./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1032d.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_1032d.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 875e041813cc52e2b4711be1a316a97bbafa7756 ...................................................................................................................................................................................................................................................................................................... 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_1032d.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 875e041813cc52e2b4711be1a316a97bbafa7756 .............................................................................................................................................................................................................................................................................................................................................................. 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 21:53:00,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:53:00,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:53:00,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:53:00,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:53:00,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:53:00,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:53:00,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:53:00,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:53:00,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:53:00,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:53:00,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:53:00,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:53:00,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:53:00,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:53:00,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:53:00,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:53:00,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:53:00,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:53:00,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:53:00,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:53:00,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:53:00,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:53:00,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:53:00,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:53:00,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:53:00,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:53:00,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:53:00,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:53:00,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:53:00,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:53:00,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:53:00,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:53:00,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:53:00,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:53:00,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:53:00,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:53:00,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:53:00,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:53:00,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:53:00,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:53:00,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:53:01,031 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:53:01,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:53:01,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:53:01,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:53:01,035 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:53:01,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:53:01,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:53:01,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:53:01,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:53:01,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:53:01,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:53:01,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:53:01,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:53:01,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:53:01,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:53:01,040 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:53:01,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:53:01,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:53:01,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:53:01,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:53:01,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:53:01,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:53:01,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:53:01,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:53:01,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:53:01,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:53:01,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:53:01,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:53:01,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:53:01,045 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 875e041813cc52e2b4711be1a316a97bbafa7756 [2020-10-25 21:53:01,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:53:01,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:53:01,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:53:01,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:53:01,562 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:53:01,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-10-25 21:53:01,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61f853991/993213801f3749e99bbffd64e0cc1454/FLAGdf62bc139 [2020-10-25 21:53:02,336 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:53:02,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-10-25 21:53:02,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61f853991/993213801f3749e99bbffd64e0cc1454/FLAGdf62bc139 [2020-10-25 21:53:02,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61f853991/993213801f3749e99bbffd64e0cc1454 [2020-10-25 21:53:02,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:53:02,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:53:02,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:02,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:53:02,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:53:02,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:02" (1/1) ... [2020-10-25 21:53:02,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40525ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:02, skipping insertion in model container [2020-10-25 21:53:02,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:02" (1/1) ... [2020-10-25 21:53:02,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:53:02,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:53:02,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:02,989 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:53:03,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:03,048 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:53:03,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:03 WrapperNode [2020-10-25 21:53:03,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:03,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:03,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:53:03,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:53:03,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:03" (1/1) ... [2020-10-25 21:53:03,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:03" (1/1) ... [2020-10-25 21:53:03,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:03,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:53:03,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:53:03,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:53:03,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:03" (1/1) ... [2020-10-25 21:53:03,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:03" (1/1) ... [2020-10-25 21:53:03,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:03" (1/1) ... [2020-10-25 21:53:03,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:03" (1/1) ... [2020-10-25 21:53:03,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:03" (1/1) ... [2020-10-25 21:53:03,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:03" (1/1) ... [2020-10-25 21:53:03,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:03" (1/1) ... [2020-10-25 21:53:03,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:53:03,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:53:03,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:53:03,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:53:03,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:03" (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 21:53:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:53:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:53:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-25 21:53:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 21:53:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-25 21:53:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:53:03,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:53:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 21:53:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:53:03,744 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:53:03,744 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-25 21:53:03,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:03 BoogieIcfgContainer [2020-10-25 21:53:03,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:53:03,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:53:03,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:53:03,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:53:03,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:53:02" (1/3) ... [2020-10-25 21:53:03,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3e0f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:03, skipping insertion in model container [2020-10-25 21:53:03,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:03" (2/3) ... [2020-10-25 21:53:03,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3e0f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:03, skipping insertion in model container [2020-10-25 21:53:03,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:03" (3/3) ... [2020-10-25 21:53:03,757 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2020-10-25 21:53:03,770 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:53:03,775 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:53:03,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:53:03,820 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:53:03,821 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:53:03,821 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:53:03,821 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:53:03,821 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:53:03,821 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:53:03,821 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:53:03,822 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:53:03,838 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-25 21:53:03,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 21:53:03,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:03,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:03,846 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:03,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:03,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-10-25 21:53:03,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:03,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982650788] [2020-10-25 21:53:03,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:04,015 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 21:53:04,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982650788] [2020-10-25 21:53:04,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:04,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:53:04,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820268719] [2020-10-25 21:53:04,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:53:04,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:53:04,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:53:04,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:53:04,043 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-10-25 21:53:04,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:04,065 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-10-25 21:53:04,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:53:04,067 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-25 21:53:04,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:04,078 INFO L225 Difference]: With dead ends: 57 [2020-10-25 21:53:04,079 INFO L226 Difference]: Without dead ends: 26 [2020-10-25 21:53:04,082 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 21:53:04,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-25 21:53:04,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-25 21:53:04,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-25 21:53:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-10-25 21:53:04,122 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-10-25 21:53:04,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:04,123 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-10-25 21:53:04,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:53:04,123 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-10-25 21:53:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 21:53:04,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:04,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:04,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:53:04,125 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:04,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:04,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-10-25 21:53:04,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:04,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079944577] [2020-10-25 21:53:04,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:04,291 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:04,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:04,399 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:53:04,399 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:53:04,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:53:04,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:53:04 BoogieIcfgContainer [2020-10-25 21:53:04,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:53:04,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:53:04,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:53:04,436 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:53:04,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:03" (3/4) ... [2020-10-25 21:53:04,441 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:53:04,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:53:04,444 INFO L168 Benchmark]: Toolchain (without parser) took 1773.73 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 29.1 MB in the beginning and 35.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:04,445 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 52.4 MB. Free memory was 34.1 MB in the beginning and 34.0 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:04,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.87 ms. Allocated memory is still 52.4 MB. Free memory was 28.4 MB in the beginning and 31.1 MB in the end (delta: -2.7 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:04,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.67 ms. Allocated memory is still 52.4 MB. Free memory was 31.1 MB in the beginning and 29.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:04,455 INFO L168 Benchmark]: Boogie Preprocessor took 36.43 ms. Allocated memory is still 52.4 MB. Free memory was 29.2 MB in the beginning and 27.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:04,456 INFO L168 Benchmark]: RCFGBuilder took 607.69 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 27.5 MB in the beginning and 43.3 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:04,457 INFO L168 Benchmark]: TraceAbstraction took 686.81 ms. Allocated memory is still 75.5 MB. Free memory was 42.7 MB in the beginning and 35.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:04,458 INFO L168 Benchmark]: Witness Printer took 5.34 ms. Allocated memory is still 75.5 MB. Free memory was 35.8 MB in the beginning and 35.5 MB in the end (delta: 284.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:04,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 52.4 MB. Free memory was 34.1 MB in the beginning and 34.0 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.87 ms. Allocated memory is still 52.4 MB. Free memory was 28.4 MB in the beginning and 31.1 MB in the end (delta: -2.7 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.67 ms. Allocated memory is still 52.4 MB. Free memory was 31.1 MB in the beginning and 29.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.43 ms. Allocated memory is still 52.4 MB. Free memory was 29.2 MB in the beginning and 27.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 607.69 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 27.5 MB in the beginning and 43.3 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 686.81 ms. Allocated memory is still 75.5 MB. Free memory was 42.7 MB in the beginning and 35.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.34 ms. Allocated memory is still 75.5 MB. Free memory was 35.8 MB in the beginning and 35.5 MB in the end (delta: 284.3 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 shiftRight at line 33, overapproximation of bitwiseOr at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 74. Possible FailurePath: [L88] double x = -1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND TRUE exponent_less_1023 < 20 [L27] COND FALSE !(exponent_less_1023 < 0) [L33] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L34] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L35] return x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1032d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 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: 36 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=30occurred 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 21:53:07,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:53:07,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:53:07,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:53:07,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:53:07,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:53:07,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:53:07,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:53:07,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:53:07,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:53:07,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:53:07,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:53:07,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:53:07,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:53:07,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:53:07,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:53:07,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:53:07,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:53:07,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:53:07,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:53:07,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:53:07,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:53:07,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:53:07,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:53:07,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:53:07,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:53:07,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:53:07,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:53:07,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:53:07,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:53:07,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:53:07,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:53:07,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:53:07,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:53:07,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:53:07,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:53:07,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:53:07,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:53:07,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:53:07,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:53:07,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:53:07,443 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:53:07,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:53:07,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:53:07,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:53:07,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:53:07,474 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:53:07,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:53:07,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:53:07,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:53:07,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:53:07,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:53:07,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:53:07,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:53:07,476 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:53:07,476 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:53:07,476 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:53:07,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:53:07,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:53:07,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:53:07,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:53:07,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:53:07,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:53:07,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:53:07,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:53:07,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:53:07,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:53:07,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:53:07,478 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:53:07,479 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:53:07,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:53:07,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:53:07,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:53:07,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 875e041813cc52e2b4711be1a316a97bbafa7756 [2020-10-25 21:53:07,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:53:07,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:53:07,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:53:07,949 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:53:07,953 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:53:07,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-10-25 21:53:08,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bebd77bcd/97a1f2ec776745d6b5459baa8ebb061f/FLAG2299bb7e4 [2020-10-25 21:53:08,766 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:53:08,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-10-25 21:53:08,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bebd77bcd/97a1f2ec776745d6b5459baa8ebb061f/FLAG2299bb7e4 [2020-10-25 21:53:09,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bebd77bcd/97a1f2ec776745d6b5459baa8ebb061f [2020-10-25 21:53:09,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:53:09,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:53:09,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:09,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:53:09,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:53:09,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:09" (1/1) ... [2020-10-25 21:53:09,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7256eb50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:09, skipping insertion in model container [2020-10-25 21:53:09,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:09" (1/1) ... [2020-10-25 21:53:09,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:53:09,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:53:09,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:09,469 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:53:09,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:09,567 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:53:09,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:09 WrapperNode [2020-10-25 21:53:09,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:09,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:09,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:53:09,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:53:09,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:09" (1/1) ... [2020-10-25 21:53:09,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:09" (1/1) ... [2020-10-25 21:53:09,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:09,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:53:09,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:53:09,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:53:09,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:09" (1/1) ... [2020-10-25 21:53:09,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:09" (1/1) ... [2020-10-25 21:53:09,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:09" (1/1) ... [2020-10-25 21:53:09,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:09" (1/1) ... [2020-10-25 21:53:09,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:09" (1/1) ... [2020-10-25 21:53:09,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:09" (1/1) ... [2020-10-25 21:53:09,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:09" (1/1) ... [2020-10-25 21:53:09,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:53:09,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:53:09,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:53:09,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:53:09,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:53:09,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-25 21:53:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-25 21:53:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:53:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:53:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-25 21:53:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:53:09,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:53:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-25 21:53:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:53:10,436 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:53:10,437 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-25 21:53:10,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:10 BoogieIcfgContainer [2020-10-25 21:53:10,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:53:10,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:53:10,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:53:10,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:53:10,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:53:09" (1/3) ... [2020-10-25 21:53:10,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65299401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:10, skipping insertion in model container [2020-10-25 21:53:10,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:09" (2/3) ... [2020-10-25 21:53:10,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65299401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:10, skipping insertion in model container [2020-10-25 21:53:10,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:10" (3/3) ... [2020-10-25 21:53:10,450 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2020-10-25 21:53:10,464 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:53:10,470 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:53:10,486 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:53:10,519 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:53:10,519 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:53:10,520 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:53:10,520 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:53:10,520 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:53:10,520 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:53:10,520 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:53:10,520 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:53:10,537 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-25 21:53:10,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 21:53:10,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:10,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:10,545 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:10,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-10-25 21:53:10,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:10,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425989403] [2020-10-25 21:53:10,569 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 21:53:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:10,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 21:53:10,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:53:10,723 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 21:53:10,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:53:10,729 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 21:53:10,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425989403] [2020-10-25 21:53:10,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:10,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 21:53:10,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639407164] [2020-10-25 21:53:10,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:53:10,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:53:10,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:53:10,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:53:10,756 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-10-25 21:53:10,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:10,779 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-10-25 21:53:10,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:53:10,781 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-25 21:53:10,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:10,792 INFO L225 Difference]: With dead ends: 57 [2020-10-25 21:53:10,792 INFO L226 Difference]: Without dead ends: 26 [2020-10-25 21:53:10,796 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 21:53:10,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-25 21:53:10,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-25 21:53:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-25 21:53:10,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-10-25 21:53:10,843 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-10-25 21:53:10,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:10,843 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-10-25 21:53:10,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:53:10,844 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-10-25 21:53:10,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 21:53:10,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:10,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:11,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:53:11,059 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:11,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:11,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-10-25 21:53:11,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:11,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533504896] [2020-10-25 21:53:11,062 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 21:53:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:11,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 21:53:11,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:53:11,423 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 21:53:11,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:53:11,609 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 21:53:11,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533504896] [2020-10-25 21:53:11,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:11,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-25 21:53:11,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270776229] [2020-10-25 21:53:11,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 21:53:11,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:53:11,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 21:53:11,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-25 21:53:11,613 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 8 states. [2020-10-25 21:53:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:11,985 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-10-25 21:53:11,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 21:53:11,986 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-25 21:53:11,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:11,987 INFO L225 Difference]: With dead ends: 34 [2020-10-25 21:53:11,987 INFO L226 Difference]: Without dead ends: 16 [2020-10-25 21:53:11,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-25 21:53:11,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-25 21:53:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-25 21:53:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-25 21:53:11,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-10-25 21:53:11,994 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2020-10-25 21:53:11,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:11,995 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-10-25 21:53:11,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 21:53:11,995 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-10-25 21:53:11,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 21:53:11,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:11,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:12,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 21:53:12,212 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:12,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:12,214 INFO L82 PathProgramCache]: Analyzing trace with hash 709099857, now seen corresponding path program 1 times [2020-10-25 21:53:12,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:12,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370218098] [2020-10-25 21:53:12,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-25 21:53:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:12,490 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:12,687 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:12,747 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 21:53:12,748 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:53:12,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-25 21:53:12,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:53:12 BoogieIcfgContainer [2020-10-25 21:53:12,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:53:12,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:53:12,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:53:12,992 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:53:12,993 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:10" (3/4) ... [2020-10-25 21:53:12,997 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 21:53:13,065 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:53:13,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:53:13,068 INFO L168 Benchmark]: Toolchain (without parser) took 3942.21 ms. Allocated memory was 37.7 MB in the beginning and 58.7 MB in the end (delta: 21.0 MB). Free memory was 15.3 MB in the beginning and 40.7 MB in the end (delta: -25.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:13,069 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 37.7 MB. Free memory was 24.8 MB in the beginning and 24.8 MB in the end (delta: 31.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:13,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.79 ms. Allocated memory was 37.7 MB in the beginning and 48.2 MB in the end (delta: 10.5 MB). Free memory was 23.8 MB in the beginning and 30.7 MB in the end (delta: -6.8 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:13,071 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.05 ms. Allocated memory is still 48.2 MB. Free memory was 30.7 MB in the beginning and 28.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:13,072 INFO L168 Benchmark]: Boogie Preprocessor took 47.30 ms. Allocated memory is still 48.2 MB. Free memory was 28.9 MB in the beginning and 27.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:13,072 INFO L168 Benchmark]: RCFGBuilder took 768.64 ms. Allocated memory is still 48.2 MB. Free memory was 27.1 MB in the beginning and 28.0 MB in the end (delta: -912.1 kB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:13,073 INFO L168 Benchmark]: TraceAbstraction took 2547.13 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 27.7 MB in the beginning and 23.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:13,074 INFO L168 Benchmark]: Witness Printer took 76.29 ms. Allocated memory is still 58.7 MB. Free memory was 23.7 MB in the beginning and 40.7 MB in the end (delta: -17.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:13,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 37.7 MB. Free memory was 24.8 MB in the beginning and 24.8 MB in the end (delta: 31.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 426.79 ms. Allocated memory was 37.7 MB in the beginning and 48.2 MB in the end (delta: 10.5 MB). Free memory was 23.8 MB in the beginning and 30.7 MB in the end (delta: -6.8 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.05 ms. Allocated memory is still 48.2 MB. Free memory was 30.7 MB in the beginning and 28.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.30 ms. Allocated memory is still 48.2 MB. Free memory was 28.9 MB in the beginning and 27.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 768.64 ms. Allocated memory is still 48.2 MB. Free memory was 27.1 MB in the beginning and 28.0 MB in the end (delta: -912.1 kB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2547.13 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 27.7 MB in the beginning and 23.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Witness Printer took 76.29 ms. Allocated memory is still 58.7 MB. Free memory was 23.7 MB in the beginning and 40.7 MB in the end (delta: -17.0 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: [L88] double x = -1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND FALSE !(exponent_less_1023 < 20) [L40] COND TRUE exponent_less_1023 > 51 [L41] COND TRUE exponent_less_1023 == 1024 [L42] return x + x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1032d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 44 SDslu, 6 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 5 QuantifiedInterpolants, 2332 SizeOfPredicates, 8 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...