./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cbb939d5 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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/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 0.2.0-cbb939d [2020-11-23 15:59:06,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 15:59:06,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 15:59:06,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-23 15:59:06,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-23 15:59:06,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-23 15:59:06,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-23 15:59:06,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-23 15:59:06,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-23 15:59:06,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-23 15:59:06,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-23 15:59:06,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-23 15:59:06,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-23 15:59:06,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-23 15:59:06,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-23 15:59:06,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-23 15:59:06,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-23 15:59:06,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-23 15:59:06,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-23 15:59:06,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-23 15:59:06,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-23 15:59:06,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-23 15:59:07,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-23 15:59:07,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-23 15:59:07,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-23 15:59:07,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-23 15:59:07,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-23 15:59:07,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-23 15:59:07,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-23 15:59:07,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-23 15:59:07,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 15:59:07,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 15:59:07,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 15:59:07,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 15:59:07,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 15:59:07,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 15:59:07,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 15:59:07,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 15:59:07,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 15:59:07,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 15:59:07,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 15:59:07,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-23 15:59:07,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 15:59:07,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 15:59:07,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 15:59:07,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 15:59:07,096 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 15:59:07,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 15:59:07,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 15:59:07,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-23 15:59:07,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 15:59:07,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 15:59:07,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 15:59:07,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 15:59:07,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 15:59:07,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 15:59:07,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 15:59:07,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 15:59:07,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 15:59:07,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 15:59:07,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 15:59:07,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 15:59:07,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 15:59:07,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 15:59:07,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 15:59:07,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 15:59:07,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 15:59:07,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-23 15:59:07,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-23 15:59:07,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 15:59:07,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 15:59:07,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05e3d6bcb2c03efb7d0e810a8633219e291af284 [2020-11-23 15:59:07,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 15:59:07,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 15:59:07,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 15:59:07,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 15:59:07,611 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 15:59:07,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_pseudoconstant.c [2020-11-23 15:59:07,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07185096d/0eca469650444ecc966a2e7b97bfe805/FLAG9566a5538 [2020-11-23 15:59:08,306 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 15:59:08,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_Householder_pseudoconstant.c [2020-11-23 15:59:08,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07185096d/0eca469650444ecc966a2e7b97bfe805/FLAG9566a5538 [2020-11-23 15:59:08,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07185096d/0eca469650444ecc966a2e7b97bfe805 [2020-11-23 15:59:08,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 15:59:08,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 15:59:08,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 15:59:08,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 15:59:08,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 15:59:08,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:08" (1/1) ... [2020-11-23 15:59:08,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db1a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:08, skipping insertion in model container [2020-11-23 15:59:08,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:08" (1/1) ... [2020-11-23 15:59:08,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 15:59:08,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-23 15:59:08,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 15:59:09,003 INFO L203 MainTranslator]: Completed pre-run [2020-11-23 15:59:09,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 15:59:09,045 INFO L208 MainTranslator]: Completed translation [2020-11-23 15:59:09,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:09 WrapperNode [2020-11-23 15:59:09,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 15:59:09,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 15:59:09,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 15:59:09,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 15:59:09,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:09" (1/1) ... [2020-11-23 15:59:09,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:09" (1/1) ... [2020-11-23 15:59:09,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 15:59:09,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 15:59:09,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 15:59:09,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 15:59:09,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:09" (1/1) ... [2020-11-23 15:59:09,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:09" (1/1) ... [2020-11-23 15:59:09,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:09" (1/1) ... [2020-11-23 15:59:09,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:09" (1/1) ... [2020-11-23 15:59:09,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:09" (1/1) ... [2020-11-23 15:59:09,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:09" (1/1) ... [2020-11-23 15:59:09,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:09" (1/1) ... [2020-11-23 15:59:09,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 15:59:09,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 15:59:09,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 15:59:09,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 15:59:09,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:09" (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 [2020-11-23 15:59:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-23 15:59:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 15:59:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 15:59:09,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 15:59:09,498 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 15:59:09,498 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-23 15:59:09,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:09 BoogieIcfgContainer [2020-11-23 15:59:09,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 15:59:09,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 15:59:09,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 15:59:09,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 15:59:09,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:59:08" (1/3) ... [2020-11-23 15:59:09,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4677d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:09, skipping insertion in model container [2020-11-23 15:59:09,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:09" (2/3) ... [2020-11-23 15:59:09,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4677d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:09, skipping insertion in model container [2020-11-23 15:59:09,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:09" (3/3) ... [2020-11-23 15:59:09,512 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2020-11-23 15:59:09,531 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 15:59:09,536 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 15:59:09,561 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 15:59:09,634 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 15:59:09,636 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 15:59:09,636 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 15:59:09,637 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 15:59:09,637 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 15:59:09,637 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 15:59:09,637 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 15:59:09,637 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 15:59:09,679 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-23 15:59:09,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 15:59:09,694 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 15:59:09,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 15:59:09,697 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 15:59:09,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 15:59:09,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2020-11-23 15:59:09,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 15:59:09,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423354497] [2020-11-23 15:59:09,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 15:59:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 15:59:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 15:59:10,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423354497] [2020-11-23 15:59:10,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-23 15:59:10,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-23 15:59:10,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438143131] [2020-11-23 15:59:10,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-23 15:59:10,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-23 15:59:10,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-23 15:59:10,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-23 15:59:10,062 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-23 15:59:10,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 15:59:10,082 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-23 15:59:10,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-23 15:59:10,084 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-23 15:59:10,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 15:59:10,095 INFO L225 Difference]: With dead ends: 35 [2020-11-23 15:59:10,096 INFO L226 Difference]: Without dead ends: 14 [2020-11-23 15:59:10,100 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 [2020-11-23 15:59:10,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-23 15:59:10,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-23 15:59:10,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-23 15:59:10,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-23 15:59:10,140 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2020-11-23 15:59:10,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 15:59:10,141 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-23 15:59:10,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-23 15:59:10,141 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-23 15:59:10,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 15:59:10,142 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 15:59:10,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 15:59:10,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-23 15:59:10,143 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 15:59:10,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 15:59:10,144 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2020-11-23 15:59:10,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 15:59:10,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019137852] [2020-11-23 15:59:10,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 15:59:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 15:59:10,194 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 15:59:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 15:59:10,247 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 15:59:10,294 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-23 15:59:10,295 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-23 15:59:10,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-23 15:59:10,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:59:10 BoogieIcfgContainer [2020-11-23 15:59:10,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-23 15:59:10,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-23 15:59:10,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-23 15:59:10,359 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-23 15:59:10,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:09" (3/4) ... [2020-11-23 15:59:10,365 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-23 15:59:10,365 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-23 15:59:10,370 INFO L168 Benchmark]: Toolchain (without parser) took 1683.33 ms. Allocated memory is still 54.5 MB. Free memory was 31.1 MB in the beginning and 22.7 MB in the end (delta: 8.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-11-23 15:59:10,372 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 41.9 MB. Free memory was 21.4 MB in the beginning and 21.3 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 15:59:10,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.03 ms. Allocated memory is still 54.5 MB. Free memory was 30.4 MB in the beginning and 33.5 MB in the end (delta: -3.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-11-23 15:59:10,374 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.68 ms. Allocated memory is still 54.5 MB. Free memory was 33.5 MB in the beginning and 32.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 15:59:10,375 INFO L168 Benchmark]: Boogie Preprocessor took 30.48 ms. Allocated memory is still 54.5 MB. Free memory was 31.8 MB in the beginning and 30.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 15:59:10,375 INFO L168 Benchmark]: RCFGBuilder took 372.97 ms. Allocated memory is still 54.5 MB. Free memory was 30.6 MB in the beginning and 30.7 MB in the end (delta: -31.5 kB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-23 15:59:10,379 INFO L168 Benchmark]: TraceAbstraction took 855.62 ms. Allocated memory is still 54.5 MB. Free memory was 30.3 MB in the beginning and 23.1 MB in the end (delta: 7.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2020-11-23 15:59:10,380 INFO L168 Benchmark]: Witness Printer took 6.51 ms. Allocated memory is still 54.5 MB. Free memory was 23.1 MB in the beginning and 22.7 MB in the end (delta: 452.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 15:59:10,385 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 41.9 MB. Free memory was 21.4 MB in the beginning and 21.3 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.03 ms. Allocated memory is still 54.5 MB. Free memory was 30.4 MB in the beginning and 33.5 MB in the end (delta: -3.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.68 ms. Allocated memory is still 54.5 MB. Free memory was 33.5 MB in the beginning and 32.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.48 ms. Allocated memory is still 54.5 MB. Free memory was 31.8 MB in the beginning and 30.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 372.97 ms. Allocated memory is still 54.5 MB. Free memory was 30.6 MB in the beginning and 30.7 MB in the end (delta: -31.5 kB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 855.62 ms. Allocated memory is still 54.5 MB. Free memory was 30.3 MB in the beginning and 23.1 MB in the end (delta: 7.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. * Witness Printer took 6.51 ms. Allocated memory is still 54.5 MB. Free memory was 23.1 MB in the beginning and 22.7 MB in the end (delta: 452.8 kB). There was no memory consumed. Max. memory is 16.1 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: 0.6s, 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 0.2.0-cbb939d [2020-11-23 15:59:13,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 15:59:13,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 15:59:13,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-23 15:59:13,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-23 15:59:13,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-23 15:59:13,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-23 15:59:13,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-23 15:59:13,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-23 15:59:13,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-23 15:59:13,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-23 15:59:13,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-23 15:59:13,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-23 15:59:13,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-23 15:59:13,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-23 15:59:13,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-23 15:59:13,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-23 15:59:13,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-23 15:59:13,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-23 15:59:13,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-23 15:59:13,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-23 15:59:13,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-23 15:59:13,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-23 15:59:13,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-23 15:59:13,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-23 15:59:13,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-23 15:59:13,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-23 15:59:13,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-23 15:59:13,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-23 15:59:13,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-23 15:59:13,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 15:59:13,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 15:59:13,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 15:59:13,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 15:59:13,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 15:59:13,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 15:59:13,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 15:59:13,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 15:59:13,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 15:59:13,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 15:59:13,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 15:59:13,778 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-23 15:59:13,836 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 15:59:13,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 15:59:13,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 15:59:13,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 15:59:13,844 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 15:59:13,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 15:59:13,844 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 15:59:13,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 15:59:13,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 15:59:13,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 15:59:13,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 15:59:13,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 15:59:13,847 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-23 15:59:13,848 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-23 15:59:13,848 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 15:59:13,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 15:59:13,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 15:59:13,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 15:59:13,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 15:59:13,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 15:59:13,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 15:59:13,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 15:59:13,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 15:59:13,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 15:59:13,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 15:59:13,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 15:59:13,852 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-23 15:59:13,852 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-23 15:59:13,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 15:59:13,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 15:59:13,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-23 15:59:13,854 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05e3d6bcb2c03efb7d0e810a8633219e291af284 [2020-11-23 15:59:14,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 15:59:14,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 15:59:14,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 15:59:14,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 15:59:14,469 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 15:59:14,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_pseudoconstant.c [2020-11-23 15:59:14,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509253253/d11d8c7f530b4859b837e48afa9f7b7d/FLAG482dd5ee3 [2020-11-23 15:59:15,321 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 15:59:15,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_Householder_pseudoconstant.c [2020-11-23 15:59:15,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509253253/d11d8c7f530b4859b837e48afa9f7b7d/FLAG482dd5ee3 [2020-11-23 15:59:15,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509253253/d11d8c7f530b4859b837e48afa9f7b7d [2020-11-23 15:59:15,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 15:59:15,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 15:59:15,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 15:59:15,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 15:59:15,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 15:59:15,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:15" (1/1) ... [2020-11-23 15:59:15,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73b74ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:15, skipping insertion in model container [2020-11-23 15:59:15,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:15" (1/1) ... [2020-11-23 15:59:15,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 15:59:15,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-23 15:59:16,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 15:59:16,075 INFO L203 MainTranslator]: Completed pre-run [2020-11-23 15:59:16,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 15:59:16,178 INFO L208 MainTranslator]: Completed translation [2020-11-23 15:59:16,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:16 WrapperNode [2020-11-23 15:59:16,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 15:59:16,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 15:59:16,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 15:59:16,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 15:59:16,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:16" (1/1) ... [2020-11-23 15:59:16,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:16" (1/1) ... [2020-11-23 15:59:16,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 15:59:16,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 15:59:16,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 15:59:16,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 15:59:16,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:16" (1/1) ... [2020-11-23 15:59:16,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:16" (1/1) ... [2020-11-23 15:59:16,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:16" (1/1) ... [2020-11-23 15:59:16,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:16" (1/1) ... [2020-11-23 15:59:16,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:16" (1/1) ... [2020-11-23 15:59:16,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:16" (1/1) ... [2020-11-23 15:59:16,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:16" (1/1) ... [2020-11-23 15:59:16,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 15:59:16,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 15:59:16,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 15:59:16,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 15:59:16,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:16" (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 [2020-11-23 15:59:16,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-23 15:59:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 15:59:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 15:59:16,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 15:59:26,032 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 15:59:26,032 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-23 15:59:26,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:26 BoogieIcfgContainer [2020-11-23 15:59:26,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 15:59:26,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 15:59:26,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 15:59:26,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 15:59:26,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:59:15" (1/3) ... [2020-11-23 15:59:26,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b46666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:26, skipping insertion in model container [2020-11-23 15:59:26,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:16" (2/3) ... [2020-11-23 15:59:26,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b46666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:26, skipping insertion in model container [2020-11-23 15:59:26,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:26" (3/3) ... [2020-11-23 15:59:26,045 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2020-11-23 15:59:26,062 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 15:59:26,067 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 15:59:26,081 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 15:59:26,111 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 15:59:26,112 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 15:59:26,112 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 15:59:26,112 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 15:59:26,112 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 15:59:26,113 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 15:59:26,113 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 15:59:26,113 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 15:59:26,127 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-23 15:59:26,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 15:59:26,134 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 15:59:26,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 15:59:26,135 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 15:59:26,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 15:59:26,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2020-11-23 15:59:26,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 15:59:26,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825779362] [2020-11-23 15:59:26,158 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 [2020-11-23 15:59:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 15:59:27,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-23 15:59:27,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 15:59:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 15:59:27,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 15:59:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 15:59:27,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825779362] [2020-11-23 15:59:27,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-23 15:59:27,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-23 15:59:27,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949325510] [2020-11-23 15:59:27,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-23 15:59:27,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 15:59:27,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-23 15:59:27,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-23 15:59:27,850 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-23 15:59:27,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 15:59:27,866 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-23 15:59:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-23 15:59:27,868 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-23 15:59:27,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 15:59:27,878 INFO L225 Difference]: With dead ends: 35 [2020-11-23 15:59:27,879 INFO L226 Difference]: Without dead ends: 14 [2020-11-23 15:59:27,882 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 [2020-11-23 15:59:27,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-23 15:59:27,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-23 15:59:27,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-23 15:59:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-23 15:59:27,920 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2020-11-23 15:59:27,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 15:59:27,920 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-23 15:59:27,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-23 15:59:27,921 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-23 15:59:27,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 15:59:27,922 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 15:59:27,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 15:59:28,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-23 15:59:28,136 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 15:59:28,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 15:59:28,139 INFO L82 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2020-11-23 15:59:28,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 15:59:28,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666611755] [2020-11-23 15:59:28,140 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 [2020-11-23 15:59:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 15:59:29,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-23 15:59:29,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 15:59:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 15:59:29,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 15:59:32,129 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 [2020-11-23 15:59:34,267 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 [2020-11-23 15:59:39,428 WARN L194 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2020-11-23 15:59:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 15:59:39,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666611755] [2020-11-23 15:59:39,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-23 15:59:39,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-23 15:59:39,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847475089] [2020-11-23 15:59:39,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-23 15:59:39,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 15:59:39,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-23 15:59:39,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2020-11-23 15:59:39,437 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 8 states. [2020-11-23 15:59:42,521 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 [2020-11-23 15:59:59,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 15:59:59,563 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2020-11-23 15:59:59,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-23 15:59:59,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-11-23 15:59:59,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 15:59:59,994 INFO L225 Difference]: With dead ends: 33 [2020-11-23 15:59:59,994 INFO L226 Difference]: Without dead ends: 21 [2020-11-23 15:59:59,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=19, Invalid=28, Unknown=3, NotChecked=22, Total=72 [2020-11-23 15:59:59,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-23 16:00:00,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-11-23 16:00:00,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-23 16:00:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-23 16:00:00,002 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2020-11-23 16:00:00,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:00:00,002 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-23 16:00:00,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-23 16:00:00,003 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-23 16:00:00,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 16:00:00,004 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:00:00,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:00:00,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-23 16:00:00,218 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:00:00,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:00:00,220 INFO L82 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2020-11-23 16:00:00,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 16:00:00,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260615948] [2020-11-23 16:00:00,221 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 [2020-11-23 16:00:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:00:03,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-23 16:00:03,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:00:04,265 WARN L194 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-23 16:00:04,281 INFO L387 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-23 16:00:04,282 INFO L615 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-23 16:00:04,894 WARN L194 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-23 16:00:05,273 WARN L194 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-23 16:00:07,718 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= c_ULTIMATE.start_SqrtR_~xn~0 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 .cse1)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse0 .cse1)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)))) is different from false [2020-11-23 16:00:07,757 INFO L615 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-23 16:00:07,760 INFO L615 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-23 16:00:12,227 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_currentRoundingMode roundNearestTiesToEven)) (.cse6 (= (_ bv1 32) c_ULTIMATE.start_SqrtR_~cond~0))) (or (and .cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse5 (fp.div c_currentRoundingMode .cse1 ULTIMATE.start_SqrtR_~Input))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse1 .cse2)) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse4 (fp.add c_currentRoundingMode .cse5 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse3) .cse4) (fp.mul c_currentRoundingMode .cse3 .cse4))) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse1 .cse2)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse5))))) .cse6) (and .cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse10 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse12 (fp.div c_currentRoundingMode .cse10 ULTIMATE.start_SqrtR_~Input))) (let ((.cse8 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse9 (fp.add c_currentRoundingMode .cse12 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse7 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse8) .cse9)) (.cse11 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (and (not (fp.gt .cse7 (fp.mul c_currentRoundingMode .cse8 .cse9))) (not (fp.lt .cse7 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse10 .cse11)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse10 .cse11)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse10)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse12))))))) (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0)) (and .cse0 (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse14 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse15 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse13 (fp.div c_currentRoundingMode .cse14 ULTIMATE.start_SqrtR_~Input))) (and (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode .cse13 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse14 .cse15)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse14 .cse15)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse14)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse13))))) .cse6))) is different from false [2020-11-23 16:00:14,703 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse5 (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode .cse5 c_ULTIMATE.start_SqrtR_~xnp1~0))) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (and (not (fp.gt .cse0 (fp.mul c_currentRoundingMode .cse1 .cse2))) (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 .cse4)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse3 .cse4)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)) (= c_ULTIMATE.start_SqrtR_~xnp1~0 .cse5)))))))) is different from false [2020-11-23 16:00:19,209 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse5 (fp.add c_currentRoundingMode .cse1 .cse1))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))) (.cse3 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse4) .cse5))) (and (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse0 .cse1)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 .cse2)) (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub c_currentRoundingMode .cse0 .cse2)) (not (fp.lt .cse3 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.gt .cse3 (fp.mul c_currentRoundingMode .cse4 .cse5))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0))))))))) is different from false [2020-11-23 16:00:19,226 INFO L615 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-23 16:00:24,911 INFO L615 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-23 16:00:42,868 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (or (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse4 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse3) .cse4)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse0 .cse1)) (not (fp.lt .cse2 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (not (fp.gt .cse2 (fp.mul roundNearestTiesToEven .cse3 .cse4))) (not (fp.leq (fp.div roundNearestTiesToEven .cse0 .cse5) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse0 .cse1)))))))) .cse6) (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse10 (fp.div roundNearestTiesToEven .cse7 ULTIMATE.start_SqrtR_~Input))) (let ((.cse11 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse12 (fp.add roundNearestTiesToEven .cse10 .cse10))) (let ((.cse9 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse11) .cse12)) (.cse8 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse7 .cse8)) (not (fp.lt .cse9 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.geq (fp.div roundNearestTiesToEven .cse7 .cse10) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse7)) (not (fp.gt .cse9 (fp.mul roundNearestTiesToEven .cse11 .cse12))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse7 .cse8)))))))) .cse6) (and (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse13 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse19 (fp.div roundNearestTiesToEven .cse13 ULTIMATE.start_SqrtR_~Input))) (let ((.cse17 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse18 (fp.add roundNearestTiesToEven .cse19 .cse19))) (let ((.cse16 (fp.div roundNearestTiesToEven .cse13 .cse19)) (.cse15 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse17) .cse18)) (.cse14 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse13 .cse14)) (not (fp.lt .cse15 ULTIMATE.start_SqrtR_~linf~0)) (fp.geq .cse16 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0))) (fp.leq .cse16 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse13)) (not (fp.gt .cse15 (fp.mul roundNearestTiesToEven .cse17 .cse18))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse13 .cse14))))))))))) is different from false [2020-11-23 16:00:57,909 WARN L838 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse4 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse3) .cse4)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse0 .cse1)) (not (fp.lt .cse2 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (not (fp.gt .cse2 (fp.mul roundNearestTiesToEven .cse3 .cse4))) (not (fp.leq (fp.div roundNearestTiesToEven .cse0 .cse5) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse0 .cse1)))))))) (exists ((v_prenex_1 (_ FloatingPoint 11 53)) (v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse9 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse10 (fp.div roundNearestTiesToEven .cse9 v_prenex_1))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse8 (fp.add roundNearestTiesToEven .cse10 .cse10))) (let ((.cse11 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse6 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse7) .cse8))) (and (not (fp.gt .cse6 (fp.mul roundNearestTiesToEven .cse7 .cse8))) (not (fp.leq v_prenex_1 .cse9)) (not (fp.geq (fp.div roundNearestTiesToEven .cse9 .cse10) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (fp.geq v_prenex_1 (fp.sub roundNearestTiesToEven .cse9 .cse11)) (fp.leq v_prenex_1 (fp.add roundNearestTiesToEven .cse9 .cse11)) (not (fp.lt .cse6 v_prenex_2))))))))) is different from false [2020-11-23 16:01:00,661 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse4 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse2 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse3) .cse4)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (and (fp.geq ULTIMATE.start_SqrtR_~Input (fp.sub roundNearestTiesToEven .cse0 .cse1)) (not (fp.lt .cse2 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (not (fp.gt .cse2 (fp.mul roundNearestTiesToEven .cse3 .cse4))) (not (fp.leq (fp.div roundNearestTiesToEven .cse0 .cse5) ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse0 .cse1)))))))) (exists ((v_prenex_1 (_ FloatingPoint 11 53)) (v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse9 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse10 (fp.div roundNearestTiesToEven .cse9 v_prenex_1))) (let ((.cse7 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse8 (fp.add roundNearestTiesToEven .cse10 .cse10))) (let ((.cse11 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0))) (.cse6 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse7) .cse8))) (and (not (fp.gt .cse6 (fp.mul roundNearestTiesToEven .cse7 .cse8))) (not (fp.leq v_prenex_1 .cse9)) (not (fp.geq (fp.div roundNearestTiesToEven .cse9 .cse10) ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (fp.geq v_prenex_1 (fp.sub roundNearestTiesToEven .cse9 .cse11)) (fp.leq v_prenex_1 (fp.add roundNearestTiesToEven .cse9 .cse11)) (not (fp.lt .cse6 v_prenex_2))))))))) is different from true [2020-11-23 16:01:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:01:00,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 16:01:03,317 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))))) is different from false [2020-11-23 16:01:05,753 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))))) is different from true [2020-11-23 16:01:08,181 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))))) (not (= (_ bv0 32) c_ULTIMATE.start_SqrtR_~cond~0))) is different from false [2020-11-23 16:01:12,994 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ 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_7))) (.cse1 (let ((.cse3 (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) .cse3) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse3)))) (.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (or .cse0 .cse1 (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (or .cse0 .cse1 (fp.geq .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0)))))) is different from false [2020-11-23 16:01:15,563 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ 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_7))) (.cse1 (let ((.cse3 (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) .cse3) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse3)))) (.cse2 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (or .cse0 .cse1 (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 5.0))) (or .cse0 .cse1 (fp.geq .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0)))))) is different from true [2020-11-23 16:01:17,219 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-23 16:01:17,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260615948] [2020-11-23 16:01:17,221 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-11-23 16:01:17,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [776101916] [2020-11-23 16:01:17,222 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 [2020-11-23 16:01:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:01:23,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-23 16:01:23,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:01:23,095 INFO L387 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-23 16:01:23,096 INFO L615 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-23 16:01:23,097 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken [2020-11-23 16:01:23,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749817673] [2020-11-23 16:01:23,098 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 [2020-11-23 16:01:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:01:59,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-23 16:01:59,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:01:59,175 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@5edf28e7 [2020-11-23 16:01:59,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-11-23 16:01:59,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-11-23 16:01:59,176 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-11-23 16:01:59,176 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-23 16:01:59,781 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 [2020-11-23 16:01:59,804 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-23 16:01:59,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:01:59 BoogieIcfgContainer [2020-11-23 16:01:59,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-23 16:01:59,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-23 16:01:59,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-23 16:01:59,807 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-23 16:01:59,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:26" (3/4) ... [2020-11-23 16:01:59,811 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-23 16:01:59,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-23 16:01:59,813 INFO L168 Benchmark]: Toolchain (without parser) took 164118.53 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.7 MB in the beginning and 47.5 MB in the end (delta: -14.9 MB). Peak memory consumption was 524.5 kB. Max. memory is 16.1 GB. [2020-11-23 16:01:59,814 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 37.7 MB. Free memory was 20.1 MB in the beginning and 20.0 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:01:59,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.73 ms. Allocated memory is still 54.5 MB. Free memory was 32.0 MB in the beginning and 36.2 MB in the end (delta: -4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-23 16:01:59,816 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.75 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 34.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:01:59,817 INFO L168 Benchmark]: Boogie Preprocessor took 75.56 ms. Allocated memory is still 54.5 MB. Free memory was 34.6 MB in the beginning and 33.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-23 16:01:59,818 INFO L168 Benchmark]: RCFGBuilder took 9683.77 ms. Allocated memory is still 54.5 MB. Free memory was 33.2 MB in the beginning and 34.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-11-23 16:01:59,819 INFO L168 Benchmark]: TraceAbstraction took 153768.70 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 34.1 MB in the beginning and 47.5 MB in the end (delta: -13.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:01:59,819 INFO L168 Benchmark]: Witness Printer took 5.38 ms. Allocated memory is still 67.1 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:01:59,824 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 37.7 MB. Free memory was 20.1 MB in the beginning and 20.0 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 476.73 ms. Allocated memory is still 54.5 MB. Free memory was 32.0 MB in the beginning and 36.2 MB in the end (delta: -4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.75 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 34.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.56 ms. Allocated memory is still 54.5 MB. Free memory was 34.6 MB in the beginning and 33.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9683.77 ms. Allocated memory is still 54.5 MB. Free memory was 33.2 MB in the beginning and 34.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 153768.70 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 34.1 MB in the beginning and 47.5 MB in the end (delta: -13.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.38 ms. Allocated memory is still 67.1 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 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: 153.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 20.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 4 SDslu, 23 SDs, 0 SdLazy, 26 SolverSat, 0 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 16.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 11.6s 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, 3.0s SatisfiabilityAnalysisTime, 9.8s 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 Received shutdown request...