./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1121b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c1f4b5c4 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1121b.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c6c05365b181d4eacf1f0a2b19f094d722c4a6a .................................................................................................................................................................................................................................................................................................... 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 -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1121b.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c6c05365b181d4eacf1f0a2b19f094d722c4a6a ......................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-c1f4b5c [2019-12-08 15:54:40,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 15:54:40,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 15:54:40,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 15:54:40,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 15:54:40,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 15:54:40,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 15:54:40,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 15:54:40,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 15:54:40,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 15:54:40,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 15:54:40,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 15:54:40,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 15:54:40,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 15:54:40,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 15:54:40,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 15:54:40,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 15:54:40,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 15:54:40,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 15:54:40,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 15:54:40,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 15:54:40,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 15:54:40,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 15:54:40,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 15:54:40,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 15:54:40,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 15:54:40,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 15:54:40,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 15:54:40,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 15:54:40,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 15:54:40,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:40,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:40,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:40,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:40,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:40,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:40,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:40,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:40,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:40,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:40,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:40,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-08 15:54:40,528 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:40,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:40,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:40,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:40,533 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:40,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:40,534 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:40,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-08 15:54:40,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:40,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:40,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:40,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:40,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:40,537 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:40,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:40,538 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:40,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:40,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:40,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:40,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:40,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:40,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:40,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:40,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:40,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:40,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-08 15:54:40,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-08 15:54:40,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:40,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:40,543 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6c05365b181d4eacf1f0a2b19f094d722c4a6a [2019-12-08 15:54:40,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:40,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:40,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:40,885 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:40,885 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:40,886 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2019-12-08 15:54:40,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b197f2f6c/ba06cb5e24d34ff29d4d690dd0f24290/FLAGa567d32da [2019-12-08 15:54:41,427 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:41,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2019-12-08 15:54:41,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b197f2f6c/ba06cb5e24d34ff29d4d690dd0f24290/FLAGa567d32da [2019-12-08 15:54:41,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b197f2f6c/ba06cb5e24d34ff29d4d690dd0f24290 [2019-12-08 15:54:41,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:41,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:41,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:41,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:41,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:41,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:41" (1/1) ... [2019-12-08 15:54:41,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@621789d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:41, skipping insertion in model container [2019-12-08 15:54:41,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:41" (1/1) ... [2019-12-08 15:54:41,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:41,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:42,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:42,104 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:42,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:42,230 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:42,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:42 WrapperNode [2019-12-08 15:54:42,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:42,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:42,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:42,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:42,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:42" (1/1) ... [2019-12-08 15:54:42,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:42" (1/1) ... [2019-12-08 15:54:42,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:42,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:42,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:42,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:42,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:42" (1/1) ... [2019-12-08 15:54:42,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:42" (1/1) ... [2019-12-08 15:54:42,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:42" (1/1) ... [2019-12-08 15:54:42,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:42" (1/1) ... [2019-12-08 15:54:42,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:42" (1/1) ... [2019-12-08 15:54:42,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:42" (1/1) ... [2019-12-08 15:54:42,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:42" (1/1) ... [2019-12-08 15:54:42,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:42,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:42,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:42,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:42,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:42" (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 [2019-12-08 15:54:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-08 15:54:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-08 15:54:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-08 15:54:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:42,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-08 15:54:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-12-08 15:54:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:54:42,946 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:54:42,946 INFO L287 CfgBuilder]: Removed 22 assume(true) statements. [2019-12-08 15:54:42,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:42 BoogieIcfgContainer [2019-12-08 15:54:42,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:54:42,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:54:42,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:54:42,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:54:42,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:41" (1/3) ... [2019-12-08 15:54:42,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795a8f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:42, skipping insertion in model container [2019-12-08 15:54:42,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:42" (2/3) ... [2019-12-08 15:54:42,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795a8f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:42, skipping insertion in model container [2019-12-08 15:54:42,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:42" (3/3) ... [2019-12-08 15:54:42,954 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121b.c [2019-12-08 15:54:42,963 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:54:42,971 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:54:42,980 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:54:42,999 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:54:43,000 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:54:43,000 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:54:43,000 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:54:43,000 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:54:43,000 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:54:43,001 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:54:43,001 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:54:43,015 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-12-08 15:54:43,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-08 15:54:43,023 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:43,024 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:43,024 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:43,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:43,031 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2019-12-08 15:54:43,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:43,040 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515340727] [2019-12-08 15:54:43,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:43,160 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515340727] [2019-12-08 15:54:43,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:43,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-08 15:54:43,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82292713] [2019-12-08 15:54:43,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:54:43,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-08 15:54:43,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:54:43,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:43,178 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-12-08 15:54:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:43,203 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2019-12-08 15:54:43,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:54:43,204 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-08 15:54:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:43,214 INFO L225 Difference]: With dead ends: 108 [2019-12-08 15:54:43,215 INFO L226 Difference]: Without dead ends: 52 [2019-12-08 15:54:43,219 INFO L631 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 [2019-12-08 15:54:43,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-12-08 15:54:43,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-12-08 15:54:43,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-08 15:54:43,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2019-12-08 15:54:43,256 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2019-12-08 15:54:43,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:43,257 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2019-12-08 15:54:43,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:54:43,257 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2019-12-08 15:54:43,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-08 15:54:43,258 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:43,258 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:43,259 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:43,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:43,259 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2019-12-08 15:54:43,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:43,260 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466379217] [2019-12-08 15:54:43,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:43,461 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-08 15:54:43,461 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:54:43,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:54:43 BoogieIcfgContainer [2019-12-08 15:54:43,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:54:43,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:54:43,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:54:43,496 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:54:43,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:42" (3/4) ... [2019-12-08 15:54:43,501 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-08 15:54:43,501 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:54:43,504 INFO L168 Benchmark]: Toolchain (without parser) took 1732.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -94.6 MB). Peak memory consumption was 43.8 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:43,504 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:43,505 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -168.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:43,506 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:43,507 INFO L168 Benchmark]: Boogie Preprocessor took 44.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:43,507 INFO L168 Benchmark]: RCFGBuilder took 604.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:43,508 INFO L168 Benchmark]: TraceAbstraction took 547.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:43,509 INFO L168 Benchmark]: Witness Printer took 5.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:43,513 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 459.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -168.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 66.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 604.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 547.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 175]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 170, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={3:0}] [L169] double x = __VERIFIER_nondet_double(); [L170] double y = -0.0; [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={3:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={3:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={3:0}] [L171] double res = fmod_double(x, y); [L16] return x != x; VAL [one_fmod=1, Zero_fmod={3:0}] [L174] COND TRUE !isnan_double(res) [L175] __VERIFIER_error() VAL [one_fmod=1, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 81 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=55occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-c1f4b5c [2019-12-08 15:54:45,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 15:54:45,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 15:54:45,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 15:54:45,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 15:54:45,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 15:54:45,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 15:54:45,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 15:54:45,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 15:54:45,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 15:54:45,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 15:54:45,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 15:54:45,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 15:54:45,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 15:54:45,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 15:54:45,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 15:54:45,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 15:54:45,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 15:54:45,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 15:54:45,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 15:54:45,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 15:54:45,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 15:54:45,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 15:54:45,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 15:54:45,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 15:54:45,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 15:54:45,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 15:54:45,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 15:54:45,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 15:54:45,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 15:54:45,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:45,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:45,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:45,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:45,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:45,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:45,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:45,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:45,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:45,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:45,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:45,471 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-08 15:54:45,509 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:45,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:45,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:45,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:45,513 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:45,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:45,513 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:45,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:45,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:45,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:45,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:45,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:45,520 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-08 15:54:45,520 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-08 15:54:45,520 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:45,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:45,521 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:45,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:45,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:45,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:45,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:45,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:45,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:45,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:45,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:45,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:45,524 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-08 15:54:45,524 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-08 15:54:45,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:45,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:45,525 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-08 15:54:45,525 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6c05365b181d4eacf1f0a2b19f094d722c4a6a [2019-12-08 15:54:45,872 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:45,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:45,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:45,890 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:45,891 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:45,891 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2019-12-08 15:54:45,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/662cbd091/7a71d2c7450a44f4847772a54e77a50a/FLAGb61aaeaba [2019-12-08 15:54:46,490 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:46,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2019-12-08 15:54:46,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/662cbd091/7a71d2c7450a44f4847772a54e77a50a/FLAGb61aaeaba [2019-12-08 15:54:46,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/662cbd091/7a71d2c7450a44f4847772a54e77a50a [2019-12-08 15:54:46,821 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:46,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:46,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:46,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:46,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:46,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:46" (1/1) ... [2019-12-08 15:54:46,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd8df05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:46, skipping insertion in model container [2019-12-08 15:54:46,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:46" (1/1) ... [2019-12-08 15:54:46,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:46,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:47,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:47,228 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:47,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:47,318 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:47,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:47 WrapperNode [2019-12-08 15:54:47,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:47,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:47,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:47,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:47,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:47" (1/1) ... [2019-12-08 15:54:47,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:47" (1/1) ... [2019-12-08 15:54:47,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:47,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:47,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:47,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:47,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:47" (1/1) ... [2019-12-08 15:54:47,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:47" (1/1) ... [2019-12-08 15:54:47,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:47" (1/1) ... [2019-12-08 15:54:47,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:47" (1/1) ... [2019-12-08 15:54:47,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:47" (1/1) ... [2019-12-08 15:54:47,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:47" (1/1) ... [2019-12-08 15:54:47,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:47" (1/1) ... [2019-12-08 15:54:47,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:47,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:47,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:47,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:47,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:47" (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 [2019-12-08 15:54:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-08 15:54:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-08 15:54:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-12-08 15:54:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-08 15:54:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:47,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-08 15:54:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:54:51,261 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:54:51,261 INFO L287 CfgBuilder]: Removed 22 assume(true) statements. [2019-12-08 15:54:51,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:51 BoogieIcfgContainer [2019-12-08 15:54:51,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:54:51,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:54:51,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:54:51,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:54:51,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:46" (1/3) ... [2019-12-08 15:54:51,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ff41bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:51, skipping insertion in model container [2019-12-08 15:54:51,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:47" (2/3) ... [2019-12-08 15:54:51,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ff41bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:51, skipping insertion in model container [2019-12-08 15:54:51,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:51" (3/3) ... [2019-12-08 15:54:51,269 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121b.c [2019-12-08 15:54:51,277 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:54:51,284 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:54:51,293 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:54:51,314 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:54:51,315 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:54:51,315 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:54:51,315 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:54:51,315 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:54:51,315 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:54:51,316 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:54:51,316 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:54:51,333 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-12-08 15:54:51,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-08 15:54:51,340 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:51,341 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:51,342 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:51,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:51,348 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2019-12-08 15:54:51,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:54:51,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941533790] [2019-12-08 15:54:51,361 INFO L94 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 [2019-12-08 15:54:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:52,296 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-08 15:54:52,301 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-08 15:54:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:52,313 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-08 15:54:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:52,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941533790] [2019-12-08 15:54:52,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:52,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-08 15:54:52,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452684857] [2019-12-08 15:54:52,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:54:52,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-08 15:54:52,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:54:52,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:52,336 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-12-08 15:54:52,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:52,359 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2019-12-08 15:54:52,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:54:52,361 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-08 15:54:52,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:52,379 INFO L225 Difference]: With dead ends: 108 [2019-12-08 15:54:52,379 INFO L226 Difference]: Without dead ends: 52 [2019-12-08 15:54:52,382 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:52,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-12-08 15:54:52,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-12-08 15:54:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-08 15:54:52,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2019-12-08 15:54:52,426 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2019-12-08 15:54:52,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:52,427 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2019-12-08 15:54:52,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:54:52,427 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2019-12-08 15:54:52,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-08 15:54:52,428 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:52,428 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:52,644 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-08 15:54:52,645 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:52,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:52,646 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2019-12-08 15:54:52,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:54:52,648 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709395590] [2019-12-08 15:54:52,648 INFO L94 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 [2019-12-08 15:54:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:53,756 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-08 15:54:53,758 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-08 15:55:04,549 WARN L192 SmtUtils]: Spent 3.77 s on a formula simplification that was a NOOP. DAG size: 9 [2019-12-08 15:55:04,553 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-08 15:55:13,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:55:13,287 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-08 15:55:26,583 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2019-12-08 15:55:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:55:28,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709395590] [2019-12-08 15:55:28,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:55:28,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-12-08 15:55:28,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054611868] [2019-12-08 15:55:28,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-08 15:55:28,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-08 15:55:28,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-08 15:55:28,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=69, Unknown=2, NotChecked=16, Total=110 [2019-12-08 15:55:28,457 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand 11 states. [2019-12-08 15:55:32,585 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_fmod_double_~y (fp.neg (_ +zero 11 53))) (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0))))) is different from true [2019-12-08 15:55:36,619 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (= (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_fmod_double_~x (fp.neg (_ +zero 11 53))))) (fp.div roundNearestTiesToEven .cse0 .cse0)) |c_ULTIMATE.start_fmod_double_#res|)) (= (_ bv1 32) |c_ULTIMATE.start_isnan_double_#res|)) is different from false [2019-12-08 15:55:37,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:55:37,152 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2019-12-08 15:55:37,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-08 15:55:37,191 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2019-12-08 15:55:37,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:55:37,193 INFO L225 Difference]: With dead ends: 57 [2019-12-08 15:55:37,193 INFO L226 Difference]: Without dead ends: 52 [2019-12-08 15:55:37,195 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 39.1s TimeCoverageRelationStatistics Valid=27, Invalid=71, Unknown=4, NotChecked=54, Total=156 [2019-12-08 15:55:37,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-12-08 15:55:37,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-12-08 15:55:37,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-08 15:55:37,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2019-12-08 15:55:37,204 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 12 [2019-12-08 15:55:37,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:55:37,204 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2019-12-08 15:55:37,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-08 15:55:37,205 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2019-12-08 15:55:37,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-08 15:55:37,208 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:55:37,208 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:55:37,422 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-08 15:55:37,422 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:55:37,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:55:37,424 INFO L82 PathProgramCache]: Analyzing trace with hash -910533226, now seen corresponding path program 1 times [2019-12-08 15:55:37,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:55:37,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797135748] [2019-12-08 15:55:37,426 INFO L94 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 [2019-12-08 15:55:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:55:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:55:37,839 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-08 15:55:37,839 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:55:38,040 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-08 15:55:38,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:55:38 BoogieIcfgContainer [2019-12-08 15:55:38,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:55:38,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:55:38,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:55:38,088 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:55:38,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:51" (3/4) ... [2019-12-08 15:55:38,091 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-08 15:55:38,147 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-12-08 15:55:38,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:55:38,149 INFO L168 Benchmark]: Toolchain (without parser) took 51326.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 956.3 MB in the beginning and 993.3 MB in the end (delta: -36.9 MB). Peak memory consumption was 103.0 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:38,150 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:55:38,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 492.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -174.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:38,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:38,152 INFO L168 Benchmark]: Boogie Preprocessor took 65.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:55:38,153 INFO L168 Benchmark]: RCFGBuilder took 3820.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:38,154 INFO L168 Benchmark]: TraceAbstraction took 46824.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 993.3 MB in the end (delta: 92.2 MB). Peak memory consumption was 92.2 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:38,154 INFO L168 Benchmark]: Witness Printer took 59.41 ms. Allocated memory is still 1.2 GB. Free memory is still 993.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:55:38,158 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 492.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -174.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 65.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 3820.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 46824.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 993.3 MB in the end (delta: 92.2 MB). Peak memory consumption was 92.2 MB. Max. memory is 11.5 GB. * Witness Printer took 59.41 ms. Allocated memory is still 1.2 GB. Free memory is still 993.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 175]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L169] double x = __VERIFIER_nondet_double(); [L170] double y = -0.0; [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L43-L44] COND FALSE !((hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000)) VAL [one_fmod=1.0, Zero_fmod={2:0}] [L46] COND TRUE hx <= hy VAL [one_fmod=1.0, Zero_fmod={2:0}] [L47] COND TRUE (hx < hy) || (lx < ly) [L48] return x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L171] double res = fmod_double(x, y); [L16] return x != x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L174] COND TRUE !isnan_double(res) [L175] __VERIFIER_error() VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Result: UNSAFE, OverallTime: 46.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 156 SDtfs, 3 SDslu, 336 SDs, 0 SdLazy, 19 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 39.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 34.8s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 7 QuantifiedInterpolants, 2637 SizeOfPredicates, 11 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 12 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...