./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/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 5d57b69a18e01217b153b00cc1c03d5a7a42828b .............................................................................................................................................................................................................................................................................. 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_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/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 5d57b69a18e01217b153b00cc1c03d5a7a42828b .......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 09:16:13,124 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:16:13,125 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:16:13,132 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:16:13,132 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:16:13,133 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:16:13,134 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:16:13,135 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:16:13,136 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:16:13,137 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:16:13,137 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:16:13,137 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:16:13,138 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:16:13,139 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:16:13,139 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:16:13,140 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:16:13,141 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:16:13,142 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:16:13,144 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:16:13,145 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:16:13,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:16:13,146 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:16:13,148 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:16:13,148 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:16:13,148 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:16:13,149 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:16:13,150 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:16:13,150 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:16:13,151 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:16:13,151 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:16:13,151 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:16:13,152 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:16:13,152 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:16:13,152 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:16:13,153 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:16:13,153 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:16:13,154 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 09:16:13,161 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:16:13,162 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:16:13,162 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:16:13,162 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 09:16:13,163 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:16:13,163 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:16:13,163 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:16:13,163 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:16:13,163 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:16:13,164 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:16:13,164 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:16:13,164 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:16:13,164 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:16:13,164 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:16:13,164 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:16:13,164 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:16:13,164 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:16:13,165 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:16:13,165 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:16:13,165 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:16:13,165 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:16:13,165 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:16:13,165 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:16:13,165 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:16:13,166 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:16:13,166 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:16:13,166 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:16:13,166 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 09:16:13,166 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:16:13,166 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 09:16:13,166 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_2a38265f-85d9-4a59-999c-1480325775d3/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 -> 5d57b69a18e01217b153b00cc1c03d5a7a42828b [2018-11-18 09:16:13,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:16:13,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:16:13,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:16:13,198 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:16:13,199 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:16:13,199 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-11-18 09:16:13,241 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/data/3fd43695e/00fbdb26903c4862aa26a0835ea4ce1b/FLAGa23d73098 [2018-11-18 09:16:13,530 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:16:13,530 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-11-18 09:16:13,534 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/data/3fd43695e/00fbdb26903c4862aa26a0835ea4ce1b/FLAGa23d73098 [2018-11-18 09:16:13,542 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/data/3fd43695e/00fbdb26903c4862aa26a0835ea4ce1b [2018-11-18 09:16:13,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:16:13,545 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 09:16:13,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:16:13,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:16:13,548 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:16:13,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:16:13" (1/1) ... [2018-11-18 09:16:13,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4546e68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:13, skipping insertion in model container [2018-11-18 09:16:13,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:16:13" (1/1) ... [2018-11-18 09:16:13,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:16:13,567 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:16:13,662 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:16:13,664 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:16:13,673 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:16:13,683 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:16:13,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:13 WrapperNode [2018-11-18 09:16:13,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:16:13,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:16:13,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:16:13,684 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:16:13,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:13" (1/1) ... [2018-11-18 09:16:13,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:13" (1/1) ... [2018-11-18 09:16:13,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:13" (1/1) ... [2018-11-18 09:16:13,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:13" (1/1) ... [2018-11-18 09:16:13,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:13" (1/1) ... [2018-11-18 09:16:13,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:13" (1/1) ... [2018-11-18 09:16:13,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:13" (1/1) ... [2018-11-18 09:16:13,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:16:13,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:16:13,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:16:13,708 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:16:13,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/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 09:16:13,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:16:13,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:16:13,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 09:16:13,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:16:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 09:16:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 09:16:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:16:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:16:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:16:13,884 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:16:13,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:16:13 BoogieIcfgContainer [2018-11-18 09:16:13,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:16:13,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:16:13,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:16:13,887 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:16:13,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:16:13" (1/3) ... [2018-11-18 09:16:13,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c7d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:16:13, skipping insertion in model container [2018-11-18 09:16:13,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:13" (2/3) ... [2018-11-18 09:16:13,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c7d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:16:13, skipping insertion in model container [2018-11-18 09:16:13,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:16:13" (3/3) ... [2018-11-18 09:16:13,891 INFO L112 eAbstractionObserver]: Analyzing ICFG loop_true-unreach-call.c [2018-11-18 09:16:13,898 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:16:13,904 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 09:16:13,915 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 09:16:13,941 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:16:13,941 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:16:13,942 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:16:13,942 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:16:13,942 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:16:13,942 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:16:13,942 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:16:13,942 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:16:13,942 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:16:13,957 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-18 09:16:13,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 09:16:13,961 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:16:13,962 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:16:13,964 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:16:13,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:16:13,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-11-18 09:16:13,970 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:16:13,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:16:14,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:16:14,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:16:14,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:16:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:16:14,045 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 09:16:14,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:16:14,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:16:14,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 09:16:14,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 09:16:14,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:16:14,058 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-18 09:16:14,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:16:14,071 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-18 09:16:14,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:16:14,072 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 09:16:14,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:16:14,078 INFO L225 Difference]: With dead ends: 31 [2018-11-18 09:16:14,079 INFO L226 Difference]: Without dead ends: 12 [2018-11-18 09:16:14,081 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 09:16:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-18 09:16:14,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-18 09:16:14,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 09:16:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-18 09:16:14,105 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-18 09:16:14,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:16:14,105 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-18 09:16:14,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 09:16:14,106 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-18 09:16:14,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 09:16:14,106 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:16:14,106 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:16:14,107 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:16:14,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:16:14,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-11-18 09:16:14,107 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:16:14,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:16:14,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:16:14,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:16:14,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:16:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:16:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:16:14,132 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 09:16:14,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:16:14 BoogieIcfgContainer [2018-11-18 09:16:14,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 09:16:14,144 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:16:14,144 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:16:14,145 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:16:14,145 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:16:13" (3/4) ... [2018-11-18 09:16:14,147 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 09:16:14,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:16:14,148 INFO L168 Benchmark]: Toolchain (without parser) took 603.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -156.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. [2018-11-18 09:16:14,149 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:16:14,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.40 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:16:14,150 INFO L168 Benchmark]: Boogie Preprocessor took 24.52 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:16:14,150 INFO L168 Benchmark]: RCFGBuilder took 175.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -196.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-18 09:16:14,151 INFO L168 Benchmark]: TraceAbstraction took 259.43 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2018-11-18 09:16:14,151 INFO L168 Benchmark]: Witness Printer took 2.95 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 09:16:14,153 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 137.40 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.52 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 175.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -196.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 259.43 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.95 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: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12. Possible FailurePath: [L6] float x, y, z; [L8] x = 1.f [L9] y = 1e7 [L10] z = 42.f VAL [x=1, y=10000000, z=42] [L12] COND FALSE !(x < y) VAL [x=1, y=10000000, z=42] [L18] CALL __VERIFIER_assert(z >= 0.f && z <= 1e8) VAL [\old(cond)=0] [L2] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L2] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 09:16:15,525 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:16:15,526 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:16:15,534 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:16:15,534 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:16:15,535 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:16:15,536 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:16:15,537 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:16:15,538 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:16:15,538 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:16:15,539 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:16:15,539 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:16:15,540 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:16:15,541 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:16:15,542 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:16:15,542 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:16:15,543 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:16:15,544 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:16:15,545 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:16:15,546 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:16:15,547 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:16:15,548 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:16:15,550 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:16:15,550 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:16:15,550 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:16:15,551 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:16:15,551 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:16:15,552 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:16:15,552 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:16:15,553 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:16:15,554 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:16:15,554 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:16:15,554 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:16:15,554 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:16:15,555 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:16:15,555 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:16:15,556 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 09:16:15,567 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:16:15,567 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:16:15,568 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:16:15,568 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 09:16:15,568 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:16:15,568 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:16:15,568 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:16:15,569 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:16:15,569 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:16:15,569 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:16:15,569 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:16:15,569 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:16:15,569 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:16:15,569 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:16:15,569 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 09:16:15,569 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 09:16:15,569 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:16:15,569 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:16:15,570 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:16:15,570 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:16:15,570 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:16:15,570 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:16:15,570 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:16:15,570 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:16:15,570 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:16:15,570 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:16:15,570 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:16:15,571 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:16:15,571 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 09:16:15,571 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:16:15,571 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 09:16:15,571 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 09:16:15,571 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_2a38265f-85d9-4a59-999c-1480325775d3/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 -> 5d57b69a18e01217b153b00cc1c03d5a7a42828b [2018-11-18 09:16:15,604 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:16:15,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:16:15,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:16:15,617 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:16:15,617 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:16:15,617 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-11-18 09:16:15,661 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/data/65eb71d8c/a3132c14f7b74ac18e859cc4f08b9036/FLAG57d1f821c [2018-11-18 09:16:15,974 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:16:15,974 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-11-18 09:16:15,977 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/data/65eb71d8c/a3132c14f7b74ac18e859cc4f08b9036/FLAG57d1f821c [2018-11-18 09:16:15,985 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/data/65eb71d8c/a3132c14f7b74ac18e859cc4f08b9036 [2018-11-18 09:16:15,987 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:16:15,988 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 09:16:15,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:16:15,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:16:15,991 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:16:15,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:16:15" (1/1) ... [2018-11-18 09:16:15,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@df5c0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:15, skipping insertion in model container [2018-11-18 09:16:15,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:16:15" (1/1) ... [2018-11-18 09:16:15,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:16:16,013 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:16:16,133 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:16:16,137 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:16:16,147 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:16:16,159 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:16:16,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:16 WrapperNode [2018-11-18 09:16:16,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:16:16,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:16:16,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:16:16,160 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:16:16,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:16" (1/1) ... [2018-11-18 09:16:16,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:16" (1/1) ... [2018-11-18 09:16:16,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:16" (1/1) ... [2018-11-18 09:16:16,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:16" (1/1) ... [2018-11-18 09:16:16,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:16" (1/1) ... [2018-11-18 09:16:16,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:16" (1/1) ... [2018-11-18 09:16:16,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:16" (1/1) ... [2018-11-18 09:16:16,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:16:16,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:16:16,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:16:16,184 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:16:16,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/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 09:16:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:16:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:16:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 09:16:16,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:16:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 09:16:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 09:16:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:16:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:16:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:16:16,833 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:16:16,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:16:16 BoogieIcfgContainer [2018-11-18 09:16:16,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:16:16,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:16:16,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:16:16,836 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:16:16,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:16:15" (1/3) ... [2018-11-18 09:16:16,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9a157d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:16:16, skipping insertion in model container [2018-11-18 09:16:16,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:16" (2/3) ... [2018-11-18 09:16:16,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9a157d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:16:16, skipping insertion in model container [2018-11-18 09:16:16,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:16:16" (3/3) ... [2018-11-18 09:16:16,838 INFO L112 eAbstractionObserver]: Analyzing ICFG loop_true-unreach-call.c [2018-11-18 09:16:16,844 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:16:16,848 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 09:16:16,857 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 09:16:16,874 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:16:16,874 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:16:16,874 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:16:16,875 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:16:16,875 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:16:16,875 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:16:16,875 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:16:16,875 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:16:16,875 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:16:16,889 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-18 09:16:16,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 09:16:16,893 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:16:16,894 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:16:16,895 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:16:16,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:16:16,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-11-18 09:16:16,900 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:16:16,900 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/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 09:16:16,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:16:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:16:16,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:16:16,942 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 09:16:16,942 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:16:16,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:16:16,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:16:16,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 09:16:16,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 09:16:16,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 09:16:16,962 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-18 09:16:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:16:16,975 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-18 09:16:16,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:16:16,976 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 09:16:16,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:16:16,981 INFO L225 Difference]: With dead ends: 31 [2018-11-18 09:16:16,981 INFO L226 Difference]: Without dead ends: 12 [2018-11-18 09:16:16,983 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 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 09:16:16,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-18 09:16:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-18 09:16:17,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 09:16:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-18 09:16:17,004 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-18 09:16:17,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:16:17,004 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-18 09:16:17,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 09:16:17,005 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-18 09:16:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 09:16:17,005 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:16:17,005 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:16:17,005 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:16:17,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:16:17,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-11-18 09:16:17,006 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:16:17,006 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/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 09:16:17,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:16:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:16:17,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:16:17,071 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 09:16:17,071 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:16:17,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:16:17,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:16:17,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:16:17,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:16:17,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:16:17,079 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-11-18 09:16:17,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:16:17,280 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-18 09:16:17,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:16:17,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 09:16:17,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:16:17,281 INFO L225 Difference]: With dead ends: 19 [2018-11-18 09:16:17,282 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 09:16:17,282 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:16:17,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 09:16:17,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 09:16:17,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 09:16:17,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-18 09:16:17,285 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-11-18 09:16:17,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:16:17,285 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-18 09:16:17,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:16:17,285 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-18 09:16:17,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 09:16:17,285 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:16:17,285 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:16:17,286 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:16:17,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:16:17,286 INFO L82 PathProgramCache]: Analyzing trace with hash -661808769, now seen corresponding path program 1 times [2018-11-18 09:16:17,286 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:16:17,286 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/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 09:16:17,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:16:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:16:17,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:16:17,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:16:17,390 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:16:20,586 WARN L180 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-18 09:16:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:16:20,606 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:16:20,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-18 09:16:20,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:16:20,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:16:20,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2018-11-18 09:16:20,607 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2018-11-18 09:16:27,660 WARN L180 SmtUtils]: Spent 2.83 s on a formula simplification that was a NOOP. DAG size: 10 [2018-11-18 09:16:32,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:16:32,629 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2018-11-18 09:16:32,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:16:32,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-18 09:16:32,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:16:32,643 INFO L225 Difference]: With dead ends: 25 [2018-11-18 09:16:32,644 INFO L226 Difference]: Without dead ends: 20 [2018-11-18 09:16:32,644 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=19, Invalid=21, Unknown=2, NotChecked=0, Total=42 [2018-11-18 09:16:32,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-18 09:16:32,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-18 09:16:32,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-18 09:16:32,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-18 09:16:32,648 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2018-11-18 09:16:32,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:16:32,648 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-18 09:16:32,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:16:32,648 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-18 09:16:32,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 09:16:32,649 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:16:32,649 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:16:32,649 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:16:32,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:16:32,649 INFO L82 PathProgramCache]: Analyzing trace with hash -875350895, now seen corresponding path program 2 times [2018-11-18 09:16:32,650 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:16:32,650 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/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 09:16:32,653 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 09:16:32,874 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 09:16:32,875 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:16:32,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:16:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:16:33,035 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:16:34,089 WARN L180 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-18 09:16:40,156 WARN L180 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 12 [2018-11-18 09:16:56,064 WARN L180 SmtUtils]: Spent 2.72 s on a formula simplification that was a NOOP. DAG size: 13 [2018-11-18 09:17:26,306 WARN L180 SmtUtils]: Spent 6.53 s on a formula simplification that was a NOOP. DAG size: 14 [2018-11-18 09:17:29,210 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven c_main_~z~0 .cse1) .cse1) .cse1) .cse1)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)))) is different from true [2018-11-18 09:17:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 6 times theorem prover too weak. 0 trivial. 8 not checked. [2018-11-18 09:17:29,231 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:17:29,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-11-18 09:17:29,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 09:17:29,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 09:17:29,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=4, NotChecked=26, Total=240 [2018-11-18 09:17:29,232 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 16 states. [2018-11-18 09:17:51,086 WARN L180 SmtUtils]: Spent 12.26 s on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-11-18 09:17:59,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:17:59,689 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-11-18 09:17:59,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 09:17:59,700 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2018-11-18 09:17:59,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:17:59,701 INFO L225 Difference]: With dead ends: 23 [2018-11-18 09:17:59,701 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 09:17:59,702 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 77.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=4, NotChecked=30, Total=306 [2018-11-18 09:17:59,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 09:17:59,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 09:17:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 09:17:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 09:17:59,703 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-11-18 09:17:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:17:59,703 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:17:59,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 09:17:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 09:17:59,703 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 09:17:59,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 09:18:12,939 WARN L180 SmtUtils]: Spent 13.18 s on a formula simplification. DAG size of input: 22 DAG size of output: 14 [2018-11-18 09:18:23,532 WARN L180 SmtUtils]: Spent 10.59 s on a formula simplification. DAG size of input: 45 DAG size of output: 9 [2018-11-18 09:18:23,533 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 09:18:23,533 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 09:18:23,534 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 09:18:23,534 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 09:18:23,534 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 09:18:23,534 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 09:18:23,534 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 4 20) the Hoare annotation is: true [2018-11-18 09:18:23,534 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 4 20) no Hoare annotation was computed. [2018-11-18 09:18:23,534 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-18 09:18:23,534 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 4 20) no Hoare annotation was computed. [2018-11-18 09:18:23,534 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 12 16) no Hoare annotation was computed. [2018-11-18 09:18:23,535 INFO L421 ceAbstractionStarter]: At program point L12-3(lines 12 16) the Hoare annotation is: (and (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven main_~z~0) ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0)) (fp.geq main_~z~0 (_ +zero 8 24))) [2018-11-18 09:18:23,535 INFO L421 ceAbstractionStarter]: At program point L12-4(lines 12 16) the Hoare annotation is: (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 100000000.0))) (and (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven main_~z~0) .cse0) (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven (fp.add roundNearestTiesToEven main_~z~0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) .cse0) (fp.geq main_~z~0 (_ +zero 8 24)))) [2018-11-18 09:18:23,535 INFO L425 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2018-11-18 09:18:23,535 INFO L425 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2018-11-18 09:18:23,535 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2018-11-18 09:18:23,535 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2018-11-18 09:18:23,535 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2018-11-18 09:18:23,536 INFO L425 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2018-11-18 09:18:23,540 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 09:18:23,541 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 09:18:23,543 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 09:18:23,544 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 09:18:23,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:18:23 BoogieIcfgContainer [2018-11-18 09:18:23,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 09:18:23,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:18:23,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:18:23,546 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:18:23,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:16:16" (3/4) ... [2018-11-18 09:18:23,549 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 09:18:23,554 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 09:18:23,554 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 09:18:23,554 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 09:18:23,556 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-18 09:18:23,557 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 09:18:23,557 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 09:18:23,583 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2a38265f-85d9-4a59-999c-1480325775d3/bin-2019/uautomizer/witness.graphml [2018-11-18 09:18:23,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:18:23,584 INFO L168 Benchmark]: Toolchain (without parser) took 127596.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 949.7 MB in the beginning and 956.5 MB in the end (delta: -6.7 MB). Peak memory consumption was 102.8 MB. Max. memory is 11.5 GB. [2018-11-18 09:18:23,585 INFO L168 Benchmark]: CDTParser took 0.16 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 09:18:23,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.29 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:18:23,585 INFO L168 Benchmark]: Boogie Preprocessor took 23.70 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:18:23,586 INFO L168 Benchmark]: RCFGBuilder took 649.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -158.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:18:23,586 INFO L168 Benchmark]: TraceAbstraction took 126711.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 963.4 MB in the end (delta: 128.6 MB). Peak memory consumption was 128.6 MB. Max. memory is 11.5 GB. [2018-11-18 09:18:23,587 INFO L168 Benchmark]: Witness Printer took 37.85 ms. Allocated memory is still 1.1 GB. Free memory was 963.4 MB in the beginning and 956.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-11-18 09:18:23,589 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.29 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.70 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 649.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -158.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 126711.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 963.4 MB in the end (delta: 128.6 MB). Peak memory consumption was 128.6 MB. Max. memory is 11.5 GB. * Witness Printer took 37.85 ms. Allocated memory is still 1.1 GB. Free memory was 963.4 MB in the beginning and 956.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant [2018-11-18 09:18:23,593 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 09:18:23,593 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 09:18:23,594 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 09:18:23,594 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ~fp.leq~DOUBLE(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, z), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E8)) && ~fp.geq~FLOAT(z, ~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 126.6s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 42.7s AutomataDifference, 0.0s DeadEndRemovalTime, 23.8s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 4 SDslu, 119 SDs, 0 SdLazy, 64 SolverSat, 10 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 15.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 86.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 18 NumberOfFragments, 39 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 171 FormulaSimplificationTreeSizeReductionInter, 23.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 59.6s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 11293 SizeOfPredicates, 6 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 6/44 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...