./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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_1072a.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 6677b5df0de82d6f15e79744b3d0d69c2e6d1112 .......................................................................................................................................................................................................................................................................................................................................... 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 -ea -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_1072a.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 6677b5df0de82d6f15e79744b3d0d69c2e6d1112 ................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-8bd4bc6 [2020-07-28 17:42:36,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:42:36,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:42:36,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:42:36,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:42:36,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:42:36,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:42:36,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:42:36,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:42:36,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:42:36,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:42:36,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:42:36,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:42:36,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:42:36,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:42:36,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:42:36,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:42:36,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:42:36,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:42:36,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:42:36,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:42:36,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:42:36,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:42:36,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:42:36,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:42:36,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:42:36,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:42:36,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:42:36,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:42:36,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:42:36,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:42:36,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:42:36,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:42:36,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:42:36,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:42:36,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:42:36,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:42:36,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:42:36,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:42:36,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:42:36,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:42:36,634 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:42:36,649 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:42:36,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:42:36,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:42:36,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:42:36,651 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:42:36,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:42:36,652 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:42:36,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:42:36,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:42:36,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:42:36,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:42:36,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:42:36,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:42:36,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:42:36,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:42:36,655 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:42:36,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:42:36,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:42:36,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:42:36,656 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:42:36,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:42:36,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:42:36,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:42:36,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:42:36,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:42:36,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:42:36,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:42:36,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:42:36,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:42:36,659 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 -> 6677b5df0de82d6f15e79744b3d0d69c2e6d1112 [2020-07-28 17:42:36,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:42:36,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:42:36,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:42:36,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:42:36,982 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:42:36,983 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-07-28 17:42:37,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86fcefc65/e05ff2ec58784ce584b4d11d595c1b64/FLAG7ce8f9457 [2020-07-28 17:42:37,552 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:42:37,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-07-28 17:42:37,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86fcefc65/e05ff2ec58784ce584b4d11d595c1b64/FLAG7ce8f9457 [2020-07-28 17:42:37,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86fcefc65/e05ff2ec58784ce584b4d11d595c1b64 [2020-07-28 17:42:37,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:42:37,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:42:37,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:42:37,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:42:37,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:42:37,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:42:37" (1/1) ... [2020-07-28 17:42:37,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26af0012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:37, skipping insertion in model container [2020-07-28 17:42:37,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:42:37" (1/1) ... [2020-07-28 17:42:37,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:42:37,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:42:38,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:42:38,153 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:42:38,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:42:38,278 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:42:38,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:38 WrapperNode [2020-07-28 17:42:38,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:42:38,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:42:38,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:42:38,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:42:38,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:38" (1/1) ... [2020-07-28 17:42:38,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:38" (1/1) ... [2020-07-28 17:42:38,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:42:38,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:42:38,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:42:38,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:42:38,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:38" (1/1) ... [2020-07-28 17:42:38,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:38" (1/1) ... [2020-07-28 17:42:38,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:38" (1/1) ... [2020-07-28 17:42:38,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:38" (1/1) ... [2020-07-28 17:42:38,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:38" (1/1) ... [2020-07-28 17:42:38,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:38" (1/1) ... [2020-07-28 17:42:38,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:38" (1/1) ... [2020-07-28 17:42:38,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:42:38,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:42:38,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:42:38,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:42:38,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:38" (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 [2020-07-28 17:42:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:42:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-28 17:42:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 17:42:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-28 17:42:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:42:38,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:42:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 17:42:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:42:39,008 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:42:39,008 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-07-28 17:42:39,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:42:39 BoogieIcfgContainer [2020-07-28 17:42:39,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:42:39,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:42:39,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:42:39,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:42:39,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:42:37" (1/3) ... [2020-07-28 17:42:39,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b55cf6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:42:39, skipping insertion in model container [2020-07-28 17:42:39,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:38" (2/3) ... [2020-07-28 17:42:39,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b55cf6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:42:39, skipping insertion in model container [2020-07-28 17:42:39,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:42:39" (3/3) ... [2020-07-28 17:42:39,025 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2020-07-28 17:42:39,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:42:39,043 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:42:39,054 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:42:39,076 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:42:39,076 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:42:39,076 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:42:39,076 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:42:39,077 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:42:39,077 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:42:39,077 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:42:39,080 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:42:39,097 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-28 17:42:39,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-28 17:42:39,104 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:42:39,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:42:39,106 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:42:39,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:42:39,112 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-07-28 17:42:39,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:42:39,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598494012] [2020-07-28 17:42:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:42:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:42:39,260 INFO L280 TraceCheckUtils]: 0: Hoare triple {30#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {30#true} is VALID [2020-07-28 17:42:39,261 INFO L280 TraceCheckUtils]: 1: Hoare triple {30#true} havoc main_#res;havoc main_#t~ret14, main_#t~ret15, main_~x~0, main_~res~0;main_~x~0 := ~someBinaryArithmeticDOUBLEoperation(1.0, 0.0);trunc_double_#in~x := main_~x~0;havoc trunc_double_#res;havoc trunc_double_#t~mem0, trunc_double_#t~union1, trunc_double_#t~mem2, trunc_double_#t~union3, trunc_double_~#ew_u~0.base, trunc_double_~#ew_u~0.offset, trunc_double_#t~mem4, trunc_double_#t~union5.lsw, trunc_double_#t~union5.msw, trunc_double_~#iw_u~0.base, trunc_double_~#iw_u~0.offset, trunc_double_#t~mem6, trunc_double_#t~union7.lsw, trunc_double_#t~union7.msw, trunc_double_~#iw_u~1.base, trunc_double_~#iw_u~1.offset, trunc_double_#t~mem8, trunc_double_#t~union9.lsw, trunc_double_#t~union9.msw, trunc_double_~#iw_u~2.base, trunc_double_~#iw_u~2.offset, trunc_double_~x, trunc_double_~signbit~0, trunc_double_~msw~0, trunc_double_~lsw~0, trunc_double_~exponent_less_1023~0;trunc_double_~x := trunc_double_#in~x;havoc trunc_double_~signbit~0;havoc trunc_double_~msw~0;havoc trunc_double_~lsw~0;havoc trunc_double_~exponent_less_1023~0; {30#true} is VALID [2020-07-28 17:42:39,263 INFO L280 TraceCheckUtils]: 2: Hoare triple {30#true} assume !true; {31#false} is VALID [2020-07-28 17:42:39,263 INFO L280 TraceCheckUtils]: 3: Hoare triple {31#false} trunc_double_~signbit~0 := (if ~bitwiseAnd(trunc_double_~msw~0, 2147483648) % 4294967296 % 4294967296 <= 2147483647 then ~bitwiseAnd(trunc_double_~msw~0, 2147483648) % 4294967296 % 4294967296 else ~bitwiseAnd(trunc_double_~msw~0, 2147483648) % 4294967296 % 4294967296 - 4294967296);trunc_double_~exponent_less_1023~0 := ~bitwiseAnd(trunc_double_~msw~0, 2146435072) / 1048576 - 1023; {31#false} is VALID [2020-07-28 17:42:39,264 INFO L280 TraceCheckUtils]: 4: Hoare triple {31#false} assume !(trunc_double_~exponent_less_1023~0 < 20); {31#false} is VALID [2020-07-28 17:42:39,264 INFO L280 TraceCheckUtils]: 5: Hoare triple {31#false} assume trunc_double_~exponent_less_1023~0 > 51; {31#false} is VALID [2020-07-28 17:42:39,265 INFO L280 TraceCheckUtils]: 6: Hoare triple {31#false} assume 1024 == trunc_double_~exponent_less_1023~0;trunc_double_#res := ~someBinaryArithmeticDOUBLEoperation(trunc_double_~x, trunc_double_~x); {31#false} is VALID [2020-07-28 17:42:39,265 INFO L280 TraceCheckUtils]: 7: Hoare triple {31#false} main_#t~ret14 := trunc_double_#res;main_~res~0 := main_#t~ret14;havoc main_#t~ret14;isinf_double_#in~x := main_~res~0;havoc isinf_double_#res;havoc isinf_double_#t~mem10, isinf_double_#t~union11, isinf_double_#t~mem12, isinf_double_#t~union13, isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, isinf_double_~x, isinf_double_~hx~0, isinf_double_~lx~0;isinf_double_~x := isinf_double_#in~x;havoc isinf_double_~hx~0;havoc isinf_double_~lx~0; {31#false} is VALID [2020-07-28 17:42:39,266 INFO L280 TraceCheckUtils]: 8: Hoare triple {31#false} assume !true; {31#false} is VALID [2020-07-28 17:42:39,266 INFO L280 TraceCheckUtils]: 9: Hoare triple {31#false} isinf_double_~hx~0 := ~bitwiseAnd(isinf_double_~hx~0, 2147483647);isinf_double_~hx~0 := (if ~bitwiseOr(isinf_double_~hx~0, ~bitwiseOr(isinf_double_~lx~0, -isinf_double_~lx~0) / 2147483648) % 4294967296 % 4294967296 <= 2147483647 then ~bitwiseOr(isinf_double_~hx~0, ~bitwiseOr(isinf_double_~lx~0, -isinf_double_~lx~0) / 2147483648) % 4294967296 % 4294967296 else ~bitwiseOr(isinf_double_~hx~0, ~bitwiseOr(isinf_double_~lx~0, -isinf_double_~lx~0) / 2147483648) % 4294967296 % 4294967296 - 4294967296);isinf_double_~hx~0 := 2146435072 - isinf_double_~hx~0;isinf_double_#res := 1 - (if ~bitwiseOr(isinf_double_~hx~0, -isinf_double_~hx~0) / 2147483648 % 4294967296 % 4294967296 <= 2147483647 then ~bitwiseOr(isinf_double_~hx~0, -isinf_double_~hx~0) / 2147483648 % 4294967296 % 4294967296 else ~bitwiseOr(isinf_double_~hx~0, -isinf_double_~hx~0) / 2147483648 % 4294967296 % 4294967296 - 4294967296); {31#false} is VALID [2020-07-28 17:42:39,266 INFO L280 TraceCheckUtils]: 10: Hoare triple {31#false} main_#t~ret15 := isinf_double_#res;assume -2147483648 <= main_#t~ret15 && main_#t~ret15 <= 2147483647; {31#false} is VALID [2020-07-28 17:42:39,267 INFO L280 TraceCheckUtils]: 11: Hoare triple {31#false} assume 0 == main_#t~ret15;havoc main_#t~ret15; {31#false} is VALID [2020-07-28 17:42:39,267 INFO L280 TraceCheckUtils]: 12: Hoare triple {31#false} assume !false; {31#false} is VALID [2020-07-28 17:42:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:42:39,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598494012] [2020-07-28 17:42:39,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:42:39,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 17:42:39,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666092905] [2020-07-28 17:42:39,279 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-28 17:42:39,281 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:42:39,285 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:42:39,315 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:42:39,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:42:39,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:42:39,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:42:39,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:42:39,332 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-07-28 17:42:39,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:42:39,428 INFO L93 Difference]: Finished difference Result 52 states and 80 transitions. [2020-07-28 17:42:39,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:42:39,428 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-28 17:42:39,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:42:39,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:42:39,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2020-07-28 17:42:39,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:42:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2020-07-28 17:42:39,451 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 80 transitions. [2020-07-28 17:42:39,583 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 80 edges. 80 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:42:39,596 INFO L225 Difference]: With dead ends: 52 [2020-07-28 17:42:39,596 INFO L226 Difference]: Without dead ends: 24 [2020-07-28 17:42:39,600 INFO L675 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 [2020-07-28 17:42:39,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-28 17:42:39,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-28 17:42:39,642 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:42:39,643 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand 24 states. [2020-07-28 17:42:39,643 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 24 states. [2020-07-28 17:42:39,644 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 24 states. [2020-07-28 17:42:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:42:39,647 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-07-28 17:42:39,648 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-07-28 17:42:39,648 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:42:39,648 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:42:39,649 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 24 states. [2020-07-28 17:42:39,649 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 24 states. [2020-07-28 17:42:39,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:42:39,652 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-07-28 17:42:39,652 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-07-28 17:42:39,653 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:42:39,653 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:42:39,653 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:42:39,654 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:42:39,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-28 17:42:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-07-28 17:42:39,658 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-07-28 17:42:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:42:39,659 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-07-28 17:42:39,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:42:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-07-28 17:42:39,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-28 17:42:39,660 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:42:39,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:42:39,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:42:39,661 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:42:39,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:42:39,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-07-28 17:42:39,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:42:39,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116845983] [2020-07-28 17:42:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:42:39,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:42:39,829 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.TableauxRow.(TableauxRow.java:45) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.LinArSolve.generateLinVar(LinArSolve.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.LinArSolve.createEquality(LinArSolve.java:1974) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.createLAEquality(EqualityProxy.java:83) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.createAtom(EqualityProxy.java:165) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.getLiteral(EqualityProxy.java:186) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.createCCEquality(EqualityProxy.java:109) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.LinArSolve.mbtc(LinArSolve.java:1891) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.LinArSolve.computeConflictClause(LinArSolve.java:664) at de.uni_freiburg.informatik.ultimate.smtinterpol.dpll.DPLLEngine.checkConsistency(DPLLEngine.java:1010) at de.uni_freiburg.informatik.ultimate.smtinterpol.dpll.DPLLEngine.solve(DPLLEngine.java:1157) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol$CheckType$1.check(SMTInterpol.java:117) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.checkSatAssuming(SMTInterpol.java:494) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.checkSat(SMTInterpol.java:446) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:295) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:206) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-28 17:42:39,835 INFO L168 Benchmark]: Toolchain (without parser) took 1927.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 960.2 MB in the beginning and 1.0 GB in the end (delta: -71.5 MB). Peak memory consumption was 70.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:39,836 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:42:39,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -171.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:39,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.77 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. [2020-07-28 17:42:39,839 INFO L168 Benchmark]: Boogie Preprocessor took 48.60 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. [2020-07-28 17:42:39,839 INFO L168 Benchmark]: RCFGBuilder took 618.47 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: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:39,840 INFO L168 Benchmark]: TraceAbstraction took 818.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:39,845 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 368.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -171.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 64.77 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 48.60 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 618.47 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: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 818.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.TableauxRow.(TableauxRow.java:45) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:42:41,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:42:41,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:42:41,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:42:41,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:42:41,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:42:41,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:42:41,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:42:41,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:42:41,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:42:41,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:42:41,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:42:41,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:42:41,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:42:41,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:42:41,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:42:41,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:42:41,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:42:41,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:42:41,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:42:41,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:42:41,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:42:41,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:42:41,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:42:41,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:42:41,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:42:41,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:42:41,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:42:41,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:42:41,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:42:41,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:42:41,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:42:42,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:42:42,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:42:42,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:42:42,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:42:42,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:42:42,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:42:42,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:42:42,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:42:42,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:42:42,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:42:42,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:42:42,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:42:42,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:42:42,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:42:42,033 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:42:42,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:42:42,033 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:42:42,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:42:42,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:42:42,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:42:42,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:42:42,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:42:42,035 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:42:42,035 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:42:42,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:42:42,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:42:42,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:42:42,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:42:42,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:42:42,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:42:42,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:42:42,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:42:42,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:42:42,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:42:42,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:42:42,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:42:42,039 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:42:42,039 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:42:42,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:42:42,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:42:42,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:42:42,040 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 -> 6677b5df0de82d6f15e79744b3d0d69c2e6d1112 [2020-07-28 17:42:42,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:42:42,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:42:42,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:42:42,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:42:42,400 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:42:42,401 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-07-28 17:42:42,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f55bf0fea/24b4f35cd75440988b55bd9a6e784de3/FLAG850064432 [2020-07-28 17:42:42,922 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:42:42,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-07-28 17:42:42,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f55bf0fea/24b4f35cd75440988b55bd9a6e784de3/FLAG850064432 [2020-07-28 17:42:43,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f55bf0fea/24b4f35cd75440988b55bd9a6e784de3 [2020-07-28 17:42:43,258 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:42:43,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:42:43,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:42:43,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:42:43,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:42:43,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:42:43" (1/1) ... [2020-07-28 17:42:43,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@659c5cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:43, skipping insertion in model container [2020-07-28 17:42:43,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:42:43" (1/1) ... [2020-07-28 17:42:43,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:42:43,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:42:43,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:42:43,515 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:42:43,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:42:43,702 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:42:43,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:43 WrapperNode [2020-07-28 17:42:43,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:42:43,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:42:43,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:42:43,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:42:43,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:43" (1/1) ... [2020-07-28 17:42:43,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:43" (1/1) ... [2020-07-28 17:42:43,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:42:43,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:42:43,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:42:43,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:42:43,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:43" (1/1) ... [2020-07-28 17:42:43,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:43" (1/1) ... [2020-07-28 17:42:43,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:43" (1/1) ... [2020-07-28 17:42:43,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:43" (1/1) ... [2020-07-28 17:42:43,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:43" (1/1) ... [2020-07-28 17:42:43,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:43" (1/1) ... [2020-07-28 17:42:43,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:43" (1/1) ... [2020-07-28 17:42:43,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:42:43,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:42:43,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:42:43,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:42:43,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:43" (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 [2020-07-28 17:42:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-07-28 17:42:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-07-28 17:42:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:42:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-07-28 17:42:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:42:43,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:42:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-07-28 17:42:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:42:44,548 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:42:44,548 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-07-28 17:42:44,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:42:44 BoogieIcfgContainer [2020-07-28 17:42:44,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:42:44,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:42:44,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:42:44,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:42:44,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:42:43" (1/3) ... [2020-07-28 17:42:44,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b48053c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:42:44, skipping insertion in model container [2020-07-28 17:42:44,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:43" (2/3) ... [2020-07-28 17:42:44,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b48053c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:42:44, skipping insertion in model container [2020-07-28 17:42:44,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:42:44" (3/3) ... [2020-07-28 17:42:44,567 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2020-07-28 17:42:44,580 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:42:44,590 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:42:44,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:42:44,630 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:42:44,631 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:42:44,631 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:42:44,631 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:42:44,632 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:42:44,632 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:42:44,632 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:42:44,633 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:42:44,651 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-28 17:42:44,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-28 17:42:44,658 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:42:44,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:42:44,659 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:42:44,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:42:44,666 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-07-28 17:42:44,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:42:44,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054028093] [2020-07-28 17:42:44,681 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 [2020-07-28 17:42:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:42:44,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-28 17:42:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:42:44,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:42:44,921 INFO L280 TraceCheckUtils]: 0: Hoare triple {30#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {30#true} is VALID [2020-07-28 17:42:44,922 INFO L280 TraceCheckUtils]: 1: Hoare triple {30#true} havoc main_#res;havoc main_#t~ret14, main_#t~ret15, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~DOUBLE(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0), ~Pluszero~DOUBLE());trunc_double_#in~x := main_~x~0;havoc trunc_double_#res;havoc trunc_double_#t~mem0, trunc_double_#t~union1, trunc_double_#t~mem2, trunc_double_#t~union3, trunc_double_~#ew_u~0.base, trunc_double_~#ew_u~0.offset, trunc_double_#t~mem4, trunc_double_#t~union5.lsw, trunc_double_#t~union5.msw, trunc_double_~#iw_u~0.base, trunc_double_~#iw_u~0.offset, trunc_double_#t~mem6, trunc_double_#t~union7.lsw, trunc_double_#t~union7.msw, trunc_double_~#iw_u~1.base, trunc_double_~#iw_u~1.offset, trunc_double_#t~mem8, trunc_double_#t~union9.lsw, trunc_double_#t~union9.msw, trunc_double_~#iw_u~2.base, trunc_double_~#iw_u~2.offset, trunc_double_~x, trunc_double_~signbit~0, trunc_double_~msw~0, trunc_double_~lsw~0, trunc_double_~exponent_less_1023~0;trunc_double_~x := trunc_double_#in~x;havoc trunc_double_~signbit~0;havoc trunc_double_~msw~0;havoc trunc_double_~lsw~0;havoc trunc_double_~exponent_less_1023~0; {30#true} is VALID [2020-07-28 17:42:44,924 INFO L280 TraceCheckUtils]: 2: Hoare triple {30#true} assume !true; {31#false} is VALID [2020-07-28 17:42:44,924 INFO L280 TraceCheckUtils]: 3: Hoare triple {31#false} trunc_double_~signbit~0 := ~bvand32(2147483648bv32, trunc_double_~msw~0);trunc_double_~exponent_less_1023~0 := ~bvsub32(~bvashr32(~bvand32(2146435072bv32, trunc_double_~msw~0), 20bv32), 1023bv32); {31#false} is VALID [2020-07-28 17:42:44,924 INFO L280 TraceCheckUtils]: 4: Hoare triple {31#false} assume !~bvslt32(trunc_double_~exponent_less_1023~0, 20bv32); {31#false} is VALID [2020-07-28 17:42:44,925 INFO L280 TraceCheckUtils]: 5: Hoare triple {31#false} assume ~bvsgt32(trunc_double_~exponent_less_1023~0, 51bv32); {31#false} is VALID [2020-07-28 17:42:44,925 INFO L280 TraceCheckUtils]: 6: Hoare triple {31#false} assume 1024bv32 == trunc_double_~exponent_less_1023~0;trunc_double_#res := ~fp.add~DOUBLE(currentRoundingMode, trunc_double_~x, trunc_double_~x); {31#false} is VALID [2020-07-28 17:42:44,926 INFO L280 TraceCheckUtils]: 7: Hoare triple {31#false} main_#t~ret14 := trunc_double_#res;main_~res~0 := main_#t~ret14;havoc main_#t~ret14;isinf_double_#in~x := main_~res~0;havoc isinf_double_#res;havoc isinf_double_#t~mem10, isinf_double_#t~union11, isinf_double_#t~mem12, isinf_double_#t~union13, isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, isinf_double_~x, isinf_double_~hx~0, isinf_double_~lx~0;isinf_double_~x := isinf_double_#in~x;havoc isinf_double_~hx~0;havoc isinf_double_~lx~0; {31#false} is VALID [2020-07-28 17:42:44,926 INFO L280 TraceCheckUtils]: 8: Hoare triple {31#false} assume !true; {31#false} is VALID [2020-07-28 17:42:44,926 INFO L280 TraceCheckUtils]: 9: Hoare triple {31#false} isinf_double_~hx~0 := ~bvand32(2147483647bv32, isinf_double_~hx~0);isinf_double_~hx~0 := ~bvor32(isinf_double_~hx~0, ~bvlshr32(~bvor32(isinf_double_~lx~0, ~bvneg32(isinf_double_~lx~0)), 31bv32));isinf_double_~hx~0 := ~bvsub32(2146435072bv32, isinf_double_~hx~0);isinf_double_#res := ~bvsub32(1bv32, ~bvlshr32(~bvor32(isinf_double_~hx~0, ~bvneg32(isinf_double_~hx~0)), 31bv32)); {31#false} is VALID [2020-07-28 17:42:44,927 INFO L280 TraceCheckUtils]: 10: Hoare triple {31#false} main_#t~ret15 := isinf_double_#res; {31#false} is VALID [2020-07-28 17:42:44,927 INFO L280 TraceCheckUtils]: 11: Hoare triple {31#false} assume 0bv32 == main_#t~ret15;havoc main_#t~ret15; {31#false} is VALID [2020-07-28 17:42:44,927 INFO L280 TraceCheckUtils]: 12: Hoare triple {31#false} assume !false; {31#false} is VALID [2020-07-28 17:42:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:42:44,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:42:44,961 INFO L280 TraceCheckUtils]: 12: Hoare triple {31#false} assume !false; {31#false} is VALID [2020-07-28 17:42:44,961 INFO L280 TraceCheckUtils]: 11: Hoare triple {31#false} assume 0bv32 == main_#t~ret15;havoc main_#t~ret15; {31#false} is VALID [2020-07-28 17:42:44,961 INFO L280 TraceCheckUtils]: 10: Hoare triple {31#false} main_#t~ret15 := isinf_double_#res; {31#false} is VALID [2020-07-28 17:42:44,962 INFO L280 TraceCheckUtils]: 9: Hoare triple {31#false} isinf_double_~hx~0 := ~bvand32(2147483647bv32, isinf_double_~hx~0);isinf_double_~hx~0 := ~bvor32(isinf_double_~hx~0, ~bvlshr32(~bvor32(isinf_double_~lx~0, ~bvneg32(isinf_double_~lx~0)), 31bv32));isinf_double_~hx~0 := ~bvsub32(2146435072bv32, isinf_double_~hx~0);isinf_double_#res := ~bvsub32(1bv32, ~bvlshr32(~bvor32(isinf_double_~hx~0, ~bvneg32(isinf_double_~hx~0)), 31bv32)); {31#false} is VALID [2020-07-28 17:42:44,962 INFO L280 TraceCheckUtils]: 8: Hoare triple {31#false} assume !true; {31#false} is VALID [2020-07-28 17:42:44,962 INFO L280 TraceCheckUtils]: 7: Hoare triple {31#false} main_#t~ret14 := trunc_double_#res;main_~res~0 := main_#t~ret14;havoc main_#t~ret14;isinf_double_#in~x := main_~res~0;havoc isinf_double_#res;havoc isinf_double_#t~mem10, isinf_double_#t~union11, isinf_double_#t~mem12, isinf_double_#t~union13, isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, isinf_double_~x, isinf_double_~hx~0, isinf_double_~lx~0;isinf_double_~x := isinf_double_#in~x;havoc isinf_double_~hx~0;havoc isinf_double_~lx~0; {31#false} is VALID [2020-07-28 17:42:44,963 INFO L280 TraceCheckUtils]: 6: Hoare triple {31#false} assume 1024bv32 == trunc_double_~exponent_less_1023~0;trunc_double_#res := ~fp.add~DOUBLE(currentRoundingMode, trunc_double_~x, trunc_double_~x); {31#false} is VALID [2020-07-28 17:42:44,963 INFO L280 TraceCheckUtils]: 5: Hoare triple {31#false} assume ~bvsgt32(trunc_double_~exponent_less_1023~0, 51bv32); {31#false} is VALID [2020-07-28 17:42:44,963 INFO L280 TraceCheckUtils]: 4: Hoare triple {31#false} assume !~bvslt32(trunc_double_~exponent_less_1023~0, 20bv32); {31#false} is VALID [2020-07-28 17:42:44,964 INFO L280 TraceCheckUtils]: 3: Hoare triple {31#false} trunc_double_~signbit~0 := ~bvand32(2147483648bv32, trunc_double_~msw~0);trunc_double_~exponent_less_1023~0 := ~bvsub32(~bvashr32(~bvand32(2146435072bv32, trunc_double_~msw~0), 20bv32), 1023bv32); {31#false} is VALID [2020-07-28 17:42:44,964 INFO L280 TraceCheckUtils]: 2: Hoare triple {30#true} assume !true; {31#false} is VALID [2020-07-28 17:42:44,965 INFO L280 TraceCheckUtils]: 1: Hoare triple {30#true} havoc main_#res;havoc main_#t~ret14, main_#t~ret15, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~DOUBLE(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0), ~Pluszero~DOUBLE());trunc_double_#in~x := main_~x~0;havoc trunc_double_#res;havoc trunc_double_#t~mem0, trunc_double_#t~union1, trunc_double_#t~mem2, trunc_double_#t~union3, trunc_double_~#ew_u~0.base, trunc_double_~#ew_u~0.offset, trunc_double_#t~mem4, trunc_double_#t~union5.lsw, trunc_double_#t~union5.msw, trunc_double_~#iw_u~0.base, trunc_double_~#iw_u~0.offset, trunc_double_#t~mem6, trunc_double_#t~union7.lsw, trunc_double_#t~union7.msw, trunc_double_~#iw_u~1.base, trunc_double_~#iw_u~1.offset, trunc_double_#t~mem8, trunc_double_#t~union9.lsw, trunc_double_#t~union9.msw, trunc_double_~#iw_u~2.base, trunc_double_~#iw_u~2.offset, trunc_double_~x, trunc_double_~signbit~0, trunc_double_~msw~0, trunc_double_~lsw~0, trunc_double_~exponent_less_1023~0;trunc_double_~x := trunc_double_#in~x;havoc trunc_double_~signbit~0;havoc trunc_double_~msw~0;havoc trunc_double_~lsw~0;havoc trunc_double_~exponent_less_1023~0; {30#true} is VALID [2020-07-28 17:42:44,965 INFO L280 TraceCheckUtils]: 0: Hoare triple {30#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {30#true} is VALID [2020-07-28 17:42:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:42:44,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054028093] [2020-07-28 17:42:44,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:42:44,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-07-28 17:42:44,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413929264] [2020-07-28 17:42:44,974 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-28 17:42:44,975 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:42:44,979 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:42:45,028 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:42:45,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:42:45,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:42:45,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:42:45,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:42:45,041 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-07-28 17:42:45,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:42:45,221 INFO L93 Difference]: Finished difference Result 52 states and 80 transitions. [2020-07-28 17:42:45,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:42:45,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-28 17:42:45,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:42:45,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:42:45,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2020-07-28 17:42:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:42:45,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2020-07-28 17:42:45,249 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 80 transitions. [2020-07-28 17:42:45,483 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 80 edges. 80 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:42:45,495 INFO L225 Difference]: With dead ends: 52 [2020-07-28 17:42:45,496 INFO L226 Difference]: Without dead ends: 24 [2020-07-28 17:42:45,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:42:45,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-28 17:42:45,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-28 17:42:45,539 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:42:45,539 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand 24 states. [2020-07-28 17:42:45,540 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 24 states. [2020-07-28 17:42:45,540 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 24 states. [2020-07-28 17:42:45,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:42:45,543 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-07-28 17:42:45,544 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-07-28 17:42:45,544 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:42:45,544 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:42:45,545 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 24 states. [2020-07-28 17:42:45,545 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 24 states. [2020-07-28 17:42:45,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:42:45,548 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-07-28 17:42:45,548 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-07-28 17:42:45,548 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:42:45,548 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:42:45,549 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:42:45,549 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:42:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-28 17:42:45,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-07-28 17:42:45,553 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-07-28 17:42:45,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:42:45,553 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-07-28 17:42:45,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:42:45,554 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-07-28 17:42:45,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-28 17:42:45,555 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:42:45,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:42:45,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:42:45,781 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:42:45,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:42:45,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-07-28 17:42:45,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:42:45,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445252185] [2020-07-28 17:42:45,787 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 [2020-07-28 17:42:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:42:46,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:42:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:42:46,192 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:42:46,246 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-07-28 17:42:46,247 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:42:46,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 17:42:46,485 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:42:46,486 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:42:46,486 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-28 17:42:46,486 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-28 17:42:46,486 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-28 17:42:46,486 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-28 17:42:46,486 WARN L170 areAnnotationChecker]: L22-3 has no Hoare annotation [2020-07-28 17:42:46,486 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2020-07-28 17:42:46,487 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2020-07-28 17:42:46,487 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-28 17:42:46,487 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-28 17:42:46,487 WARN L170 areAnnotationChecker]: L47 has no Hoare annotation [2020-07-28 17:42:46,487 WARN L170 areAnnotationChecker]: L47 has no Hoare annotation [2020-07-28 17:42:46,487 WARN L170 areAnnotationChecker]: L32-2 has no Hoare annotation [2020-07-28 17:42:46,487 WARN L170 areAnnotationChecker]: L32-2 has no Hoare annotation [2020-07-28 17:42:46,488 WARN L170 areAnnotationChecker]: L39-2 has no Hoare annotation [2020-07-28 17:42:46,488 WARN L170 areAnnotationChecker]: L39-2 has no Hoare annotation [2020-07-28 17:42:46,488 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2020-07-28 17:42:46,488 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2020-07-28 17:42:46,488 WARN L170 areAnnotationChecker]: L52-2 has no Hoare annotation [2020-07-28 17:42:46,488 WARN L170 areAnnotationChecker]: L52-2 has no Hoare annotation [2020-07-28 17:42:46,488 WARN L170 areAnnotationChecker]: L32-1 has no Hoare annotation [2020-07-28 17:42:46,489 WARN L170 areAnnotationChecker]: L32-1 has no Hoare annotation [2020-07-28 17:42:46,489 WARN L170 areAnnotationChecker]: L52-3 has no Hoare annotation [2020-07-28 17:42:46,489 WARN L170 areAnnotationChecker]: L39-1 has no Hoare annotation [2020-07-28 17:42:46,489 WARN L170 areAnnotationChecker]: L39-1 has no Hoare annotation [2020-07-28 17:42:46,489 WARN L170 areAnnotationChecker]: L59 has no Hoare annotation [2020-07-28 17:42:46,489 WARN L170 areAnnotationChecker]: L52-1 has no Hoare annotation [2020-07-28 17:42:46,489 WARN L170 areAnnotationChecker]: L52-1 has no Hoare annotation [2020-07-28 17:42:46,490 WARN L170 areAnnotationChecker]: L65-2 has no Hoare annotation [2020-07-28 17:42:46,490 WARN L170 areAnnotationChecker]: L65-2 has no Hoare annotation [2020-07-28 17:42:46,490 WARN L170 areAnnotationChecker]: L65-1 has no Hoare annotation [2020-07-28 17:42:46,490 WARN L170 areAnnotationChecker]: L65-1 has no Hoare annotation [2020-07-28 17:42:46,490 WARN L170 areAnnotationChecker]: L65-3 has no Hoare annotation [2020-07-28 17:42:46,490 WARN L170 areAnnotationChecker]: L74 has no Hoare annotation [2020-07-28 17:42:46,490 WARN L170 areAnnotationChecker]: L88 has no Hoare annotation [2020-07-28 17:42:46,490 WARN L170 areAnnotationChecker]: L88 has no Hoare annotation [2020-07-28 17:42:46,491 WARN L170 areAnnotationChecker]: L89 has no Hoare annotation [2020-07-28 17:42:46,491 WARN L170 areAnnotationChecker]: L89 has no Hoare annotation [2020-07-28 17:42:46,491 WARN L170 areAnnotationChecker]: L93 has no Hoare annotation [2020-07-28 17:42:46,491 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:42:46,491 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:42:46,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:42:46 BoogieIcfgContainer [2020-07-28 17:42:46,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:42:46,494 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:42:46,495 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:42:46,495 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:42:46,495 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:42:44" (3/4) ... [2020-07-28 17:42:46,497 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 17:42:46,558 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:42:46,558 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:42:46,561 INFO L168 Benchmark]: Toolchain (without parser) took 3300.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 954.9 MB in the beginning and 1.0 GB in the end (delta: -56.4 MB). Peak memory consumption was 93.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:46,562 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:42:46,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 440.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 954.9 MB in the beginning and 1.1 GB in the end (delta: -184.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:46,563 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.87 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. [2020-07-28 17:42:46,564 INFO L168 Benchmark]: Boogie Preprocessor took 44.85 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. [2020-07-28 17:42:46,565 INFO L168 Benchmark]: RCFGBuilder took 722.74 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: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:46,565 INFO L168 Benchmark]: TraceAbstraction took 1937.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 82.4 MB). Peak memory consumption was 82.4 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:46,566 INFO L168 Benchmark]: Witness Printer took 63.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:46,571 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 440.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 954.9 MB in the beginning and 1.1 GB in the end (delta: -184.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 81.87 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 44.85 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 722.74 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: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1937.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 82.4 MB). Peak memory consumption was 82.4 MB. Max. memory is 11.5 GB. * Witness Printer took 63.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 89]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L84] double x = 1.0 / 0.0; [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L85] double res = trunc_double(x); [L64] __int32_t hx, lx; [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...