:20,996 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:03:20,996 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:20,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:20,996 INFO L82 PathProgramCache]: Analyzing trace with hash 46623870, now seen corresponding path program 1 times [2018-11-18 13:03:20,996 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:20,996 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-18 13:03:21,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:21,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 13:03:21,089 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:03:21,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:21,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 13:03:21,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 13:03:21,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 13:03:21,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:03:21,101 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 8 states. [2018-11-18 13:03:21,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:21,245 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-11-18 13:03:21,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:03:21,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-18 13:03:21,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:21,247 INFO L225 Difference]: With dead ends: 43 [2018-11-18 13:03:21,247 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 13:03:21,247 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:03:21,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 13:03:21,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 13:03:21,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 13:03:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-11-18 13:03:21,252 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 32 [2018-11-18 13:03:21,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:21,252 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-11-18 13:03:21,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 13:03:21,253 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-11-18 13:03:21,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 13:03:21,253 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:21,253 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:03:21,254 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:21,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:21,254 INFO L82 PathProgramCache]: Analyzing trace with hash 855970496, now seen corresponding path program 1 times [2018-11-18 13:03:21,254 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:21,254 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-18 13:03:21,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:03:21,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 13:03:21,337 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:03:21,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:03:21,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 13:03:21,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 13:03:21,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 13:03:21,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 13:03:21,344 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 5 states. [2018-11-18 13:03:21,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:21,393 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2018-11-18 13:03:21,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:03:21,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-18 13:03:21,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:21,394 INFO L225 Difference]: With dead ends: 51 [2018-11-18 13:03:21,394 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 13:03:21,395 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:03:21,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 13:03:21,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-18 13:03:21,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 13:03:21,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-11-18 13:03:21,397 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-11-18 13:03:21,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:21,398 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-11-18 13:03:21,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 13:03:21,398 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-18 13:03:21,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-18 13:03:21,398 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:21,399 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:03:21,399 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:21,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:21,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1560776, now seen corresponding path program 1 times [2018-11-18 13:03:21,399 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:03:21,399 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-18 13:03:21,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:03:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:03:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:03:21,514 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 13:03:21,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:03:21 BoogieIcfgContainer [2018-11-18 13:03:21,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:03:21,548 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:03:21,548 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:03:21,549 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:03:21,549 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:03:19" (3/4) ... [2018-11-18 13:03:21,551 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 13:03:21,607 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c5cb9a78-2161-42a7-820a-1e5c5dbddc73/bin-2019/uautomizer/witness.graphml [2018-11-18 13:03:21,607 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:03:21,608 INFO L168 Benchmark]: Toolchain (without parser) took 2856.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.3 MB). Free memory was 947.9 MB in the beginning and 951.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 185.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:21,609 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:03:21,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.98 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 931.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:21,610 INFO L168 Benchmark]: Boogie Preprocessor took 37.22 ms. Allocated memory is still 1.0 GB. Free memory is still 931.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:03:21,610 INFO L168 Benchmark]: RCFGBuilder took 327.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.3 MB). Free memory was 931.8 MB in the beginning and 1.2 GB in the end (delta: -229.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:21,611 INFO L168 Benchmark]: TraceAbstraction took 2201.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 951.5 MB in the end (delta: 209.7 MB). Peak memory consumption was 209.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:21,611 INFO L168 Benchmark]: Witness Printer took 58.98 ms. Allocated memory is still 1.2 GB. Free memory is still 951.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:03:21,615 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 228.98 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 931.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.22 ms. Allocated memory is still 1.0 GB. Free memory is still 931.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 327.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.3 MB). Free memory was 931.8 MB in the beginning and 1.2 GB in the end (delta: -229.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2201.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 951.5 MB in the end (delta: 209.7 MB). Peak memory consumption was 209.7 MB. Max. memory is 11.5 GB. * Witness Printer took 58.98 ms. Allocated memory is still 1.2 GB. Free memory is still 951.5 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; [L25] FCALL gf_u.value = (x) [L26] EXPR, FCALL gf_u.word [L26] (w) = gf_u.word [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; [L25] FCALL gf_u.value = (x) [L26] EXPR, FCALL gf_u.word [L26] (w) = gf_u.word [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; [L59] FCALL gf_u.value = (x) [L60] EXPR, FCALL gf_u.word [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, 42 locations, 1 error locations. UNSAFE Result, 2.1s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 274 SDtfs, 114 SDslu, 744 SDs, 0 SdLazy, 278 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 184 ConstructedInterpolants, 12 QuantifiedInterpolants, 13625 SizeOfPredicates, 15 NumberOfNonLiveVariables, 519 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 24/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...