./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.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-benchs/sqrt_Householder_pseudoconstant.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 05e3d6bcb2c03efb7d0e810a8633219e291af284 ............................................................................................................................................................................................................................................................................................... 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-benchs/sqrt_Householder_pseudoconstant.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 05e3d6bcb2c03efb7d0e810a8633219e291af284 ........................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:22:01,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:22:01,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:22:01,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:22:01,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:22:01,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:22:01,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:22:01,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:22:01,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:22:01,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:22:01,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:22:01,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:22:01,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:22:01,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:22:01,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:22:01,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:22:01,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:22:01,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:22:01,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:22:01,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:22:01,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:22:01,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:22:01,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:22:01,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:22:01,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:22:01,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:22:01,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:22:01,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:22:01,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:22:01,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:22:01,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:22:01,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:22:01,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:22:01,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:22:01,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:22:01,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:22:01,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:22:01,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:22:01,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:22:01,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:22:01,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:22:01,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:22:01,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:22:01,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:22:01,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:22:01,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:22:01,210 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:22:01,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:22:01,212 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:22:01,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:22:01,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:22:01,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:22:01,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:22:01,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:22:01,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:22:01,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:22:01,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:22:01,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:22:01,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:22:01,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:22:01,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:22:01,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:22:01,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:22:01,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:22:01,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:22:01,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:22:01,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:22:01,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:22:01,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:22:01,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:22:01,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:22:01,219 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 -> 05e3d6bcb2c03efb7d0e810a8633219e291af284 [2020-10-20 00:22:01,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:22:01,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:22:01,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:22:01,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:22:01,457 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:22:01,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-10-20 00:22:01,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec191b8a/cc9d3f151785422d9b1d960da268d985/FLAGd2064fccf [2020-10-20 00:22:01,919 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:22:01,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-10-20 00:22:01,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec191b8a/cc9d3f151785422d9b1d960da268d985/FLAGd2064fccf [2020-10-20 00:22:02,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec191b8a/cc9d3f151785422d9b1d960da268d985 [2020-10-20 00:22:02,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:22:02,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:22:02,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:22:02,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:22:02,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:22:02,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:22:02" (1/1) ... [2020-10-20 00:22:02,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22997cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:02, skipping insertion in model container [2020-10-20 00:22:02,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:22:02" (1/1) ... [2020-10-20 00:22:02,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:22:02,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:22:02,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:22:02,776 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:22:02,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:22:02,825 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:22:02,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:02 WrapperNode [2020-10-20 00:22:02,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:22:02,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:22:02,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:22:02,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:22:02,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:02" (1/1) ... [2020-10-20 00:22:02,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:02" (1/1) ... [2020-10-20 00:22:02,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:22:02,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:22:02,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:22:02,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:22:02,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:02" (1/1) ... [2020-10-20 00:22:02,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:02" (1/1) ... [2020-10-20 00:22:02,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:02" (1/1) ... [2020-10-20 00:22:02,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:02" (1/1) ... [2020-10-20 00:22:02,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:02" (1/1) ... [2020-10-20 00:22:02,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:02" (1/1) ... [2020-10-20 00:22:02,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:02" (1/1) ... [2020-10-20 00:22:02,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:22:02,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:22:02,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:22:02,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:22:02,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:02" (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 00:22:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:22:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:22:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:22:02,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:22:03,190 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:22:03,190 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-20 00:22:03,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:22:03 BoogieIcfgContainer [2020-10-20 00:22:03,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:22:03,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:22:03,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:22:03,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:22:03,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:22:02" (1/3) ... [2020-10-20 00:22:03,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2477322f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:22:03, skipping insertion in model container [2020-10-20 00:22:03,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:02" (2/3) ... [2020-10-20 00:22:03,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2477322f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:22:03, skipping insertion in model container [2020-10-20 00:22:03,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:22:03" (3/3) ... [2020-10-20 00:22:03,201 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2020-10-20 00:22:03,216 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:22:03,226 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:22:03,244 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:22:03,274 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:22:03,275 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:22:03,275 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:22:03,275 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:22:03,275 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:22:03,275 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:22:03,276 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:22:03,276 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:22:03,291 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-20 00:22:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:22:03,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:22:03,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:22:03,299 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:22:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:22:03,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2020-10-20 00:22:03,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:22:03,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912498820] [2020-10-20 00:22:03,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:22:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:22:03,463 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 00:22:03,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912498820] [2020-10-20 00:22:03,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:22:03,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:22:03,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544384200] [2020-10-20 00:22:03,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:22:03,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:22:03,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:22:03,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:22:03,484 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-20 00:22:03,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:22:03,499 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-20 00:22:03,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:22:03,500 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-20 00:22:03,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:22:03,509 INFO L225 Difference]: With dead ends: 35 [2020-10-20 00:22:03,509 INFO L226 Difference]: Without dead ends: 14 [2020-10-20 00:22:03,513 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 00:22:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-20 00:22:03,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-20 00:22:03,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-20 00:22:03,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-10-20 00:22:03,545 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2020-10-20 00:22:03,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:22:03,545 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-10-20 00:22:03,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:22:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-10-20 00:22:03,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:22:03,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:22:03,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:22:03,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:22:03,547 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:22:03,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:22:03,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2020-10-20 00:22:03,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:22:03,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357682850] [2020-10-20 00:22:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:22:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:22:03,591 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:22:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:22:03,614 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:22:03,642 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:22:03,643 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:22:03,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:22:03,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:22:03 BoogieIcfgContainer [2020-10-20 00:22:03,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:22:03,676 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:22:03,676 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:22:03,676 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:22:03,677 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:22:03" (3/4) ... [2020-10-20 00:22:03,689 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:22:03,690 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:22:03,693 INFO L168 Benchmark]: Toolchain (without parser) took 1335.96 ms. Allocated memory was 37.2 MB in the beginning and 48.8 MB in the end (delta: 11.5 MB). Free memory was 19.6 MB in the beginning and 29.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:22:03,696 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 34.1 MB. Free memory was 11.1 MB in the beginning and 11.1 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:22:03,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.47 ms. Allocated memory was 37.2 MB in the beginning and 44.6 MB in the end (delta: 7.3 MB). Free memory was 18.7 MB in the beginning and 24.6 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:22:03,699 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.77 ms. Allocated memory is still 44.6 MB. Free memory was 24.6 MB in the beginning and 22.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:22:03,700 INFO L168 Benchmark]: Boogie Preprocessor took 25.17 ms. Allocated memory is still 44.6 MB. Free memory was 22.7 MB in the beginning and 21.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:22:03,702 INFO L168 Benchmark]: RCFGBuilder took 301.56 ms. Allocated memory is still 44.6 MB. Free memory was 21.3 MB in the beginning and 18.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:22:03,703 INFO L168 Benchmark]: TraceAbstraction took 481.80 ms. Allocated memory was 44.6 MB in the beginning and 45.6 MB in the end (delta: 1.0 MB). Free memory was 17.7 MB in the beginning and 9.8 MB in the end (delta: 7.9 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:22:03,706 INFO L168 Benchmark]: Witness Printer took 14.70 ms. Allocated memory was 45.6 MB in the beginning and 48.8 MB in the end (delta: 3.1 MB). Free memory was 9.8 MB in the beginning and 29.7 MB in the end (delta: -19.9 MB). Peak memory consumption was 228.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:22:03,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 34.1 MB. Free memory was 11.1 MB in the beginning and 11.1 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 463.47 ms. Allocated memory was 37.2 MB in the beginning and 44.6 MB in the end (delta: 7.3 MB). Free memory was 18.7 MB in the beginning and 24.6 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 38.77 ms. Allocated memory is still 44.6 MB. Free memory was 24.6 MB in the beginning and 22.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 25.17 ms. Allocated memory is still 44.6 MB. Free memory was 22.7 MB in the beginning and 21.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 301.56 ms. Allocated memory is still 44.6 MB. Free memory was 21.3 MB in the beginning and 18.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 481.80 ms. Allocated memory was 44.6 MB in the beginning and 45.6 MB in the end (delta: 1.0 MB). Free memory was 17.7 MB in the beginning and 9.8 MB in the end (delta: 7.9 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. * Witness Printer took 14.70 ms. Allocated memory was 45.6 MB in the beginning and 48.8 MB in the end (delta: 3.1 MB). Free memory was 9.8 MB in the beginning and 29.7 MB in the end (delta: -19.9 MB). Peak memory consumption was 228.7 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 59, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44. Possible FailurePath: [L22] double _EPS = 1e-6; VAL [_EPS=1/1000000] [L49] double d, dd, r; [L50] double epsilon = 1e-8; [L52] d = 1. VAL [_EPS=1/1000000] [L52] COND TRUE d <= 20. [L54] dd = __VERIFIER_nondet_double() [L18] COND FALSE !(!cond) VAL [_EPS=1/1000000] [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; VAL [_EPS=1/1000000] [L28] COND TRUE Input <= 1.0 [L28] xn = 1.0 VAL [_EPS=1/1000000] [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [_EPS=1/1000000] [L35] COND FALSE !(\read(cond)) VAL [_EPS=1/1000000] [L44] return 1.0 / xnp1; VAL [_EPS=1/1000000] [L57] r = SqrtR(dd) [L20] COND TRUE !(cond) VAL [_EPS=1/1000000] [L3] __assert_fail("0", "sqrt_Householder_pseudoconstant.c", 3, "reach_error") VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 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 00:22:05,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:22:05,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:22:05,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:22:05,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:22:05,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:22:05,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:22:05,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:22:05,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:22:05,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:22:05,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:22:05,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:22:05,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:22:05,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:22:05,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:22:05,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:22:05,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:22:05,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:22:05,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:22:05,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:22:05,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:22:05,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:22:05,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:22:05,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:22:05,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:22:05,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:22:05,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:22:05,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:22:05,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:22:05,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:22:05,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:22:05,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:22:05,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:22:05,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:22:05,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:22:05,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:22:05,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:22:05,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:22:05,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:22:05,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:22:05,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:22:05,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:22:05,826 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:22:05,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:22:05,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:22:05,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:22:05,828 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:22:05,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:22:05,829 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:22:05,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:22:05,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:22:05,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:22:05,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:22:05,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:22:05,830 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:22:05,831 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:22:05,831 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:22:05,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:22:05,831 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:22:05,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:22:05,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:22:05,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:22:05,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:22:05,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:22:05,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:22:05,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:22:05,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:22:05,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:22:05,834 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:22:05,834 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:22:05,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:22:05,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:22:05,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:22:05,835 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 -> 05e3d6bcb2c03efb7d0e810a8633219e291af284 [2020-10-20 00:22:06,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:22:06,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:22:06,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:22:06,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:22:06,052 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:22:06,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-10-20 00:22:06,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/850e4e78b/603c23aaeed44e07be8b59086d95473a/FLAGf908cee8c [2020-10-20 00:22:06,531 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:22:06,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2020-10-20 00:22:06,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/850e4e78b/603c23aaeed44e07be8b59086d95473a/FLAGf908cee8c [2020-10-20 00:22:06,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/850e4e78b/603c23aaeed44e07be8b59086d95473a [2020-10-20 00:22:06,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:22:06,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:22:06,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:22:06,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:22:06,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:22:06,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:22:06" (1/1) ... [2020-10-20 00:22:06,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11096152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:06, skipping insertion in model container [2020-10-20 00:22:06,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:22:06" (1/1) ... [2020-10-20 00:22:06,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:22:06,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:22:07,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:22:07,231 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:22:07,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:22:07,278 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:22:07,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:07 WrapperNode [2020-10-20 00:22:07,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:22:07,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:22:07,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:22:07,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:22:07,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:07" (1/1) ... [2020-10-20 00:22:07,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:07" (1/1) ... [2020-10-20 00:22:07,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:22:07,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:22:07,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:22:07,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:22:07,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:07" (1/1) ... [2020-10-20 00:22:07,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:07" (1/1) ... [2020-10-20 00:22:07,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:07" (1/1) ... [2020-10-20 00:22:07,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:07" (1/1) ... [2020-10-20 00:22:07,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:07" (1/1) ... [2020-10-20 00:22:07,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:07" (1/1) ... [2020-10-20 00:22:07,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:07" (1/1) ... [2020-10-20 00:22:07,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:22:07,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:22:07,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:22:07,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:22:07,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:07" (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 00:22:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:22:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:22:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:22:07,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:22:16,824 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:22:16,825 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-20 00:22:16,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:22:16 BoogieIcfgContainer [2020-10-20 00:22:16,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:22:16,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:22:16,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:22:16,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:22:16,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:22:06" (1/3) ... [2020-10-20 00:22:16,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f87d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:22:16, skipping insertion in model container [2020-10-20 00:22:16,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:22:07" (2/3) ... [2020-10-20 00:22:16,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f87d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:22:16, skipping insertion in model container [2020-10-20 00:22:16,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:22:16" (3/3) ... [2020-10-20 00:22:16,835 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2020-10-20 00:22:16,847 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:22:16,854 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:22:16,866 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:22:16,891 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:22:16,892 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:22:16,892 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:22:16,892 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:22:16,893 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:22:16,893 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:22:16,893 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:22:16,894 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:22:16,921 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-20 00:22:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:22:16,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:22:16,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:22:16,933 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:22:16,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:22:16,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2020-10-20 00:22:16,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:22:16,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070053179] [2020-10-20 00:22:16,953 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 00:22:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:22:18,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:22:18,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:22:18,449 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 00:22:18,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:22:18,454 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 00:22:18,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070053179] [2020-10-20 00:22:18,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:22:18,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:22:18,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480171457] [2020-10-20 00:22:18,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:22:18,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:22:18,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:22:18,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:22:18,474 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-20 00:22:18,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:22:18,489 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-20 00:22:18,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:22:18,491 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-20 00:22:18,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:22:18,500 INFO L225 Difference]: With dead ends: 35 [2020-10-20 00:22:18,501 INFO L226 Difference]: Without dead ends: 14 [2020-10-20 00:22:18,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 00:22:18,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-20 00:22:18,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-20 00:22:18,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-20 00:22:18,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-10-20 00:22:18,548 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2020-10-20 00:22:18,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:22:18,548 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-10-20 00:22:18,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:22:18,549 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-10-20 00:22:18,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:22:18,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:22:18,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:22:18,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:22:18,764 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:22:18,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:22:18,764 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2020-10-20 00:22:18,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:22:18,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859837433] [2020-10-20 00:22:18,766 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 00:22:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:22:20,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:22:20,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:22:20,458 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 00:22:20,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:22:22,610 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) is different from false [2020-10-20 00:22:24,721 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) is different from true [2020-10-20 00:22:31,867 WARN L193 SmtUtils]: Spent 3.49 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2020-10-20 00:22:31,873 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 00:22:31,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859837433] [2020-10-20 00:22:31,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:22:31,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-20 00:22:31,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591942102] [2020-10-20 00:22:31,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 00:22:31,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:22:31,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 00:22:31,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2020-10-20 00:22:31,879 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 8 states. [2020-10-20 00:22:34,652 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_SqrtR_~xn~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (or (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5)) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)))) is different from true [2020-10-20 00:22:55,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:22:55,254 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2020-10-20 00:22:55,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:22:55,636 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-20 00:22:55,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:22:55,638 INFO L225 Difference]: With dead ends: 33 [2020-10-20 00:22:55,639 INFO L226 Difference]: Without dead ends: 21 [2020-10-20 00:22:55,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=19, Invalid=28, Unknown=3, NotChecked=22, Total=72 [2020-10-20 00:22:55,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-20 00:22:55,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-10-20 00:22:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-20 00:22:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-20 00:22:55,645 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2020-10-20 00:22:55,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:22:55,645 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-20 00:22:55,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 00:22:55,645 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-20 00:22:55,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:22:55,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:22:55,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:22:55,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:22:55,848 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:22:55,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:22:55,849 INFO L82 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2020-10-20 00:22:55,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:22:55,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464879483] [2020-10-20 00:22:55,851 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 00:22:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:22:59,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-20 00:22:59,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:22:59,539 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-10-20 00:22:59,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464879483] [2020-10-20 00:22:59,545 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:22:59,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [174247523] [2020-10-20 00:22:59,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:23:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:23:04,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-20 00:23:04,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:23:04,760 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:23:04,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508005480] [2020-10-20 00:23:04,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:23:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:23:35,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-20 00:23:35,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:23:36,475 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-10-20 00:23:36,478 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:23:36,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:23:36,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:23:36,479 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:23:36,479 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:23:37,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:23:37,101 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:23:37,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:23:37 BoogieIcfgContainer [2020-10-20 00:23:37,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:23:37,102 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:23:37,102 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:23:37,102 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:23:37,103 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:22:16" (3/4) ... [2020-10-20 00:23:37,105 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:23:37,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:23:37,107 INFO L168 Benchmark]: Toolchain (without parser) took 90220.48 ms. Allocated memory was 35.1 MB in the beginning and 48.8 MB in the end (delta: 13.6 MB). Free memory was 12.9 MB in the beginning and 18.8 MB in the end (delta: -5.9 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:37,108 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 33.6 MB. Free memory was 18.8 MB in the beginning and 18.8 MB in the end (delta: 31.2 kB). Peak memory consumption was 31.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:23:37,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.38 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 12.0 MB in the beginning and 23.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:37,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.96 ms. Allocated memory is still 44.0 MB. Free memory was 22.8 MB in the beginning and 21.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:37,110 INFO L168 Benchmark]: Boogie Preprocessor took 54.84 ms. Allocated memory is still 44.0 MB. Free memory was 21.0 MB in the beginning and 19.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:37,111 INFO L168 Benchmark]: RCFGBuilder took 9445.83 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 19.3 MB in the beginning and 15.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:37,112 INFO L168 Benchmark]: TraceAbstraction took 80273.58 ms. Allocated memory was 45.6 MB in the beginning and 48.8 MB in the end (delta: 3.1 MB). Free memory was 14.8 MB in the beginning and 19.1 MB in the end (delta: -4.3 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:23:37,113 INFO L168 Benchmark]: Witness Printer took 3.57 ms. Allocated memory is still 48.8 MB. Free memory was 19.1 MB in the beginning and 18.8 MB in the end (delta: 346.3 kB). Peak memory consumption was 346.3 kB. Max. memory is 14.3 GB. [2020-10-20 00:23:37,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 33.6 MB. Free memory was 18.8 MB in the beginning and 18.8 MB in the end (delta: 31.2 kB). Peak memory consumption was 31.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 386.38 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 12.0 MB in the beginning and 23.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 45.96 ms. Allocated memory is still 44.0 MB. Free memory was 22.8 MB in the beginning and 21.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 54.84 ms. Allocated memory is still 44.0 MB. Free memory was 21.0 MB in the beginning and 19.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 9445.83 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 19.3 MB in the beginning and 15.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 80273.58 ms. Allocated memory was 45.6 MB in the beginning and 48.8 MB in the end (delta: 3.1 MB). Free memory was 14.8 MB in the beginning and 19.1 MB in the end (delta: -4.3 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 3.57 ms. Allocated memory is still 48.8 MB. Free memory was 19.1 MB in the beginning and 18.8 MB in the end (delta: 346.3 kB). Peak memory consumption was 346.3 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: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, dd, r; [L50] double epsilon = 1e-8; [L52] d = 1. [L52] COND TRUE d <= 20. [L54] dd = __VERIFIER_nondet_double() [L18] COND FALSE !(!cond) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND FALSE !(Input <= 1.0) [L28] xn = 1.0/Input [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 [L35] COND FALSE !(\read(cond)) [L44] return 1.0 / xnp1; [L57] r = SqrtR(dd) [L20] COND TRUE !(cond) [L3] __assert_fail("0", "sqrt_Householder_pseudoconstant.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 80.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 23.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 4 SDslu, 23 SDs, 0 SdLazy, 26 SolverSat, 0 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 19.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 13.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 44 ConstructedInterpolants, 1 QuantifiedInterpolants, 2992 SizeOfPredicates, 8 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...