./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ef877ce38bde19caca23c0b110041aea30d9b13 ................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ef877ce38bde19caca23c0b110041aea30d9b13 ............................................................................................................................................................................................................................................................................................................... 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 0.1.25-9a8b2e8 [2020-10-20 00:32:45,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:32:45,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:32:45,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:32:45,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:32:45,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:32:45,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:32:45,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:32:45,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:32:45,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:32:45,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:32:45,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:32:45,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:32:45,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:32:45,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:32:45,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:32:45,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:32:45,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:32:45,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:32:45,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:32:45,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:32:45,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:32:45,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:32:45,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:32:45,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:32:45,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:32:45,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:32:45,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:32:45,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:32:45,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:32:45,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:32:45,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:32:45,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:32:45,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:32:45,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:32:45,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:32:45,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:32:45,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:32:45,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:32:45,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:32:45,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:32:45,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:32:45,556 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:32:45,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:32:45,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:32:45,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:32:45,558 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:32:45,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:32:45,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:32:45,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:32:45,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:32:45,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:32:45,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:32:45,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:32:45,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:32:45,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:32:45,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:32:45,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:32:45,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:32:45,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:32:45,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:32:45,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:32:45,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:32:45,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:45,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:32:45,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:32:45,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:32:45,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:32:45,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:32:45,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:32:45,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:32:45,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ef877ce38bde19caca23c0b110041aea30d9b13 [2020-10-20 00:32:45,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:32:45,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:32:45,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:32:45,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:32:45,781 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:32:45,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-10-20 00:32:45,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0080bea3f/84647bf6ac484477b9b817948a1394b0/FLAGc9fe4c938 [2020-10-20 00:32:46,299 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:32:46,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-10-20 00:32:46,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0080bea3f/84647bf6ac484477b9b817948a1394b0/FLAGc9fe4c938 [2020-10-20 00:32:46,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0080bea3f/84647bf6ac484477b9b817948a1394b0 [2020-10-20 00:32:46,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:32:46,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:32:46,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:46,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:32:46,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:32:46,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:46,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f3da21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46, skipping insertion in model container [2020-10-20 00:32:46,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:46,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:32:46,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:32:46,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:46,921 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:32:46,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:46,980 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:32:46,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46 WrapperNode [2020-10-20 00:32:46,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:46,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:46,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:32:46,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:32:46,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:46,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:47,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:47,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:32:47,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:32:47,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:32:47,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:47,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:47,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:47,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:47,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:47,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:47,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... [2020-10-20 00:32:47,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:32:47,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:32:47,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:32:47,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:32:47,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:32:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:32:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:32:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:32:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:32:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:32:47,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:32:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:32:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:32:47,557 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:32:47,557 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 00:32:47,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:47 BoogieIcfgContainer [2020-10-20 00:32:47,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:32:47,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:32:47,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:32:47,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:32:47,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:32:46" (1/3) ... [2020-10-20 00:32:47,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e144280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:47, skipping insertion in model container [2020-10-20 00:32:47,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:46" (2/3) ... [2020-10-20 00:32:47,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e144280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:47, skipping insertion in model container [2020-10-20 00:32:47,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:47" (3/3) ... [2020-10-20 00:32:47,577 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2020-10-20 00:32:47,587 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:32:47,594 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:32:47,606 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:32:47,625 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:32:47,626 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:32:47,626 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:32:47,626 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:32:47,626 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:32:47,626 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:32:47,626 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:32:47,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:32:47,640 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-20 00:32:47,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:32:47,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:47,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:47,647 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:47,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:47,652 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-10-20 00:32:47,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:32:47,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868893930] [2020-10-20 00:32:47,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:32:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:47,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868893930] [2020-10-20 00:32:47,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:47,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:32:47,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864931166] [2020-10-20 00:32:47,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:32:47,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:32:47,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:32:47,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:47,817 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-10-20 00:32:47,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:47,840 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-10-20 00:32:47,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:32:47,842 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-20 00:32:47,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:47,853 INFO L225 Difference]: With dead ends: 53 [2020-10-20 00:32:47,853 INFO L226 Difference]: Without dead ends: 24 [2020-10-20 00:32:47,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:47,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-20 00:32:47,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-20 00:32:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 00:32:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-20 00:32:47,899 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-10-20 00:32:47,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:47,900 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-20 00:32:47,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:32:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-20 00:32:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:32:47,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:47,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:47,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:32:47,912 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:47,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:47,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-10-20 00:32:47,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:32:47,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64694757] [2020-10-20 00:32:47,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:32:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:48,122 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:48,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:48,209 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:32:48,209 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:32:48,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:32:48,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:32:48 BoogieIcfgContainer [2020-10-20 00:32:48,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:32:48,247 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:32:48,247 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:32:48,248 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:32:48,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:47" (3/4) ... [2020-10-20 00:32:48,252 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:32:48,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:32:48,255 INFO L168 Benchmark]: Toolchain (without parser) took 1634.33 ms. Allocated memory was 34.1 MB in the beginning and 47.2 MB in the end (delta: 13.1 MB). Free memory was 7.1 MB in the beginning and 12.4 MB in the end (delta: -5.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:48,256 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 34.1 MB. Free memory was 12.5 MB in the beginning and 12.4 MB in the end (delta: 68.3 kB). Peak memory consumption was 68.3 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:48,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.83 ms. Allocated memory was 36.7 MB in the beginning and 44.0 MB in the end (delta: 7.3 MB). Free memory was 19.4 MB in the beginning and 24.7 MB in the end (delta: -5.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:48,258 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.52 ms. Allocated memory is still 44.0 MB. Free memory was 24.7 MB in the beginning and 22.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:48,259 INFO L168 Benchmark]: Boogie Preprocessor took 40.75 ms. Allocated memory is still 44.0 MB. Free memory was 22.5 MB in the beginning and 20.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:48,260 INFO L168 Benchmark]: RCFGBuilder took 486.04 ms. Allocated memory was 44.0 MB in the beginning and 46.7 MB in the end (delta: 2.6 MB). Free memory was 20.6 MB in the beginning and 11.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:48,261 INFO L168 Benchmark]: TraceAbstraction took 686.74 ms. Allocated memory was 46.7 MB in the beginning and 47.2 MB in the end (delta: 524.3 kB). Free memory was 11.0 MB in the beginning and 12.7 MB in the end (delta: -1.7 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:32:48,262 INFO L168 Benchmark]: Witness Printer took 5.15 ms. Allocated memory is still 47.2 MB. Free memory was 12.7 MB in the beginning and 12.4 MB in the end (delta: 328.6 kB). Peak memory consumption was 328.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:48,267 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 34.1 MB. Free memory was 12.5 MB in the beginning and 12.4 MB in the end (delta: 68.3 kB). Peak memory consumption was 68.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 345.83 ms. Allocated memory was 36.7 MB in the beginning and 44.0 MB in the end (delta: 7.3 MB). Free memory was 19.4 MB in the beginning and 24.7 MB in the end (delta: -5.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 48.52 ms. Allocated memory is still 44.0 MB. Free memory was 24.7 MB in the beginning and 22.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 40.75 ms. Allocated memory is still 44.0 MB. Free memory was 22.5 MB in the beginning and 20.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 486.04 ms. Allocated memory was 44.0 MB in the beginning and 46.7 MB in the end (delta: 2.6 MB). Free memory was 20.6 MB in the beginning and 11.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 686.74 ms. Allocated memory was 46.7 MB in the beginning and 47.2 MB in the end (delta: 524.3 kB). Free memory was 11.0 MB in the beginning and 12.7 MB in the end (delta: -1.7 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 5.15 ms. Allocated memory is still 47.2 MB. Free memory was 12.7 MB in the beginning and 12.4 MB in the end (delta: 328.6 kB). Peak memory consumption was 328.6 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = 1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:32:50,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:32:50,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:32:50,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:32:50,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:32:50,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:32:50,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:32:50,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:32:50,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:32:50,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:32:50,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:32:50,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:32:50,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:32:50,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:32:50,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:32:50,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:32:50,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:32:50,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:32:50,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:32:50,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:32:50,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:32:50,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:32:50,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:32:50,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:32:50,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:32:50,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:32:50,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:32:50,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:32:50,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:32:50,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:32:50,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:32:50,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:32:50,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:32:50,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:32:50,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:32:50,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:32:50,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:32:50,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:32:50,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:32:50,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:32:50,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:32:50,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:32:50,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:32:50,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:32:50,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:32:50,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:32:50,476 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:32:50,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:32:50,477 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:32:50,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:32:50,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:32:50,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:32:50,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:32:50,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:32:50,478 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:32:50,478 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:32:50,478 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:32:50,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:32:50,479 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:32:50,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:32:50,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:32:50,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:32:50,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:32:50,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:32:50,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:50,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:32:50,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:32:50,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:32:50,481 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:32:50,481 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:32:50,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:32:50,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:32:50,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:32:50,482 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ef877ce38bde19caca23c0b110041aea30d9b13 [2020-10-20 00:32:50,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:32:50,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:32:50,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:32:50,753 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:32:50,754 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:32:50,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-10-20 00:32:50,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6a29a21/6e564402219e43cc9a6ae74321a4308f/FLAG631d6fd9a [2020-10-20 00:32:51,336 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:32:51,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-10-20 00:32:51,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6a29a21/6e564402219e43cc9a6ae74321a4308f/FLAG631d6fd9a [2020-10-20 00:32:51,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6a29a21/6e564402219e43cc9a6ae74321a4308f [2020-10-20 00:32:51,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:32:51,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:32:51,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:51,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:32:51,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:32:51,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:51" (1/1) ... [2020-10-20 00:32:51,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15cbe283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:51, skipping insertion in model container [2020-10-20 00:32:51,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:51" (1/1) ... [2020-10-20 00:32:51,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:32:51,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:32:51,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:51,946 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:32:51,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:52,004 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:32:52,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:52 WrapperNode [2020-10-20 00:32:52,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:52,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:52,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:32:52,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:32:52,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:52" (1/1) ... [2020-10-20 00:32:52,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:52" (1/1) ... [2020-10-20 00:32:52,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:52,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:32:52,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:32:52,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:32:52,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:52" (1/1) ... [2020-10-20 00:32:52,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:52" (1/1) ... [2020-10-20 00:32:52,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:52" (1/1) ... [2020-10-20 00:32:52,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:52" (1/1) ... [2020-10-20 00:32:52,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:52" (1/1) ... [2020-10-20 00:32:52,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:52" (1/1) ... [2020-10-20 00:32:52,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:52" (1/1) ... [2020-10-20 00:32:52,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:32:52,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:32:52,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:32:52,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:32:52,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:32:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:32:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:32:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:32:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:32:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:32:52,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:32:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:32:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:32:52,692 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:32:52,692 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-20 00:32:52,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:52 BoogieIcfgContainer [2020-10-20 00:32:52,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:32:52,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:32:52,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:32:52,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:32:52,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:32:51" (1/3) ... [2020-10-20 00:32:52,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4e557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:52, skipping insertion in model container [2020-10-20 00:32:52,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:52" (2/3) ... [2020-10-20 00:32:52,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4e557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:52, skipping insertion in model container [2020-10-20 00:32:52,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:52" (3/3) ... [2020-10-20 00:32:52,703 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2020-10-20 00:32:52,714 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:32:52,720 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:32:52,732 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:32:52,757 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:32:52,758 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:32:52,758 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:32:52,758 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:32:52,758 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:32:52,759 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:32:52,759 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:32:52,759 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:32:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-20 00:32:52,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:32:52,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:52,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:52,793 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:52,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:52,799 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-10-20 00:32:52,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:52,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243552244] [2020-10-20 00:32:52,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 00:32:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:53,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:32:53,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:32:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:53,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:32:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:53,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243552244] [2020-10-20 00:32:53,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:53,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:32:53,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562327195] [2020-10-20 00:32:53,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:32:53,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:32:53,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:32:53,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:53,054 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-10-20 00:32:53,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:53,074 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-10-20 00:32:53,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:32:53,075 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-20 00:32:53,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:53,086 INFO L225 Difference]: With dead ends: 53 [2020-10-20 00:32:53,086 INFO L226 Difference]: Without dead ends: 24 [2020-10-20 00:32:53,089 INFO L677 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 [2020-10-20 00:32:53,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-20 00:32:53,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-20 00:32:53,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 00:32:53,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-20 00:32:53,136 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-10-20 00:32:53,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:53,136 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-20 00:32:53,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:32:53,137 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-20 00:32:53,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:32:53,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:53,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:53,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:32:53,351 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:53,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:53,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-10-20 00:32:53,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:53,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952575352] [2020-10-20 00:32:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 00:32:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:53,585 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:53,799 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:53,855 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:32:53,855 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:32:54,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:32:54,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:32:54 BoogieIcfgContainer [2020-10-20 00:32:54,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:32:54,093 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:32:54,093 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:32:54,093 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:32:54,094 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:52" (3/4) ... [2020-10-20 00:32:54,096 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:32:54,150 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:32:54,151 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:32:54,153 INFO L168 Benchmark]: Toolchain (without parser) took 2466.34 ms. Allocated memory was 40.4 MB in the beginning and 47.2 MB in the end (delta: 6.8 MB). Free memory was 16.7 MB in the beginning and 20.7 MB in the end (delta: -3.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:54,154 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 30.4 MB. Free memory was 16.1 MB in the beginning and 16.1 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:54,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.34 ms. Allocated memory was 40.4 MB in the beginning and 40.9 MB in the end (delta: 524.3 kB). Free memory was 15.9 MB in the beginning and 12.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 7.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:54,155 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.32 ms. Allocated memory is still 40.9 MB. Free memory was 12.0 MB in the beginning and 9.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:54,156 INFO L168 Benchmark]: Boogie Preprocessor took 74.18 ms. Allocated memory was 40.9 MB in the beginning and 42.5 MB in the end (delta: 1.6 MB). Free memory was 9.9 MB in the beginning and 23.4 MB in the end (delta: -13.5 MB). Peak memory consumption was 547.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:54,157 INFO L168 Benchmark]: RCFGBuilder took 568.47 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 23.4 MB in the beginning and 15.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:54,157 INFO L168 Benchmark]: TraceAbstraction took 1396.75 ms. Allocated memory was 43.0 MB in the beginning and 47.2 MB in the end (delta: 4.2 MB). Free memory was 14.6 MB in the beginning and 23.7 MB in the end (delta: -9.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:54,158 INFO L168 Benchmark]: Witness Printer took 58.12 ms. Allocated memory is still 47.2 MB. Free memory was 23.7 MB in the beginning and 20.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:54,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 30.4 MB. Free memory was 16.1 MB in the beginning and 16.1 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 313.34 ms. Allocated memory was 40.4 MB in the beginning and 40.9 MB in the end (delta: 524.3 kB). Free memory was 15.9 MB in the beginning and 12.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 7.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 45.32 ms. Allocated memory is still 40.9 MB. Free memory was 12.0 MB in the beginning and 9.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 74.18 ms. Allocated memory was 40.9 MB in the beginning and 42.5 MB in the end (delta: 1.6 MB). Free memory was 9.9 MB in the beginning and 23.4 MB in the end (delta: -13.5 MB). Peak memory consumption was 547.2 kB. Max. memory is 14.3 GB. * RCFGBuilder took 568.47 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 23.4 MB in the beginning and 15.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1396.75 ms. Allocated memory was 43.0 MB in the beginning and 47.2 MB in the end (delta: 4.2 MB). Free memory was 14.6 MB in the beginning and 23.7 MB in the end (delta: -9.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. * Witness Printer took 58.12 ms. Allocated memory is still 47.2 MB. Free memory was 23.7 MB in the beginning and 20.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L86] double x = 1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, 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=28occurred 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, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 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...