./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1071.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1071.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47ecd0c3a9cbb067bdc3246482dd87f3fbac8a0c ......................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1071.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47ecd0c3a9cbb067bdc3246482dd87f3fbac8a0c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:32:45,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:32:45,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:32:45,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:32:45,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:32:45,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:32:45,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:32:45,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:32:45,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:32:45,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:32:45,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:32:45,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:32:45,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:32:45,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:32:45,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:32:45,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:32:45,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:32:45,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:32:45,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:32:45,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:32:45,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:32:45,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:32:45,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:32:45,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:32:45,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:32:45,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:32:45,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:32:45,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:32:45,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:32:45,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:32:45,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:32:45,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:32:45,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:32:45,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:32:45,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:32:45,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:32:45,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:32:45,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:32:45,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:32:45,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:32:45,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:32:45,139 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:32:45,187 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:32:45,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:32:45,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:32:45,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:32:45,189 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:32:45,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:32:45,189 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:32:45,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:32:45,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:32:45,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:32:45,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:32:45,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:32:45,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:32:45,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:32:45,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:32:45,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:32:45,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:32:45,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:32:45,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:32:45,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:32:45,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:32:45,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:45,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:32:45,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:32:45,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:32:45,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:32:45,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:32:45,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:32:45,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:32:45,194 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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(reach_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 -> 47ecd0c3a9cbb067bdc3246482dd87f3fbac8a0c [2020-10-20 00:32:45,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:32:45,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:32:45,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:32:45,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:32:45,433 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:32:45,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1071.c [2020-10-20 00:32:45,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29354157c/38c561ef1ce04f0fbab10ebeac9822d3/FLAGfb3235d0c [2020-10-20 00:32:45,971 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:32:45,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1071.c [2020-10-20 00:32:45,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29354157c/38c561ef1ce04f0fbab10ebeac9822d3/FLAGfb3235d0c [2020-10-20 00:32:46,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29354157c/38c561ef1ce04f0fbab10ebeac9822d3 [2020-10-20 00:32:46,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:32:46,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:32:46,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:46,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:32:46,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:32:46,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:46,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36422439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46, skipping insertion in model container [2020-10-20 00:32:46,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:46,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:32:46,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:32:46,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:46,627 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:32:46,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:46,675 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:32:46,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46 WrapperNode [2020-10-20 00:32:46,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:46,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:46,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:32:46,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:32:46,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:46,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:46,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:46,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:32:46,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:32:46,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:32:46,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:46,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:46,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:46,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:46,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:46,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:46,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:46,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:32:46,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:32:46,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:32:46,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:32:46,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 00:32:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:32:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:32:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:32:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:32:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:32:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:32:46,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:32:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:32:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:32:47,151 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:32:47,152 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-20 00:32:47,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:47 BoogieIcfgContainer [2020-10-20 00:32:47,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:32:47,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:32:47,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:32:47,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:32:47,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:32:46" (1/3) ... [2020-10-20 00:32:47,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1ab68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:47, skipping insertion in model container [2020-10-20 00:32:47,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (2/3) ... [2020-10-20 00:32:47,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1ab68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:47, skipping insertion in model container [2020-10-20 00:32:47,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:47" (3/3) ... [2020-10-20 00:32:47,165 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2020-10-20 00:32:47,181 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:32:47,202 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:32:47,226 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:32:47,259 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:32:47,259 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:32:47,259 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:32:47,260 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:32:47,260 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:32:47,260 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:32:47,260 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:32:47,260 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:32:47,279 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-20 00:32:47,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:32:47,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:47,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:47,286 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:47,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:47,298 INFO L82 PathProgramCache]: Analyzing trace with hash 166132434, now seen corresponding path program 1 times [2020-10-20 00:32:47,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:32:47,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2516494] [2020-10-20 00:32:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:32:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:47,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2516494] [2020-10-20 00:32:47,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:47,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:32:47,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121511580] [2020-10-20 00:32:47,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:32:47,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:32:47,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:32:47,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:47,479 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-10-20 00:32:47,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:47,499 INFO L93 Difference]: Finished difference Result 47 states and 71 transitions. [2020-10-20 00:32:47,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:32:47,501 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:32:47,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:47,513 INFO L225 Difference]: With dead ends: 47 [2020-10-20 00:32:47,513 INFO L226 Difference]: Without dead ends: 21 [2020-10-20 00:32:47,517 INFO L677 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 [2020-10-20 00:32:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-20 00:32:47,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-20 00:32:47,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 00:32:47,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-10-20 00:32:47,552 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 11 [2020-10-20 00:32:47,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:47,553 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-10-20 00:32:47,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:32:47,553 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-10-20 00:32:47,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:32:47,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:47,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:47,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:32:47,555 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:47,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:47,555 INFO L82 PathProgramCache]: Analyzing trace with hash 786053359, now seen corresponding path program 1 times [2020-10-20 00:32:47,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:32:47,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039036338] [2020-10-20 00:32:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:32:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:47,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:47,693 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:47,761 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:32:47,761 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:32:47,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:32:47,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:32:47 BoogieIcfgContainer [2020-10-20 00:32:47,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:32:47,794 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:32:47,794 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:32:47,795 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:32:47,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:47" (3/4) ... [2020-10-20 00:32:47,799 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:32:47,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:32:47,802 INFO L168 Benchmark]: Toolchain (without parser) took 1465.32 ms. Allocated memory was 36.7 MB in the beginning and 50.3 MB in the end (delta: 13.6 MB). Free memory was 10.4 MB in the beginning and 28.1 MB in the end (delta: -17.7 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:32:47,803 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 36.7 MB. Free memory is still 15.7 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:32:47,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.23 ms. Allocated memory was 36.7 MB in the beginning and 45.1 MB in the end (delta: 8.4 MB). Free memory was 9.5 MB in the beginning and 26.8 MB in the end (delta: -17.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:47,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.15 ms. Allocated memory is still 45.1 MB. Free memory was 26.6 MB in the beginning and 24.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:47,806 INFO L168 Benchmark]: Boogie Preprocessor took 30.81 ms. Allocated memory is still 45.1 MB. Free memory was 24.6 MB in the beginning and 22.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:47,807 INFO L168 Benchmark]: RCFGBuilder took 405.50 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 22.9 MB in the beginning and 16.8 MB in the end (delta: 6.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:47,809 INFO L168 Benchmark]: TraceAbstraction took 637.82 ms. Allocated memory was 47.2 MB in the beginning and 50.3 MB in the end (delta: 3.1 MB). Free memory was 16.3 MB in the beginning and 28.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:47,809 INFO L168 Benchmark]: Witness Printer took 5.83 ms. Allocated memory is still 50.3 MB. Free memory was 28.8 MB in the beginning and 28.1 MB in the end (delta: 745.9 kB). Peak memory consumption was 745.9 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:47,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 36.7 MB. Free memory is still 15.7 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 334.23 ms. Allocated memory was 36.7 MB in the beginning and 45.1 MB in the end (delta: 8.4 MB). Free memory was 9.5 MB in the beginning and 26.8 MB in the end (delta: -17.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 41.15 ms. Allocated memory is still 45.1 MB. Free memory was 26.6 MB in the beginning and 24.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 30.81 ms. Allocated memory is still 45.1 MB. Free memory was 24.6 MB in the beginning and 22.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 405.50 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 22.9 MB in the beginning and 16.8 MB in the end (delta: 6.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 637.82 ms. Allocated memory was 47.2 MB in the beginning and 50.3 MB in the end (delta: 3.1 MB). Free memory was 16.3 MB in the beginning and 28.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. * Witness Printer took 5.83 ms. Allocated memory is still 50.3 MB. Free memory was 28.8 MB in the beginning and 28.1 MB in the end (delta: 745.9 kB). Peak memory consumption was 745.9 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 30. Possible FailurePath: [L70] double x = 0.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L72] double res = trunc_double(x); [L17] return x != x; [L75] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1071.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 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=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: 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 0.1.25-9a8b2e8 [2020-10-20 00:32:49,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:32:49,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:32:49,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:32:49,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:32:49,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:32:49,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:32:49,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:32:49,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:32:49,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:32:49,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:32:49,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:32:49,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:32:49,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:32:49,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:32:49,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:32:49,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:32:49,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:32:49,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:32:49,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:32:49,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:32:50,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:32:50,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:32:50,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:32:50,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:32:50,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:32:50,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:32:50,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:32:50,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:32:50,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:32:50,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:32:50,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:32:50,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:32:50,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:32:50,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:32:50,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:32:50,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:32:50,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:32:50,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:32:50,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:32:50,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:32:50,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:32:50,043 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:32:50,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:32:50,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:32:50,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:32:50,045 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:32:50,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:32:50,045 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:32:50,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:32:50,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:32:50,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:32:50,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:32:50,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:32:50,047 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:32:50,047 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:32:50,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:32:50,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:32:50,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:32:50,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:32:50,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:32:50,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:32:50,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:32:50,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:32:50,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:50,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:32:50,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:32:50,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:32:50,049 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:32:50,049 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:32:50,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:32:50,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:32:50,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:32:50,050 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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(reach_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 -> 47ecd0c3a9cbb067bdc3246482dd87f3fbac8a0c [2020-10-20 00:32:50,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:32:50,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:32:50,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:32:50,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:32:50,327 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:32:50,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1071.c [2020-10-20 00:32:50,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cea8b9c7c/d98a429eeab2415a981a51143e74208a/FLAG309b7f17e [2020-10-20 00:32:50,973 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:32:50,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1071.c [2020-10-20 00:32:50,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cea8b9c7c/d98a429eeab2415a981a51143e74208a/FLAG309b7f17e [2020-10-20 00:32:51,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cea8b9c7c/d98a429eeab2415a981a51143e74208a [2020-10-20 00:32:51,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:32:51,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:32:51,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:51,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:32:51,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:32:51,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:51" (1/1) ... [2020-10-20 00:32:51,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@199e038c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:51, skipping insertion in model container [2020-10-20 00:32:51,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:51" (1/1) ... [2020-10-20 00:32:51,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:32:51,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:32:51,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:51,625 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:32:51,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:51,684 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:32:51,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:51 WrapperNode [2020-10-20 00:32:51,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:51,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:51,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:32:51,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:32:51,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:51" (1/1) ... [2020-10-20 00:32:51,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:51" (1/1) ... [2020-10-20 00:32:51,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:51,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:32:51,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:32:51,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:32:51,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:51" (1/1) ... [2020-10-20 00:32:51,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:51" (1/1) ... [2020-10-20 00:32:51,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:51" (1/1) ... [2020-10-20 00:32:51,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:51" (1/1) ... [2020-10-20 00:32:51,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:51" (1/1) ... [2020-10-20 00:32:51,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:51" (1/1) ... [2020-10-20 00:32:51,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:51" (1/1) ... [2020-10-20 00:32:51,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:32:51,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:32:51,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:32:51,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:32:51,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 00:32:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:32:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:32:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:32:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:32:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:32:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:32:51,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:32:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:32:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:32:52,306 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:32:52,306 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-20 00:32:52,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:52 BoogieIcfgContainer [2020-10-20 00:32:52,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:32:52,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:32:52,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:32:52,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:32:52,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:32:51" (1/3) ... [2020-10-20 00:32:52,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226f434b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:52, skipping insertion in model container [2020-10-20 00:32:52,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:51" (2/3) ... [2020-10-20 00:32:52,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226f434b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:52, skipping insertion in model container [2020-10-20 00:32:52,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:52" (3/3) ... [2020-10-20 00:32:52,317 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2020-10-20 00:32:52,329 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:32:52,337 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:32:52,347 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:32:52,370 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:32:52,370 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:32:52,370 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:32:52,370 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:32:52,371 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:32:52,371 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:32:52,371 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:32:52,371 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:32:52,383 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-20 00:32:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:32:52,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:52,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:52,390 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:52,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:52,395 INFO L82 PathProgramCache]: Analyzing trace with hash 166132434, now seen corresponding path program 1 times [2020-10-20 00:32:52,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:52,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837431368] [2020-10-20 00:32:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 00:32:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:52,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:32:52,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:32:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:52,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:32:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:52,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837431368] [2020-10-20 00:32:52,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:52,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:32:52,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204533398] [2020-10-20 00:32:52,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:32:52,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:32:52,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:32:52,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:52,624 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-10-20 00:32:52,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:52,645 INFO L93 Difference]: Finished difference Result 47 states and 71 transitions. [2020-10-20 00:32:52,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:32:52,647 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:32:52,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:52,658 INFO L225 Difference]: With dead ends: 47 [2020-10-20 00:32:52,659 INFO L226 Difference]: Without dead ends: 21 [2020-10-20 00:32:52,662 INFO L677 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 [2020-10-20 00:32:52,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-20 00:32:52,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-20 00:32:52,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 00:32:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-10-20 00:32:52,696 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 11 [2020-10-20 00:32:52,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:52,696 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-10-20 00:32:52,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:32:52,697 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-10-20 00:32:52,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:32:52,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:52,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:52,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:32:52,905 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:52,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:52,906 INFO L82 PathProgramCache]: Analyzing trace with hash 786053359, now seen corresponding path program 1 times [2020-10-20 00:32:52,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:52,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417580922] [2020-10-20 00:32:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 00:32:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:53,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 00:32:53,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:32:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:53,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:32:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:54,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417580922] [2020-10-20 00:32:54,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:54,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-20 00:32:54,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447304792] [2020-10-20 00:32:54,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 00:32:54,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:32:54,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 00:32:54,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:32:54,054 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 10 states. [2020-10-20 00:32:54,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:54,963 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-10-20 00:32:54,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 00:32:54,964 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-20 00:32:54,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:54,965 INFO L225 Difference]: With dead ends: 27 [2020-10-20 00:32:54,965 INFO L226 Difference]: Without dead ends: 20 [2020-10-20 00:32:54,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-20 00:32:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-20 00:32:54,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-20 00:32:54,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-20 00:32:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-20 00:32:54,971 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 12 [2020-10-20 00:32:54,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:54,972 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-20 00:32:54,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 00:32:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-20 00:32:54,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:32:54,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:54,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:55,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:32:55,184 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:55,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:55,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1398618101, now seen corresponding path program 1 times [2020-10-20 00:32:55,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:55,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428965291] [2020-10-20 00:32:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 00:32:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:55,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 00:32:55,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:32:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:55,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:32:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:55,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428965291] [2020-10-20 00:32:55,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:55,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 9 [2020-10-20 00:32:55,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792587073] [2020-10-20 00:32:55,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 00:32:55,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:32:55,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 00:32:55,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-20 00:32:55,708 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 9 states. [2020-10-20 00:32:56,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:56,017 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-10-20 00:32:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:32:56,026 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-10-20 00:32:56,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:56,027 INFO L225 Difference]: With dead ends: 20 [2020-10-20 00:32:56,027 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:32:56,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-20 00:32:56,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:32:56,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:32:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:32:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:32:56,029 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-10-20 00:32:56,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:56,029 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:32:56,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 00:32:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:32:56,030 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:32:56,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:32:56,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:32:56,386 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 00:32:56,387 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-20 00:32:56,387 INFO L274 CegarLoopResult]: For program point L32(lines 32 60) no Hoare annotation was computed. [2020-10-20 00:32:56,387 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:32:56,387 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:32:56,388 INFO L270 CegarLoopResult]: At program point L61(lines 19 62) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_trunc_double_~x) (= currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_trunc_double_#res|)) [2020-10-20 00:32:56,388 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:32:56,388 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:32:56,388 INFO L274 CegarLoopResult]: For program point L24-1(lines 24 29) no Hoare annotation was computed. [2020-10-20 00:32:56,388 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 29) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_trunc_double_~x))) [2020-10-20 00:32:56,388 INFO L274 CegarLoopResult]: For program point L24-3(lines 24 29) no Hoare annotation was computed. [2020-10-20 00:32:56,389 INFO L274 CegarLoopResult]: For program point L49(lines 49 60) no Hoare annotation was computed. [2020-10-20 00:32:56,389 INFO L274 CegarLoopResult]: For program point L41-1(lines 41 47) no Hoare annotation was computed. [2020-10-20 00:32:56,389 INFO L270 CegarLoopResult]: At program point L41-2(lines 41 47) the Hoare annotation is: false [2020-10-20 00:32:56,390 INFO L274 CegarLoopResult]: For program point L33(lines 33 48) no Hoare annotation was computed. [2020-10-20 00:32:56,390 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:32:56,390 INFO L274 CegarLoopResult]: For program point L54-1(lines 54 59) no Hoare annotation was computed. [2020-10-20 00:32:56,390 INFO L270 CegarLoopResult]: At program point L54-2(lines 54 59) the Hoare annotation is: false [2020-10-20 00:32:56,390 INFO L274 CegarLoopResult]: For program point L54-3(lines 32 60) no Hoare annotation was computed. [2020-10-20 00:32:56,391 INFO L274 CegarLoopResult]: For program point L50(lines 50 52) no Hoare annotation was computed. [2020-10-20 00:32:56,391 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_trunc_double_~x) (= currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_trunc_double_#res|) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-10-20 00:32:56,391 INFO L274 CegarLoopResult]: For program point L75(lines 75 78) no Hoare annotation was computed. [2020-10-20 00:32:56,391 INFO L274 CegarLoopResult]: For program point L34-1(lines 34 39) no Hoare annotation was computed. [2020-10-20 00:32:56,391 INFO L270 CegarLoopResult]: At program point L34-2(lines 34 39) the Hoare annotation is: false [2020-10-20 00:32:56,392 INFO L277 CegarLoopResult]: At program point L80(lines 64 81) the Hoare annotation is: true [2020-10-20 00:32:56,405 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,406 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:32:56,408 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,410 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,410 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:32:56,410 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,412 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,412 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,412 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,413 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,413 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,413 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,414 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,414 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,414 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,415 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,415 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,415 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,416 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,416 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,417 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,417 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,417 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,418 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,418 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,419 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,419 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,419 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,420 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,420 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:32:56 BoogieIcfgContainer [2020-10-20 00:32:56,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:32:56,423 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:32:56,423 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:32:56,424 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:32:56,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:52" (3/4) ... [2020-10-20 00:32:56,428 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:32:56,441 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 00:32:56,442 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-20 00:32:56,443 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 00:32:56,443 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:32:56,474 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-10-20 00:32:56,475 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result [2020-10-20 00:32:56,476 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result) && 1bv32 == \result [2020-10-20 00:32:56,522 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:32:56,523 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:32:56,528 INFO L168 Benchmark]: Toolchain (without parser) took 5174.19 ms. Allocated memory was 38.8 MB in the beginning and 46.7 MB in the end (delta: 7.9 MB). Free memory was 17.3 MB in the beginning and 13.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:56,532 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 30.4 MB. Free memory was 6.5 MB in the beginning and 6.5 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:56,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.09 ms. Allocated memory was 38.8 MB in the beginning and 39.8 MB in the end (delta: 1.0 MB). Free memory was 16.4 MB in the beginning and 16.1 MB in the end (delta: 270.8 kB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:56,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.54 ms. Allocated memory is still 39.8 MB. Free memory was 16.1 MB in the beginning and 14.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:56,533 INFO L168 Benchmark]: Boogie Preprocessor took 38.03 ms. Allocated memory is still 39.8 MB. Free memory was 14.1 MB in the beginning and 12.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:56,534 INFO L168 Benchmark]: RCFGBuilder took 536.22 ms. Allocated memory was 39.8 MB in the beginning and 41.9 MB in the end (delta: 2.1 MB). Free memory was 12.0 MB in the beginning and 24.4 MB in the end (delta: -12.5 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:56,537 INFO L168 Benchmark]: TraceAbstraction took 4113.34 ms. Allocated memory was 41.9 MB in the beginning and 46.7 MB in the end (delta: 4.7 MB). Free memory was 23.9 MB in the beginning and 17.6 MB in the end (delta: 6.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:56,537 INFO L168 Benchmark]: Witness Printer took 99.67 ms. Allocated memory is still 46.7 MB. Free memory was 17.6 MB in the beginning and 13.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:56,542 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 30.4 MB. Free memory was 6.5 MB in the beginning and 6.5 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 327.09 ms. Allocated memory was 38.8 MB in the beginning and 39.8 MB in the end (delta: 1.0 MB). Free memory was 16.4 MB in the beginning and 16.1 MB in the end (delta: 270.8 kB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 47.54 ms. Allocated memory is still 39.8 MB. Free memory was 16.1 MB in the beginning and 14.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 38.03 ms. Allocated memory is still 39.8 MB. Free memory was 14.1 MB in the beginning and 12.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 536.22 ms. Allocated memory was 39.8 MB in the beginning and 41.9 MB in the end (delta: 2.1 MB). Free memory was 12.0 MB in the beginning and 24.4 MB in the end (delta: -12.5 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4113.34 ms. Allocated memory was 41.9 MB in the beginning and 46.7 MB in the end (delta: 4.7 MB). Free memory was 23.9 MB in the beginning and 17.6 MB in the end (delta: 6.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * Witness Printer took 99.67 ms. Allocated memory is still 46.7 MB. Free memory was 17.6 MB in the beginning and 13.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - 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 - 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 - 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 - 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 64]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant [2020-10-20 00:32:56,556 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,556 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:32:56,557 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,557 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,559 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-20 00:32:56,559 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 17]: Loop Invariant [2020-10-20 00:32:56,560 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,560 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,560 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,560 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,561 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,561 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,561 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,562 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,562 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,562 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,562 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,562 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result) && 1bv32 == \result - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant [2020-10-20 00:32:56,563 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,563 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,563 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,570 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,570 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,571 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,571 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,582 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,582 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,583 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:32:56,583 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:32:56,584 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 49 SDslu, 95 SDs, 0 SdLazy, 50 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 11 NumberOfFragments, 62 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 68 ConstructedInterpolants, 6 QuantifiedInterpolants, 4765 SizeOfPredicates, 17 NumberOfNonLiveVariables, 150 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...