./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1072d.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 965a8d1f86759d0c7cab56eb22958b9f714cfb2b ........................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1072d.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 965a8d1f86759d0c7cab56eb22958b9f714cfb2b .................................................................................................................................................................................................................................................................................................................... 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 0.2.0-5485861 [2020-10-25 21:53:19,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:53:19,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:53:19,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:53:19,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:53:19,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:53:19,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:53:19,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:53:19,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:53:19,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:53:19,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:53:19,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:53:19,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:53:19,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:53:19,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:53:19,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:53:19,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:53:19,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:53:19,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:53:19,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:53:19,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:53:19,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:53:19,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:53:19,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:53:19,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:53:19,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:53:19,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:53:19,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:53:19,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:53:19,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:53:19,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:53:19,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:53:19,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:53:19,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:53:19,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:53:19,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:53:19,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:53:19,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:53:19,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:53:19,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:53:19,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:53:19,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:53:19,639 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:53:19,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:53:19,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:53:19,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:53:19,644 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:53:19,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:53:19,645 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:53:19,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:53:19,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:53:19,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:53:19,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:53:19,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:53:19,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:53:19,648 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:53:19,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:53:19,649 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:53:19,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:53:19,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:53:19,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:53:19,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:53:19,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:53:19,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:53:19,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:53:19,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:53:19,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:53:19,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:53:19,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:53:19,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:53:19,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:53:19,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-10-25 21:53:20,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:53:20,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:53:20,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:53:20,149 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:53:20,151 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:53:20,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-10-25 21:53:20,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d83518fa/b840838361bf4a0abd55dc2ec43ed468/FLAG700889b3d [2020-10-25 21:53:20,945 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:53:20,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-10-25 21:53:20,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d83518fa/b840838361bf4a0abd55dc2ec43ed468/FLAG700889b3d [2020-10-25 21:53:21,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d83518fa/b840838361bf4a0abd55dc2ec43ed468 [2020-10-25 21:53:21,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:53:21,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:53:21,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:21,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:53:21,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:53:21,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:21" (1/1) ... [2020-10-25 21:53:21,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4993d735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:21, skipping insertion in model container [2020-10-25 21:53:21,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:21" (1/1) ... [2020-10-25 21:53:21,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:53:21,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:53:21,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:21,513 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:53:21,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:21,574 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:53:21,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:21 WrapperNode [2020-10-25 21:53:21,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:21,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:21,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:53:21,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:53:21,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:21" (1/1) ... [2020-10-25 21:53:21,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:21" (1/1) ... [2020-10-25 21:53:21,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:21,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:53:21,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:53:21,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:53:21,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:21" (1/1) ... [2020-10-25 21:53:21,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:21" (1/1) ... [2020-10-25 21:53:21,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:21" (1/1) ... [2020-10-25 21:53:21,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:21" (1/1) ... [2020-10-25 21:53:21,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:21" (1/1) ... [2020-10-25 21:53:21,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:21" (1/1) ... [2020-10-25 21:53:21,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:21" (1/1) ... [2020-10-25 21:53:21,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:53:21,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:53:21,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:53:21,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:53:21,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:21" (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 [2020-10-25 21:53:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:53:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:53:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-25 21:53:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 21:53:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-25 21:53:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:53:21,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:53:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 21:53:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:53:22,271 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:53:22,272 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-25 21:53:22,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:22 BoogieIcfgContainer [2020-10-25 21:53:22,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:53:22,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:53:22,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:53:22,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:53:22,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:53:21" (1/3) ... [2020-10-25 21:53:22,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54654ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:22, skipping insertion in model container [2020-10-25 21:53:22,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:21" (2/3) ... [2020-10-25 21:53:22,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54654ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:22, skipping insertion in model container [2020-10-25 21:53:22,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:22" (3/3) ... [2020-10-25 21:53:22,283 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-10-25 21:53:22,305 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:53:22,310 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:53:22,324 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:53:22,352 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:53:22,352 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:53:22,352 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:53:22,352 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:53:22,352 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:53:22,352 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:53:22,352 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:53:22,353 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:53:22,367 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-25 21:53:22,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 21:53:22,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:22,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:22,374 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:22,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:22,380 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-10-25 21:53:22,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:22,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940108498] [2020-10-25 21:53:22,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:22,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940108498] [2020-10-25 21:53:22,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:22,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:53:22,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694281972] [2020-10-25 21:53:22,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:53:22,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:53:22,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:53:22,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:53:22,579 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-10-25 21:53:22,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:22,599 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-10-25 21:53:22,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:53:22,601 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-25 21:53:22,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:22,611 INFO L225 Difference]: With dead ends: 53 [2020-10-25 21:53:22,611 INFO L226 Difference]: Without dead ends: 24 [2020-10-25 21:53:22,621 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 [2020-10-25 21:53:22,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-25 21:53:22,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-25 21:53:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-25 21:53:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-25 21:53:22,661 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-10-25 21:53:22,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:22,661 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-25 21:53:22,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:53:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-25 21:53:22,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 21:53:22,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:22,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:22,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:53:22,663 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:22,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:22,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-10-25 21:53:22,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:22,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057417643] [2020-10-25 21:53:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:22,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:22,940 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:22,979 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:53:22,980 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:53:22,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:53:23,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:53:23 BoogieIcfgContainer [2020-10-25 21:53:23,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:53:23,017 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:53:23,017 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:53:23,017 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:53:23,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:22" (3/4) ... [2020-10-25 21:53:23,025 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:53:23,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:53:23,033 INFO L168 Benchmark]: Toolchain (without parser) took 1754.53 ms. Allocated memory was 39.8 MB in the beginning and 58.7 MB in the end (delta: 18.9 MB). Free memory was 17.8 MB in the beginning and 38.9 MB in the end (delta: -21.1 MB). Peak memory consumption was 716.8 kB. Max. memory is 16.1 GB. [2020-10-25 21:53:23,034 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 39.8 MB. Free memory is still 25.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:23,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.51 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 26.2 MB in the beginning and 33.4 MB in the end (delta: -7.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:23,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.90 ms. Allocated memory is still 48.2 MB. Free memory was 33.4 MB in the beginning and 31.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:23,038 INFO L168 Benchmark]: Boogie Preprocessor took 40.34 ms. Allocated memory is still 48.2 MB. Free memory was 31.5 MB in the beginning and 29.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:23,041 INFO L168 Benchmark]: RCFGBuilder took 605.50 ms. Allocated memory is still 48.2 MB. Free memory was 29.9 MB in the beginning and 19.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:23,042 INFO L168 Benchmark]: TraceAbstraction took 740.52 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 19.1 MB in the beginning and 39.2 MB in the end (delta: -20.1 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:23,044 INFO L168 Benchmark]: Witness Printer took 8.17 ms. Allocated memory is still 58.7 MB. Free memory was 39.2 MB in the beginning and 38.9 MB in the end (delta: 312.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:23,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 39.8 MB. Free memory is still 25.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.51 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 26.2 MB in the beginning and 33.4 MB in the end (delta: -7.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.90 ms. Allocated memory is still 48.2 MB. Free memory was 33.4 MB in the beginning and 31.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.34 ms. Allocated memory is still 48.2 MB. Free memory was 31.5 MB in the beginning and 29.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 605.50 ms. Allocated memory is still 48.2 MB. Free memory was 29.9 MB in the beginning and 19.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 740.52 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 19.1 MB in the beginning and 39.2 MB in the end (delta: -20.1 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. * Witness Printer took 8.17 ms. Allocated memory is still 58.7 MB. Free memory was 39.2 MB in the beginning and 38.9 MB in the end (delta: 312.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of 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_1072d.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: 0.6s, 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, 0.1s 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 0.2.0-5485861 [2020-10-25 21:53:25,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:53:25,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:53:25,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:53:25,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:53:25,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:53:25,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:53:25,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:53:25,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:53:25,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:53:25,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:53:25,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:53:25,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:53:25,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:53:25,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:53:25,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:53:25,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:53:25,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:53:25,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:53:25,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:53:25,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:53:25,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:53:25,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:53:25,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:53:25,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:53:25,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:53:25,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:53:25,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:53:25,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:53:25,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:53:25,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:53:25,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:53:25,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:53:25,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:53:25,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:53:25,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:53:25,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:53:25,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:53:25,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:53:25,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:53:25,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:53:25,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:53:25,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:53:25,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:53:25,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:53:25,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:53:25,935 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:53:25,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:53:25,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:53:25,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:53:25,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:53:25,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:53:25,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:53:25,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:53:25,939 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:53:25,939 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:53:25,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:53:25,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:53:25,940 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:53:25,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:53:25,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:53:25,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:53:25,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:53:25,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:53:25,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:53:25,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:53:25,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:53:25,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:53:25,943 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:53:25,943 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:53:25,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:53:25,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:53:25,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:53:25,944 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-10-25 21:53:26,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:53:26,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:53:26,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:53:26,456 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:53:26,457 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:53:26,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-10-25 21:53:26,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4ca90db5/11b23c1f0499470099eff24720a38441/FLAGdb5e50b34 [2020-10-25 21:53:27,161 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:53:27,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-10-25 21:53:27,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4ca90db5/11b23c1f0499470099eff24720a38441/FLAGdb5e50b34 [2020-10-25 21:53:27,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4ca90db5/11b23c1f0499470099eff24720a38441 [2020-10-25 21:53:27,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:53:27,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:53:27,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:27,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:53:27,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:53:27,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:27" (1/1) ... [2020-10-25 21:53:27,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483b8096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:27, skipping insertion in model container [2020-10-25 21:53:27,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:27" (1/1) ... [2020-10-25 21:53:27,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:53:27,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:53:27,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:27,903 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:53:27,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:28,010 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:53:28,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:28 WrapperNode [2020-10-25 21:53:28,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:28,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:28,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:53:28,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:53:28,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:28" (1/1) ... [2020-10-25 21:53:28,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:28" (1/1) ... [2020-10-25 21:53:28,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:28,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:53:28,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:53:28,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:53:28,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:28" (1/1) ... [2020-10-25 21:53:28,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:28" (1/1) ... [2020-10-25 21:53:28,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:28" (1/1) ... [2020-10-25 21:53:28,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:28" (1/1) ... [2020-10-25 21:53:28,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:28" (1/1) ... [2020-10-25 21:53:28,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:28" (1/1) ... [2020-10-25 21:53:28,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:28" (1/1) ... [2020-10-25 21:53:28,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:53:28,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:53:28,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:53:28,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:53:28,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:28" (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 [2020-10-25 21:53:28,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-25 21:53:28,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-25 21:53:28,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:53:28,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:53:28,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-25 21:53:28,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:53:28,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:53:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-25 21:53:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:53:28,968 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:53:28,969 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-25 21:53:28,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:28 BoogieIcfgContainer [2020-10-25 21:53:28,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:53:28,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:53:28,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:53:28,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:53:28,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:53:27" (1/3) ... [2020-10-25 21:53:28,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa3feeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:28, skipping insertion in model container [2020-10-25 21:53:28,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:28" (2/3) ... [2020-10-25 21:53:28,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa3feeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:28, skipping insertion in model container [2020-10-25 21:53:28,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:28" (3/3) ... [2020-10-25 21:53:28,994 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-10-25 21:53:29,020 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:53:29,033 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:53:29,047 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:53:29,074 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:53:29,074 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:53:29,075 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:53:29,075 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:53:29,075 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:53:29,075 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:53:29,075 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:53:29,075 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:53:29,090 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-25 21:53:29,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 21:53:29,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:29,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:29,097 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:29,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:29,103 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-10-25 21:53:29,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:29,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447157023] [2020-10-25 21:53:29,116 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 [2020-10-25 21:53:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:29,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 21:53:29,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:53:29,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:29,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:53:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:29,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447157023] [2020-10-25 21:53:29,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:29,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 21:53:29,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601181036] [2020-10-25 21:53:29,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:53:29,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:53:29,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:53:29,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:53:29,365 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-10-25 21:53:29,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:29,398 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-10-25 21:53:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:53:29,399 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-25 21:53:29,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:29,410 INFO L225 Difference]: With dead ends: 53 [2020-10-25 21:53:29,410 INFO L226 Difference]: Without dead ends: 24 [2020-10-25 21:53:29,413 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 [2020-10-25 21:53:29,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-25 21:53:29,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-25 21:53:29,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-25 21:53:29,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-25 21:53:29,450 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-10-25 21:53:29,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:29,450 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-25 21:53:29,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:53:29,450 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-25 21:53:29,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 21:53:29,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:29,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:29,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:53:29,670 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:29,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:29,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-10-25 21:53:29,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:29,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551028740] [2020-10-25 21:53:29,675 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 [2020-10-25 21:53:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:30,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:30,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:30,256 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 21:53:30,256 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:53:30,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 21:53:30,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:53:30 BoogieIcfgContainer [2020-10-25 21:53:30,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:53:30,506 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:53:30,506 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:53:30,506 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:53:30,507 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:28" (3/4) ... [2020-10-25 21:53:30,509 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 21:53:30,573 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:53:30,573 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:53:30,577 INFO L168 Benchmark]: Toolchain (without parser) took 3094.35 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 24.9 MB in the beginning and 37.4 MB in the end (delta: -12.5 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:30,578 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 30.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:30,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.23 ms. Allocated memory is still 48.2 MB. Free memory was 24.2 MB in the beginning and 23.7 MB in the end (delta: 459.7 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:30,580 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.51 ms. Allocated memory is still 48.2 MB. Free memory was 23.7 MB in the beginning and 21.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:30,581 INFO L168 Benchmark]: Boogie Preprocessor took 87.10 ms. Allocated memory is still 48.2 MB. Free memory was 21.7 MB in the beginning and 20.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:30,582 INFO L168 Benchmark]: RCFGBuilder took 774.62 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 19.9 MB in the beginning and 42.5 MB in the end (delta: -22.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:30,583 INFO L168 Benchmark]: TraceAbstraction took 1532.69 ms. Allocated memory is still 60.8 MB. Free memory was 42.2 MB in the beginning and 39.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:30,584 INFO L168 Benchmark]: Witness Printer took 67.36 ms. Allocated memory is still 60.8 MB. Free memory was 39.8 MB in the beginning and 37.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:30,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 30.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 520.23 ms. Allocated memory is still 48.2 MB. Free memory was 24.2 MB in the beginning and 23.7 MB in the end (delta: 459.7 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.51 ms. Allocated memory is still 48.2 MB. Free memory was 23.7 MB in the beginning and 21.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.10 ms. Allocated memory is still 48.2 MB. Free memory was 21.7 MB in the beginning and 20.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 774.62 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 19.9 MB in the beginning and 42.5 MB in the end (delta: -22.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1532.69 ms. Allocated memory is still 60.8 MB. Free memory was 42.2 MB in the beginning and 39.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * Witness Printer took 67.36 ms. Allocated memory is still 60.8 MB. Free memory was 39.8 MB in the beginning and 37.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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_1072d.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, 0.3s 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...